#2070 AppFwk : Disable default IO for proxy fields

Proxy fields usually reads and transforms data from other sources, usually other Pdm fields. This commit disables IO for proxy fields in the constructor. If XML serialization is required, this must be set on the proxy field, like this

field.xmlCapability()->setIOWritable(true)
field.xmlCapability()->setIOReadable(true)

ApplicationLibCode/ProjectDataModel/Annotations/RimTextAnnotation.cpp

@@ -72,7 +72,6 @@ RimTextAnnotation::RimTextAnnotation()
     CAF_PDM_InitFieldNoDefault( &m_nameProxy, "NameProxy", "Name Proxy" );
     m_nameProxy.registerGetMethod( this, &RimTextAnnotation::extractNameFromText );
     m_nameProxy.uiCapability()->setUiReadOnly( true );
-    m_nameProxy.xmlCapability()->disableIO();
 
     m_anchorPointPickEventHandler = std::make_shared<RicVec3dPickEventHandler>( &m_anchorPointXyd );
     m_labelPointPickEventHandler  = std::make_shared<RicVec3dPickEventHandler>( &m_labelPointXyd, 0.1 );

ApplicationLibCode/ProjectDataModel/CellFilters/RimCellFilter.cpp

@@ -71,7 +71,6 @@ RimCellFilter::RimCellFilter( FilterDefinitionType defType )
     m_nameProxy.registerGetMethod( this, &RimCellFilter::fullName );
     m_nameProxy.uiCapability()->setUiReadOnly( true );
     m_nameProxy.uiCapability()->setUiHidden( true );
-    m_nameProxy.xmlCapability()->disableIO();
 }
 
 //--------------------------------------------------------------------------------------------------

ApplicationLibCode/ProjectDataModel/CellFilters/RimEclipsePropertyFilter.cpp

@@ -88,13 +88,11 @@ RimEclipsePropertyFilter::RimEclipsePropertyFilter()
     m_integerLowerBound.uiCapability()->setUiEditorTypeName( caf::PdmUiSliderEditor::uiEditorTypeName() );
     m_integerLowerBound.registerGetMethod( this, &RimEclipsePropertyFilter::lowerBound );
     m_integerLowerBound.registerSetMethod( this, &RimEclipsePropertyFilter::setLowerBound );
-    m_integerLowerBound.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_integerUpperBound, "IntegerUpperBound", "Max" );
     m_integerUpperBound.uiCapability()->setUiEditorTypeName( caf::PdmUiSliderEditor::uiEditorTypeName() );
     m_integerUpperBound.registerGetMethod( this, &RimEclipsePropertyFilter::upperBound );
     m_integerUpperBound.registerSetMethod( this, &RimEclipsePropertyFilter::setUpperBound );
-    m_integerUpperBound.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_useCategorySelection, "CategorySelection", false, "Category Selection" );
     m_upperBound.uiCapability()->setUiEditorTypeName( caf::PdmUiDoubleSliderEditor::uiEditorTypeName() );

ApplicationLibCode/ProjectDataModel/Completions/RimFracture.cpp

@@ -122,7 +122,6 @@ RimFracture::RimFracture()
     CAF_PDM_InitFieldNoDefault( &m_uiAnchorPosition, "ui_positionAtWellpath", "Fracture Position" );
     m_uiAnchorPosition.registerGetMethod( this, &RimFracture::fracturePositionForUi );
     m_uiAnchorPosition.uiCapability()->setUiReadOnly( true );
-    m_uiAnchorPosition.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_azimuth, "Azimuth", 0.0, "Azimuth" );
     m_azimuth.uiCapability()->setUiEditorTypeName( caf::PdmUiDoubleSliderEditor::uiEditorTypeName() );
@@ -146,12 +145,10 @@ RimFracture::RimFracture()
     CAF_PDM_InitFieldNoDefault( &m_uiWellPathAzimuth, "WellPathAzimuth", "Well Path Azimuth" );
     m_uiWellPathAzimuth.registerGetMethod( this, &RimFracture::wellAzimuthAtFracturePositionText );
     m_uiWellPathAzimuth.uiCapability()->setUiReadOnly( true );
-    m_uiWellPathAzimuth.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_uiWellFractureAzimuthDiff, "WellFractureAzimuthDiff", "Azimuth Difference Between\nFracture and Well" );
     m_uiWellFractureAzimuthDiff.registerGetMethod( this, &RimFracture::wellFractureAzimuthDiffText );
     m_uiWellFractureAzimuthDiff.uiCapability()->setUiReadOnly( true );
-    m_uiWellFractureAzimuthDiff.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_wellFractureAzimuthAngleWarning,
                        "WellFractureAzimithAngleWarning",

