tdf#108873 fix merge data handling in fields

This is a regression from tdf#70346 /
  commit 4851cde7b98226b0f82ae2b191c290173e9b06c6

It added the whole DB row as variables to the SwCalc hash set.
This works correct for conditionals when hiding sections, but not
for conditionals used in fields - actually they break.

Previously the field would do a fallback to query the DB again, if
no variable was in the dict and the only possible variables in the
dict could have been user-defined fields.

This handles the added variables correctly for fields.

Also fixes a bug to store the DB number values as number variables
and adds the record number, as SwCalc::VarLook does.

Change-Id: Ib0dbeda68234e671768ede55b2012235a3680276
Reviewed-on: https://gerrit.libreoffice.org/39509
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
(cherry picked from commit f54c6938f73b94fb6f722f3ea68454fee424e62e)
Reviewed-on: https://gerrit.libreoffice.org/39613
(cherry picked from commit 5cde0b62fd074bca132caf6b6010aa002ccf7c87)

3 files changed, 21 insertions, 3 deletions

diff --git a/sw/inc/calc.hxx b/sw/inc/calc.hxx
index 8f54ab3bb385..4bf0ec2580cb 100644
--- a/sw/inc/calc.hxx
+++ b/sw/inc/calc.hxx
@@ -102,10 +102,11 @@ enum SwCalcError
 class SwSbxValue : public SbxValue
 {
     bool bVoid;
+    bool bDBvalue;
 public:
     // always default to a number. otherwise it will become a SbxEMPTY
-    SwSbxValue( long n = 0 ) : bVoid(false)  { PutLong( n ); }
-    SwSbxValue( const double& rD ) : bVoid(false) { PutDouble( rD ); }
+    SwSbxValue( long n = 0 ) : bVoid(false), bDBvalue(false)  { PutLong( n ); }
+    SwSbxValue( const double& rD ) : bVoid(false), bDBvalue(false) { PutDouble( rD ); }
 
     bool GetBool() const;
     double GetDouble() const;
@@ -113,6 +114,9 @@ public:
 
     bool IsVoidValue() {return bVoid;}
     void SetVoidValue(bool bSet) {bVoid = bSet;}
+
+    bool IsDBvalue() {return bDBvalue;}
+    void SetDBvalue(bool bSet) {bDBvalue = bSet;}
 };
 
 // Calculate HashTables for VarTable und Operations
diff --git a/sw/source/core/bastyp/calc.cxx b/sw/source/core/bastyp/calc.cxx
index 3f2d0ba89781..a8090a3423dd 100644
--- a/sw/source/core/bastyp/calc.cxx
+++ b/sw/source/core/bastyp/calc.cxx
@@ -499,6 +499,14 @@ SwCalcExp* SwCalc::VarLook( const OUString& rStr, bool bIns )
                 pFndExp->nValue.PutDouble( pUField->GetValue() );
             }
         }
+        else if ( !pFndExp->pFieldType && pFndExp->nValue.IsDBvalue() )
+        {
+            if ( pFndExp->nValue.IsString() )
+                m_aErrExpr.nValue.PutString( pFndExp->nValue.GetOUString() );
+            else if ( pFndExp->nValue.IsDouble() )
+                m_aErrExpr.nValue.PutDouble( pFndExp->nValue.GetDouble() );
+            pFndExp = &m_aErrExpr;
+        }
         return pFndExp;
     }
 
diff --git a/sw/source/uibase/dbui/dbmgr.cxx b/sw/source/uibase/dbui/dbmgr.cxx
index 9adf98c24340..991b6127c251 100644
--- a/sw/source/uibase/dbui/dbmgr.cxx
+++ b/sw/source/uibase/dbui/dbmgr.cxx
@@ -2164,6 +2164,10 @@ bool SwDBManager::FillCalcWithMergeData( SvNumberFormatter *pDocFormatter,
         const OUString* pColNames = aColNames.getConstArray();
         OUString aString;
 
+        // add the "record number" variable, as SwCalc::VarLook would.
+        rCalc.VarChange( GetAppCharClass().lowercase(
+            SwFieldType::GetTypeStr(TYP_DBSETNUMBERFLD) ), GetSelectedRecordId() );
+
         for( int nCol = 0; nCol < aColNames.getLength(); nCol++ )
         {
             // get the column type
@@ -2189,7 +2193,8 @@ bool SwDBManager::FillCalcWithMergeData( SvNumberFormatter *pDocFormatter,
                 if( bValidValue )
                 {
                     SwSbxValue aValue;
-                    aValue.PutString( aString );
+                    aValue.PutDouble( aNumber );
+                    aValue.SetDBvalue( true );
                     SAL_INFO( "sw.ui", "'" << pColNames[nCol] << "': " << aNumber << " / " << aString );
                     rCalc.VarChange( pColNames[nCol], aValue );
                 }
@@ -2198,6 +2203,7 @@ bool SwDBManager::FillCalcWithMergeData( SvNumberFormatter *pDocFormatter,
             {
                 SwSbxValue aValue;
                 aValue.PutString( aString );
+                aValue.SetDBvalue( true );
                 SAL_INFO( "sw.ui", "'" << pColNames[nCol] << "': " << aString );
                 rCalc.VarChange( pColNames[nCol], aValue );
             }