Provider key getter and layer options

qgis · Jul 7, 2020 · 8ded0f1 · 8ded0f1
1 parent 1d1b689
commit 8ded0f1
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Showing 3 changed files with 23 additions and 3 deletions.
diff --git a/python/core/auto_generated/qgsabstractdatabaseproviderconnection.sip.in b/python/core/auto_generated/qgsabstractdatabaseproviderconnection.sip.in
@@ -475,9 +475,16 @@ Raises a QgsProviderConnectionException if any errors are encountered.
    the default implementation creates a temporary vector layer, providers may
    choose to override this method for a greater efficiency.
 
-.. versionadded:: 3.18
+.. versionadded:: 3.16
 
 :raises :: py:class:`QgsProviderConnectionException`
+%End
+
+    QString providerKey() const;
+%Docstring
+Returns the provider key
+
+.. versionadded:: 3.16
 %End
 
   protected:

diff --git a/src/core/qgsabstractdatabaseproviderconnection.cpp b/src/core/qgsabstractdatabaseproviderconnection.cpp
@@ -52,6 +52,11 @@ void QgsAbstractDatabaseProviderConnection::checkCapability( QgsAbstractDatabase
     throw QgsProviderConnectionException( QObject::tr( "Operation '%1' is not supported for this connection" ).arg( capName ) );
   }
 }
+
+QString QgsAbstractDatabaseProviderConnection::providerKey() const
+{
+  return mProviderKey;
+}
 ///@endcond
 
 void QgsAbstractDatabaseProviderConnection::createVectorTable( const QString &schema,
@@ -215,7 +220,9 @@ QList<QgsAbstractDatabaseProviderConnection::TableProperty::GeometryColumnType>
 
 QgsFields QgsAbstractDatabaseProviderConnection::fields( const QString &schema, const QString &tableName ) const
 {
-  QgsVectorLayer vl { tableUri( schema, tableName ), QStringLiteral( "temp_layer" ), mProviderKey };
+  QgsVectorLayer::LayerOptions options { true, true };
+  options.skipCrsValidation = true;
+  QgsVectorLayer vl { tableUri( schema, tableName ), QStringLiteral( "temp_layer" ), mProviderKey, options };
   if ( vl.isValid() )
   {
     return vl.fields();

diff --git a/src/core/qgsabstractdatabaseproviderconnection.h b/src/core/qgsabstractdatabaseproviderconnection.h
@@ -501,11 +501,17 @@ class CORE_EXPORT QgsAbstractDatabaseProviderConnection : public QgsAbstractProv
      * Raises a QgsProviderConnectionException if any errors are encountered.
      * \note the default implementation creates a temporary vector layer, providers may
      * choose to override this method for a greater efficiency.
-     * \since QGIS 3.18
+     * \since QGIS 3.16
      * \throws QgsProviderConnectionException
      */
     virtual QgsFields fields( const QString &schema, const QString &table ) const SIP_THROW( QgsProviderConnectionException );
 
+    /**
+     * Returns the provider key
+     * \since QGIS 3.16
+     */
+    QString providerKey() const;
+
   protected:
 
 ///@cond PRIVATE