ApplicationLibCode/ProjectDataModel/Completions/RimFractureTemplate.cpp

@@ -119,7 +119,6 @@ RimFractureTemplate::RimFractureTemplate()
     CAF_PDM_InitFieldNoDefault( &m_nameAndUnit, "NameAndUnit", "NameAndUnit" );
     m_nameAndUnit.registerGetMethod( this, &RimFractureTemplate::nameAndUnit );
     m_nameAndUnit.uiCapability()->setUiHidden( true );
-    m_nameAndUnit.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_fractureTemplateUnit,
                        "UnitSystem",
@@ -192,14 +191,12 @@ RimFractureTemplate::RimFractureTemplate()
     m_dFactorDisplayField.registerGetMethod( this, &RimFractureTemplate::dFactorForTemplate );
     m_dFactorDisplayField.uiCapability()->setUiEditorTypeName( caf::PdmUiDoubleValueEditor::uiEditorTypeName() );
     m_dFactorDisplayField.uiCapability()->setUiReadOnly( true );
-    m_dFactorDisplayField.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_dFactorSummaryText, "dFactorSummaryText", "D Factor Summary" );
     m_dFactorSummaryText.registerGetMethod( this, &RimFractureTemplate::dFactorSummary );
     m_dFactorSummaryText.uiCapability()->setUiReadOnly( true );
     m_dFactorSummaryText.uiCapability()->setUiEditorTypeName( caf::PdmUiTextEditor::uiEditorTypeName() );
     m_dFactorSummaryText.uiCapability()->setUiLabelPosition( caf::PdmUiItemInfo::LabelPosition::TOP );
-    m_dFactorSummaryText.xmlCapability()->disableIO();
 
     CAF_PDM_InitScriptableField( &m_heightScaleFactor, "HeightScaleFactor", 1.0, "Height" );
     CAF_PDM_InitScriptableField( &m_halfLengthScaleFactor, "WidthScaleFactor", 1.0, "Half Length" );

ApplicationLibCode/ProjectDataModel/EnsembleFileSet/RimEnsembleFileSet.cpp

@@ -66,7 +66,6 @@ RimEnsembleFileSet::RimEnsembleFileSet()
     CAF_PDM_InitFieldNoDefault( &m_ensembleInfo, "EnsembleInfo", "Info" );
     m_ensembleInfo.registerGetMethod( this, &RimEnsembleFileSet::ensembleInfo );
     m_ensembleInfo.uiCapability()->setUiReadOnly( true );
-    m_ensembleInfo.xmlCapability()->disableIO();
     m_ensembleInfo.uiCapability()->setUiEditorTypeName( caf::PdmUiTextEditor::uiEditorTypeName() );
 
     CAF_PDM_InitFieldNoDefault( &m_groupingMode, "GroupingMode", "Grouping Mode" );

ApplicationLibCode/ProjectDataModel/Flow/RimWellRftEnsembleCurveSet.cpp

@@ -47,7 +47,6 @@ RimWellRftEnsembleCurveSet::RimWellRftEnsembleCurveSet()
     CAF_PDM_InitFieldNoDefault( &m_ensembleName, "NameAndUnit", "NameAndUnit" );
     m_ensembleName.registerGetMethod( this, &RimWellRftEnsembleCurveSet::ensembleName );
     m_ensembleName.uiCapability()->setUiHidden( true );
-    m_ensembleName.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_eclipseCase, "EclipseResultCase", "Eclipse Result Case" );
     m_eclipseCase.uiCapability()->setUiHidden( true );

ApplicationLibCode/ProjectDataModel/Parameters/RimParameterGroup.cpp

@@ -68,7 +68,6 @@ RimParameterGroup::RimParameterGroup()
     m_labelProxy.registerGetMethod( this, &RimParameterGroup::labelOrName );
     m_labelProxy.uiCapability()->setUiReadOnly( true );
     m_labelProxy.uiCapability()->setUiHidden( true );
-    m_labelProxy.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_lists, "ParameterLists", "Parameter Lists" );
     m_lists.uiCapability()->setUiHidden( true );

ApplicationLibCode/ProjectDataModel/QuickAccess/RimFieldQuickAccess.cpp

@@ -40,11 +40,9 @@ RimFieldQuickAccess::RimFieldQuickAccess()
 
