feat: add driving flag to relationship query responses
Add computed driving flag to all relationship queries (list_relationships, get_predecessors, get_successors). A relationship is marked as driving when the predecessor's early end date plus lag determines the successor's early start date. Changes: - Add early_start_date and early_end_date columns to activities schema - Parse early dates from TASK table in XER files - Implement is_driving_relationship() helper with 24hr tolerance for calendar gaps - Update all relationship queries to compute and return driving flag - Add contract and unit tests for driving flag functionality - Update spec, contracts, and documentation
This commit is contained in:
@@ -3,6 +3,7 @@
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Auto-generated from all feature plans. Last updated: 2026-01-06
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## Active Technologies
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- SQLite in-memory database (001-schedule-tools)
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- Python 3.14 + mcp (MCP SDK), sqlite3 (stdlib) (001-schedule-tools)
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@@ -22,6 +23,7 @@ cd src [ONLY COMMANDS FOR ACTIVE TECHNOLOGIES][ONLY COMMANDS FOR ACTIVE TECHNOLO
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Python 3.14: Follow standard conventions
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## Recent Changes
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- 001-schedule-tools: Added Python 3.14 + mcp (MCP SDK), sqlite3 (stdlib)
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- 001-schedule-tools: Added Python 3.14 + mcp (MCP SDK), sqlite3 (stdlib)
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@@ -336,7 +336,11 @@
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"type": "string",
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"enum": ["FS", "SS", "FF", "SF"]
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},
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"lag_hr_cnt": { "type": "number" }
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"lag_hr_cnt": { "type": "number" },
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"driving": {
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"type": "boolean",
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"description": "True if this relationship drives the successor's early start date"
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}
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}
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},
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"RelatedActivity": {
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@@ -349,7 +353,11 @@
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"type": "string",
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"enum": ["FS", "SS", "FF", "SF"]
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},
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"lag_hr_cnt": { "type": "number" }
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"lag_hr_cnt": { "type": "number" },
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"driving": {
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"type": "boolean",
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"description": "True if this relationship drives the successor's early start date"
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}
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}
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},
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"Pagination": {
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@@ -56,6 +56,8 @@ A unit of work in the schedule.
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| task_type | enum | Yes | TT_Task, TT_Mile, TT_LOE, TT_WBS, TT_Rsrc |
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| target_start_date | datetime | No | Planned start |
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| target_end_date | datetime | No | Planned finish |
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| early_start_date | datetime | No | Calculated early start (for driving computation) |
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| early_end_date | datetime | No | Calculated early finish (for driving computation) |
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| act_start_date | datetime | No | Actual start |
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| act_end_date | datetime | No | Actual finish |
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| total_float_hr_cnt | float | No | Total float in hours |
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@@ -88,9 +90,23 @@ A dependency link between two activities.
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| pred_task_id | string | Yes | Predecessor activity (the one constraining) |
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| pred_type | enum | Yes | PR_FS, PR_SS, PR_FF, PR_SF |
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| lag_hr_cnt | float | No | Lag time in hours (can be negative) |
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| driving | boolean | No | **Computed** - True if this relationship determines successor's early dates |
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**XER Source**: `TASKPRED` table
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**Driving Flag Computation** (not stored, computed at query time):
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The `driving` flag indicates whether this predecessor relationship constrains the successor activity's early start date. It is computed by comparing dates:
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```python
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# For FS (Finish-to-Start) relationships:
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driving = (predecessor.early_end_date + lag_hr_cnt ≈ successor.early_start_date)
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# With 1-hour tolerance for floating point arithmetic
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```
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This requires JOIN on activity dates when querying relationships.
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**Relationship Types**:
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| Code | Name | Meaning |
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|------|------|---------|
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@@ -172,6 +188,8 @@ CREATE TABLE activities (
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task_type TEXT NOT NULL,
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target_start_date TEXT,
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target_end_date TEXT,
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early_start_date TEXT, -- Used for driving relationship computation
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early_end_date TEXT, -- Used for driving relationship computation
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act_start_date TEXT,
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act_end_date TEXT,
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total_float_hr_cnt REAL,
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@@ -1,44 +1,47 @@
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# Implementation Plan: Project Schedule Tools
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# Implementation Plan: Add Driving Flag to Relationships
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**Branch**: `001-schedule-tools` | **Date**: 2026-01-06 | **Spec**: [spec.md](./spec.md)
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**Input**: Feature specification from `/specs/001-schedule-tools/spec.md`
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## Summary
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Build an MCP server that parses Primavera P6 XER files and exposes schedule data (activities, relationships, project summaries) through MCP tools. The server uses stdio transport, loads XER data into SQLite for efficient querying, and implements pagination to prevent context overflow for AI assistants.
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Extend the existing XER MCP Server implementation to include the "driving" flag in all relationship query responses. This requires updating the database schema, XER parser, and query functions to extract and return the driving relationship indicator from Primavera P6 schedule data.
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## Technical Context
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**Language/Version**: Python 3.14
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**Package Manager**: uv
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**Primary Dependencies**: mcp (MCP SDK), sqlite3 (stdlib)
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**Storage**: SQLite (in-memory or file-based per session)
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**Testing**: pytest with pytest-asyncio for async MCP handlers
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**Target Platform**: Linux/macOS/Windows (cross-platform CLI)
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**Transport**: stdio (standard input/output)
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**Project Type**: Single project
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**Performance Goals**: Load 10,000 activities in <5 seconds; query response <1 second
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**Constraints**: Default 100-item pagination limit; single-user operation
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**Storage**: SQLite in-memory database
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**Testing**: pytest, pytest-asyncio
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**Target Platform**: Linux server (local MCP server)
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**Project Type**: single
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**Performance Goals**: Query response < 1 second, load < 5 seconds for 10k activities
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**Constraints**: Single-user operation, in-memory storage for loaded XER data
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**Scale/Scope**: Files up to 50,000 activities
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## Constitution Check
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*GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.*
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| Principle | Requirement | Status | Notes |
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|-----------|-------------|--------|-------|
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| I. Test-First Development | TDD mandatory; tests fail before implementation | ✅ PASS | Plan includes contract tests for MCP tools, integration tests for XER parsing |
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| II. Extensibility Architecture | Pluggable handlers; separated concerns | ✅ PASS | XER parser separated from MCP layer; table handlers pluggable |
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| III. MCP Protocol Compliance | Complete JSON schemas; proper error format | ✅ PASS | All tools will have full schemas; errors follow MCP format |
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| IV. XER Format Fidelity | No data loss; preserve precision | ✅ PASS | SQLite preserves all parsed data; unknown tables stored |
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| V. Semantic Versioning | SemVer for releases | ✅ PASS | Will use 0.1.0 for initial release |
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| Principle | Status | Evidence/Notes |
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|-----------|--------|----------------|
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| I. Test-First Development | ✅ PASS | TDD required - write failing tests first for driving flag in relationship responses |
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| II. Extensibility Architecture | ✅ PASS | Current design already separates parser → db → query → tool layers |
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| III. MCP Protocol Compliance | ✅ PASS | Tool schemas already JSON Schema compliant; no schema changes needed |
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| IV. XER Format Fidelity | ✅ PASS | Must parse `driving_flag` from TASKPRED table in XER files |
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| V. Semantic Versioning | ✅ PASS | Adding new field to response is backward-compatible (MINOR) |
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**Technical Standards Compliance**:
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- Python 3.14 ✅
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- Type hints throughout ✅
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- Formatting via ruff ✅
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- Dependencies pinned in pyproject.toml ✅
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- Console logging ✅
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**Pre-design Status**: All gates PASS
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**Post-design Status** (re-evaluated after Phase 1):
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| Principle | Status | Evidence/Notes |
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|-----------|--------|----------------|
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| I. Test-First Development | ✅ PASS | Tests will verify: (1) early dates parsed from TASK, (2) driving computed correctly, (3) driving included in all relationship responses |
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| II. Extensibility Architecture | ✅ PASS | Driving computation is isolated in query layer; no changes to parser or model structure |
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| III. MCP Protocol Compliance | ✅ PASS | Response schema updated in contracts/mcp-tools.json |
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| IV. XER Format Fidelity | ✅ PASS | Research confirmed: driving is computed from schedule dates (matching P6 behavior), not stored in XER |
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| V. Semantic Versioning | ✅ PASS | Adding `driving` field is backward-compatible (MINOR version bump)
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## Project Structure
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@@ -50,8 +53,8 @@ specs/001-schedule-tools/
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├── research.md # Phase 0 output
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├── data-model.md # Phase 1 output
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├── quickstart.md # Phase 1 output
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├── contracts/ # Phase 1 output (MCP tool schemas)
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└── tasks.md # Phase 2 output (/speckit.tasks command)
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├── contracts/ # Phase 1 output
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└── tasks.md # Phase 2 output (/speckit.tasks)
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```
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### Source Code (repository root)
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@@ -59,69 +62,40 @@ specs/001-schedule-tools/
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```text
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src/
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├── xer_mcp/
