| /* |
| * 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.cassandra.serializers; |
| |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| import java.nio.ByteBuffer; |
| |
| public class DoubleSerializer implements TypeSerializer<Double> |
| { |
| public static final DoubleSerializer instance = new DoubleSerializer(); |
| |
| public Double deserialize(ByteBuffer bytes) |
| { |
| if (bytes.remaining() == 0) |
| return null; |
| return ByteBufferUtil.toDouble(bytes); |
| } |
| |
| public ByteBuffer serialize(Double value) |
| { |
| return (value == null) ? ByteBufferUtil.EMPTY_BYTE_BUFFER : ByteBufferUtil.bytes(value); |
| } |
| |
| public void validate(ByteBuffer bytes) throws MarshalException |
| { |
| if (bytes.remaining() != 8 && bytes.remaining() != 0) |
| throw new MarshalException(String.format("Expected 8 or 0 byte value for a double (%d)", bytes.remaining())); |
| } |
| |
| public String toString(Double value) |
| { |
| return value == null ? "" : value.toString(); |
| } |
| |
| public Class<Double> getType() |
| { |
| return Double.class; |
| } |
| } |