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/DesignElementHandle.java
* Returns the element factory for creating new report elements. After
	 * creating the element, add it to the design by calling the the
	 * <code>{@link SlotHandle#add( DesignElementHandle ) add}</code> method
	 * of the slot handle that represents the point in the design where the new
	 * element should appear.
	 * 
	 * @return a handle to the new element.
	 * @see SlotHandle
	 */
	public ElementFactory getElementFactory( )
	{
		return new ElementFactory( module );
	}
	/**
	 * Returns a property handle for a top-level property. A top-level property
	 * is a property that defines on an element.
	 * 
	 * @param propName
	 *            the name of the property to get
	 * @return The property handle, or <code>null</code> if the no property
	 *         exists with the given name.
	 * @see PropertyHandle
	 */
	public PropertyHandle getPropertyHandle( String propName )
	{
		DesignElement element = getElement( );
		ElementPropertyDefn propDefn = element.getPropertyDefn( propName );
		if ( propDefn == null )
			return null;
		return new PropertyHandle( this, propDefn );