Commit bb020c84 authored by Berk Geveci's avatar Berk Geveci
Browse files

ENH: Copy pipeline information only if it does not exist

parent d9d0ac2a
......@@ -33,7 +33,7 @@ PURPOSE. See the above copyright notice for more information.
#include "vtkInformationVector.h"
#include "vtkDataSetAttributes.h"
vtkCxxRevisionMacro(vtkDataObject, "1.18");
vtkCxxRevisionMacro(vtkDataObject, "1.19");
......@@ -808,8 +808,23 @@ void vtkDataObject::InternalDataObjectCopy(vtkDataObject *src)
// copy the pipeline info if it is available
thisPInfo->CopyEntry(thatPInfo, SDDP::WHOLE_EXTENT());
thisPInfo->CopyEntry(thatPInfo, SDDP::MAXIMUM_NUMBER_OF_PIECES());
// Do not override info if it exists. Normally WHOLE_EXTENT
// and MAXIMUM_NUMBER_OF_PIECES should not be copied here since
// they belong to the pipeline not the data object.
// However, removing the copy can break things in older filters
// that rely on ShallowCopy to set these (mostly, sources/filters
// that use another source/filter internally and shallow copy
// in RequestInformation). As a compromise, I changed the following
// code such that these entries are only copied if they do not
// exist in the output.
if (!thisPInfo->Has(SDDP::WHOLE_EXTENT()))
thisPInfo->CopyEntry(thatPInfo, SDDP::WHOLE_EXTENT());
thisPInfo->CopyEntry(thatPInfo, SDDP::MAXIMUM_NUMBER_OF_PIECES());
thisPInfo->CopyEntry(thatPInfo, vtkDemandDrivenPipeline::RELEASE_DATA());
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