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
* 
	 */
	private void setPageLayout( )
	{
		removeAllAvailableDbObjects( );
		enableSchemaComponent( isSchemaSupported );
		setRootElement( );
		sourceViewerConfiguration.getContentAssistProcessor( )
				.setDataSourceHandle( this.getDataSetDesign( ).getDataSourceDesign( ) );
 
		populateAvailableDbObjects( );
		try 
		{
			if ( metaDataProvider.getConnection( ) == null
					|| this.getDataSetDesign( ).getQueryText( ) == null
					|| this.getDataSetDesign( )
							.getQueryText( )
							.trim( )
							.length( ) == 0 )
				return;
			
			ResultSetMetaData meta = null;
			try
			{
				meta = this.metaDataProvider.getConnection( )
						.prepareStatement( this.getDataSetDesign( )
								.getQueryText( ) )
						.getMetaData( );
			}
			catch ( SQLException e )