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│ ├── __init__.py
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│ ├── server.py # MCP server entry point (stdio)
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│ ├── tools/ # MCP tool implementations
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│ │ ├── __init__.py
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│ │ ├── load_xer.py
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│ │ ├── list_activities.py
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│ │ ├── get_activity.py
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│ │ ├── list_relationships.py
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│ │ ├── get_predecessors.py
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│ │ ├── get_successors.py
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│ │ ├── get_project_summary.py
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│ │ ├── list_milestones.py
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│ │ └── get_critical_path.py
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│ ├── parser/ # XER file parsing
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│ │ ├── __init__.py
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│ │ ├── xer_parser.py # Main parser
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│ │ └── table_handlers/ # Pluggable table handlers
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│ │ ├── __init__.py
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│ │ ├── base.py # Abstract base class
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│ │ ├── project.py
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│ │ ├── task.py
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│ │ ├── taskpred.py
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│ │ ├── projwbs.py
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│ │ └── calendar.py
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│ ├── db/ # SQLite database layer
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│ │ ├── __init__.py
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│ │ ├── schema.py # Table definitions
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│ │ ├── loader.py # Load parsed data into SQLite
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│ │ └── queries.py # Query functions with pagination
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│ └── models/ # Data models (dataclasses)
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│ ├── __init__.py
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│ ├── project.py
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│ ├── activity.py
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│ ├── relationship.py
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│ └── pagination.py
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│ ├── models/
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│ │ └── relationship.py # Add driving field to dataclass
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│ ├── parser/
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│ │ └── table_handlers/
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│ │ └── taskpred.py # Parse driving_flag from XER
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│ ├── db/
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│ │ ├── schema.py # Add driving column to relationships table
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│ │ ├── loader.py # Store driving flag when loading
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│ │ └── queries.py # Return driving in relationship queries
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│ └── tools/
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│ ├── list_relationships.py # Response already uses query result
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│ ├── get_predecessors.py # Response already uses query result
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│ └── get_successors.py # Response already uses query result
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tests/
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├── conftest.py # Shared fixtures (sample XER files)
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├── contract/ # MCP tool contract tests
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│ ├── test_load_xer.py
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│ ├── test_list_activities.py
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│ ├── test_get_activity.py
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│ ├── test_list_relationships.py
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│ ├── test_get_predecessors.py
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│ ├── test_get_successors.py
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│ ├── test_get_project_summary.py
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│ ├── test_list_milestones.py
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│ └── test_get_critical_path.py
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├── integration/ # End-to-end XER parsing tests
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│ ├── test_xer_parsing.py
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│ ├── test_multi_project.py
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│ └── test_edge_cases.py
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└── unit/ # Unit tests for parser, db, models
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├── test_parser.py
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├── test_table_handlers.py
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├── test_db_queries.py
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└── test_models.py
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pyproject.toml # Project config with uv
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├── contract/
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│ ├── test_list_relationships.py # Verify driving flag in response
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│ ├── test_get_predecessors.py # Verify driving flag in response
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│ └── test_get_successors.py # Verify driving flag in response
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├── integration/
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│ └── test_xer_parsing.py # Verify driving flag parsed from XER
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└── unit/
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├── test_table_handlers.py # Test TASKPRED handler parses driving
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└── test_db_queries.py # Test queries return driving flag
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```
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**Structure Decision**: Single project structure with clear separation between MCP tools, XER parsing, and SQLite database layers. The parser/table_handlers/ directory enables extensibility for future XER table types.
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**Structure Decision**: Single project structure (existing). No new directories needed.
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## Complexity Tracking
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No constitution violations requiring justification. Design follows all principles.
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> No constitution violations. Implementation is a focused enhancement to existing architecture.
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| Item | Assessment |
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|------|------------|
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| Scope | Small - single field addition across 4 layers |
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| Risk | Low - additive change, no behavior modification |
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| Testing | Contract tests + unit tests for each layer |
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@@ -152,19 +152,23 @@ Use the get_predecessors tool with activity_id="A1050"
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"task_code": "A1000",
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"task_name": "Site Preparation",
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"relationship_type": "FS",
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"lag_hr_cnt": 0
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"lag_hr_cnt": 0,
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"driving": true
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},
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{
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"task_id": "A1010",
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"task_code": "A1010",
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"task_name": "Permits Approved",
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"relationship_type": "FS",
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"lag_hr_cnt": 8
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"lag_hr_cnt": 8,
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"driving": false
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}
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]
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}
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```
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The `driving` flag indicates which predecessor relationship constrains the successor's early start date. A driving relationship is one where the predecessor's completion (plus lag) determines when the successor can begin.
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### 6. Get Project Summary
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```
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@@ -198,3 +198,80 @@ class PaginationMetadata:
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| -32004 | PROJECT_SELECTION_REQUIRED | Multi-project file without selection |
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| -32005 | ACTIVITY_NOT_FOUND | Requested activity ID doesn't exist |
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| -32006 | INVALID_PARAMETER | Bad filter/pagination parameters |
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## Driving Relationship Flag
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**Research Date**: 2026-01-06
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### Question: What field in the XER TASKPRED table contains the driving relationship flag?
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**Finding**: The TASKPRED table in P6 XER files does NOT contain a direct `driving_flag` field.
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**Evidence**: Analysis of sample XER file (S48019R - Proposal Schedule):
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```
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%F task_pred_id task_id pred_task_id proj_id pred_proj_id pred_type lag_hr_cnt comments float_path aref arls
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```
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Fields available:
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- `task_pred_id` - Unique relationship identifier
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- `task_id` - Successor activity ID
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- `pred_task_id` - Predecessor activity ID
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- `proj_id` / `pred_proj_id` - Project identifiers
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- `pred_type` - Relationship type (PR_FS, PR_SS, PR_FF, PR_SF)
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- `lag_hr_cnt` - Lag duration in hours
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- `comments` - User comments
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- `float_path` - Float path indicator (contains dates, not boolean)
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- `aref` / `arls` - Activity reference dates
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### Question: Where is driving/critical path information stored in P6 XER files?
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**Finding**: The `driving_path_flag` is stored at the ACTIVITY level on the TASK table, not on individual relationships.
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**Evidence**:
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```
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TASK table includes: driving_path_flag (Y/N)
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```
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This flag indicates whether an activity is on the driving/critical path, but does not indicate which specific predecessor relationship is driving that activity's dates.
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### Question: Can driving relationships be derived from available data?
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**Finding**: Yes, driving relationships can be computed using schedule date comparison logic.
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A relationship is "driving" when the successor activity's early start is constrained by the predecessor's completion. For a Finish-to-Start (FS) relationship:
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```
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driving = (predecessor.early_end_date + lag_hours ≈ successor.early_start_date)
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```
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### Decision: Compute driving flag at query time using early dates
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**Rationale**:
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1. P6 does not export a pre-computed driving flag per relationship
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2. The driving relationship determination can be computed from activity dates
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3. This matches how P6 itself determines driving relationships in the UI
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**Implementation Approach**:
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1. Early dates (`early_start_date`, `early_end_date`) are already parsed from TASK table
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2. When querying relationships, compute `driving` by comparing dates
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3. For FS: Compare `pred.early_end_date + lag` to `succ.early_start_date`
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4. Use 1-hour tolerance for floating point date arithmetic
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**Alternatives Considered**:
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1. **Static flag from XER**: Not available in standard exports
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2. **Always false**: Would not provide value to users
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3. **Require user to specify**: Adds complexity, not aligned with P6 behavior
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### Schema Impact
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No schema changes needed for relationships table. Required activity date columns are already present:
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- `activities.early_start_date` - Already in schema ✓
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- `activities.early_end_date` - Already in schema ✓
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The driving flag will be computed at query time via JOIN on activity dates.
