| /* |
| * Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.jaxb; |
| |
| import jakarta.xml.bind.JAXBElement; |
| import javax.xml.namespace.QName; |
| |
| import org.eclipse.persistence.exceptions.XMLMarshalException; |
| import org.eclipse.persistence.internal.oxm.XPathFragment; |
| import org.eclipse.persistence.internal.oxm.mappings.Descriptor; |
| import org.eclipse.persistence.oxm.XMLContext; |
| |
| /** |
| * INTERNAL |
| * <p><b>Purpose:</b>Provide a TopLink implementation of JAXBIntrospector |
| * <p><b>Responsibilities:</b><ul> |
| * <li>Determine if a an object has an associated Global Element</li> |
| * <li>Get an element QName for an object that has an associated global element</li> |
| * </ul> |
| * <p>This class is the TopLink implementation of JAXBIntrospector. An Introspector is created |
| * by a JAXBContext and allows the user to access certain pieces of meta-data about an instance |
| * of a JAXB bound class. |
| * |
| * @see jakarta.xml.bind.JAXBIntrospector |
| * @see org.eclipse.persistence.jaxb.JAXBContext |
| * @author mmacivor |
| * @since Oracle TopLink 11.1.1.0.0 |
| */ |
| |
| public class JAXBIntrospector extends jakarta.xml.bind.JAXBIntrospector { |
| private XMLContext context; |
| public JAXBIntrospector(XMLContext context) { |
| this.context = context; |
| } |
| |
| @Override |
| public boolean isElement(Object obj) { |
| if (obj instanceof JAXBElement) { |
| return true; |
| } |
| |
| try { |
| Descriptor descriptor = context.getDescriptorForObject(obj); |
| return null != descriptor && null != descriptor.getDefaultRootElementField(); |
| } catch(XMLMarshalException e) { |
| return false; |
| } |
| } |
| |
| @Override |
| public QName getElementName(Object obj) { |
| if(!isElement(obj)) { |
| return null; |
| } |
| |
| if(obj instanceof JAXBElement) { |
| return ((JAXBElement) obj).getName(); |
| } |
| try { |
| Descriptor descriptor = (Descriptor)context.getSession(obj).getDescriptor(obj); |
| XPathFragment rootFragment = descriptor.getDefaultRootElementField().getXPathFragment(); |
| return new QName(rootFragment.getNamespaceURI(), rootFragment.getLocalName()); |
| } catch(XMLMarshalException e) { |
| return null; |
| } |
| } |
| } |