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
groupLayout.verticalSpacing = 10;
			selectTableGroup.setLayout(groupLayout);
			
			GridData data = new GridData(GridData.FILL_HORIZONTAL);
			selectTableGroup.setLayoutData(data);
		}
		
		schemaLabel = new Label( selectTableGroup, SWT.LEFT );
		schemaLabel.setText( JdbcPlugin.getResourceString("tablepage.label.schema") );
		schemaCombo = new Combo( selectTableGroup, SWT.READ_ONLY );
		GridData gd = new GridData( GridData.FILL_HORIZONTAL );
		gd.horizontalSpan = 2;
		schemaCombo.setLayoutData( gd );
		enableSchemaComponent( isSchemaSupported );
	
		Label FilterLabel = new Label(selectTableGroup, SWT.LEFT);
		FilterLabel.setText(JdbcPlugin.getResourceString("tablepage.label.filter"));
		
		searchTxt = new Text(selectTableGroup, SWT.BORDER) ;
		{
			GridData data = new GridData(GridData.FILL_HORIZONTAL);
			data.horizontalSpan = 2;
			searchTxt.setLayoutData(data);
		}
		
		
		Label selectTypeLabel = new Label(selectTableGroup, SWT.NONE);
		selectTypeLabel.setText(JdbcPlugin.getResourceString("tablepage.label.selecttype"));