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/api/ModuleHandle.java
* @throws SemanticException
	 *             if the old object is not found or the name of new one is
	 *             empty.
	 */
	private void replaceObjectInList( String propName, Object oldVar,
			Object newVar ) throws SemanticException
	{
		ElementPropertyDefn propDefn = module.getPropertyDefn( propName );
		PropertyCommand cmd = new PropertyCommand( module, getElement( ) );
		cmd.replaceItem( new CachedMemberRef( propDefn ), (Structure) oldVar,
				(Structure) newVar );
	}
	/**
	 * Saves the module to an existing file name. Call this only when the file
	 * name has been set.
	 * 
	 * @throws IOException
	 *             if the file cannot be saved on the storage
	 * 
	 * @see #saveAs(String)
	 */
	public void save( ) throws IOException
	{
		String fileName = getFileName( );
		assert fileName != null;
		if ( fileName == null )
			return;
		module.prepareToSave( );
		module.getWriter( ).write( new File( getModule( ).getFileName( ) ) );
		module.onSave( );