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20 package org.apache.directory.mavibot.btree.serializer;
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23 import java.io.IOException;
24 import java.nio.ByteBuffer;
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26 import org.apache.directory.mavibot.btree.comparator.ByteComparator;
27 import org.apache.directory.mavibot.btree.exception.SerializerCreationException;
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35 public class ByteSerializer extends AbstractElementSerializer<Byte>
36 {
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40 public ByteSerializer()
41 {
42 super( new ByteComparator() );
43 }
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49 public byte[] serialize( Byte element )
50 {
51 byte[] bytes = new byte[1];
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53 return serialize( bytes, 0, element );
54 }
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63 public static byte[] serialize( byte value )
64 {
65 byte[] bytes = new byte[1];
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67 return serialize( bytes, 0, value );
68 }
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79 public static byte[] serialize( byte[] buffer, int start, byte value )
80 {
81 buffer[start] = value;
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83 return buffer;
84 }
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92 public static Byte deserialize( byte[] in )
93 {
94 return deserialize( in, 0 );
95 }
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104 public static Byte deserialize( byte[] in, int start )
105 {
106 if ( ( in == null ) || ( in.length < 1 + start ) )
107 {
108 throw new SerializerCreationException( "Cannot extract a Byte from a buffer with not enough bytes" );
109 }
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111 return in[start];
112 }
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120 public Byte fromBytes( byte[] in )
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122 return deserialize( in, 0 );
123 }
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132 public Byte fromBytes( byte[] in, int start )
133 {
134 if ( ( in == null ) || ( in.length < 1 + start ) )
135 {
136 throw new SerializerCreationException( "Cannot extract a Byte from a buffer with not enough bytes" );
137 }
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139 return in[start];
140 }
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146 public Byte deserialize( ByteBuffer buffer ) throws IOException
147 {
148 return buffer.get();
149 }
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155 public Byte deserialize( BufferHandler bufferHandler ) throws IOException
156 {
157 byte[] in = bufferHandler.read( 1 );
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159 return deserialize( in );
160 }
161 }