/*
* Copyright 2002-2017 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.integration.jdbc.store.channel;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.core.serializer.support.DeserializingConverter;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.support.lob.LobHandler;
import org.springframework.messaging.Message;
/**
* Convenience class to be used to unpack a {@link Message} from a result set
* row. Uses column named in the result set to extract the required data, so
* that select clause ordering is unimportant.
*
* @author Gunnar Hillert
* @since 2.2
*
*/
public class MessageRowMapper implements RowMapper<Message<?>> {
private final DeserializingConverter deserializer;
private final LobHandler lobHandler;
public MessageRowMapper(DeserializingConverter deserializer, LobHandler lobHandler) {
this.deserializer = deserializer;
this.lobHandler = lobHandler;
}
public Message<?> mapRow(ResultSet rs, int rowNum) throws SQLException {
return (Message<?>) this.deserializer.convert(this.lobHandler.getBlobAsBytes(rs, "MESSAGE_BYTES"));
}
}