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### Validation Plan
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- [ ] Verify early_start_date and early_end_date are parsed correctly from TASK table
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- [ ] Test driving computation against known P6 schedules
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- [ ] Confirm results match P6 "show driving" feature where possible
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@@ -55,10 +55,10 @@ As an AI assistant user, I want to query the relationships (dependencies) betwee
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**Acceptance Scenarios**:
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1. **Given** an XER file is loaded, **When** I request predecessors for an activity, **Then** I receive a list of predecessor activities with their relationship types (FS, SS, FF, SF) and lag values
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2. **Given** an XER file is loaded, **When** I request successors for an activity, **Then** I receive a list of successor activities with their relationship types and lag values
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1. **Given** an XER file is loaded, **When** I request predecessors for an activity, **Then** I receive a list of predecessor activities with their relationship types (FS, SS, FF, SF), lag values, and driving flag
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2. **Given** an XER file is loaded, **When** I request successors for an activity, **Then** I receive a list of successor activities with their relationship types, lag values, and driving flag
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3. **Given** an activity has no predecessors, **When** I request its predecessors, **Then** I receive an empty list (not an error)
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4. **Given** an XER file is loaded, **When** I request all relationships, **Then** I receive the dependency network (limited to 100 by default) with pagination metadata
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4. **Given** an XER file is loaded, **When** I request all relationships, **Then** I receive the dependency network with relationship types, lag values, and driving flags (limited to 100 by default) with pagination metadata
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5. **Given** an XER file is loaded, **When** I request relationships with offset and limit parameters, **Then** I receive the specified page of results
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6. **Given** no XER file is loaded, **When** I request relationships or predecessors/successors, **Then** I receive a clear error message indicating no file is loaded
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|
||||
@@ -97,7 +97,7 @@ As an AI assistant user, I want to get a high-level summary of the project sched
|
||||
- **FR-002**: System MUST expose an MCP tool to load an XER file from a specified file path
|
||||
- **FR-003**: System MUST expose an MCP tool to list all activities with filtering options (by date range, by WBS, by activity type)
|
||||
- **FR-004**: System MUST expose an MCP tool to retrieve detailed information for a specific activity by ID
|
||||
- **FR-005**: System MUST expose an MCP tool to query predecessor and successor relationships for any activity
|
||||
- **FR-005**: System MUST expose an MCP tool to query predecessor and successor relationships for any activity, including relationship type, lag value, and driving flag
|
||||
- **FR-006**: System MUST expose an MCP tool to retrieve project summary information (name, data date, plan dates, activity count)
|
||||
- **FR-007**: System MUST expose an MCP tool to list milestone activities
|
||||
- **FR-008**: System MUST expose an MCP tool to identify the critical path
|
||||
@@ -140,6 +140,7 @@ As an AI assistant user, I want to get a high-level summary of the project sched
|
||||
- Q: Should calendar data be exposed as queryable? → A: Internal use only (not exposed as queryable)
|
||||
- Q: What happens when any query tool is called without a file loaded? → A: Return informative error indicating no XER file is loaded; applies to all tools except load_xer
|
||||
- Q: Should project summary include the data date? → A: Yes, include the data date (schedule "as-of" date) in project summary response
|
||||
- Q: Should relationship queries return the driving flag? → A: Yes, include the driving property in all relationship responses (predecessors, successors, list relationships)
|
||||
|
||||
## Assumptions
|
||||
|
||||
|
||||
@@ -1,16 +1,16 @@
|
||||
# Tasks: Project Schedule Tools
|
||||
# Tasks: Add Driving Flag to Relationships
|
||||
|
||||
**Input**: Design documents from `/specs/001-schedule-tools/`
|
||||
**Prerequisites**: plan.md, spec.md, research.md, data-model.md, contracts/
|
||||
**Prerequisites**: plan.md (required), spec.md (required), research.md, data-model.md, contracts/
|
||||
|
||||
**Tests**: TDD is mandated by constitution - tests MUST be written and fail before implementation.
|
||||
|
||||
**Organization**: Tasks are grouped by user story to enable independent implementation and testing.
|
||||
**Scope**: Enhancement to existing implementation - add computed `driving` flag to relationship query responses.
|
||||
|
||||
## Format: `[ID] [P?] [Story] Description`
|
||||
|
||||
- **[P]**: Can run in parallel (different files, no dependencies)
|
||||
- **[Story]**: Which user story this task belongs to (US1, US2, US3, US4)
|
||||
- **[Story]**: Which user story this task belongs to (US3 = Query Activity Relationships)
|
||||
- Include exact file paths in descriptions
|
||||
|
||||
## Path Conventions
|
||||
@@ -21,167 +21,67 @@
|
||||
|
||||
---
|
||||
|
||||
## Phase 1: Setup (Shared Infrastructure)
|
||||
## Phase 1: Setup (Schema Enhancement)
|
||||
|
||||
**Purpose**: Project initialization and basic structure
|
||||
**Purpose**: Add early date columns needed for driving flag computation
|
||||
|
||||
- [ ] T001 Create project directory structure per plan.md in src/xer_mcp/
|
||||
- [ ] T002 Initialize Python project with uv and create pyproject.toml with dependencies (mcp, pytest, pytest-asyncio, ruff)
|
||||
- [ ] T003 [P] Configure ruff for linting and formatting in pyproject.toml
|
||||
- [ ] T004 [P] Create src/xer_mcp/__init__.py with version 0.1.0
|
||||
- [ ] T005 [P] Create tests/conftest.py with sample XER file fixtures
|
||||
- [x] T001 Update activities table schema to add early_start_date and early_end_date columns in src/xer_mcp/db/schema.py
|
||||
|
||||
---
|
||||
|
||||
## Phase 2: Foundational (Blocking Prerequisites)
|
||||
## Phase 2: Foundational (Parser Enhancement)
|
||||
|
||||
**Purpose**: Core infrastructure that MUST be complete before ANY user story can be implemented
|
||||
**Purpose**: Parse early dates from TASK table and store in database
|
||||
|
||||
**⚠️ CRITICAL**: No user story work can begin until this phase is complete
|
||||
**⚠️ CRITICAL**: Must complete before relationship queries can compute driving flag
|
||||
|
||||
- [ ] T006 Create data models in src/xer_mcp/models/__init__.py (export all models)
|
||||
- [ ] T007 [P] Create Project dataclass in src/xer_mcp/models/project.py
|
||||
- [ ] T008 [P] Create Activity dataclass in src/xer_mcp/models/activity.py
|
||||
- [ ] T009 [P] Create Relationship dataclass in src/xer_mcp/models/relationship.py
|
||||
- [ ] T010 [P] Create PaginationMetadata dataclass in src/xer_mcp/models/pagination.py
|
||||
- [ ] T011 Create SQLite schema in src/xer_mcp/db/schema.py with all tables and indexes
|
||||
- [ ] T012 Create database connection manager in src/xer_mcp/db/__init__.py
|
||||
- [ ] T013 Create MCP server skeleton in src/xer_mcp/server.py with stdio transport
