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
String name )
	{
		return (TemplateParameterDefinition) resolveNativeElement( name,
				TEMPLATE_PARAMETER_NAME_SPACE );
	}
	/**
	 * Returns whether the namespace to check is duplicate in target module.
	 * This method helps to judge whether the library to check can be included
	 * in target module.
	 * 
	 * @param namespaceToCheck
	 *            the namespace to check
	 * @return true if the namespace to check is duplicate.
	 */
	public boolean isDuplicateNamespace( String namespaceToCheck )
	{
		Module rootHost = this;
		while ( rootHost instanceof Library
				&& ( (Library) rootHost ).getHost( ) != null )
			rootHost = ( (Library) rootHost ).getHost( );
		
		List libraries = rootHost.getLibraries( IAccessControl.ARBITARY_LEVEL );
		Iterator iter = libraries.iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			if ( library.getNamespace( ).equals( namespaceToCheck ) )
				return true;
		}
		return false;