1 /*
2 * Copyright (c) 1997, 2015, 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
26 package com.sun.tools.internal.xjc.reader.dtd.bindinfo;
27
28 import java.io.IOException;
29 import java.io.StringReader;
30 import java.util.Map;
31
32 import javax.xml.bind.annotation.adapters.XmlAdapter;
33 import javax.xml.parsers.DocumentBuilderFactory;
34 import javax.xml.parsers.ParserConfigurationException;
35
36 import com.sun.codemodel.internal.JClass;
37 import com.sun.codemodel.internal.JClassAlreadyExistsException;
38 import com.sun.codemodel.internal.JCodeModel;
39 import com.sun.codemodel.internal.JDefinedClass;
40 import com.sun.codemodel.internal.JExpr;
41 import com.sun.codemodel.internal.JExpression;
42 import com.sun.codemodel.internal.JMethod;
43 import com.sun.codemodel.internal.JMod;
44 import com.sun.codemodel.internal.JPackage;
45 import com.sun.codemodel.internal.JPrimitiveType;
46 import com.sun.codemodel.internal.JType;
47 import com.sun.codemodel.internal.JVar;
48 import com.sun.tools.internal.xjc.model.CAdapter;
49 import com.sun.tools.internal.xjc.model.CBuiltinLeafInfo;
50 import com.sun.tools.internal.xjc.model.TypeUse;
51 import com.sun.tools.internal.xjc.model.TypeUseFactory;
52
53 import com.sun.xml.internal.bind.v2.util.XmlFactory;
54 import org.w3c.dom.Element;
55 import org.xml.sax.InputSource;
56 import org.xml.sax.Locator;
57 import org.xml.sax.SAXException;
58
59 /**
60 * {@code <conversion>} declaration in the binding file.
61 * This declaration declares a conversion by user-specified methods.
62 */
63 public class BIUserConversion implements BIConversion
64 {
65 /**
66 * Wraps a given {@code <conversion>} element in the binding file.
67 */
68 BIUserConversion( BindInfo bi, Element _e ) {
69 this.owner = bi;
70 this.e = _e;
71 }
72
73 private static void add( Map<String,BIConversion> m, BIConversion c ) {
74 m.put( c.name(), c );
75 }
76
77 /** Adds all built-in conversions into the given map. */
78 static void addBuiltinConversions( BindInfo bi, Map<String,BIConversion> m ) {
79 add( m, new BIUserConversion( bi, parse("<conversion name='boolean' type='java.lang.Boolean' parse='getBoolean' />")));
80 add( m, new BIUserConversion( bi, parse("<conversion name='byte' type='java.lang.Byte' parse='parseByte' />")));
81 add( m, new BIUserConversion( bi, parse("<conversion name='short' type='java.lang.Short' parse='parseShort' />")));
82 add( m, new BIUserConversion( bi, parse("<conversion name='int' type='java.lang.Integer' parse='parseInt' />")));
83 add( m, new BIUserConversion( bi, parse("<conversion name='long' type='java.lang.Long' parse='parseLong' />")));
84 add( m, new BIUserConversion( bi, parse("<conversion name='float' type='java.lang.Float' parse='parseFloat' />")));
85 add( m, new BIUserConversion( bi, parse("<conversion name='double' type='java.lang.Double' parse='parseDouble' />")));
86 }
87
88 private static Element parse(String text) {
89 try {
90 //this is parsing well known schemas, do not configure secure processing - always true
91 DocumentBuilderFactory dbf = XmlFactory.createDocumentBuilderFactory(false);
92 InputSource is = new InputSource(new StringReader(text));
93 return dbf.newDocumentBuilder().parse(is).getDocumentElement();
94 } catch (SAXException x) {
95 throw new Error(x);
96 } catch (IOException x) {
97 throw new Error(x);
98 } catch (ParserConfigurationException x) {
99 throw new Error(x);
100 }
101 }
102
103
104 /** The owner {@link BindInfo} object to which this object belongs. */
105 private final BindInfo owner;
106
107 /** {@code <conversion>} element which this object is wrapping. */
108 private final Element e;
109
110
111
112 /** Gets the location where this declaration is declared. */
113 public Locator getSourceLocation() {
114 return DOMLocator.getLocationInfo(e);
115 }
116
117 /** Gets the conversion name. */
118 public String name() { return DOMUtil.getAttribute(e,"name"); }
119
120 /** Gets a transducer for this conversion. */
121 public TypeUse getTransducer() {
122
123 String ws = DOMUtil.getAttribute(e,"whitespace");
124 if(ws==null) ws = "collapse";
125
126 String type = DOMUtil.getAttribute(e,"type");
127 if(type==null) type=name();
128 JType t=null;
129
130 int idx = type.lastIndexOf('.');
131 if(idx<0) {
132 // no package name is specified.
