| /* |
| * Copyright (c) 1998, 2019 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.internal.oxm.record.deferred; |
| |
| import org.eclipse.persistence.internal.oxm.XMLCompositeObjectMappingNodeValue; |
| import org.eclipse.persistence.internal.oxm.XPathFragment; |
| import org.eclipse.persistence.internal.oxm.mappings.CompositeObjectMapping; |
| import org.eclipse.persistence.internal.oxm.mappings.Descriptor; |
| import org.eclipse.persistence.internal.oxm.record.UnmarshalRecord; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * INTERNAL:<br> |
| * <p> |
| * <b>Purpose</b>: An implementation of DeferredContentHandler used to queue |
| * events to enable state-specific behavior for simple, complex or empty |
| * elements. |
| * <p> |
| * <b>Responsibilities</b>: |
| * <ul> |
| * <li>Null Composite Objects are marshalled in 2 ways when the input XML node is |
| * empty. (1) as null - isNullRepresentedByEmptyNode = true (2) as empty object - |
| * isNullRepresentedByEmptyNode = false A deferred contentHandler is used to |
| * queue events until we are able to determine whether we are in one of |
| * empty/simple/complex state. Control is returned to the UnmarshalHandler after |
| * creation of (1) or (2) above is started.</li> |
| * </ul> |
| */ |
| public class CompositeObjectMappingContentHandler extends CompositeMappingContentHandler { |
| |
| /** The NullCapableValue that passed control to this handler */ |
| private XMLCompositeObjectMappingNodeValue nodeValue; |
| |
| public CompositeObjectMappingContentHandler(UnmarshalRecord parentRecord, // |
| XMLCompositeObjectMappingNodeValue aNodeValue, CompositeObjectMapping aMapping, // |
| Attributes atts, XPathFragment aFragment, Descriptor aDescriptor) { |
| super(parentRecord, aMapping, atts, aMapping.getNullPolicy(), aFragment, aDescriptor); |
| nodeValue = aNodeValue; |
| } |
| |
| @Override |
| protected XMLCompositeObjectMappingNodeValue getNodeValue() { |
| return nodeValue; |
| } |
| |
| |
| @Override |
| protected void processEmptyElement() throws SAXException { |
| // Remove original startElement event as it has been precluded by the nodeValue call below |
| getEvents().remove(0); |
| // Prerequisite: We know that (nullPolicy.isNullRepresentedByEmptyNode() || nullPolicy.isNullRepresentedByXsiNil()) is true |
| // Null: Set the object to null on the node value if we are empty with inrben=true |
| nodeValue.setNullValue(getParent().getCurrentObject(), getParent().getSession()); |
| executeEvents(getParent()); |
| } |
| |
| } |