001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.messaging.jmf.codec.std.impl;
023
024 import java.io.IOException;
025 import java.io.OutputStream;
026 import java.math.BigDecimal;
027 import java.math.BigInteger;
028
029 import org.granite.messaging.jmf.DumpContext;
030 import org.granite.messaging.jmf.InputContext;
031 import org.granite.messaging.jmf.OutputContext;
032 import org.granite.messaging.jmf.codec.std.BigDecimalCodec;
033
034 /**
035 * @author Franck WOLFF
036 */
037 public class BigDecimalCodecImpl extends AbstractIntegerStringCodec<BigDecimal> implements BigDecimalCodec {
038
039 public int getObjectType() {
040 return JMF_BIG_DECIMAL;
041 }
042
043 public Class<?> getObjectClass() {
044 return BigDecimal.class;
045 }
046
047 public void encode(OutputContext ctx, BigDecimal v) throws IOException {
048 final OutputStream os = ctx.getOutputStream();
049
050 // Should we compact the magnitude (vs.speed)?
051 // v = v.stripTrailingZeros();
052
053 int scale = v.scale();
054 byte[] magnitude = v.unscaledValue().toByteArray();
055
056 IntegerComponents ics = intComponents(magnitude.length);
057 os.write((ics.length << 6) | JMF_BIG_DECIMAL);
058 writeIntData(ctx, ics);
059
060 os.write(scale);
061 os.write(magnitude);
062 }
063
064 public BigDecimal decode(InputContext ctx, int parameterizedJmfType) throws IOException {
065 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
066
067 if (jmfType != JMF_BIG_DECIMAL)
068 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
069
070 int magnitudeLength = readIntData(ctx, (parameterizedJmfType >> 6) & 0x03, false);
071 int scale = ctx.safeRead();
072
073 byte[] magnitude = new byte[magnitudeLength];
074 ctx.safeReadFully(magnitude);
075
076 BigDecimal v = new BigDecimal(new BigInteger(magnitude), scale);
077
078 if (BigDecimal.ZERO.equals(v))
079 v = BigDecimal.ZERO;
080 else if (BigDecimal.ONE.equals(v))
081 v = BigDecimal.ONE;
082 else if (BigDecimal.TEN.equals(v))
083 v = BigDecimal.TEN;
084
085 return v;
086 }
087
088 public void dump(DumpContext ctx, int parameterizedJmfType) throws IOException {
089 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
090 if (jmfType != JMF_BIG_DECIMAL)
091 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
092 ctx.indentPrintLn(BigDecimal.class.getName() + ": " + decode(ctx, parameterizedJmfType));
093 }
094 }