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18 package org.apache.hadoop.hbase.codec;
19
20 import java.io.IOException;
21 import java.io.InputStream;
22 import java.io.OutputStream;
23
24 import org.apache.commons.io.IOUtils;
25 import org.apache.hadoop.hbase.Cell;
26 import org.apache.hadoop.hbase.CellUtil;
27 import org.apache.hadoop.hbase.util.Bytes;
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34 public class CellCodec implements Codec {
35 static class CellEncoder extends BaseEncoder {
36 CellEncoder(final OutputStream out) {
37 super(out);
38 }
39
40 @Override
41 public void write(Cell cell) throws IOException {
42 checkFlushed();
43
44 write(cell.getRowArray(), cell.getRowOffset(), cell.getRowLength());
45
46 write(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength());
47
48 write(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength());
49
50 this.out.write(Bytes.toBytes(cell.getTimestamp()));
51
52 this.out.write(cell.getTypeByte());
53
54 write(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());
55 }
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64 private void write(final byte [] bytes, final int offset, final int length)
65 throws IOException {
66 this.out.write(Bytes.toBytes(length));
67 this.out.write(bytes, offset, length);
68 }
69 }
70
71 static class CellDecoder extends BaseDecoder {
72 public CellDecoder(final InputStream in) {
73 super(in);
74 }
75
76 protected Cell parseCell() throws IOException {
77 byte [] row = readByteArray(this.in);
78 byte [] family = readByteArray(in);
79 byte [] qualifier = readByteArray(in);
80 byte [] longArray = new byte[Bytes.SIZEOF_LONG];
81 IOUtils.readFully(this.in, longArray);
82 long timestamp = Bytes.toLong(longArray);
83 byte type = (byte) this.in.read();
84 byte [] value = readByteArray(in);
85 return CellUtil.createCell(row, family, qualifier, timestamp, type, value);
86 }
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92 private byte [] readByteArray(final InputStream in) throws IOException {
93 byte [] intArray = new byte[Bytes.SIZEOF_INT];
94 IOUtils.readFully(in, intArray);
95 int length = Bytes.toInt(intArray);
96 byte [] bytes = new byte [length];
97 IOUtils.readFully(in, bytes);
98 return bytes;
99 }
100 }
101
102 @Override
103 public Decoder getDecoder(InputStream is) {
104 return new CellDecoder(is);
105 }
106
107 @Override
108 public Encoder getEncoder(OutputStream os) {
109 return new CellEncoder(os);
110 }
111 }