Bug 207561 [Regression] Conversion errror when preview the attached report design
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
createMetaDataProvider( );
		jdbcConnection = connectMetadataProvider( metaDataProvider,
				this.getDataSetDesign( ).getDataSourceDesign( ) );
		try
		{
			if ( jdbcConnection != null )
			{
				
				isSchemaSupported = metaDataProvider.isSchemaSupported( );
			}
		}
		catch ( Exception e )
		{
			ExceptionHandler.showException( this.getShell( ),
					JdbcPlugin.getResourceString( "exceptionHandler.title.error" ),
					e.getLocalizedMessage( ),
					e );
		}
	}
	/**
	 * initial dataset control
	 * 
	 */
	private void initializeControl( )
	{
		isPageInitialization = true;
		
		initializeSchemaPrefetchConfig( );
		
		DEFAULT_MESSAGE = JdbcPlugin.getResourceString( "dataset.new.query" );