     CAF_PDM_InitFieldNoDefault( &m_selectObjectButton, "SelectObject", "...", ":/Select.svg", "Select Object in Property Editor" );
     m_selectObjectButton.uiCapability()->setUiEditorTypeName( caf::PdmUiToolButtonCallbackEditor::uiEditorTypeName() );
-    m_selectObjectButton.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_removeItemButton, "RemoveItem", "...", ":/pinned-remove.svg", "Remove Quick Access" );
     m_removeItemButton.uiCapability()->setUiEditorTypeName( caf::PdmUiToolButtonCallbackEditor::uiEditorTypeName() );
-    m_removeItemButton.xmlCapability()->disableIO();
 
     m_markedForRemoval = false;
 }

ApplicationLibCode/ProjectDataModel/Rim2dIntersectionView.cpp

@@ -86,7 +86,6 @@ Rim2dIntersectionView::Rim2dIntersectionView()
     CAF_PDM_InitField( &m_showAxisLines, "ShowAxisLines", false, "Show Axis Lines" );
 
     CAF_PDM_InitFieldNoDefault( &m_nameProxy, "NameProxy", "Name" );
-    m_nameProxy.xmlCapability()->disableIO();
     m_nameProxy.registerGetMethod( this, &Rim2dIntersectionView::getName );
     m_nameProxy.registerSetMethod( this, &Rim2dIntersectionView::setName );
 

ApplicationLibCode/ProjectDataModel/RimColorLegendItem.cpp

@@ -46,7 +46,6 @@ RimColorLegendItem::RimColorLegendItem()
     CAF_PDM_InitFieldNoDefault( &m_nameProxy, "NameProxy", "Name Proxy" );
     m_nameProxy.registerGetMethod( this, &RimColorLegendItem::itemName );
     m_nameProxy.uiCapability()->setUiHidden( true );
-    m_nameProxy.xmlCapability()->disableIO();
 
     setDeletable( true );
 }

ApplicationLibCode/ProjectDataModel/RimEclipseView.cpp

@@ -209,7 +209,6 @@ RimEclipseView::RimEclipseView()
     CAF_PDM_InitField( &m_showInvalidCells, "ShowInvalidCells", false, "Show Invalid Cells" );
 
     CAF_PDM_InitScriptableFieldNoDefault( &m_cellResultData, "CellResultData", "", "", "", "Current Eclipse Cell Result" );
-    m_cellResultData.xmlCapability()->disableIO();
     m_cellResultData.registerGetMethod( this, &RimEclipseView::currentCellResultData );
     m_cellResultData.registerSetMethod( this, &RimEclipseView::setCurrentCellResultData );
 

ApplicationLibCode/ProjectDataModel/RimGridCalculation.cpp

@@ -111,7 +111,6 @@ RimGridCalculation::RimGridCalculation()
     CAF_PDM_InitFieldNoDefault( &m_nonVisibleResultText, "NonVisibleResultText", "" );
     m_nonVisibleResultText.registerGetMethod( this, &RimGridCalculation::nonVisibleResultAddressText );
     m_nonVisibleResultText.uiCapability()->setUiReadOnly( true );
-    m_nonVisibleResultText.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_selectedTimeSteps, "SelectedTimeSteps", "Time Step Selection" );
     m_selectedTimeSteps.uiCapability()->setUiEditorTypeName( caf::PdmUiTreeSelectionEditor::uiEditorTypeName() );

ApplicationLibCode/ProjectDataModel/RimNameConfig.cpp

@@ -38,7 +38,6 @@ RimNameConfig::RimNameConfig( const QString& customName )
     CAF_PDM_InitFieldNoDefault( &m_customName, "CustomCurveName", "Custom Name Part" );
     CAF_PDM_InitFieldNoDefault( &m_autoName, "AutoCurveName", "Full Name" );
     m_autoName.registerGetMethod( this, &RimNameConfig::autoName );
-    m_autoName.xmlCapability()->disableIO();
     m_autoName.uiCapability()->setUiReadOnly( true );
 
     m_customName = customName;

ApplicationLibCode/ProjectDataModel/RimObservedFmuRftData.cpp

@@ -39,7 +39,6 @@ RimObservedFmuRftData::RimObservedFmuRftData()
     m_directoryPath_OBSOLETE.xmlCapability()->setIOWritable( false );
 
