Feature Request: Task-level time-phased cost data access

[CaideSpries]

Summary

I'm building a dashboard that reads MS Project (.mpp) files using MPXJ. I need to access task-level time-phased cost data (monthly cost breakdown), similar to VBA's Task.TimeScaleData() method.

Currently, MPXJ only provides time-phased data at the ResourceAssignment level:

• ResourceAssignment.getTimephasedCost()
• ResourceAssignment.getTimephasedActualCost()
• ResourceAssignment.getTimephasedBaselineCost(int)

The Problem

For budget tasks (tasks without resource assignments), there is no way to get time-phased cost data in MPXJ, even though:

1. MS Project stores this data at the task level
2. VBA can read it via Task.TimeScaleData(StartDate, EndDate, pjTaskTimescaledCost, pjTimescaleMonths)

This causes my dashboard to show ~40% of the values compared to a VBA-based Excel export.

Request

Would it be possible to add task-level time-phased cost methods to the Task class?

For example:

• Task.getTimephasedCost()
• Task.getTimephasedActualCost()
• Task.getTimephasedBaselineCost(int baselineNumber)

Questions

1. Does MPXJ read task-level time-phased data from MPP files but not expose it?
2. If not, is this data stored in a known location in the MPP binary format?
3. Would you be open to a contribution that adds this functionality?

Environment

• MPXJ Version: 15.0.0
• File Format: MPP (MS Project 2019)
• Access Method: Python via JPype

References

• Task.TimeScaleData VBA Method
• PjTaskTimescaledData Enumeration

Thank you for maintaining this excellent library!