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
private Text searchTxt = null;
    private boolean isSchemaSupported = false;
    private boolean expandDbObjectsTree = false;
    private Tree availableDbObjectsTree = null;
    private IMetaDataProvider metaDataProvider = null;
    private JdbcSQLSourceViewerConfiguration sourceViewerConfiguration = null;
	
	private Image schemaImage, tableImage, viewImage, 
		    dataBaseImage, columnImage;
	
	
	protected ArrayList schemaList;
	
	 
	protected ArrayList tableList;
	
	private ComboViewer filterComboViewer = null;
	private Combo schemaCombo = null;
	private Label schemaLabel = null;
	OdaDataSourceHandle prevDataSourceHandle = null;
	Connection jdbcConnection = null;
	boolean validConnection = false;
	
	private static String TABLE_ICON = "org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.TableIcon";
	private static String VIEW_ICON = "org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.ViewIcon";
	private static String PAGE_ICON = "org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.PageIcon";
	private static String SCHEMA_ICON = "org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.SchemaIcon";
	private static String DATABASE_ICON = "org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.DbIcon";
	private static String COLUMN_ICON = "org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.ColumnIcon";