     CAF_PDM_InitFieldNoDefault( &m_wells, "Wells", "Wells" );
-    m_wells.xmlCapability()->disableIO();
     m_wells.uiCapability()->setUiReadOnly( true );
     m_wells.registerGetMethod( this, &RimObservedFmuRftData::wells );
 }

ApplicationLibCode/ProjectDataModel/RimPressureDepthData.cpp

@@ -35,7 +35,6 @@ RimPressureDepthData::RimPressureDepthData()
     m_filePath.uiCapability()->setUiReadOnly( true );
 
     CAF_PDM_InitFieldNoDefault( &m_wells, "Wells", "Wells" );
-    m_wells.xmlCapability()->disableIO();
     m_wells.uiCapability()->setUiReadOnly( true );
     m_wells.registerGetMethod( this, &RimPressureDepthData::wellNames );
 

ApplicationLibCode/ProjectDataModel/RimUserDefinedCalculationVariable.cpp

@@ -32,7 +32,6 @@ RimUserDefinedCalculationVariable::RimUserDefinedCalculationVariable()
 
     CAF_PDM_InitFieldNoDefault( &m_addressUi, "AddressUi", "Address" );
     m_addressUi.registerGetMethod( this, &RimUserDefinedCalculationVariable::displayString );
-    m_addressUi.xmlCapability()->disableIO();
     m_addressUi.uiCapability()->setUiReadOnly( true );
 }
 

ApplicationLibCode/ProjectDataModel/Seismic/RimSeismicDifferenceData.cpp

@@ -72,7 +72,6 @@ RimSeismicDifferenceData::RimSeismicDifferenceData()
     m_nameProxy.registerGetMethod( this, &RimSeismicDifferenceData::fullName );
     m_nameProxy.uiCapability()->setUiReadOnly( true );
     m_nameProxy.uiCapability()->setUiHidden( true );
-    m_nameProxy.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_seismicData1, "SeismicData1", "Seismic Data 1" );
     CAF_PDM_InitFieldNoDefault( &m_seismicData2, "SeismicData2", "Seismic Data 2" );

ApplicationLibCode/ProjectDataModel/Seismic/RimSeismicSection.cpp

@@ -77,7 +77,6 @@ RimSeismicSection::RimSeismicSection()
     m_nameProxy.registerGetMethod( this, &RimSeismicSection::fullName );
     m_nameProxy.uiCapability()->setUiReadOnly( true );
     m_nameProxy.uiCapability()->setUiHidden( true );
-    m_nameProxy.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_type, "Type", "Type" );
 

ApplicationLibCode/ProjectDataModel/StimPlanModel/RimStimPlanModel.cpp

@@ -183,7 +183,6 @@ RimStimPlanModel::RimStimPlanModel()
     CAF_PDM_InitFieldNoDefault( &m_anchorPositionForUi, "AnchorPositionForUi", "Anchor Position" );
     m_anchorPositionForUi.registerGetMethod( this, &RimStimPlanModel::anchorPositionForUi );
     m_anchorPositionForUi.uiCapability()->setUiReadOnly( true );
-    m_anchorPositionForUi.xmlCapability()->disableIO();
 
     CAF_PDM_InitScriptableFieldNoDefault( &m_thicknessDirection, "ThicknessDirection", "Thickness Direction" );
     m_thicknessDirection.uiCapability()->setUiReadOnly( true );

ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCurveSet.cpp

@@ -247,7 +247,6 @@ RimEnsembleCurveSet::RimEnsembleCurveSet()
     CAF_PDM_InitFieldNoDefault( &m_autoGeneratedName, "AutoGeneratedName", "Curve Set Name" );
     m_autoGeneratedName.registerGetMethod( this, &RimEnsembleCurveSet::createAutoName );
     m_autoGeneratedName.uiCapability()->setUiReadOnly( true );
-    m_autoGeneratedName.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_isUsingAutoName, "AutoName", true, "Auto Name" );
     CAF_PDM_InitFieldNoDefault( &m_summaryAddressNameTools, "SummaryAddressNameTools", "SummaryAddressNameTools" );

ApplicationLibCode/ProjectDataModel/Summary/RimSummaryEnsemble.cpp

@@ -107,7 +107,6 @@ RimSummaryEnsemble::RimSummaryEnsemble()
     m_ensembleDescription.registerGetMethod( this, &RimSummaryEnsemble::ensembleDescription );
     m_ensembleDescription.uiCapability()->setUiLabelPosition( caf::PdmUiItemInfo::LabelPosition::TOP );
     m_ensembleDescription.uiCapability()->setUiEditorTypeName( caf::PdmUiTextEditor::uiEditorTypeName() );
-    m_ensembleDescription.xmlCapability()->disableIO();
 }
 
