Bug 191430 [Regression] The table will binding to the data set if add a data binding to the data set [0001]
Description: The table will binding to the data set if add a data binding to the data set. Build number: 2.2.0.v20070607-0630 Steps to reproduce: 1. New a report with a data set. 2. New a table (not binding to the data set), add a data in one table cell. 3. Right click to change the data column, select the data set and one column. 4. Select the table and go to the binding page. Expected result: The table is binding to only one column. Actual result: The table is binding to the data set. Error log: N/A
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
* Get definition of model property.
	 * 
	 * @param elementName
	 * @param propertyName
	 */
	public static IElementPropertyDefn getPropertyDefn( String elementName,
			String propertyName )
	{
		IElementDefn elementDefn = getMetaDataDictionary( ).getElement( elementName );
		if ( elementDefn != null )
		{
			return elementDefn.getProperty( propertyName );
		}
		return null;
	}
	/**
	 * Gets the proper expression for the given model
	 * 
	 * @param model
	 *            the given model
	 * @return Returns the proper expression for the given model, or null if no
	 *         proper one exists
	 */
	public static String getExpression( Object model )
	{
		if ( model instanceof ParameterHandle )
		{