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
event.doit = false;
							return;
						}
					}
					else if ( selection[0].getData( ) instanceof ProcedureParameter )
					{
						event.doit = false;
						return;
					}
				}
				else if ( selection.length <= 0
						|| selection[0].getData( ) == null )
				{
					event.doit = false;
					return;
				}
			}
			public void dragSetData( DragSourceEvent event )
			{
				if ( TextTransfer.getInstance( ).isSupportedType(
						event.dataType ) )
				{
					TreeItem[] selection = availableDbObjectsTree.getSelection( );
					if ( selection.length > 0 )
					{
						Object obj = selection[0].getData( );
						if ( obj instanceof DbObject )
						{
							event.data = ( (DbObject) obj ).getName( );
						}