 //--------------------------------------------------------------------------------------------------

ApplicationLibCode/ProjectDataModel/Surfaces/RimSurface.cpp

@@ -72,7 +72,6 @@ RimSurface::RimSurface()
     m_nameProxy.registerGetMethod( this, &RimSurface::fullName );
     m_nameProxy.uiCapability()->setUiReadOnly( true );
     m_nameProxy.uiCapability()->setUiHidden( true );
-    m_nameProxy.xmlCapability()->disableIO();
 
     setDeletable( true );
 }

ApplicationLibCode/ProjectDataModel/Surfaces/RimSurfaceInViewCollection.cpp

@@ -47,7 +47,6 @@ RimSurfaceInViewCollection::RimSurfaceInViewCollection()
     CAF_PDM_InitFieldNoDefault( &m_collectionName, "CollectionName", "Name" );
     m_collectionName.registerGetMethod( this, &RimSurfaceInViewCollection::name );
     m_collectionName.uiCapability()->setUiReadOnly( true );
-    m_collectionName.xmlCapability()->disableIO();
 
     CAF_PDM_InitFieldNoDefault( &m_collectionsInView, "SurfacesInViewFieldCollections", "SurfacesInViewFieldCollections" );
 

ApplicationLibCode/ProjectDataModel/WellLog/RimEnsembleWellLogCurveSet.cpp

@@ -125,7 +125,6 @@ RimEnsembleWellLogCurveSet::RimEnsembleWellLogCurveSet()
     CAF_PDM_InitFieldNoDefault( &m_autoGeneratedName, "AutoGeneratedName", "Curve Set Name" );
     m_autoGeneratedName.registerGetMethod( this, &RimEnsembleWellLogCurveSet::createAutoName );
     m_autoGeneratedName.uiCapability()->setUiReadOnly( true );
-    m_autoGeneratedName.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_isUsingAutoName, "AutoName", true, "Auto Name" );
 

ApplicationLibCode/ProjectDataModel/WellPath/RimWellIASettings.cpp

@@ -86,7 +86,6 @@ RimWellIASettings::RimWellIASettings()
     m_nameProxy.registerGetMethod( this, &RimWellIASettings::fullName );
     m_nameProxy.uiCapability()->setUiReadOnly( true );
     m_nameProxy.uiCapability()->setUiHidden( true );
-    m_nameProxy.xmlCapability()->disableIO();
 
     CAF_PDM_InitField( &m_showBox, "showBox", false, "Show model box" );
 

Fwk/AppFwk/cafProjectDataModel/cafPdmXml/cafInternalPdmXmlFieldCapability.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "cafInternalPdmXmlFieldReaderWriter.h"
+#include "cafPdmProxyValueField.h"
 #include "cafPdmXmlFieldHandle.h"
 
 #include <typeinfo>
@@ -195,6 +196,41 @@ private:
     FieldType* m_field;
 };
 
+template <typename DataType>
+class PdmFieldXmlCap<PdmProxyValueField<DataType>> : public PdmXmlFieldHandle
+{
+    typedef PdmProxyValueField<DataType> FieldType;
+
+public:
+    PdmFieldXmlCap( FieldType* field, bool giveOwnership )
+        : PdmXmlFieldHandle( field, giveOwnership )
+    {
+        m_field        = field;
+        m_dataTypeName = QString( "%1" ).arg( typeid( DataType ).name() );
+
+        // Proxy fields should not be serialized by default
+        // If needed, this can be overridden by the user by enabling IO on the field:
+        //
+        //   m_proxyDoubleField.xmlCapability()->setIOWritable( true );
+        //   m_proxyDoubleField.xmlCapability()->setIOReadable( true );
+
+        disableIO();
+    }
+
+    // Xml Serializing
+public:
+    std::vector<QString> readFieldData( QXmlStreamReader&                       xmlStream,
+                                        PdmObjectFactory*                       objectFactory,
+                                        const std::vector<caf::PdmDeprecation>& deprecations = {} ) override;
+    void                 writeFieldData( QXmlStreamWriter& xmlStream ) const override;
+    bool                 resolveReferences() override;
+
+    bool isVectorField() const override;
+
+private:
+    FieldType* m_field;
+};
+
 template <typename FieldType>
 void addXmlCapabilityToField( FieldType* field )
 {

