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
/**
	 * Sets Splitter Weights.
	 * if left side is too wide,set weights with default value 40,60.  
	 * @param splitter
	 */
	private void setSashFormWeights(SashForm sashForm) {
		int leftWidth = sashForm.getChildren( )[0].computeSize( SWT.DEFAULT,
				SWT.DEFAULT ).x;
		int totalWidth = sashForm.computeSize( SWT.DEFAULT, SWT.DEFAULT ).x;
		if ( (double) leftWidth / (double) totalWidth > 0.4 )
		{
			
			sashForm.setWeights( new int[]{
					40, 60
			} );
		}
		else
		{
			sashForm.setWeights( new int[]{
					leftWidth, totalWidth - leftWidth
			} );
		}
		
	}
	
	/**
	 * Creates the composite,  for displaying the list of available db objects
	 * @param parent
	 */
	private void createTableSelectionComposite( Composite parent )