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
021 package org.granite.messaging.jmf.codec.std.impl;
022
023 import java.io.IOException;
024 import java.io.OutputStream;
025 import java.math.BigDecimal;
026 import java.math.BigInteger;
027
028 import org.granite.messaging.jmf.DumpContext;
029 import org.granite.messaging.jmf.InputContext;
030 import org.granite.messaging.jmf.OutputContext;
031 import org.granite.messaging.jmf.codec.std.BigDecimalCodec;
032
033 /**
034 * @author Franck WOLFF
035 */
036 public class BigDecimalCodecImpl extends AbstractIntegerStringCodec<BigDecimal> implements BigDecimalCodec {
037
038 public int getObjectType() {
039 return JMF_BIG_DECIMAL;
040 }
041
042 public Class<?> getObjectClass() {
043 return BigDecimal.class;
044 }
045
046 public void encode(OutputContext ctx, BigDecimal v) throws IOException {
047 final OutputStream os = ctx.getOutputStream();
048
049 int indexOfStoredObject = ctx.indexOfStoredObjects(v);
050 if (indexOfStoredObject >= 0) {
051 IntegerComponents ics = intComponents(indexOfStoredObject);
052 os.write(0x80 | (ics.length << 5) | JMF_BIG_DECIMAL);
053 writeIntData(ctx, ics);
054 }
055 else {
056 ctx.addToStoredObjects(v);
057
058 int scale = v.scale();
059 byte[] magnitude = v.unscaledValue().toByteArray();
060
061 IntegerComponents ics = intComponents(magnitude.length);
062 os.write((ics.length << 5) | JMF_BIG_DECIMAL);
063 writeIntData(ctx, ics);
064
065 os.write(scale);
066 os.write(magnitude);
067 }
068 }
069
070 public BigDecimal decode(InputContext ctx, int parameterizedJmfType) throws IOException {
071 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
072
073 if (jmfType != JMF_BIG_DECIMAL)
074 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
075
076 int indexOrLength = readIntData(ctx, (parameterizedJmfType >> 5) & 0x03, false);
077 if ((parameterizedJmfType & 0x80) != 0)
078 return (BigDecimal)ctx.getSharedObject(indexOrLength);
079
080 int scale = ctx.safeRead();
081
082 byte[] magnitude = new byte[indexOrLength];
083 ctx.safeReadFully(magnitude);
084
085 BigDecimal v = new BigDecimal(new BigInteger(magnitude), scale);
086
087 if (BigDecimal.ZERO.equals(v))
088 v = BigDecimal.ZERO;
089 else if (BigDecimal.ONE.equals(v))
090 v = BigDecimal.ONE;
091 else if (BigDecimal.TEN.equals(v))
092 v = BigDecimal.TEN;
093
094 return v;
095 }
096
097 public void dump(DumpContext ctx, int parameterizedJmfType) throws IOException {
098 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
099 if (jmfType != JMF_BIG_DECIMAL)
100 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
101 ctx.indentPrintLn(BigDecimal.class.getName() + ": " + decode(ctx, parameterizedJmfType));
102 }
103 }