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
{
			action = new SQLEditorAction( viewer, name, operation );
			htActions.put( id, action );
		}
		return action;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.ui.IPropertyPage#pageActivated()
	 */
	public void pageActivated( )
	{
		getContainer( ).setMessage( JdbcPlugin.getResourceString( "dataset.editor.page.query" ), IMessageProvider.NONE );
		
		 
		
		refreshPage();
		
		prepareUI();		
	}
	/**
	 * Prepare UI when pageActivated event is invoked
	 * Following things will be done:
	 * 		Set StyledText content
	 * 		Set StyledText as focus
	 * 		
	 */
	private void prepareUI()
	{