I am working on ArcObjects code snippet to export the delta
changes in two versions in one ArcSDE environment and then importing the output
file as delta changes in another environment. I am using a modified version of
code from ESRI documentation link ‘http://resources.arcgis.com/en/help/arcobjects-net/conceptualhelp/index.html#//00010000019v000000’.
Below is the code snippet that I am calling in my application. It is executing
fine without any error but I am unable to see the imported changes.
Can you kindly provide an insight on where I might be
deviating from the ESRI documentation or if the code is not going through as
per design and expected output? I am using ArcObjects/ArcGIS Desktop 10.2.1 and
the code is based on c# on Windows 7 OS.
public void exportDeltaChanges(IWorkspace sourceWorkspace, IWorkspace targetWorkspace, string outputXMLFilePathName, IWorkspace newWorkspace)
{
try
{
// Create the source dataset object.
IDataset sourceDS = (IDataset)sourceWorkspace;
IWorkspaceName sourceWorkspaceName = (IWorkspaceName)sourceDS.FullName;
//Create a name object for the target workspace.
IDataset dataset = (IDataset)targetWorkspace;
IWorkspaceName targetWorkspaceName = (IWorkspaceName)dataset.FullName;
IDataset newDS = (IDataset)newWorkspace;
IWorkspaceName newWorkspaceName = (IWorkspaceName)newDS.FullName;
VersionDataChanges vdc = new VersionDataChangesClass();
IVersionDataChangesInit versionDataChangesInit = (IVersionDataChangesInit)vdc;
versionDataChangesInit.Init(sourceWorkspaceName, targetWorkspaceName);
IDataChanges dataChanges = (IDataChanges)vdc;
//Listing modified feature classes and tables in a version
IEnumModifiedClassInfo enumModifiedFCsInfo = dataChanges.GetModifiedClassesInfo();
string modifiedFC = "";
int modifiedFCCounter = 0;
updateStatus("\n\n Listing Feature Modified Classes \n", messageImportance.Information);
var modifedClassInfo = enumModifiedFCsInfo.Next();
while (modifedClassInfo != null)
{
modifiedFCCounter += 1;
modifiedFC = modifedClassInfo.ChildClassName;
//Status message. Can be replaced with MessageBox.show("") method
updateStatus("\n\t\t " + modifiedFCCounter.ToString() + ": " + modifiedFC, messageImportance.Information);
modifedClassInfo = enumModifiedFCsInfo.Next();
}
if (modifiedFCCounter == 0)
{
updateStatus("No changes found in this version", messageImportance.Warning);
return;
}
String tempDirectory = "D:\\temp";
String deltaFile = Path.Combine(tempDirectory, outputXMLFilePathName);
//Check if file exists and clean
if(!File.Exists(deltaFile))
{
updateStatus("\nOutput path: " + deltaFile + "\n", messageImportance.Information);
IExportDataChanges dataChangesExporter = new DataChangesExporterClass();
dataChangesExporter.ExportDataChanges(deltaFile, esriExportDataChangesOption.esriExportToXML, dataChanges, true);
//Status message. Can be replaced with MessageBox.show("") method
updateStatus("\n\tVersion delta exported successfully", messageImportance.Important);
}
else
{
bool isFileDeleted = File.Delete(deltaFile);
if (isFileDeleted)
{
updateStatus("\nOutput path: " + deltaFile + "\n", messageImportance.Information);
IExportDataChanges dataChangesExporter = new DataChangesExporterClass();
dataChangesExporter.ExportDataChanges(deltaFile, esriExportDataChangesOption.esriExportToXML, dataChanges, true);
//Status message. Can be replaced with MessageBox.show("") method
updateStatus("\n\tVersion delta exported successfully", messageImportance.Important);
}
else
{
//Status message. Can be replaced with MessageBox.show("") method
updateStatus("Output file path name: " + deltaFile + " already exists, please delete or change output filename to proceed", messageImportance.Error);
return;
}
}
// Update user about importing the updategram into the target workspace.
//Status message. Can be replaced with MessageBox.show("") method
updateStatus("\nImporting data into new environment: '"+ newWorkspaceName.PathName + "'",
messageImportance.Important);
// Import the updategram into the target workspace.
IDeltaDataChanges deltaDataChanges = new DeltaDataChangesClass();
IDeltaDataChangesInit2 deltaDataChangesInit2 = (IDeltaDataChangesInit2) deltaDataChanges;
deltaDataChangesInit2.Init2(deltaFile, esriExportDataChangesOption.esriExportToXML, false);
IImportDataChanges importDataChanges = new DataChangesImporterClass();
importDataChanges.ImportDataChanges(newWorkspaceName, deltaDataChanges, false, true);
// Update user about operation successful completion.
//Status message. Can be replaced with MessageBox.show("") method
updateStatus("\nData import successful into the new environment:'" + newWorkspaceName.PathName + "'", messageImportance.Important);
}
catch(COMException comExc)
{
reportComException(comExc);
}
catch (Exception exc)
{
reportException(exc);
}
}
