MPXJ – How To: Read Primavera PMXML files

How To: Read Primavera PMXML files

Primavera P6 can export data in an XML format known as PMXML.

Reading PMXML files

The simplest way to read a PMXML file is to use the UniversalProjectReader:

import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.reader.UniversalProjectReader;

...

UniversalProjectReader reader = new UniversalProjectReader();
ProjectFile project = reader.read("my-sample.xml");

Using PrimaveraPMFileReader

You can work directly with the PrimaveraPMFileReader by replacing UniversalProjectReader with PrimaveraPMFileReader. This provides access to additional options, as described below.

WBS is Full Path

Currently the WBS attribute of summary tasks (WBS entities in P6) will be a dot separated hierarchy of all of the parent WBS attributes. In this example, root.wbs1.wbs2 is the WBS attribute for wbs2 which has the parents root and wbs1. To disabled this behaviour, and simply record the code for the current WBS entry (in the example above wbs2) call the setWbsIsFullPath method, passing in false, as illustrated below.

import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.primavera.PrimaveraPMFileReader;

...

PrimaveraPMFileReader reader = new PrimaveraPMFileReader();
reader.setWbsIsFullPath(false);

Multiple Projects

A PMXML file can contain multiple projects. By default MPXJ reads the first non-external project it finds in the file, otehrwise it defaults to the first project it finds. You can however use MPXJ to list the projects contained in a PMXML file, as shown below:

import net.sf.mpxj.primavera.PrimaveraPMFileReader;

...

PrimaveraPMFileReader reader = new PrimaveraPMFileReader();
FileInputStream is = new FileInputStream("my-sample.xml");
Map<Integer, String> projects = reader.listProjects(is);
System.out.println("ID\tName");
for (Entry<Integer, String> entry : projects.entrySet())
{
   System.out.println(entry.getKey()+"\t"+entry.getValue());
}

The call to listProjects returns a Map whose key is the project ID, and the values are project short names.

Once you have decided which of these projects you want to work with, you can call setProjectID to tell the reader which project to open, as shown below.

import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.primavera.PrimaveraPMFileReader;

...

PrimaveraPMFileReader reader = new PrimaveraPMFileReader();
reader.setProjectID(123);
ProjectFile file = reader.read("my-sample.xml");

Alternatively you can ask MPXJ to read all of the projects contained in the file:

import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.primavera.PrimaveraPMFileReader;

...

PrimaveraPMFileReader reader = new PrimaveraPMFileReader();
InputStream is = new FileInputStream("my-sample.xml");
List<ProjectFile> files = reader.readAll(is);

The call to the readAll method returns a list of ProjectFile instances corresponding to the projects in the PMXML file.

Link Cross-Project Relations

A PMXML file can contain multiple projects with relations between activities which span those projects. By default these cross-project relations are ignored. However, if you set the linkCrossProjectRelations reader attribute to true, MPXJ will attempt to link these relations across projects:

import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.primavera.PrimaveraPMFileReader;

...

PrimaveraPMFileReader reader = new PrimaveraPMFileReader();
reader.setLinkCrossProjectRelations(true);
InputStream is = new FileInputStream("my-sample.xml");
List<ProjectFile> files = reader.readAll(is);