Bug 134988 [regression]Available items in Query didn't change when change data source in Edit Data Set Dialog.
Description: Available items in Query didn't change when change data source in Edit Data Set Dialog. Steps to reproduce: 1. New two different data sources. 2. New a dataset, change data source, view Available Items in Query pane. Expected result: Available Items in Query pane changed according to new Data source. Actual result: Available Items in Query pane kept unchanged.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
metaDataProvider = new JdbcMetaDataProvider(null);		
		}
	}
	
	/**
	 *  Initializes the Jdbc related information , used  by this page
	 * ( such as the Jdbc Connection , Catalog Name etc )
	 * @param curDataSourceHandle
	 *
	 */
	protected void resetJdbcInfo(DataSourceDesign curDataSourceDesign)
	{
		if( metaDataProvider != null )
		{
			metaDataProvider.closeConnection( );
			metaDataProvider = null;
			createMetaDataProvider( );
			jdbcConnection = connectMetadataProvider( metaDataProvider, curDataSourceDesign);
			
			
			tableList = null;
			schemaList = null;
			schemaCombo.removeAll();
		}
		
		try
		{
			if ( jdbcConnection != null)
			{
				isSchemaSupported = metaDataProvider.isSchemaSupported();