mirror of https://github.com/apache/cassandra
74 lines
2.4 KiB
Java
74 lines
2.4 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.cassandra.serializers;
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import org.apache.cassandra.utils.ByteBufferUtil;
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import java.nio.ByteBuffer;
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public class BooleanSerializer implements TypeSerializer<Boolean>
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{
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private static final ByteBuffer TRUE = ByteBuffer.wrap(new byte[] {1});
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private static final ByteBuffer FALSE = ByteBuffer.wrap(new byte[] {0});
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public static final BooleanSerializer instance = new BooleanSerializer();
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public Boolean serialize(ByteBuffer bytes)
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{
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byte value = bytes.get(bytes.position());
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return value != 0;
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}
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public ByteBuffer deserialize(Boolean value)
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{
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return (value == null) ? ByteBufferUtil.EMPTY_BYTE_BUFFER
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: value ? TRUE : FALSE; // false
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}
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public void validate(ByteBuffer bytes) throws MarshalException
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{
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if (bytes.remaining() != 1 && bytes.remaining() != 0)
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throw new MarshalException(String.format("Expected 1 or 0 byte value (%d)", bytes.remaining()));
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}
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public String getString(ByteBuffer bytes)
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{
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if (bytes.remaining() == 0)
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{
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return Boolean.FALSE.toString();
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}
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if (bytes.remaining() != 1)
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{
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throw new MarshalException("A boolean is stored in exactly 1 byte: " + bytes.remaining());
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}
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byte value = bytes.get(bytes.position());
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return value == 0 ? Boolean.FALSE.toString() : Boolean.TRUE.toString();
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}
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public String toString(Boolean value)
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{
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return value == null ? "" : value.toString();
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}
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public Class<Boolean> getType()
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{
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return Boolean.class;
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}
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}
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