[oracle] Fix minor Coverity issues

(cherry-picked from b94fbc0)

src/providers/oracle/qgsoracleconn.cpp

@@ -31,7 +31,7 @@ QMap<QString, QgsOracleConn *> QgsOracleConn::sConnections;
 int QgsOracleConn::snConnections = 0;
 const int QgsOracleConn::sGeomTypeSelectLimit = 100;
 
-QgsOracleConn *QgsOracleConn::connectDb( QgsDataSourceURI uri )
+QgsOracleConn *QgsOracleConn::connectDb( const QgsDataSourceURI& uri )
 {
   QString conninfo = uri.connectionInfo();
 

src/providers/oracle/qgsoracleconn.h

@@ -45,6 +45,10 @@ struct QgsOracleLayerProperty
   QStringList          pkCols;
   QString              sql;
 
+  QgsOracleLayerProperty()
+      : isView( false )
+  {}
+
   int size() const { Q_ASSERT( types.size() == srids.size() ); return types.size(); }
 
   bool operator==( const QgsOracleLayerProperty& other )
@@ -107,7 +111,7 @@ class QgsOracleConn : public QObject
 {
     Q_OBJECT
   public:
-    static QgsOracleConn *connectDb( QgsDataSourceURI uri );
+    static QgsOracleConn *connectDb( const QgsDataSourceURI &uri );
     void disconnect();
 
     /** Double quote a Oracle identifier for placement in a SQL string.

src/providers/oracle/qgsoracleconnpool.h

@@ -25,7 +25,7 @@ inline QString qgsConnectionPool_ConnectionToName( QgsOracleConn* c )
   return c->connInfo();
 }
 
-inline void qgsConnectionPool_ConnectionCreate( QgsDataSourceURI uri, QgsOracleConn*& c )
+inline void qgsConnectionPool_ConnectionCreate( const QgsDataSourceURI& uri, QgsOracleConn*& c )
 {
   c = QgsOracleConn::connectDb( uri );
 }

src/providers/oracle/qgsoracleprovider.cpp

@@ -1772,7 +1772,6 @@ void QgsOracleProvider::appendGeomParam( const QgsGeometry *geom, QSqlQuery &qry
     g.eleminfo.clear();
     g.ordinates.clear();
 
-    QString expr;
     int iOrdinate = 1;
     QGis::WkbType type = ( QGis::WkbType ) * ptr.iPtr++;
     int dim = 2;
@@ -1781,6 +1780,8 @@ void QgsOracleProvider::appendGeomParam( const QgsGeometry *geom, QSqlQuery &qry
     {
       case QGis::WKBPoint25D:
         dim = 3;
+        FALLTHROUGH;
+
       case QGis::WKBPoint:
         g.srid  = mSrid;
         g.gtype = SDO_GTYPE( dim, gtPoint );
@@ -1792,6 +1793,8 @@ void QgsOracleProvider::appendGeomParam( const QgsGeometry *geom, QSqlQuery &qry
       case QGis::WKBLineString25D:
       case QGis::WKBMultiLineString25D:
         dim = 3;
+        FALLTHROUGH;
+
       case QGis::WKBLineString:
       case QGis::WKBMultiLineString:
       {
@@ -1827,6 +1830,8 @@ void QgsOracleProvider::appendGeomParam( const QgsGeometry *geom, QSqlQuery &qry
       case QGis::WKBPolygon25D:
       case QGis::WKBMultiPolygon25D:
         dim = 3;
+        FALLTHROUGH;
+
       case QGis::WKBPolygon:
       case QGis::WKBMultiPolygon:
       {
@@ -1866,6 +1871,8 @@ void QgsOracleProvider::appendGeomParam( const QgsGeometry *geom, QSqlQuery &qry
 
       case QGis::WKBMultiPoint25D:
         dim = 3;
+        FALLTHROUGH;
+
       case QGis::WKBMultiPoint:
       {
         g.gtype = SDO_GTYPE( dim, gtMultiPoint );
@@ -2734,7 +2741,7 @@ QgsVectorLayerImport::ImportError QgsOracleProvider::createEmptyLayer(
 
   QgsDebugMsg( QString( "layer %1 created" ).arg( ownerTableName ) );
 
-  // use the provider to edit the table
+  // use the provider to edit the table1
   dsUri.setDataSource( ownerName, tableName, geometryColumn, QString(), primaryKey );
   QgsOracleProvider *provider = new QgsOracleProvider( dsUri.uri() );
   if ( !provider->isValid() )
@@ -2749,8 +2756,7 @@ QgsVectorLayerImport::ImportError QgsOracleProvider::createEmptyLayer(
   QgsDebugMsg( "layer loaded" );
 
   // add fields to the layer
-  if ( oldToNewAttrIdxMap )
-    oldToNewAttrIdxMap->clear();
+  oldToNewAttrIdxMap->clear();
 
   if ( fields.size() > 0 )
   {

src/providers/oracle/qgsoracleprovider.h

@@ -400,7 +400,6 @@ class QgsOracleProvider : public QgsVectorDataProvider
     QgsFeatureId mFidCounter;                //! next feature id if map is used
     QgsOracleConn *mConnection;
 
-    bool mHasSpatial;                        //! Oracle Spatial is installed
     bool mHasSpatialIndex;                   //! Geometry column is indexed
     QString mSpatialIndexName;               //! name of spatial index of geometry column