Bug 207561 [Regression] Conversion errror when preview the attached report design
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
initialImage( );
		initialJdbcInfo( );
		Control left = createTableSelectionComposite( pageContainer );
		Sash sash = createSash( pageContainer );
		Control right = createTextualQueryComposite( pageContainer );
		setWidthHints( pageContainer, left, right, sash );
		addDragListerner( sash, pageContainer, left, right );
		return pageContainer;
	}
	/**
	 * @param pageContainer
	 * @param left
	 * @param right
	 */
	private void setWidthHints( Composite pageContainer, Control left,
			Control right, Sash sash )
	{
		int leftWidth = left.computeSize( SWT.DEFAULT, SWT.DEFAULT ).x;
		int totalWidth = pageContainer.computeSize( SWT.DEFAULT, SWT.DEFAULT ).x;
		if ( (double) leftWidth / (double) totalWidth > 0.4 )
		{
			
			totalWidth = leftWidth / 40 * 100;
			leftWidth = leftWidth - sash.computeSize( SWT.DEFAULT, SWT.DEFAULT ).x;
			GridData data = (GridData) left.getLayoutData( );
			data.widthHint = leftWidth;
			data = (GridData) right.getLayoutData( );
			data.widthHint = (int) ( totalWidth * 0.6 );
		}
		else