[Paraview-developers] bug in pqPipelineFilter

[Utkarsh Ayachit]

There's was never meant to be any order matching between the VTK port
numbers and input ports provided by pqPipelineFilter. The latter indeed
used a map internally using the property  name as the key for the map
(hence the change in order).

If there's a convincing reason to preserve it, we can surely fix it,
however.

Utkarsh

On Wed, Aug 2, 2017 at 4:08 PM, Maxim Torgonskiy <kriolog at gmail.com> wrote:

> Hello,
>
> It seems that there's a bug in pqPipelineFilter::getInputPortName(int). I
> have a vtk filter which has 3 inputs and when I try to access the inputs
> with pqPipelineFilter the function getInputPortName doesn't respect their
> order:
>
> .xml :
> <?xml version="1.0"?>
> <ServerManagerConfiguration>
>   <ProxyGroup name="filters">
>     <SourceProxy class="Dummy" name="Dummy">
>       <InputProperty
>         name="Zero"
>         port_index="0"
>         command="SetInputConnection">
>         <ProxyGroupDomain name="groups">
>           <Group name="sources"/>
>           <Group name="filters"/>
>         </ProxyGroupDomain>
>         <DataTypeDomain name="input_type">
>           <DataType value="vtkPolyData"/>
>         </DataTypeDomain>
>       </InputProperty>
>       <InputProperty
>         name="One"
>         port_index="1"
>         optional="1"
>         command="SetInputConnection">
>         <ProxyGroupDomain name="groups">
>           <Group name="sources"/>
>           <Group name="filters"/>
>         </ProxyGroupDomain>
>         <DataTypeDomain name="input_type">
>           <DataType value="vtkPointSet"/>
>         </DataTypeDomain>
>       </InputProperty>
>       <InputProperty
>         name="Two"
>         port_index="2"
>         optional="1"
>         command="SetInputConnection">
>         <ProxyGroupDomain name="groups">
>           <Group name="sources"/>
>           <Group name="filters"/>
>         </ProxyGroupDomain>
>         <DataTypeDomain name="input_type">
>           <DataType value="vtkPolyData"/>
>         </DataTypeDomain>
>       </InputProperty>
>     </SourceProxy>
>   </ProxyGroup>
> </ServerManagerConfiguration>
>
> .cxx :
> int Dummy::RequestData(
>   vtkInformation *vtkNotUsed(info),
>   vtkInformationVector **inputVector,
>   vtkInformationVector *outputVector)
> {
>   pqPipelineFilter* self_pqfilter = qobject_cast<pqPipelineFilter*
> >(pqActiveObjects::instance().activeSource());
>   Q_ASSERT(self_pqfilter);
>
>   for(int i = 0; i < GetNumberOfInputPorts(); ++i)
>     qDebug() << self_pqfilter->getInputPortName(i);
>
>   return 1;
> }
>
> output :
> "One"
> "Two"
> "Zero"
>
>
> A minimal reproducible example is attached.
>
> Regards,
> Maxim
>
>
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