* @see WireParser
*/
public class MapBinding implements Binding {
public Object parse(Element element, Parse parse, Parser parser) {
MapDescriptor descriptor = new MapDescriptor();
String className = XmlUtil.attribute(element,"class");
if (AbstractCollectionBinding.verify(className, Map.class, parse, parser)) {
descriptor.setClassName(className);
}
List<Descriptor> keyDescriptors = new ArrayList<Descriptor>();
List<Descriptor> valueDescriptors = new ArrayList<Descriptor>();
List<Element> elements = XmlUtil.elements(element);
if (elements!=null) {
for (Element entryElement: elements) {
if ("entry".equals(XmlUtil.getTagName(entryElement))) {
// key
Element keyElement = XmlUtil.element(entryElement, "key");
Element keyDescriptorElement = (keyElement!=null ? XmlUtil.element(keyElement) : null);
Descriptor keyDescriptor = (Descriptor) parser.parseElement(keyDescriptorElement, parse, WireParser.CATEGORY_DESCRIPTOR);
// value
Element valueElement = XmlUtil.element(entryElement, "value");
Element valueDescriptorElement = (valueElement!=null ? XmlUtil.element(valueElement) : null);
Descriptor valueDescriptor = (Descriptor) parser.parseElement(valueDescriptorElement, parse, WireParser.CATEGORY_DESCRIPTOR);
if ( (keyDescriptor!=null)
&& (valueDescriptor!=null)
) {
keyDescriptors.add(keyDescriptor);
valueDescriptors.add(valueDescriptor);
} else {
parse.addProblem("entry must have key and value element with a single descriptor as contents: "+XmlUtil.toString(entryElement));
}
} else {
parse.addProblem("map can only contain entry elements: "+XmlUtil.toString(entryElement));
}
}
}
descriptor.setKeyDescriptors(keyDescriptors);
descriptor.setValueDescriptors(valueDescriptors);
return descriptor;
}