com.github.cassandra.jdbc.provider.datastax.codecs.StringBlobCodec Maven / Gradle / Ivy
/**
* Copyright (C) 2015-2017, Zhichun Wu
*
* 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 com.github.cassandra.jdbc.provider.datastax.codecs;
import com.datastax.driver.core.DataType;
import com.datastax.driver.core.ProtocolVersion;
import com.datastax.driver.core.TypeCodec;
import com.datastax.driver.core.exceptions.InvalidTypeException;
import java.nio.ByteBuffer;
public class StringBlobCodec extends TypeCodec {
public static final StringBlobCodec instance = new StringBlobCodec();
private StringBlobCodec() {
super(DataType.blob(), String.class);
}
@Override
public ByteBuffer serialize(String value, ProtocolVersion protocolVersion) throws InvalidTypeException {
return value == null ? null : ByteBuffer.wrap(value.getBytes());
}
@Override
public String deserialize(ByteBuffer bytes, ProtocolVersion protocolVersion) throws InvalidTypeException {
if (bytes == null || bytes.remaining() == 0)
return null;
return new String(bytes.array());
}
@Override
public String format(String value) {
return value == null ? "NULL" : value;
}
@Override
public String parse(String value) {
if (value == null || value.isEmpty() || value.equalsIgnoreCase("NULL"))
return null;
return value;
}
}