Bug 123915 Add table-fetch limitation when DataSet Editor is populating table names.
When fetch table names from database of large volume of data, there lies a possibility that the editor window will be frozen because of the population of huge number of table names. This should be enhanced. A handy solution might be limiting the number of table names being fetched each schema.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
if ( metaDataProvider == null )
		{
			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(OdaDataSourceHandle curDataSourceHandle)
	{
		if( metaDataProvider != null )
		{
			metaDataProvider.closeConnection( );
			metaDataProvider = null;
			createMetaDataProvider( );
			jdbcConnection = connectMetadataProvider( metaDataProvider, curDataSourceHandle);
			
			
			tableList = null;
			schemaList = null;
			schemaCombo.removeAll();
		}
		
		try
		{
			if ( jdbcConnection != null)