001: /*
002: * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
003: *
004: * The Apache Software License, Version 1.1
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution, if
019: * any, must include the following acknowlegement:
020: * "This product includes software developed by the
021: * Caucho Technology (http://www.caucho.com/)."
022: * Alternately, this acknowlegement may appear in the software itself,
023: * if and wherever such third-party acknowlegements normally appear.
024: *
025: * 4. The names "Hessian", "Resin", and "Caucho" must not be used to
026: * endorse or promote products derived from this software without prior
027: * written permission. For written permission, please contact
028: * info@caucho.com.
029: *
030: * 5. Products derived from this software may not be called "Resin"
031: * nor may "Resin" appear in their names without prior written
032: * permission of Caucho Technology.
033: *
034: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
035: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
036: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
037: * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
038: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
039: * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
040: * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
041: * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
042: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
043: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
044: * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
045: *
046: * @author Scott Ferguson
047: */
048:
049: package com.caucho.hessian.io;
050:
051: import java.io.IOException;
052: import java.lang.reflect.Method;
053:
054: /**
055: * Deserializing an enum valued object
056: */
057: public class EnumDeserializer extends AbstractDeserializer {
058: private Class _enumType;
059: private Method _valueOf;
060:
061: public EnumDeserializer(Class cl) {
062: try {
063: _enumType = cl;
064: _valueOf = cl.getMethod("valueOf", new Class[] {
065: Class.class, String.class });
066: } catch (Exception e) {
067: throw new RuntimeException(e);
068: }
069: }
070:
071: public Class getType() {
072: return _enumType;
073: }
074:
075: public Object readMap(AbstractHessianInput in) throws IOException {
076: String name = null;
077:
078: while (!in.isEnd()) {
079: String key = in.readString();
080:
081: if (key.equals("name"))
082: name = in.readString();
083: else
084: in.readObject();
085: }
086:
087: in.readMapEnd();
088:
089: Object obj = create(name);
090:
091: in.addRef(obj);
092:
093: return obj;
094: }
095:
096: public Object readObject(AbstractHessianInput in,
097: String[] fieldNames) throws IOException {
098: String name = null;
099:
100: for (int i = 0; i < fieldNames.length; i++) {
101: if ("name".equals(fieldNames[i]))
102: name = in.readString();
103: else
104: in.readObject();
105: }
106:
107: Object obj = create(name);
108:
109: in.addRef(obj);
110:
111: return obj;
112: }
113:
114: private Object create(String name) throws IOException {
115: if (name == null)
116: throw new IOException(_enumType.getName()
117: + " expects name.");
118:
119: try {
120: return _valueOf.invoke(null, _enumType, name);
121: } catch (Exception e) {
122: throw new IOExceptionWrapper(e);
123: }
124: }
125: }
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