133 try {
134 t = JPrimitiveType.parse(owner.codeModel,type);
135 } catch( IllegalArgumentException ex ) {
136 // otherwise treat it as a class name in the current package
137 type = owner.getTargetPackage().name()+'.'+type;
138 }
139 }
140 if(t==null) {
141 try {
142 // TODO: revisit this later
143 JDefinedClass cls = owner.codeModel._class(type);
144 cls.hide();
145 t = cls;
146 } catch( JClassAlreadyExistsException ex ) {
147 t = ex.getExistingClass();
148 }
149 }
150
151 String parse = DOMUtil.getAttribute(e,"parse");
152 if(parse==null) parse="new";
153
154 String print = DOMUtil.getAttribute(e,"print");
155 if(print==null) print="toString";
156
157 JDefinedClass adapter = generateAdapter(owner.codeModel, parse, print, t.boxify());
158
159 // XmlJavaType customization always converts between string and an user-defined type.
160 return TypeUseFactory.adapt(CBuiltinLeafInfo.STRING,new CAdapter(adapter));
161 }
162
163 // TODO: anyway to reuse this code between XML Schema compiler?
164 private JDefinedClass generateAdapter(JCodeModel cm, String parseMethod, String printMethod, JClass inMemoryType) {
165 JDefinedClass adapter = null;
166
167 int id = 1;
168 while(adapter==null) {
169 try {
170 JPackage pkg = owner.getTargetPackage();
171 adapter = pkg._class("Adapter"+id);
172 } catch (JClassAlreadyExistsException ex) {
173 // try another name in search for an unique name.
174 // this isn't too efficient, but we expect people to usually use
175 // a very small number of adapters.
176 id++;
177 }
178 }
179
180 adapter._extends(cm.ref(XmlAdapter.class).narrow(String.class).narrow(inMemoryType));
181
182 JMethod unmarshal = adapter.method(JMod.PUBLIC, inMemoryType, "unmarshal");
183 JVar $value = unmarshal.param(String.class, "value");
184
185 JExpression inv;
186
187 if( parseMethod.equals("new") ) {
188 // "new" indicates that the constructor of the target type
189 // will do the unmarshalling.
190
191 // RESULT: new <type>()
192 inv = JExpr._new(inMemoryType).arg($value);
193 } else {
194 int idx = parseMethod.lastIndexOf('.');
195 if(idx<0) {
196 // parseMethod specifies the static method of the target type
197 // which will do the unmarshalling.
198
199 // because of an error check at the constructor,
200 // we can safely assume that this cast works.
201 inv = inMemoryType.staticInvoke(parseMethod).arg($value);
202 } else {
203 inv = JExpr.direct(parseMethod+"(value)");
204 }
205 }
206 unmarshal.body()._return(inv);
207
208
209 JMethod marshal = adapter.method(JMod.PUBLIC, String.class, "marshal");
210 $value = marshal.param(inMemoryType,"value");
211
212 int idx = printMethod.lastIndexOf('.');
213 if(idx<0) {
214 // printMethod specifies a method in the target type
215 // which performs the serialization.
216
217 // RESULT: <value>.<method>()
218 inv = $value.invoke(printMethod);
219 } else {
220 // RESULT: <className>.<method>(<value>)
221 inv = JExpr.direct(printMethod+"(value)");
222 }
223 marshal.body()._return(inv);
224
225 return adapter;
226 }
227 }