Bug 120215 BPS 40 - DE changes
1. all report elements' properties will be overidable with an expression. The binding expression will have access to report parameter, and static BIRT report objects only. 2) DE will provide api to get property binding expression for a given property on a report element handle. It's up to the engine to evaluate the property binding expression when the report gets executed. DE API changes -------------------------- a) DesignElementHandle will support the following two methods. - String (expression) GetPropertyBinding ( propertyName ) - void SetPropertyBinding( propertyName , String (expression) ) // Note get and set property methods are wrapper classes which actually use reportDesignHandle methods to retrive and set the property binding. b) rom.def changes Property bindings contains a list of binding expressions. ReportDesign element will be enhanced to support a new property called. <Property canInherit="false" detailType="propertyBinding" displayNameID="Element.Module.propertyBindings" isList="true" name="propertyBindings" type="structure"/> A new datatype - <Structure name="propertybinding"> <Member name="name" since="2.0" type="name"/> <Member name="id" returnType="any" since="2.0" type="string"/> // Use the unique id used to identify an element. <Member name="value" returnType="string" since="2.0" type="expression"/> </Structure>
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/PropertyCommand.java
* Adjusts references to a structure that is to be deleted. The structure to
	 * be deleted is one that has references in the form of structure reference
	 * properties on other elements. These other elements, called "clients",
	 * each contain a property of type structure reference and that property
	 * refers to this structure. Each reference is recorded with a "back
	 * pointer" from the referenced structure to the client. That back pointer
	 * has both a pointer to the client element, and the property within that
	 * element that holds the reference. The reference property is unresolved.
	 * 
	 * @param struct
	 *            the structure to be deleted
	 */
	private void adjustReferenceClients( ReferencableStructure struct )
	{
		assert struct != null;
		if ( !struct.hasReferences( ) )
			return;
		List clients = new ArrayList( struct.getClientList( ) );
		Iterator iter = clients.iterator( );
		while ( iter.hasNext( ) )
		{
			BackRef ref = (BackRef) iter.next( );
			DesignElement client = ref.element;
			BackRefRecord record = new StructBackRefRecord( module, struct,
					client, ref.propName );
			getActivityStack( ).execute( record );
		}
	}
	/**
	 * Replaces an item from a structure list with the new one.