[oracle] Fix some clazy warnings

src/providers/oracle/qgsoracleprovider.cpp

@@ -1187,7 +1187,7 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
 
   bool returnvalue = true;
 
-  if ( !( flags & QgsFeatureSink::FastInsert ) && !getWorkspace().isEmpty() && getWorkspace().toUpper() != "LIVE" )
+  if ( !( flags & QgsFeatureSink::FastInsert ) && !getWorkspace().isEmpty() && getWorkspace().compare( QStringLiteral( "LIVE" ), Qt::CaseInsensitive ) != 0 )
   {
     static bool warn = true;
     if ( warn )
@@ -1210,37 +1210,37 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
     }
 
     // Prepare the INSERT statement
-    QString insert = QString( "INSERT INTO %1(" ).arg( mQuery );
-    QString values = ") VALUES (";
-    QString delim = "";
+    QString insert = QStringLiteral( "INSERT INTO %1(" ).arg( mQuery );
+    QString values = QStringLiteral( ") VALUES (" );
+    QString delim;
 
     QStringList defaultValues;
     QList<int> fieldId;
 
     if ( !mGeometryColumn.isNull() )
     {
       insert += quotedIdentifier( mGeometryColumn );
-      values += "?";
-      delim = ",";
+      values += '?';
+      delim = ',';
     }
 
     if ( mPrimaryKeyType == PktInt || mPrimaryKeyType == PktFidMap )
     {
-      QString keys, kdelim = "";
+      QString keys, kdelim;
 
       Q_FOREACH ( int idx, mPrimaryKeyAttrs )
       {
         QgsField fld = field( idx );
         insert += delim + quotedIdentifier( fld.name() );
         keys += kdelim + quotedIdentifier( fld.name() );
-        values += delim + "?";
-        delim = ",";
-        kdelim = ",";
+        values += delim + '?';
+        delim = ',';
+        kdelim = ',';
         fieldId << idx;
         defaultValues << defaultValue( idx ).toString();
       }
 
-      if ( !getfid.prepare( QString( "SELECT %1 FROM %2 WHERE ROWID=?" ).arg( keys ).arg( mQuery ) ) )
+      if ( !getfid.prepare( QStringLiteral( "SELECT %1 FROM %2 WHERE ROWID=?" ).arg( keys ).arg( mQuery ) ) )
       {
         throw OracleException( tr( "Could not prepare get feature id statement" ), getfid );
       }
@@ -1270,16 +1270,16 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
 
       QString defVal = defaultValue( idx ).toString();
 
-      values += delim + "?";
+      values += delim + '?';
       defaultValues.append( defVal );
       fieldId.append( idx );
 
-      delim = ",";
+      delim = ',';
     }
 
     insert += values + ")";
 
-    QgsDebugMsgLevel( QString( "SQL prepare: %1" ).arg( insert ), 4 );
+    QgsDebugMsgLevel( QStringLiteral( "SQL prepare: %1" ).arg( insert ), 4 );
     if ( !ins.prepare( insert ) )
     {
       throw OracleException( tr( "Could not prepare insert statement" ), ins );
@@ -1289,7 +1289,7 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
     {
       QgsAttributes attributevec = features->attributes();
 
-      QgsDebugMsgLevel( QString( "insert feature %1" ).arg( features->id() ), 4 );
+      QgsDebugMsgLevel( QStringLiteral( "insert feature %1" ).arg( features->id() ), 4 );
 
       if ( !mGeometryColumn.isNull() )
       {
@@ -1318,7 +1318,7 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
           }
         }
 
-        QgsDebugMsgLevel( QString( "addBindValue: %1" ).arg( v ), 4 );
+        QgsDebugMsgLevel( QStringLiteral( "addBindValue: %1" ).arg( v ), 4 );
         ins.addBindValue( v );
       }
 
@@ -1330,7 +1330,7 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
         if ( mPrimaryKeyType == PktRowId )
         {
           features->setId( mShared->lookupFid( QList<QVariant>() << QVariant( ins.lastInsertId() ) ) );
-          QgsDebugMsgLevel( QString( "new fid=%1" ).arg( features->id() ), 4 );
+          QgsDebugMsgLevel( QStringLiteral( "new fid=%1" ).arg( features->id() ), 4 );
         }
         else if ( mPrimaryKeyType == PktInt || mPrimaryKeyType == PktFidMap )
         {
@@ -1383,7 +1383,7 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
 
             features->setId( mShared->lookupFid( primaryKeyVals ) );
           }
-          QgsDebugMsgLevel( QString( "new fid=%1" ).arg( features->id() ), 4 );
+          QgsDebugMsgLevel( QStringLiteral( "new fid=%1" ).arg( features->id() ), 4 );
         }
       }
     }
@@ -1392,7 +1392,7 @@ bool QgsOracleProvider::addFeatures( QgsFeatureList &flist, QgsFeatureSink::Flag
   }
   catch ( OracleException &e )
   {
-    QgsDebugMsg( QString( "Oracle error: %1" ).arg( e.errorMessage() ) );
+    QgsDebugMsg( QStringLiteral( "Oracle error: %1" ).arg( e.errorMessage() ) );
     pushError( tr( "Oracle error while adding features: %1" ).arg( e.errorMessage() ) );
     if ( !db.rollback() )
     {