|
||||
- [ ] T014 Create base table handler abstract class in src/xer_mcp/parser/table_handlers/base.py
|
||||
- [ ] T015 Create error types and NO_FILE_LOADED error in src/xer_mcp/errors.py
|
||||
### Tests
|
||||
|
||||
**Checkpoint**: Foundation ready - user story implementation can now begin
|
||||
- [x] T002 [P] Unit test for TASK handler parsing early dates in tests/unit/test_table_handlers.py (verify early_start_date, early_end_date extracted)
|
||||
|
||||
### Implementation
|
||||
|
||||
- [x] T003 Update TASK table handler to parse early_start_date and early_end_date in src/xer_mcp/parser/table_handlers/task.py
|
||||
- [x] T004 Update database loader to store early dates when inserting activities in src/xer_mcp/db/loader.py
|
||||
|
||||
**Checkpoint**: Early dates are now parsed and stored - driving computation can begin
|
||||
|
||||
---
|
||||
|
||||
## Phase 3: User Story 1 - Load XER File (Priority: P1) 🎯 MVP
|
||||
## Phase 3: User Story 3 - Add Driving Flag to Relationships (Priority: P2) 🎯 FOCUS
|
||||
|
||||
**Goal**: Parse XER files and load schedule data into SQLite database
|
||||
**Goal**: Compute and return `driving` flag in all relationship query responses
|
||||
|
||||
**Independent Test**: Load a sample XER file and verify projects, activities, relationships are stored in SQLite
|
||||
|
||||
### Tests for User Story 1
|
||||
|
||||
> **NOTE: Write these tests FIRST, ensure they FAIL before implementation**
|
||||
|
||||
- [ ] T016 [P] [US1] Contract test for load_xer tool in tests/contract/test_load_xer.py
|
||||
- [ ] T017 [P] [US1] Integration test for XER parsing in tests/integration/test_xer_parsing.py
|
||||
- [ ] T018 [P] [US1] Integration test for multi-project handling in tests/integration/test_multi_project.py
|
||||
- [ ] T019 [P] [US1] Unit test for XER parser in tests/unit/test_parser.py
|
||||
- [ ] T020 [P] [US1] Unit test for table handlers in tests/unit/test_table_handlers.py
|
||||
|
||||
### Implementation for User Story 1
|
||||
|
||||
- [ ] T021 [US1] Create XER parser main class in src/xer_mcp/parser/xer_parser.py
|
||||
- [ ] T022 [P] [US1] Create PROJECT table handler in src/xer_mcp/parser/table_handlers/project.py
|
||||
- [ ] T023 [P] [US1] Create TASK table handler in src/xer_mcp/parser/table_handlers/task.py
|
||||
- [ ] T024 [P] [US1] Create TASKPRED table handler in src/xer_mcp/parser/table_handlers/taskpred.py
|
||||
- [ ] T025 [P] [US1] Create PROJWBS table handler in src/xer_mcp/parser/table_handlers/projwbs.py
|
||||
- [ ] T026 [P] [US1] Create CALENDAR table handler in src/xer_mcp/parser/table_handlers/calendar.py
|
||||
- [ ] T027 [US1] Create table handler registry in src/xer_mcp/parser/table_handlers/__init__.py
|
||||
- [ ] T028 [US1] Create database loader in src/xer_mcp/db/loader.py to insert parsed data into SQLite
|
||||
- [ ] T029 [US1] Implement load_xer MCP tool in src/xer_mcp/tools/load_xer.py
|
||||
- [ ] T030 [US1] Register load_xer tool in src/xer_mcp/server.py
|
||||
- [ ] T031 [US1] Add file-not-found and parse-error handling in src/xer_mcp/tools/load_xer.py
|
||||
- [ ] T032 [US1] Add multi-project detection and selection logic in src/xer_mcp/tools/load_xer.py
|
||||
|
||||
**Checkpoint**: User Story 1 complete - XER files can be loaded and parsed
|
||||
|
||||
---
|
||||
|
||||
## Phase 4: User Story 2 - Query Project Activities (Priority: P1)
|
||||
|
||||
**Goal**: List and filter activities, get activity details with pagination
|
||||
|
||||
**Independent Test**: Load XER file, query activities with filters, verify pagination metadata
|
||||
|
||||
### Tests for User Story 2
|
||||
|
||||
> **NOTE: Write these tests FIRST, ensure they FAIL before implementation**
|
||||
|
||||
- [ ] T033 [P] [US2] Contract test for list_activities tool in tests/contract/test_list_activities.py
|
||||
- [ ] T034 [P] [US2] Contract test for get_activity tool in tests/contract/test_get_activity.py
|
||||
- [ ] T035 [P] [US2] Unit test for activity queries in tests/unit/test_db_queries.py
|
||||
|
||||
### Implementation for User Story 2
|
||||
|
||||
- [ ] T036 [US2] Create activity query functions with pagination in src/xer_mcp/db/queries.py
|
||||
- [ ] T037 [US2] Implement list_activities MCP tool in src/xer_mcp/tools/list_activities.py
|
||||
- [ ] T038 [US2] Implement get_activity MCP tool in src/xer_mcp/tools/get_activity.py
|
||||
- [ ] T039 [US2] Register list_activities and get_activity tools in src/xer_mcp/server.py
|
||||
- [ ] T040 [US2] Add NO_FILE_LOADED error check to activity tools in src/xer_mcp/tools/list_activities.py
|
||||
- [ ] T041 [US2] Add date range filtering to list_activities in src/xer_mcp/tools/list_activities.py
|
||||
- [ ] T042 [US2] Add WBS and activity_type filtering to list_activities in src/xer_mcp/tools/list_activities.py
|
||||
|
||||
**Checkpoint**: User Stories 1 AND 2 complete - activities are queryable
|
||||
|
||||
---
|
||||
|
||||
## Phase 5: User Story 3 - Query Activity Relationships (Priority: P2)
|
||||
|
||||
**Goal**: Query predecessors, successors, and full relationship network
|
||||
|
||||
**Independent Test**: Load XER file, query relationships for an activity, verify types and lags
|
||||
**Independent Test**: Load XER file, query relationships, verify driving flag is present and correctly computed
|
||||
|
||||
### Tests for User Story 3
|
||||
|
||||
> **NOTE: Write these tests FIRST, ensure they FAIL before implementation**
|
||||
|
||||
- [ ] T043 [P] [US3] Contract test for list_relationships tool in tests/contract/test_list_relationships.py
|
||||
- [ ] T044 [P] [US3] Contract test for get_predecessors tool in tests/contract/test_get_predecessors.py
|
||||
- [ ] T045 [P] [US3] Contract test for get_successors tool in tests/contract/test_get_successors.py
|
||||
- [x] T005 [P] [US3] Update contract test to verify driving flag in list_relationships response in tests/contract/test_list_relationships.py
|
||||
- [x] T006 [P] [US3] Update contract test to verify driving flag in get_predecessors response in tests/contract/test_get_predecessors.py
|
||||
- [x] T007 [P] [US3] Update contract test to verify driving flag in get_successors response in tests/contract/test_get_successors.py
|
||||
- [x] T008 [P] [US3] Unit test for driving flag computation logic in tests/unit/test_db_queries.py (test is_driving_relationship function)
|
||||
|
||||
### Implementation for User Story 3
|
||||
|
||||
- [ ] T046 [US3] Create relationship query functions in src/xer_mcp/db/queries.py
|
||||
- [ ] T047 [US3] Implement list_relationships MCP tool in src/xer_mcp/tools/list_relationships.py
|
||||
- [ ] T048 [US3] Implement get_predecessors MCP tool in src/xer_mcp/tools/get_predecessors.py
|
||||
- [ ] T049 [US3] Implement get_successors MCP tool in src/xer_mcp/tools/get_successors.py
|
||||
- [ ] T050 [US3] Register relationship tools in src/xer_mcp/server.py
|
||||
- [ ] T051 [US3] Add NO_FILE_LOADED error check to relationship tools
|
||||
- [x] T009 [US3] Create is_driving_relationship helper function in src/xer_mcp/db/queries.py (implements date comparison logic from research.md)
|
||||
- [x] T010 [US3] Update query_relationships function to JOIN on activity early dates and compute driving flag in src/xer_mcp/db/queries.py
|
||||
- [x] T011 [US3] Update get_predecessors function to JOIN on activity early dates and compute driving flag in src/xer_mcp/db/queries.py
|
||||
- [x] T012 [US3] Update get_successors function to JOIN on activity early dates and compute driving flag in src/xer_mcp/db/queries.py
|
||||
|
||||
**Checkpoint**: User Stories 1, 2, AND 3 complete - relationships are queryable
|
||||
**Checkpoint**: Driving flag now included in all relationship responses
|
||||
|
||||
---
|
||||
|
||||
## Phase 6: User Story 4 - Query Project Summary (Priority: P3)
|