Fwk/AppFwk/cafProjectDataModel/cafPdmXml/cafInternalPdmXmlFieldCapability.inl

@@ -533,4 +533,53 @@ bool caf::PdmFieldXmlCap<caf::PdmField<std::vector<DataType>>>::resolveReference
     return true;
 }
 
+//==================================================================================================
+/// XML Implementation for PdmFieldXmlCap<PdmProxyValueField<>> methods
+///
+//==================================================================================================
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+template <typename DataType>
+bool caf::PdmFieldXmlCap<caf::PdmProxyValueField<DataType>>::isVectorField() const
+{
+    return m_field->isStreamingField();
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+template <typename DataType>
+std::vector<QString>
+    caf::PdmFieldXmlCap<caf::PdmProxyValueField<DataType>>::readFieldData( QXmlStreamReader& xmlStream,
+                                                                           PdmObjectFactory*,
+                                                                           const std::vector<caf::PdmDeprecation>& )
+{
+    this->assertValid();
+    DataType value;
+    PdmFieldReader<DataType>::readFieldData( value, xmlStream, m_field );
+    m_field->setValue( value );
+    return {};
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+template <typename DataType>
+void caf::PdmFieldXmlCap<caf::PdmProxyValueField<DataType>>::writeFieldData( QXmlStreamWriter& xmlStream ) const
+{
+    this->assertValid();
+    PdmFieldWriter<DataType>::writeFieldData( m_field->value(), xmlStream );
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+template <typename DataType>
+bool caf::PdmFieldXmlCap<caf::PdmProxyValueField<DataType>>::resolveReferences()
+{
+    return true;
+}
+
 } // End namespace caf

Fwk/AppFwk/cafProjectDataModel/cafPdmXml/cafPdmXml_UnitTests/cafPdmXmlBasicTest.cpp

@@ -37,6 +37,8 @@ public:
         CAF_PDM_XML_InitField( &m_proxyDoubleField, "BigNumber" );
         m_proxyDoubleField.registerSetMethod( this, &DemoPdmObject::setDoubleMember );
         m_proxyDoubleField.registerGetMethod( this, &DemoPdmObject::doubleMember );
+        m_proxyDoubleField.xmlCapability()->setIOWritable( true );
+        m_proxyDoubleField.xmlCapability()->setIOReadable( true );
 
         CAF_PDM_XML_InitField( &m_proxyEnumField, "AppEnum" );
         m_proxyEnumField.registerSetMethod( this, &DemoPdmObject::setEnumMember );
@@ -587,3 +589,20 @@ TEST( BaseTest, XmlImportClamping )
         EXPECT_DOUBLE_EQ( -123.456, obj->m_unclampedField() );
     }
 }
+
+//--------------------------------------------------------------------------------------------------
+/// Test that proxy fields have IO disabled by default
+//--------------------------------------------------------------------------------------------------
+TEST( BaseTest, ProxyFieldIODisabled )
+{
+    // Test with SimpleObj which has default proxy field IO behavior (disabled)
+    auto simpleObj = std::make_unique<SimpleObj>();
+    EXPECT_FALSE( simpleObj->m_proxyDouble.xmlCapability()->isIOReadable() );
+    EXPECT_FALSE( simpleObj->m_proxyDouble.xmlCapability()->isIOWritable() );
+
+    // Regular fields should still have IO enabled
+    EXPECT_TRUE( simpleObj->m_position.xmlCapability()->isIOReadable() );
+    EXPECT_TRUE( simpleObj->m_position.xmlCapability()->isIOWritable() );
+
+    // Note: DemoPdmObject explicitly enables IO for its proxy field for the ChildArrayFieldSerializing test
+}

Fwk/AppFwk/cafProjectDataModel/cafProjectDataModel_UnitTests/cafPdmBasicTest.cpp

@@ -75,6 +75,9 @@ public:
         addUiCapabilityToField( &m_proxyDouble );
         addXmlCapabilityToField( &m_proxyDouble );
         CAF_PDM_InitFieldNoDefault( &m_proxyDouble, "ProxyDouble", "ProxyDouble" );
+        m_proxyDouble.xmlCapability()->setIOWritable( true );
+        m_proxyDouble.xmlCapability()->setIOReadable( true );
+        m_proxyDouble.xmlCapability()->setCopyable( true );
 #endif
     }