org.springframework.data.cassandra.core.cql.converter.ResultSetToByteBufferConverter Maven / Gradle / Ivy
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Cassandra support for Spring Data
/*
* Copyright 2017-2018 the original author or authors.
*
* Licensed 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.springframework.data.cassandra.core.cql.converter;
import java.nio.ByteBuffer;
import org.springframework.core.convert.converter.Converter;
import com.datastax.driver.core.ResultSet;
/**
* {@link Converter} from {@link ResultSet} to a single {@link ByteBuffer} value.
*
* @author Mark Paluch
*/
public class ResultSetToByteBufferConverter extends AbstractResultSetConverter {
public static final ResultSetToByteBufferConverter INSTANCE = new ResultSetToByteBufferConverter();
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.cql.converter.AbstractResultSetConverter#doConvertSingleValue(java.lang.Object)
*/
@Override
protected ByteBuffer doConvertSingleValue(Object object) {
if (!(object instanceof ByteBuffer)) {
throw new IllegalArgumentException(
String.format("Cannot convert %s to desired type [%s]", "value", getType().getName()));
}
return (ByteBuffer) object;
}
/* (non-Javadoc)
* @see org.springframework.data.cassandra.core.cql.converter.AbstractResultSetConverter#getType()
*/
@Override
protected Class getType() {
return ByteBuffer.class;
}
}