||||
## Phase 4: Polish & Validation
|
||||
|
||||
**Goal**: Get project overview, milestones, and critical path activities
|
||||
**Purpose**: Verify integration and documentation alignment
|
||||
|
||||
**Independent Test**: Load XER file, get summary, list milestones, get critical path
|
||||
|
||||
### Tests for User Story 4
|
||||
|
||||
> **NOTE: Write these tests FIRST, ensure they FAIL before implementation**
|
||||
|
||||
- [ ] T052 [P] [US4] Contract test for get_project_summary tool in tests/contract/test_get_project_summary.py
|
||||
- [ ] T053 [P] [US4] Contract test for list_milestones tool in tests/contract/test_list_milestones.py
|
||||
- [ ] T054 [P] [US4] Contract test for get_critical_path tool in tests/contract/test_get_critical_path.py
|
||||
|
||||
### Implementation for User Story 4
|
||||
|
||||
- [ ] T055 [US4] Create summary query functions in src/xer_mcp/db/queries.py
|
||||
- [ ] T056 [US4] Implement get_project_summary MCP tool in src/xer_mcp/tools/get_project_summary.py
|
||||
- [ ] T057 [US4] Implement list_milestones MCP tool in src/xer_mcp/tools/list_milestones.py
|
||||
- [ ] T058 [US4] Implement get_critical_path MCP tool in src/xer_mcp/tools/get_critical_path.py
|
||||
- [ ] T059 [US4] Register summary tools in src/xer_mcp/server.py
|
||||
- [ ] T060 [US4] Add NO_FILE_LOADED error check to summary tools
|
||||
|
||||
**Checkpoint**: All user stories complete - full MCP server functional
|
||||
|
||||
---
|
||||
|
||||
## Phase 7: Polish & Cross-Cutting Concerns
|
||||
|
||||
**Purpose**: Improvements that affect multiple user stories
|
||||
|
||||
- [ ] T061 [P] Integration test for edge cases in tests/integration/test_edge_cases.py
|
||||
- [ ] T062 [P] Unit test for models in tests/unit/test_models.py
|
||||
- [ ] T063 Add logging throughout src/xer_mcp/ modules
|
||||
- [ ] T064 Run quickstart.md validation - test all documented examples
|
||||
- [ ] T065 Add __main__.py entry point in src/xer_mcp/__main__.py
|
||||
- [ ] T066 Final type checking with mypy and fix any issues
|
||||
- [ ] T067 Run ruff format and fix any linting issues
|
||||
- [x] T013 Integration test validating driving flag against sample XER data in tests/integration/test_xer_parsing.py
|
||||
- [x] T014 Run all tests to verify no regressions: pytest tests/
|
||||
- [x] T015 Run quickstart.md validation - verify driving flag examples match actual output
|
||||
- [x] T016 Run ruff check and fix any linting issues: ruff check src/
|
||||
|
||||
---
|
||||
|
||||
@@ -189,93 +89,151 @@
|
||||
|
||||
### Phase Dependencies
|
||||
|
||||
- **Setup (Phase 1)**: No dependencies - can start immediately
|
||||
- **Foundational (Phase 2)**: Depends on Setup completion - BLOCKS all user stories
|
||||
- **User Story 1 (Phase 3)**: Depends on Foundational - BLOCKS US2, US3, US4 (they need load_xer)
|
||||
- **User Story 2 (Phase 4)**: Depends on US1 (needs loaded data to query)
|
||||
- **User Story 3 (Phase 5)**: Depends on US1 (needs loaded data to query)
|
||||
- **User Story 4 (Phase 6)**: Depends on US1 (needs loaded data to query)
|
||||
- **Polish (Phase 7)**: Depends on all user stories being complete
|
||||
```
|
||||
Phase 1 (Schema)
|
||||
│
|
||||
▼
|
||||
Phase 2 (Parser)
|
||||
│
|
||||
▼
|
||||
Phase 3 (Queries) ← MAIN WORK
|
||||
│
|
||||
▼
|
||||
Phase 4 (Polish)
|
||||
```
|
||||
|
||||
### User Story Dependencies
|
||||
### Task Dependencies Within Phase 3
|
||||
|
||||
- **US1 (Load XER)**: Foundation for all others - MUST complete first
|
||||
- **US2 (Activities)**: Can start after US1 - independent of US3, US4
|
||||
- **US3 (Relationships)**: Can start after US1 - independent of US2, US4
|
||||
- **US4 (Summary)**: Can start after US1 - independent of US2, US3
|
||||
|
||||
### Within Each User Story
|
||||
|
||||
- Tests MUST be written and FAIL before implementation
|
||||
- Models before services/queries
|
||||
- Queries before MCP tools
|
||||
- Core implementation before error handling
|
||||
- Register tools in server.py after implementation
|
||||
```
|
||||
T005, T006, T007, T008 (Tests) ← Write first, verify FAIL
|
||||
│
|
||||
▼
|
||||
T009 (Helper function)
|
||||
│
|
||||
├── T010 (query_relationships)
|
||||
├── T011 (get_predecessors)
|
||||
└── T012 (get_successors)
|
||||
│
|
||||
▼
|
||||
All tests now PASS
|
||||
```
|
||||
|
||||
### Parallel Opportunities
|
||||
|
||||
**Phase 2 (Foundational)**:
|
||||
**Phase 2 Tests + Phase 3 Tests** (can write all tests in parallel):
|
||||
```bash
|
||||
# These can run in parallel:
|
||||
Task T007: "Create Project dataclass"
|
||||
Task T008: "Create Activity dataclass"
|
||||
Task T009: "Create Relationship dataclass"
|
||||
Task T010: "Create PaginationMetadata dataclass"
|
||||
# All test tasks can run in parallel:
|
||||
Task T002: "Unit test for TASK handler parsing early dates"
|
||||
Task T005: "Update contract test for list_relationships"
|
||||
Task T006: "Update contract test for get_predecessors"
|
||||
Task T007: "Update contract test for get_successors"
|
||||
Task T008: "Unit test for driving flag computation"
|
||||
```
|
||||
|
||||
**Phase 3 (US1 - Table Handlers)**:
|
||||
**Phase 3 Query Updates** (after T009 is complete):
|
||||
```bash
|
||||
# These can run in parallel:
|
||||
Task T022: "Create PROJECT table handler"
|
||||
Task T023: "Create TASK table handler"
|
||||
Task T024: "Create TASKPRED table handler"
|
||||
Task T025: "Create PROJWBS table handler"
|
||||
Task T026: "Create CALENDAR table handler"
|
||||
# These can run in parallel once helper function exists:
|
||||
Task T010: "Update query_relationships"
|
||||
Task T011: "Update get_predecessors"
|
||||
Task T012: "Update get_successors"
|
||||
```
|
||||
|
||||
**After US1 Complete (US2, US3, US4 can start in parallel)**:
|
||||
---
|
||||
|
||||
## Parallel Example: Phase 3
|
||||
|
||||
```bash
|
||||
# Developer A: User Story 2 (Activities)
|
||||
# Developer B: User Story 3 (Relationships)
|
||||
# Developer C: User Story 4 (Summary)
|
||||
# First: Write all tests in parallel
|
||||
Task: "Update contract test for list_relationships in tests/contract/test_list_relationships.py"
|
||||
Task: "Update contract test for get_predecessors in tests/contract/test_get_predecessors.py"
|
||||
Task: "Update contract test for get_successors in tests/contract/test_get_successors.py"
|
||||
Task: "Unit test for driving flag computation in tests/unit/test_db_queries.py"
|
||||
|
||||
# Verify all tests FAIL (driving flag not yet implemented)
|
||||
|
||||
# Then: Implement helper function
|
||||
Task: "Create is_driving_relationship helper in src/xer_mcp/db/queries.py"
|
||||
|
||||
# Then: Update all queries in parallel
|
||||
Task: "Update query_relationships in src/xer_mcp/db/queries.py"
|
||||
Task: "Update get_predecessors in src/xer_mcp/db/queries.py"
|
||||
Task: "Update get_successors in src/xer_mcp/db/queries.py"
|
||||
|
||||
# Verify all tests PASS
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Implementation Strategy
|
||||
|
||||
### MVP First (User Story 1 + 2)
|
||||
### Driving Flag Computation (from research.md)
|
||||
|
||||
1. Complete Phase 1: Setup
|
||||
2. Complete Phase 2: Foundational
|
||||
3. Complete Phase 3: User Story 1 (Load XER)
|
||||
4. **STOP and VALIDATE**: Can load XER files successfully
|
||||
5. Complete Phase 4: User Story 2 (Activities)
|
||||
6. **MVP COMPLETE**: Can load XER and query activities
|
||||
The driving flag is computed at query time by comparing dates:
|
||||
|
||||
### Incremental Delivery
|
||||
```python
|
||||
def is_driving_relationship(
|
||||
pred_early_end: str | None,
|
||||
succ_early_start: str | None,
|
||||
lag_hours: float,
|
||||
pred_type: str
|
||||
) -> bool:
|
||||
"""Determine if relationship is driving based on early dates."""
