Author: elecharny
Date: Tue Jul 31 16:25:28 2012
New Revision: 1367657
URL: http://svn.apache.org/viewvc?rev=1367657&view=rev
Log:
o Added the serializer packahe
o Added the ElementSerializer interface
o Added the IntSerializer
o Added a test for this class
Added:
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/ElementSerializer.java
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/IntSerializer.java
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/Serializer.java
labs/mavibot/trunk/mavibot/src/test/java/org/apache/mavibot/btree/serializer/
labs/mavibot/trunk/mavibot/src/test/java/org/apache/mavibot/btree/serializer/IntSerializerTest.java
Added:
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/ElementSerializer.java
URL:
http://svn.apache.org/viewvc/labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/ElementSerializer.java?rev=1367657&view=auto
==============================================================================
---
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/ElementSerializer.java
(added)
+++
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/ElementSerializer.java
Tue Jul 31 16:25:28 2012
@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.mavibot.btree.serializer;
+
+
+/**
+ * This interface is used by implementations elements serializers.
+ *
+ * @param <T> The type for the element
+ *
+ * @author <a href="mailto:[email protected]";>Mavibot labs Project</a>
+ */
+public interface ElementSerializer<T>
+{
+ /**
+ * Produce the byte[] representation of the element
+ *
+ * @param key The element to serialize
+ * @return The byte[] containing the serialized element
+ */
+ byte[] serialize( T key );
+
+
+ /**
+ * Deserialize an element from a byte[]
+ *
+ * @param in The incoming byte[]
+ * @return The deserialized element
+ */
+ T deserialize( byte[] in );
+}
Added:
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/IntSerializer.java
URL:
http://svn.apache.org/viewvc/labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/IntSerializer.java?rev=1367657&view=auto
==============================================================================
---
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/IntSerializer.java
(added)
+++
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/IntSerializer.java
Tue Jul 31 16:25:28 2012
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.mavibot.btree.serializer;
+
+
+/**
+ * The Integer serializer.
+ *
+ * @author <a href="mailto:[email protected]";>Mavibot labs Project</a>
+ */
+public class IntSerializer implements ElementSerializer<Integer>
+{
+ /**
+ * {@inheritDoc}
+ */
+ public byte[] serialize( Integer element )
+ {
+ byte[] bytes = new byte[4];
+ int value = element.intValue();
+
+ bytes[0] = ( byte ) ( value >>> 24 );
+ bytes[1] = ( byte ) ( value >>> 16 );
+ bytes[2] = ( byte ) ( value >>> 8 );
+ bytes[3] = ( byte ) ( value );
+
+ return bytes;
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ public Integer deserialize( byte[] in )
+ {
+ return ( in[0] << 24 ) +
+ ( ( in[1] & 0xFF ) << 16 ) +
+ ( ( in[2] & 0xFF ) << 8 ) +
+ ( in[3] & 0xFF );
+ }
+}
Added:
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/Serializer.java
URL:
http://svn.apache.org/viewvc/labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/Serializer.java?rev=1367657&view=auto
==============================================================================
---
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/Serializer.java
(added)
+++
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/serializer/Serializer.java
Tue Jul 31 16:25:28 2012
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.mavibot.btree.serializer;
+
+
+/**
+ * This interface is used by implementations of the key and value serializers.
