Bug 121498 When datasource/dataset deleted, the datasource/dataset property binding element haven't been deleted
When deleted the datasource/dataset, the datasource/dataset property binding element haven't been deleted. Expected result: This operation must be a transaction.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
DesignElement innerElement = slot.getContent( pos );
				manageId( innerElement, isAdd, forceReSet );
			}
		}
	}
	/**
	 * Gets the location information of the module.
	 * 
	 * @return the location information of the module
	 */
	public String getLocation( )
	{
		assert systemId != null;
		if ( fileName == null )
			return systemId.toString( );
		return systemId + StringUtil.extractFileNameWithSuffix( fileName );
	}
	/**
	 * Gets the library with the given location path.
	 * 
	 * @param theLocation
	 *            the location path to find
	 * @return the library with the given location path if found, otherwise null
	 */
	public Library getLibraryByLocation( String theLocation )
	{
		
		if ( StringUtil.isBlank( theLocation ) )
			return null;