Bug 191168 [Regression]Exception occurs when resize masterpage in library
Description: Exception occurs when resize masterpage in library. Build number:2.2.0.v20070606-0630 Regression bug:187443 Steps to reproduce: 1. New a library. 2. Go to Master Page, resize the master page using the ruler. Expected result: 1. Layout works correctly. 2. No exception is thrown out. Error log: An unexpected internal exception occurred.Please see log for detail. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20070606-0630 Error Code:Error.GUIException.invokedByUnexpectedException Error Message:org.eclipse.birt.report.designer.internal.lib.lalyout.LibraryReportDesignLayout
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
ElementDefn defn = (ElementDefn) element.getDefn( );
		assert module.getElementByID( element.getID( ) ) == null;
		assert element.getID( ) > NO_ID;
		module.addElementID( element );
		
		
		String name = element.getName( );
		assert !StringUtil.isBlank( name )
				|| defn.getNameOption( ) != MetaDataConstants.REQUIRED_NAME;
		
		assert element.getContainer( ) != null;
		int id = defn.getNameSpaceID( );
		if ( name != null && id != MetaDataConstants.NO_NAME_SPACE
				&& element.isManagedByNameSpace( ) )
		{
			
			
			
			NameSpace ns = new NameExecutor( element ).getNameSpace( module );
			assert !ns.contains( name );
			ns.insert( element );
		}
		if ( defn.isContainer( ) )
		{
			Iterator iter = new LevelContentIterator( this, element, 1 );
			while ( iter.hasNext( ) )
			{
				DesignElement innerElement = (DesignElement) iter.next( );
				buildNameSpaceAndIDMap( module, innerElement );
			}