Fix issue with single realization when using resdata (#12737)

* Moves multi reader initialization
* Log error message if not able to open file
* Make keywordCount pure virtual

The base class `RifSummaryReaderInterface` is changed to be abstract and the `keywordCount` is declared as a pure virtual method, therefore the derived classes must implement the method.

This will ensure that all readers are responsible for reporting a keyword count.

* Ensures addresses are created if required

Calls `createAddressesIfRequired` on the summary reader to ensure addresses are created before accessing keyword count.
This prevents potential issues when the addresses haven't been initialized yet.

ApplicationLibCode/ProjectDataModel/Summary/RimCalculatedSummaryCurveReader.cpp

@@ -114,6 +114,14 @@ RimSummaryCalculation* RifCalculatedSummaryCurveReader::findCalculationByName( c
     return dynamic_cast<RimSummaryCalculation*>( m_calculationCollection->findCalculationById( resultAddress.id() ) );
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+size_t RifCalculatedSummaryCurveReader::keywordCount() const
+{
+    return 0;
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------

ApplicationLibCode/ProjectDataModel/Summary/RimCalculatedSummaryCurveReader.h

@@ -43,6 +43,7 @@ public:
 
 private:
     RimSummaryCalculation* findCalculationByName( const RifEclipseSummaryAddress& resultAddress ) const;
+    size_t                 keywordCount() const override;
 
 private:
     RimSummaryCalculationCollection* m_calculationCollection;

ApplicationLibCode/ProjectDataModel/Summary/RimDeltaSummaryCase.cpp

@@ -368,6 +368,14 @@ QString RimDeltaSummaryCase::caseName() const
     return m_displayName;
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+size_t RimDeltaSummaryCase::keywordCount() const
+{
+    return m_allResultAddresses.size();
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------

ApplicationLibCode/ProjectDataModel/Summary/RimDeltaSummaryCase.h

@@ -88,6 +88,7 @@ public:
 
 protected:
     QString caseName() const override;
+    size_t  keywordCount() const override;
 
 private:
     void fieldChangedByUi( const caf::PdmFieldHandle* changedField, const QVariant& oldValue, const QVariant& newValue ) override;

ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCrossPlotStatisticsCase.cpp

@@ -318,3 +318,18 @@ void RimEnsembleCrossPlotStatisticsCase::clearData()
     m_meanData.clear();
     m_firstSummaryCase = nullptr;
 }
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+size_t RimEnsembleCrossPlotStatisticsCase::keywordCount() const
+{
+    if ( m_firstSummaryCase && m_firstSummaryCase->summaryReader() )
+    {
+        m_firstSummaryCase->summaryReader()->createAddressesIfRequired();
+
+        return m_firstSummaryCase->summaryReader()->keywordCount();
+    }
+
+    return 0;
+}

ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCrossPlotStatisticsCase.h

@@ -55,7 +55,8 @@ public:
     std::string                          unitName( const RifEclipseSummaryAddress& resultAddress ) const override;
 
 private:
-    void clearData();
+    void   clearData();
+    size_t keywordCount() const override;
 
 private:
     std::vector<double> m_p10Data;

ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleStatisticsCase.cpp

@@ -240,6 +240,21 @@ void RimEnsembleStatisticsCase::clearData()
     m_firstSummaryCase = nullptr;
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+size_t RimEnsembleStatisticsCase::keywordCount() const
+{
+    if ( m_firstSummaryCase && m_firstSummaryCase->summaryReader() )
+    {
+        m_firstSummaryCase->summaryReader()->createAddressesIfRequired();
+
+        return m_firstSummaryCase->summaryReader()->keywordCount();
+    }
+
+    return 0;
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------

ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleStatisticsCase.h

@@ -54,7 +54,8 @@ public:
     static RiaDefines::DateTimePeriod findBestResamplingPeriod( time_t minTimeStep, time_t maxTimeStep );
 
 private:
-    void clearData();
+    void   clearData();
+    size_t keywordCount() const override;
 
 private:
     std::vector<time_t> m_timeSteps;

ApplicationLibCode/ProjectDataModel/Summary/RimFileSummaryCase.cpp

@@ -100,7 +100,7 @@ void RimFileSummaryCase::createSummaryReaderInterfaceThreadSafe( RifEnsembleImpo
     //
     // https://github.com/OPM/ResInsight/issues/11342
 
-    m_multiSummaryReader        = std::make_unique<RifMultipleSummaryReaders>();
+    auto multiReader            = std::make_unique<RifMultipleSummaryReaders>();
     m_fileSummaryReaderId       = -1;
     m_additionalSummaryReaderId = -1;
 
@@ -112,6 +112,7 @@ void RimFileSummaryCase::createSummaryReaderInterfaceThreadSafe( RifEnsembleImpo
 
     m_fileSummaryReaderId = reader->serialNumber();
 
+    m_multiSummaryReader = std::move( multiReader );
     m_multiSummaryReader->addReader( std::move( reader ) );
 
     openAndAttachAdditionalReader();

ApplicationLibCode/ProjectDataModel/Summary/Sumo/RimSummaryCaseSumo.cpp

@@ -179,3 +179,11 @@ void RimSummaryCaseSumo::createAndSetAddresses()
         m_allResultAddresses = addresses;
     }
 }
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+size_t RimSummaryCaseSumo::keywordCount() const
+{
+    return m_allResultAddresses.size();
+}

ApplicationLibCode/ProjectDataModel/Summary/Sumo/RimSummaryCaseSumo.h

@@ -57,6 +57,7 @@ public:
 protected:
     QString caseName() const override;
     void    createAndSetAddresses() override;
+    size_t  keywordCount() const override;
 
 private:
     caf::PdmPointer<RimSummaryEnsembleSumo>                m_ensemble;