1/*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.tools.internal.xjc.api.impl.s2j;
27
28import javax.xml.bind.JAXBElement;
29import javax.xml.namespace.QName;
30
31import com.sun.tools.internal.xjc.outline.FieldOutline;
32import com.sun.tools.internal.xjc.outline.ClassOutline;
33import com.sun.tools.internal.xjc.outline.FieldAccessor;
34import com.sun.tools.internal.xjc.outline.Outline;
35import com.sun.tools.internal.xjc.model.CPropertyInfo;
36import com.sun.tools.internal.xjc.model.CElementInfo;
37import com.sun.tools.internal.xjc.model.CReferencePropertyInfo;
38import com.sun.codemodel.internal.JExpression;
39import com.sun.codemodel.internal.JBlock;
40import com.sun.codemodel.internal.JExpr;
41import com.sun.codemodel.internal.JCodeModel;
42import com.sun.codemodel.internal.JInvocation;
43
44/**
45 * {@link FieldOutline} that wraps another {@link FieldOutline}
46 * and allows JAX-WS to access values without using about
47 * {@link JAXBElement}.
48 *
49 * <p>
50 * That means if a value is requested, we unwrap JAXBElement
51 * and give it to them. If a value is set, we wrap that into
52 * JAXBElement, etc.
53 *
54 * <p>
55 * This can be used only with {@link CReferencePropertyInfo}
56 * (or else it won't be {@link JAXBElement),
57 * with one {@link CElementInfo} (or else we can't infer the tag name.)
58 *
59 * @author Kohsuke Kawaguchi
60 */
61abstract class ElementAdapter implements FieldOutline {
62    protected final FieldOutline core;
63
64    /**
65     * The only one {@link CElementInfo} that can be in the property.
66     */
67    protected final CElementInfo ei;
68
69    public ElementAdapter(FieldOutline core, CElementInfo ei) {
70        this.core = core;
71        this.ei = ei;
72    }
73
74    public ClassOutline parent() {
75        return core.parent();
76    }
77
78    public CPropertyInfo getPropertyInfo() {
79        return core.getPropertyInfo();
80    }
81
82    protected final Outline outline() {
83        return core.parent().parent();
84    }
85
86    protected final JCodeModel codeModel() {
87        return outline().getCodeModel();
88    }
89
90    protected abstract class FieldAccessorImpl implements FieldAccessor {
91        final FieldAccessor acc;
92
93        public FieldAccessorImpl(JExpression target) {
94            acc = core.create(target);
95        }
96
97        public void unsetValues(JBlock body) {
98            acc.unsetValues(body);
99        }
100
101        public JExpression hasSetValue() {
102            return acc.hasSetValue();
103        }
104
105        public FieldOutline owner() {
106            return ElementAdapter.this;
107        }
108
109        public CPropertyInfo getPropertyInfo() {
110            return core.getPropertyInfo();
111        }
112
113        /**
114         * Wraps a type value into a {@link JAXBElement}.
115         */
116        protected final JInvocation createJAXBElement(JExpression $var) {
117            JCodeModel cm = codeModel();
118
119            return JExpr._new(cm.ref(JAXBElement.class))
120                .arg(JExpr._new(cm.ref(QName.class))
121                    .arg(ei.getElementName().getNamespaceURI())
122                    .arg(ei.getElementName().getLocalPart()))
123                .arg(getRawType().boxify().erasure().dotclass())
124                .arg($var);
125        }
126    }
127}
128