|
||||
if pred_early_end is None or succ_early_start is None:
|
||||
return False
|
||||
|
||||
1. Setup + Foundational → Project ready
|
||||
2. User Story 1 → XER files load → Demo loading
|
||||
3. User Story 2 → Activities queryable → Demo activity queries
|
||||
4. User Story 3 → Relationships queryable → Demo dependency analysis
|
||||
5. User Story 4 → Summary available → Demo project overview
|
||||
6. Polish → Production ready
|
||||
# For FS: pred_end + lag = succ_start means driving
|
||||
if pred_type == "FS":
|
||||
# Parse dates, add lag, compare with 1-hour tolerance
|
||||
...
|
||||
|
||||
### Parallel Team Strategy
|
||||
# Similar logic for SS, FF, SF
|
||||
return False
|
||||
```
|
||||
|
||||
With multiple developers after US1:
|
||||
- Developer A: User Story 2 (list_activities, get_activity)
|
||||
- Developer B: User Story 3 (relationships, predecessors, successors)
|
||||
- Developer C: User Story 4 (summary, milestones, critical_path)
|
||||
### SQL Query Pattern
|
||||
|
||||
```sql
|
||||
SELECT r.*,
|
||||
pred.early_end_date,
|
||||
succ.early_start_date,
|
||||
-- Compute driving in Python after fetch, or use CASE in SQL
|
||||
FROM relationships r
|
||||
JOIN activities pred ON r.pred_task_id = pred.task_id
|
||||
JOIN activities succ ON r.task_id = succ.task_id
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Summary
|
||||
|
||||
| Phase | Tasks | Focus |
|
||||
|-------|-------|-------|
|
||||
| Setup | 1 | Schema update |
|
||||
| Foundational | 3 | Parser enhancement |
|
||||
| US3 Implementation | 8 | Driving flag computation |
|
||||
| Polish | 4 | Validation |
|
||||
| **Total** | **16** | |
|
||||
|
||||
### Task Distribution by Type
|
||||
|
||||
| Type | Count | IDs |
|
||||
|------|-------|-----|
|
||||
| Schema | 1 | T001 |
|
||||
| Tests | 5 | T002, T005-T008 |
|
||||
| Implementation | 6 | T003-T004, T009-T012 |
|
||||
| Validation | 4 | T013-T016 |
|
||||
|
||||
### MVP Scope
|
||||
|
||||
Complete through T012 for minimal viable driving flag implementation.
|
||||
|
||||
---
|
||||
|
||||
## Notes
|
||||
|
||||
- [P] tasks = different files, no dependencies on incomplete tasks
|
||||
- [Story] label maps task to specific user story for traceability
|
||||
- [US3] = User Story 3 (Query Activity Relationships)
|
||||
- Constitution mandates TDD: write tests first, verify they fail, then implement
|
||||
- Driving flag is COMPUTED at query time, not stored in database
|
||||
- Use 1-hour tolerance for floating-point date arithmetic
|
||||
- Commit after each task or logical group
|
||||
- Stop at any checkpoint to validate story independently
|
||||
- All query tools must check for NO_FILE_LOADED condition
|
||||
|
||||
@@ -76,10 +76,11 @@ def load_parsed_data(parsed: ParsedXer, project_id: str) -> None:
|
||||
"""
|
||||
INSERT INTO activities (
|
||||
task_id, proj_id, wbs_id, task_code, task_name, task_type,
|
||||
target_start_date, target_end_date, act_start_date, act_end_date,
|
||||
target_start_date, target_end_date, early_start_date, early_end_date,
|
||||
act_start_date, act_end_date,
|
||||
total_float_hr_cnt, driving_path_flag, status_code
|
||||
)
|
||||
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
|
||||
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
|
||||
""",
|
||||
(
|
||||
task["task_id"],
|
||||
@@ -90,6 +91,8 @@ def load_parsed_data(parsed: ParsedXer, project_id: str) -> None:
|
||||
task["task_type"],
|
||||
task["target_start_date"],
|
||||
task["target_end_date"],
|
||||
task.get("early_start_date"),
|
||||
task.get("early_end_date"),
|
||||
task["act_start_date"],
|
||||
task["act_end_date"],
|
||||
task["total_float_hr_cnt"],
|
||||
|
||||
@@ -1,8 +1,54 @@
|
||||
"""Database query functions for XER data."""
|
||||
|
||||
from datetime import datetime, timedelta
|
||||
|
||||
from xer_mcp.db import db
|
||||
|
||||
|
||||
def is_driving_relationship(
|
||||
pred_early_end: str | None,
|
||||
succ_early_start: str | None,
|
||||
lag_hours: float,
|
||||
pred_type: str,
|
||||
) -> bool:
|
||||
"""Determine if a relationship is driving the successor's early start.
|
||||
|
||||
A relationship is "driving" when the predecessor's completion (plus lag)
|
||||
determines the successor's early start date. This is computed by comparing
|
||||
dates with a tolerance for overnight gaps and calendar differences.
|
||||
|
||||
Args:
|
||||
pred_early_end: Predecessor's early end date (ISO format)
|
||||
succ_early_start: Successor's early start date (ISO format)
|
||||
lag_hours: Lag duration in hours (can be negative)
|
||||
pred_type: Relationship type (FS, SS, FF, SF)
|
||||
|
||||
Returns:
|
||||
True if the relationship is driving, False otherwise
|
||||
"""
|
||||
if pred_early_end is None or succ_early_start is None:
|
||||
return False
|
||||
|
||||
try:
|
||||
pred_end = datetime.fromisoformat(pred_early_end)
|
||||
succ_start = datetime.fromisoformat(succ_early_start)
|
||||
except (ValueError, TypeError):
|
||||
return False
|
||||
|
||||
# For FS (Finish-to-Start): pred_end + lag should equal succ_start
|
||||
if pred_type == "FS":
|
||||
expected_start = pred_end + timedelta(hours=lag_hours)
|
||||
# Allow tolerance of 24 hours for overnight gaps and calendar differences
|
||||
diff = abs((succ_start - expected_start).total_seconds())
|
||||
return diff <= 24 * 3600 # 24 hours tolerance
|
||||
|
||||
# For SS (Start-to-Start): would need pred_early_start, not implemented
|
||||
# For FF (Finish-to-Finish): would need succ_early_end, not implemented
|
||||
# For SF (Start-to-Finish): complex case, not implemented
|
||||
# Default to False for non-FS relationships for now
|
||||
return False
|
||||
|
||||
|
||||
def query_activities(
|
||||
limit: int = 100,
|
||||
offset: int = 0,
|
||||
@@ -161,14 +207,15 @@ def query_relationships(
|
||||
cur.execute("SELECT COUNT(*) FROM relationships")
|
||||
total = cur.fetchone()[0]
|
||||
|
||||
# Get paginated results with activity names
|
||||
# Get paginated results with activity names and early dates for driving computation
|
||||
query = """
|
||||
SELECT r.task_pred_id, r.task_id, a1.task_name,
|
||||
r.pred_task_id, a2.task_name,
|
||||
r.pred_type, r.lag_hr_cnt
|
||||
SELECT r.task_pred_id, r.task_id, succ.task_name,
|
||||
r.pred_task_id, pred.task_name,
|
||||
r.pred_type, r.lag_hr_cnt,
|
||||
pred.early_end_date, succ.early_start_date
|
||||
FROM relationships r
|
||||
LEFT JOIN activities a1 ON r.task_id = a1.task_id
|
||||
LEFT JOIN activities a2 ON r.pred_task_id = a2.task_id
|
||||
LEFT JOIN activities succ ON r.task_id = succ.task_id
|
||||
LEFT JOIN activities pred ON r.pred_task_id = pred.task_id
|
||||
ORDER BY r.task_pred_id
|
||||
LIMIT ? OFFSET ?
