How to get the file path of a changed file in RTC with JAVA?

String filePath = "";

for (IWorkspaceHandle wHandle : wHandles) {

       IWorkspace workspace = (IWorkspace) repo.itemManager().fetchCompleteItem(wHandle, IItemManager.DEFAULT, null);

       IWorkspaceConnection wsConn = wm.getWorkspaceConnection(workspace, null);

    // previously I had retrieved the component associated to the versionable

       IComponent component = rawFilesHash.get(versionableHandle);

       IConfiguration configuration = wsConn.configuration(component);

    List<IVersionableHandle> versionableHandleList = new ArrayList<IVersionableHandle>();

    versionableHandleList.add(versionableHandle); 

    List<?> ancestorReports = configuration.locateAncestors(versionableHandleList, monitor);

    IAncestorReport iAncestorReport = (IAncestorReport) ancestorReports.get(0);

    List<INameItemPair> reportList = iAncestorReport.getNameItemPairs();

    for (INameItemPair iNameItemPair : reportList){

        String temp = iNameItemPair.getName();

        if (temp != null) {

            filePath += "/" + temp ;

        }

    }

    if (!filePath.isEmpty()) {

        break;

    }

}

Hello,

I got empty name pairs because I was in the wrong workspace. I found a way to easily get the corresponding workspace to a changeset, and now it builds the filepath for me! I attached my working code, I hope it can help other people with the same problem.

public static String pathFinder(ITeamRepository repo, IWorkspaceManager wm, IChangeSet cs, IVersionableHandle vh)
            throws TeamRepositoryException {
        String filePath = "";
        IWorkspaceConnection wsc = workspaceConnectionFinder(repo, wm, cs);
        IComponentHandle component = cs.getComponent();
        IConfiguration config = wsc.configuration(component);
        List<iversionablehandle> versionableHandleList = new ArrayList<iversionablehandle>();

    versionableHandleList.add(vh); // ok

    List<IAncestorReport> ancestorReports = config.locateAncestors(versionableHandleList,
            new SysoutProgressMonitor());
    IAncestorReport iAncestorReport = ancestorReports.get(0);
    List<INameItemPair> reportList = iAncestorReport.getNameItemPairs();
    for (INameItemPair iNameItemPair : reportList) {
        String temp = iNameItemPair.getName();
        if (temp != null) {
            filePath += "/" + temp;
        }
    }

    return filePath;

}

public static IWorkspaceConnection workspaceConnectionFinder(ITeamRepository repo, IWorkspaceManager wm, IChangeSet cs)

        throws TeamRepositoryException {
    IWorkspaceSearchCriteria wsSearchCriteria = WorkspaceSearchCriteria.FACTORY.newInstance();
    wsSearchCriteria.setKind(IWorkspaceSearchCriteria.ALL);
    List<IWorkspaceHandle> workspaceHandles = wm.findWorkspacesContainingChangeset(cs, wsSearchCriteria,
            Integer.MAX_VALUE, new SysoutProgressMonitor());
    IWorkspaceConnection wsc = wm.getWorkspaceConnection(workspaceHandles.get(0), new SysoutProgressMonitor());
    return wsc;
}

Hi Benjamin,
some time ago I had your same need, so I developed a server-side extension that gets the paths of the files in a change set.
I hope that this code snippet can help you (I tested it on version 5.0.2):

List changes = (List)changeSet.changes();
for (Iterator changesIterator = changes.iterator(); changesIterator.hasNext();) {
    boolean modifiedElement = false;
    boolean addedElement = false;
    boolean deletedElement = false;
    IChange change = (IChange)changesIterator.next();
    IVersionableHandle changeObj = null;
    Integer changeKind = change.kind();

switch (changeKind) {
   case 1: {
       // added
       addedElement = true;
       changeObj = change.afterState();
   };
   break;
   case 2: {
       // modified
       modifiedElement = true;
       changeObj = change.afterState();
   };
   break;
   case 16: {
       // deleted
       deletedElement = true;
       changeObj = change.beforeState();
   };
   default: {
   };
   break;
}
// file path, starting from the component root
String elementPath = "";
ServiceConfigurationProvider configProvider = ServiceConfigurationProvider.FACTORY.create(findStreamFromEnvironment(deliveryTargetName, repositoryProgressMonitorHandle), changeSet.getComponent());
List nameItemPairs = null;
if (modifiedElement) {
    IAncestorReport reports[] = scmService.configurationLocateAncestors(configProvider, new IVersionableHandle[] {changeObj}, null, repositoryProgressMonitorHandle);
    nameItemPairs = reports[0].getNameItemPairs();
}
if (addedElement) {
    IAncestorReport reports[] = scmService.configurationLocateAncestors(configProvider, new IVersionableHandle[] {changeObj}, null, repositoryProgressMonitorHandle);
    nameItemPairs = reports[0].getNameItemPairs();
}
if (deletedElement) {
    IAncestorReport reports[] = scmService.configurationDetermineAncestorsInHistory(configProvider, new IVersionableHandle[] {changeObj}, null, repositoryProgressMonitorHandle);
    nameItemPairs = reports[0].getNameItemPairs();
}

if (nameItemPairs.isEmpty()) {
    IAncestorReport reports[] = scmService.configurationDetermineAncestorsInHistory(configProvider, new IVersionableHandle[] {changeObj}, null, repositoryProgressMonitorHandle);
    nameItemPairs = reports[0].getNameItemPairs();
}
for (Iterator iterator = nameItemPairs.iterator(); iterator.hasNext();) {
    INameItemPair nameItemPair = (INameItemPair)iterator.next();
    String pathPiece = nameItemPair.getName();
    if (pathPiece != null) {
        elementPath = elementPath.concat("/" + pathPiece);
    }
}
if (elementPath.isEmpty()) {
    elementPath = "<file another="" by="" change="" removed="" set="">";
}

}

 As far as I know, the path information RTC stores in SCM is only relative to the component. It is impossible to get an absolute path, unless the file is loaded onto disc somewhere. 

Benjamin,
your solution is actually an improvement of mine.
By setting those search criteria, you avoid cycling on all workspaces, which is a time-consuming task.