001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2013 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.messaging.jmf.codec.std.impl;
022
023import java.io.IOException;
024import java.io.OutputStream;
025import java.util.ArrayList;
026
027import org.granite.messaging.jmf.CodecRegistry;
028import org.granite.messaging.jmf.DumpContext;
029import org.granite.messaging.jmf.InputContext;
030import org.granite.messaging.jmf.JMFEncodingException;
031import org.granite.messaging.jmf.OutputContext;
032import org.granite.messaging.jmf.codec.StandardCodec;
033import org.granite.messaging.jmf.codec.std.ArrayListCodec;
034
035/**
036 * @author Franck WOLFF
037 */
038public class ArrayListCodecImpl extends AbstractIntegerStringCodec<ArrayList<?>> implements ArrayListCodec {
039
040        public int getObjectType() {
041                return JMF_ARRAY_LIST;
042        }
043
044        public Class<?> getObjectClass() {
045                return ArrayList.class;
046        }
047
048        public void encode(OutputContext ctx, ArrayList<?> v) throws IOException {
049                final OutputStream os = ctx.getOutputStream();
050                
051                int indexOfStoredObject = ctx.indexOfStoredObjects(v);
052                if (indexOfStoredObject >= 0) {
053                        IntegerComponents ics = intComponents(indexOfStoredObject);
054                        os.write(0x80 | (ics.length << 5) | JMF_ARRAY_LIST);
055                        writeIntData(ctx, ics);
056                }
057                else {
058                        ctx.addToStoredObjects(v);
059                        
060                        Object[] snapshot = v.toArray();
061                        
062                        IntegerComponents ics = intComponents(snapshot.length);
063                        os.write((ics.length << 5) | JMF_ARRAY_LIST);
064                        writeIntData(ctx, ics);
065
066                        for (Object element : snapshot)
067                                ctx.writeObject(element);
068                }
069        }
070
071        public ArrayList<?> decode(InputContext ctx, int parameterizedJmfType) throws IOException, ClassNotFoundException {
072                int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
073                
074                if (jmfType != JMF_ARRAY_LIST)
075                        throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
076                
077                int indexOrLength = readIntData(ctx, (parameterizedJmfType >> 5) & 0x03, false);
078                if ((parameterizedJmfType & 0x80) != 0)
079                        return (ArrayList<?>)ctx.getSharedObject(indexOrLength);
080
081                ArrayList<Object> v = new ArrayList<Object>(indexOrLength);
082                ctx.addSharedObject(v);
083                
084                for (int index = 0; index < indexOrLength; index++)
085                        v.add(index, ctx.readObject());
086                                
087                return v;
088        }
089
090        public void dump(DumpContext ctx, int parameterizedJmfType) throws IOException {
091                final CodecRegistry codecRegistry = ctx.getSharedContext().getCodecRegistry();
092                
093                int jmfType = codecRegistry.extractJmfType(parameterizedJmfType);
094                
095                if (jmfType != JMF_ARRAY_LIST)
096                        throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
097                
098                int indexOrLength = readIntData(ctx, (parameterizedJmfType >> 5) & 0x03, false);
099                if ((parameterizedJmfType & 0x80) != 0) {
100                        String v = (String)ctx.getSharedObject(indexOrLength);
101                        ctx.indentPrintLn("<" + v + "@" + indexOrLength + ">");
102                        return;
103                }
104
105                String v = ArrayList.class.getName() + "[" + indexOrLength + "]";
106                int indexOfStoredObject = ctx.addSharedObject(v);
107                ctx.indentPrintLn(v + "@" + indexOfStoredObject + " {");
108                ctx.incrIndent(1);
109                
110                for (int index = 0; index < indexOrLength; index++) {
111                        parameterizedJmfType = ctx.safeRead();
112                        jmfType = codecRegistry.extractJmfType(parameterizedJmfType);
113                        StandardCodec<?> codec = codecRegistry.getCodec(jmfType);
114                        
115                        if (codec == null)
116                                throw new JMFEncodingException("No codec for JMF type: " + jmfType);
117                        
118                        codec.dump(ctx, parameterizedJmfType);
119
120                }
121                        
122                ctx.incrIndent(-1);
123                ctx.indentPrintLn("}");
124        }
125}