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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.BooleanComparator;
27 import org.apache.directory.mavibot.btree.exception.SerializerCreationException;
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35 public class BooleanSerializer extends AbstractElementSerializer<Boolean>
36 {
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40 public BooleanSerializer()
41 {
42 super( new BooleanComparator() );
43 }
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49 public byte[] serialize( Boolean 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( boolean element )
64 {
65 byte[] bytes = new byte[1];
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67 return serialize( bytes, 0, element );
68 }
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79 public static byte[] serialize( byte[] buffer, int start, boolean element )
80 {
81 buffer[start] = element ? ( byte ) 0x01 : ( byte ) 0x00;
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83 return buffer;
84 }
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93 public static Boolean deserialize( byte[] in )
94 {
95 return deserialize( in, 0 );
96 }
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106 public static Boolean deserialize( byte[] in, int start )
107 {
108 if ( ( in == null ) || ( in.length < 1 + start ) )
109 {
110 throw new SerializerCreationException( "Cannot extract a Boolean from a buffer with not enough bytes" );
111 }
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113 return in[start] == 0x01;
114 }
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123 public Boolean fromBytes( byte[] in )
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125 return deserialize( in, 0 );
126 }
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136 public Boolean fromBytes( byte[] in, int start )
137 {
138 if ( ( in == null ) || ( in.length < 1 + start ) )
139 {
140 throw new SerializerCreationException( "Cannot extract a Boolean from a buffer with not enough bytes" );
141 }
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143 return in[start] == 0x01;
144 }
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150 public Boolean deserialize( ByteBuffer buffer ) throws IOException
151 {
152 return buffer.get() != 0x00;
153 }
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159 @Override
160 public Boolean deserialize( BufferHandler bufferHandler ) throws IOException
161 {
162 byte[] in = bufferHandler.read( 1 );
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164 return deserialize( in );
165 }
166 }