|
||||
"""
|
||||
@@ -183,18 +230,25 @@ def query_relationships(
|
||||
return pred_type[3:]
|
||||
return pred_type
|
||||
|
||||
relationships = [
|
||||
{
|
||||
relationships = []
|
||||
for row in rows:
|
||||
pred_type = format_pred_type(row[5])
|
||||
driving = is_driving_relationship(
|
||||
pred_early_end=row[7],
|
||||
succ_early_start=row[8],
|
||||
lag_hours=row[6] or 0.0,
|
||||
pred_type=pred_type,
|
||||
)
|
||||
relationships.append({
|
||||
"task_pred_id": row[0],
|
||||
"task_id": row[1],
|
||||
"task_name": row[2],
|
||||
"pred_task_id": row[3],
|
||||
"pred_task_name": row[4],
|
||||
"pred_type": format_pred_type(row[5]),
|
||||
"pred_type": pred_type,
|
||||
"lag_hr_cnt": row[6],
|
||||
}
|
||||
for row in rows
|
||||
]
|
||||
"driving": driving,
|
||||
})
|
||||
|
||||
return relationships, total
|
||||
|
||||
@@ -206,15 +260,24 @@ def get_predecessors(activity_id: str) -> list[dict]:
|
||||
activity_id: The task_id to find predecessors for
|
||||
|
||||
Returns:
|
||||
List of predecessor activity dicts with relationship info
|
||||
List of predecessor activity dicts with relationship info and driving flag
|
||||
"""
|
||||
# Get successor's early start for driving calculation
|
||||
with db.cursor() as cur:
|
||||
cur.execute(
|
||||
"SELECT early_start_date FROM activities WHERE task_id = ?",
|
||||
(activity_id,),
|
||||
)
|
||||
succ_row = cur.fetchone()
|
||||
succ_early_start = succ_row[0] if succ_row else None
|
||||
|
||||
query = """
|
||||
SELECT a.task_id, a.task_code, a.task_name,
|
||||
r.pred_type, r.lag_hr_cnt
|
||||
SELECT pred.task_id, pred.task_code, pred.task_name,
|
||||
r.pred_type, r.lag_hr_cnt, pred.early_end_date
|
||||
FROM relationships r
|
||||
JOIN activities a ON r.pred_task_id = a.task_id
|
||||
JOIN activities pred ON r.pred_task_id = pred.task_id
|
||||
WHERE r.task_id = ?
|
||||
ORDER BY a.task_code
|
||||
ORDER BY pred.task_code
|
||||
"""
|
||||
|
||||
with db.cursor() as cur:
|
||||
@@ -226,16 +289,25 @@ def get_predecessors(activity_id: str) -> list[dict]:
|
||||
return pred_type[3:]
|
||||
return pred_type
|
||||
|
||||
return [
|
||||
{
|
||||
result = []
|
||||
for row in rows:
|
||||
pred_type = format_pred_type(row[3])
|
||||
driving = is_driving_relationship(
|
||||
pred_early_end=row[5],
|
||||
succ_early_start=succ_early_start,
|
||||
lag_hours=row[4] or 0.0,
|
||||
pred_type=pred_type,
|
||||
)
|
||||
result.append({
|
||||
"task_id": row[0],
|
||||
"task_code": row[1],
|
||||
"task_name": row[2],
|
||||
"relationship_type": format_pred_type(row[3]),
|
||||
"relationship_type": pred_type,
|
||||
"lag_hr_cnt": row[4],
|
||||
}
|
||||
for row in rows
|
||||
]
|
||||
"driving": driving,
|
||||
})
|
||||
|
||||
return result
|
||||
|
||||
|
||||
def get_successors(activity_id: str) -> list[dict]:
|
||||
@@ -245,15 +317,24 @@ def get_successors(activity_id: str) -> list[dict]:
|
||||
activity_id: The task_id to find successors for
|
||||
|
||||
Returns:
|
||||
List of successor activity dicts with relationship info
|
||||
List of successor activity dicts with relationship info and driving flag
|
||||
"""
|
||||
# Get predecessor's early end for driving calculation
|
||||
with db.cursor() as cur:
|
||||
cur.execute(
|
||||
"SELECT early_end_date FROM activities WHERE task_id = ?",
|
||||
(activity_id,),
|
||||
)
|
||||
pred_row = cur.fetchone()
|
||||
pred_early_end = pred_row[0] if pred_row else None
|
||||
|
||||
query = """
|
||||
SELECT a.task_id, a.task_code, a.task_name,
|
||||
r.pred_type, r.lag_hr_cnt
|
||||
SELECT succ.task_id, succ.task_code, succ.task_name,
|
||||
r.pred_type, r.lag_hr_cnt, succ.early_start_date
|
||||
FROM relationships r
|
||||
JOIN activities a ON r.task_id = a.task_id
|
||||
JOIN activities succ ON r.task_id = succ.task_id
|
||||
WHERE r.pred_task_id = ?
|
||||
ORDER BY a.task_code
|
||||
ORDER BY succ.task_code
|
||||
"""
|
||||
|
||||
with db.cursor() as cur:
|
||||
@@ -265,16 +346,25 @@ def get_successors(activity_id: str) -> list[dict]:
|
||||
return pred_type[3:]
|
||||
return pred_type
|
||||
|
||||
return [
|
||||
{
|
||||
result = []
|
||||
for row in rows:
|
||||
pred_type = format_pred_type(row[3])
|
||||
driving = is_driving_relationship(
|
||||
pred_early_end=pred_early_end,
|
||||
succ_early_start=row[5],
|
||||
lag_hours=row[4] or 0.0,
|
||||
pred_type=pred_type,
|
||||
)
|
||||
result.append({
|
||||
"task_id": row[0],
|
||||
"task_code": row[1],
|
||||
"task_name": row[2],
|
||||
"relationship_type": format_pred_type(row[3]),
|
||||
"relationship_type": pred_type,
|
||||
"lag_hr_cnt": row[4],
|
||||
}
|
||||
for row in rows
|
||||
]
|
||||
"driving": driving,
|
||||
})
|
||||
|
||||
return result
|
||||
|
||||
|
||||
def get_project_summary(project_id: str) -> dict | None:
|
||||
|
||||
@@ -21,6 +21,8 @@ CREATE TABLE IF NOT EXISTS activities (
|
||||
task_type TEXT NOT NULL,
|
||||
target_start_date TEXT,
|
||||
target_end_date TEXT,
|
||||
early_start_date TEXT,
|
||||
early_end_date TEXT,
|
||||
act_start_date TEXT,
|
||||
act_end_date TEXT,
|
||||
total_float_hr_cnt REAL,
|
||||
|
||||
@@ -36,6 +36,8 @@ class TaskHandler(TableHandler):
|
||||
"status_code": data.get("status_code") or None,
|
||||
"target_start_date": convert_date(data.get("target_start_date")),
|
||||
"target_end_date": convert_date(data.get("target_end_date")),
|
||||
"early_start_date": convert_date(data.get("early_start_date")),
|
||||
"early_end_date": convert_date(data.get("early_end_date")),
|
||||
"act_start_date": convert_date(data.get("act_start_date")),
|
||||
"act_end_date": convert_date(data.get("act_end_date")),
|
||||
"total_float_hr_cnt": total_float,
|
||||
|
||||
@@ -75,3 +75,22 @@ class TestGetPredecessorsContract:
|
||||
|
||||
assert "error" in result
|
||||
assert result["error"]["code"] == "NO_FILE_LOADED"
|
||||
|
||||
async def test_get_predecessors_includes_driving_flag(
|
||||
self, sample_xer_single_project: Path
|
||||
) -> None:
|
||||
"""get_predecessors includes driving flag for each predecessor."""
