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.util.*;
053:
054: /**
055: * Deserializing a JDK 1.2 Collection.
056: */
057: public class CollectionDeserializer extends AbstractListDeserializer {
058: private Class _type;
059:
060: public CollectionDeserializer(Class type) {
061: _type = type;
062: }
063:
064: public Class getType() {
065: return _type;
066: }
067:
068: public Object readList(AbstractHessianInput in, int length)
069: throws IOException {
070: Collection list = createList();
071:
072: in.addRef(list);
073:
074: while (!in.isEnd())
075: list.add(in.readObject());
076:
077: in.readEnd();
078:
079: return list;
080: }
081:
082: public Object readLengthList(AbstractHessianInput in, int length)
083: throws IOException {
084: Collection list = createList();
085:
086: in.addRef(list);
087:
088: for (; length > 0; length--)
089: list.add(in.readObject());
090:
091: return list;
092: }
093:
094: private Collection createList() throws IOException {
095: Collection list = null;
096:
097: if (_type == null)
098: list = new ArrayList();
099: else if (!_type.isInterface()) {
100: try {
101: list = (Collection) _type.newInstance();
102: } catch (Exception e) {
103: }
104: }
105:
106: if (list != null) {
107: } else if (SortedSet.class.isAssignableFrom(_type))
108: list = new TreeSet();
109: else if (Set.class.isAssignableFrom(_type))
110: list = new HashSet();
111: else if (List.class.isAssignableFrom(_type))
112: list = new ArrayList();
113: else if (Collection.class.isAssignableFrom(_type))
114: list = new ArrayList();
115: else {
116: try {
117: list = (Collection) _type.newInstance();
118: } catch (Exception e) {
119: throw new IOExceptionWrapper(e);
120: }
121: }
122:
123: return list;
124: }
125: }
|