+ *
+ * @param <K> The type for the keys
+ * @param <V> The type for the stored values
+ *
+ * @author <a href="mailto:[email protected]";>Mavibot labs Project</a>
+ */
+public interface Serializer<K, V>
+{
+ /**
+ * Produce the byte[] representation of the key
+ *
+ * @param key The key to serialize
+ * @return The byte[] containing the serialized key
+ */
+ byte[] serializeKey( K key );
+
+
+ /**
+ * Deserialize a key from a byte[]
+ *
+ * @param in The incoming byte[]
+ * @return The deserialized key
+ */
+ K deserializeKey( byte[] in );
+
+
+ /**
+ * Produce the byte[] representation of the value
+ *
+ * @param value The value to serialize
+ * @return The byte[] containing the serialized value
+ */
+ byte[] serializeValue( V value );
+
+
+ /**
+ * Deserialize a value from a byte[]
+ *
+ * @param in The incoming byte[]
+ * @return The deserialized value
+ */
+ V deserializeValue( byte[] in );
+}
Added:
labs/mavibot/trunk/mavibot/src/test/java/org/apache/mavibot/btree/serializer/IntSerializerTest.java
URL:
http://svn.apache.org/viewvc/labs/mavibot/trunk/mavibot/src/test/java/org/apache/mavibot/btree/serializer/IntSerializerTest.java?rev=1367657&view=auto
==============================================================================
---
labs/mavibot/trunk/mavibot/src/test/java/org/apache/mavibot/btree/serializer/IntSerializerTest.java
(added)
+++
labs/mavibot/trunk/mavibot/src/test/java/org/apache/mavibot/btree/serializer/IntSerializerTest.java
Tue Jul 31 16:25:28 2012
@@ -0,0 +1,139 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.mavibot.btree.serializer;
+
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+
+/**
+ * Test the IntSerializer class
+ *
+ * @author <a href="mailto:[email protected]";>Mavibot labs Project</a>
+ */
+public class IntSerializerTest
+{
+ private static IntSerializer serializer = new IntSerializer();
+
+
+ @Test
+ public void testIntSerializer()
+ {
+ int value = 0x00000000;
+ byte[] result = serializer.serialize( value );
+
+ assertEquals( ( byte ) 0x00, result[3] );
+ assertEquals( ( byte ) 0x00, result[2] );
+ assertEquals( ( byte ) 0x00, result[1] );
+ assertEquals( ( byte ) 0x00, result[0] );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ value = 0x000000FF;
+ result = serializer.serialize( value );
+
+ assertEquals( ( byte ) 0xFF, result[3] );
+ assertEquals( ( byte ) 0x00, result[2] );
+ assertEquals( ( byte ) 0x00, result[1] );
+ assertEquals( ( byte ) 0x00, result[0] );
+
+ value = 0x00000100;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0x00, result[3] );
+ assertEquals( ( byte ) 0x01, result[2] );
+ assertEquals( ( byte ) 0x00, result[1] );
+ assertEquals( ( byte ) 0x00, result[0] );
+
+ value = 0x0000FFFF;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0xFF, result[3] );
+ assertEquals( ( byte ) 0xFF, result[2] );
+ assertEquals( ( byte ) 0x00, result[1] );
+ assertEquals( ( byte ) 0x00, result[0] );
+
+ value = 0x00010000;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0x00, result[3] );
+ assertEquals( ( byte ) 0x00, result[2] );
+ assertEquals( ( byte ) 0x01, result[1] );
+ assertEquals( ( byte ) 0x00, result[0] );
+
+ value = 0x00FFFFFF;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0xFF, result[3] );
+ assertEquals( ( byte ) 0xFF, result[2] );
+ assertEquals( ( byte ) 0xFF, result[1] );
+ assertEquals( ( byte ) 0x00, result[0] );
+
+ value = 0x01000000;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0x00, result[3] );
+ assertEquals( ( byte ) 0x00, result[2] );
+ assertEquals( ( byte ) 0x00, result[1] );
+ assertEquals( ( byte ) 0x01, result[0] );
+
+ value = 0x7FFFFFFF;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0x00FF, result[3] );
+ assertEquals( ( byte ) 0x00FF, result[2] );
+ assertEquals( ( byte ) 0x00FF, result[1] );
+ assertEquals( ( byte ) 0x7F, result[0] );
+
+ value = 0x80000000;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0x00, result[3] );
+ assertEquals( ( byte ) 0x00, result[2] );
+ assertEquals( ( byte ) 0x00, result[1] );
+ assertEquals( ( byte ) 0x80, result[0] );
+
+ value = 0xFFFFFFFF;
+ result = serializer.serialize( value );
+
+ assertEquals( value, serializer.deserialize( result ).intValue() );
+
+ assertEquals( ( byte ) 0xFF, result[3] );
+ assertEquals( ( byte ) 0xFF, result[2] );
+ assertEquals( ( byte ) 0xFF, result[1] );
+ assertEquals( ( byte ) 0xFF, result[0] );
+ }
+}
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