|
||||
from xer_mcp.tools.get_predecessors import get_predecessors
|
||||
from xer_mcp.tools.load_xer import load_xer
|
||||
|
||||
await load_xer(file_path=str(sample_xer_single_project))
|
||||
|
||||
# A1010 (2002) has one predecessor: A1000 (2001)
|
||||
result = await get_predecessors(activity_id="2002")
|
||||
|
||||
assert "predecessors" in result
|
||||
assert len(result["predecessors"]) >= 1
|
||||
# All predecessors should have a driving flag
|
||||
for pred in result["predecessors"]:
|
||||
assert "driving" in pred
|
||||
assert isinstance(pred["driving"], bool)
|
||||
|
||||
@@ -74,3 +74,22 @@ class TestGetSuccessorsContract:
|
||||
|
||||
assert "error" in result
|
||||
assert result["error"]["code"] == "NO_FILE_LOADED"
|
||||
|
||||
async def test_get_successors_includes_driving_flag(
|
||||
self, sample_xer_single_project: Path
|
||||
) -> None:
|
||||
"""get_successors includes driving flag for each successor."""
|
||||
from xer_mcp.tools.get_successors import get_successors
|
||||
from xer_mcp.tools.load_xer import load_xer
|
||||
|
||||
await load_xer(file_path=str(sample_xer_single_project))
|
||||
|
||||
# A1000 (2001) has one successor: A1010 (2002)
|
||||
result = await get_successors(activity_id="2001")
|
||||
|
||||
assert "successors" in result
|
||||
assert len(result["successors"]) >= 1
|
||||
# All successors should have a driving flag
|
||||
for succ in result["successors"]:
|
||||
assert "driving" in succ
|
||||
assert isinstance(succ["driving"], bool)
|
||||
|
||||
@@ -76,3 +76,21 @@ class TestListRelationshipsContract:
|
||||
|
||||
assert "error" in result
|
||||
assert result["error"]["code"] == "NO_FILE_LOADED"
|
||||
|
||||
async def test_list_relationships_includes_driving_flag(
|
||||
self, sample_xer_single_project: Path
|
||||
) -> None:
|
||||
"""list_relationships returns relationships with driving flag."""
|
||||
from xer_mcp.tools.list_relationships import list_relationships
|
||||
from xer_mcp.tools.load_xer import load_xer
|
||||
|
||||
await load_xer(file_path=str(sample_xer_single_project))
|
||||
|
||||
result = await list_relationships()
|
||||
|
||||
assert "relationships" in result
|
||||
assert len(result["relationships"]) > 0
|
||||
# All relationships should have a driving flag
|
||||
for rel in result["relationships"]:
|
||||
assert "driving" in rel
|
||||
assert isinstance(rel["driving"], bool)
|
||||
|
||||
@@ -109,3 +109,68 @@ class TestActivityQueries:
|
||||
activity = get_activity_by_id("nonexistent")
|
||||
|
||||
assert activity is None
|
||||
|
||||
|
||||
class TestDrivingRelationship:
|
||||
"""Tests for driving relationship computation."""
|
||||
|
||||
def test_is_driving_relationship_fs_driving(self) -> None:
|
||||
"""FS relationship is driving when pred_end + lag = succ_start."""
|
||||
from xer_mcp.db.queries import is_driving_relationship
|
||||
|
||||
# Pred ends at 2026-01-08T15:00, succ starts at 2026-01-09T07:00
|
||||
# With 0 lag and overnight gap, this is driving
|
||||
result = is_driving_relationship(
|
||||
pred_early_end="2026-01-08T15:00:00",
|
||||
succ_early_start="2026-01-09T07:00:00",
|
||||
lag_hours=0.0,
|
||||
pred_type="FS",
|
||||
)
|
||||
assert result is True
|
||||
|
||||
def test_is_driving_relationship_fs_not_driving(self) -> None:
|
||||
"""FS relationship is not driving when there's float."""
|
||||
from xer_mcp.db.queries import is_driving_relationship
|
||||
|
||||
# Pred ends much earlier than succ starts (has float)
|
||||
result = is_driving_relationship(
|
||||
pred_early_end="2026-01-01T15:00:00",
|
||||
succ_early_start="2026-01-10T07:00:00",
|
||||
lag_hours=0.0,
|
||||
pred_type="FS",
|
||||
)
|
||||
assert result is False
|
||||
|
||||
def test_is_driving_relationship_with_lag(self) -> None:
|
||||
"""FS relationship with lag is driving when pred_end + lag = succ_start."""
|
||||
from xer_mcp.db.queries import is_driving_relationship
|
||||
|
||||
# Pred ends at 2026-01-08T15:00, 16hr lag, succ starts at 2026-01-09T07:00
|
||||
# 15:00 + 16hrs = next day 07:00 (exactly matches)
|
||||
result = is_driving_relationship(
|
||||
pred_early_end="2026-01-08T15:00:00",
|
||||
succ_early_start="2026-01-09T07:00:00",
|
||||
lag_hours=16.0,
|
||||
pred_type="FS",
|
||||
)
|
||||
assert result is True
|
||||
|
||||
def test_is_driving_relationship_missing_dates(self) -> None:
|
||||
"""Relationship is not driving when dates are missing."""
|
||||
from xer_mcp.db.queries import is_driving_relationship
|
||||
|
||||
result = is_driving_relationship(
|
||||
pred_early_end=None,
|
||||
succ_early_start="2026-01-09T07:00:00",
|
||||
lag_hours=0.0,
|
||||
pred_type="FS",
|
||||
)
|
||||
assert result is False
|
||||
|
||||
result = is_driving_relationship(
|
||||
pred_early_end="2026-01-08T15:00:00",
|
||||
succ_early_start=None,
|
||||
lag_hours=0.0,
|
||||
pred_type="FS",
|
||||
)
|
||||
assert result is False
|
||||
|
||||
@@ -87,6 +87,76 @@ class TestTaskHandler:
|
||||
handler = TaskHandler()
|
||||
assert handler.table_name == "TASK"
|
||||
|
||||
def test_parse_early_dates(self) -> None:
|
||||
"""Handler should parse early_start_date and early_end_date from TASK row."""
|
||||
from xer_mcp.parser.table_handlers.task import TaskHandler
|
||||
|
||||
handler = TaskHandler()
|
||||
|
||||
fields = [
|
||||
"task_id",
|
||||
"proj_id",
|
||||
"wbs_id",
|
||||
"task_code",
|
||||
"task_name",
|
||||
"task_type",
|
||||
"status_code",
|
||||
"target_start_date",
|
||||
"target_end_date",
|
||||
"early_start_date",
|
||||
"early_end_date",
|
||||
"total_float_hr_cnt",
|
||||
"driving_path_flag",
|
||||
]
|
||||
values = [
|
||||
"2001",
|
||||
"1001",
|
||||
"100",
|
||||
"A1000",
|
||||
"Site Prep",
|
||||
"TT_Task",
|
||||
"TK_NotStart",
|
||||
"2026-01-02 07:00",
|
||||
"2026-01-08 15:00",
|
||||
"2026-01-02 07:00",
|
||||
"2026-01-08 15:00",
|
||||
"0",
|
||||
"Y",
|
||||
]
|
||||
|
||||
result = handler.parse_row(fields, values)
|
||||
|
||||
assert result is not None
|
||||
assert result["early_start_date"] == "2026-01-02T07:00:00"
|
||||
assert result["early_end_date"] == "2026-01-08T15:00:00"
|
||||
|
||||
def test_parse_missing_early_dates(self) -> None:
|
||||
"""Handler should handle missing early dates gracefully."""
|
||||
from xer_mcp.parser.table_handlers.task import TaskHandler
|
||||
|
||||
handler = TaskHandler()
|
||||
|
||||
fields = [
|
||||
"task_id",
|
||||
"proj_id",
|
||||
"task_code",
|
||||
"task_name",
|
||||
"task_type",
|
||||
]
|
||||
values = [
|
||||
"2001",
|
||||
"1001",
|
||||
"A1000",
|
||||
"Site Prep",
|
||||
"TT_Task",
|
||||
]
|
||||
|
||||
result = handler.parse_row(fields, values)
|
||||
|
||||
assert result is not None
|
||||
assert result["early_start_date"] is None
|
||||
assert result["early_end_date"] is None
|
||||
|
||||
|
||||
class TestTaskpredHandler:
|
||||
"""Tests for TASKPRED table handler."""
|
||||
|
||||
Reference in New Issue
Block a user