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/**
* 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.camel.component.ibatis;
import java.util.Iterator;
import com.ibatis.sqlmap.client.SqlMapClient;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.impl.DefaultProducer;
import org.apache.camel.util.ExchangeHelper;
import org.apache.camel.util.ObjectHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @version
*/
public class IBatisProducer extends DefaultProducer {
private static final Logger LOG = LoggerFactory.getLogger(IBatisProducer.class);
private String statement;
private IBatisEndpoint endpoint;
public IBatisProducer(IBatisEndpoint endpoint) {
super(endpoint);
this.endpoint = endpoint;
this.statement = endpoint.getStatement();
}
public void process(Exchange exchange) throws Exception {
switch (endpoint.getStatementType()) {
case QueryForObject:
doQueryForObject(exchange); break;
case QueryForList:
doQueryForList(exchange); break;
case Insert:
doInsert(exchange); break;
case Update:
doUpdate(exchange); break;
case Delete:
doDelete(exchange); break;
default:
throw new IllegalArgumentException("Unsupported statementType: " + endpoint.getStatementType());
}
}
private void doQueryForObject(Exchange exchange) throws Exception {
SqlMapClient client = endpoint.getSqlMapClient();
Object result;
Object in = exchange.getIn().getBody();
if (in != null) {
LOG.trace("QueryForObject: {} using statement: {}", in, statement);
result = client.queryForObject(statement, in);
} else {
LOG.trace("QueryForObject using statement: {}", statement);
result = client.queryForObject(statement);
}
doProcessResult(exchange, result);
}
private void doQueryForList(Exchange exchange) throws Exception {
SqlMapClient client = endpoint.getSqlMapClient();
Object result;
Object in = exchange.getIn().getBody();
if (in != null) {
LOG.trace("QueryForList: {} using statement: {}", in, statement);
result = client.queryForList(statement, in);
} else {
LOG.trace("QueryForList using statement: {}", statement);
result = client.queryForList(statement);
}
doProcessResult(exchange, result);
}
private void doInsert(Exchange exchange) throws Exception {
SqlMapClient client = endpoint.getSqlMapClient();
Object result;
Object in = exchange.getIn().getBody();
if (in != null) {
// lets handle arrays or collections of objects
Iterator iter = ObjectHelper.createIterator(in);
while (iter.hasNext()) {
Object value = iter.next();
LOG.trace("Inserting: {} using statement: {}", value, statement);
result = client.insert(statement, value);
doProcessResult(exchange, result);
}
} else {
LOG.trace("Inserting using statement: {}", statement);
result = client.insert(statement);
doProcessResult(exchange, result);
}
}
private void doUpdate(Exchange exchange) throws Exception {
SqlMapClient client = endpoint.getSqlMapClient();
Object result;
Object in = exchange.getIn().getBody();
if (in != null) {
// lets handle arrays or collections of objects
Iterator iter = ObjectHelper.createIterator(in);
while (iter.hasNext()) {
Object value = iter.next();
LOG.trace("Updating: {} using statement: {}", value, statement);
result = client.update(statement, value);
doProcessResult(exchange, result);
}
} else {
LOG.trace("Updating using statement: {}", statement);
result = client.update(statement);
doProcessResult(exchange, result);
}
}
private void doDelete(Exchange exchange) throws Exception {
SqlMapClient client = endpoint.getSqlMapClient();
Object result;
Object in = exchange.getIn().getBody();
if (in != null) {
// lets handle arrays or collections of objects
Iterator iter = ObjectHelper.createIterator(in);
while (iter.hasNext()) {
Object value = iter.next();
LOG.trace("Deleting: {} using statement: {}", value, statement);
result = client.delete(statement, value);
doProcessResult(exchange, result);
}
} else {
LOG.trace("Deleting using statement: {}", statement);
result = client.delete(statement);
doProcessResult(exchange, result);
}
}
private void doProcessResult(Exchange exchange, Object result) {
if (endpoint.getStatementType() == StatementType.QueryForList || endpoint.getStatementType() == StatementType.QueryForObject) {
Message answer = exchange.getIn();
if (ExchangeHelper.isOutCapable(exchange)) {
answer = exchange.getOut();
// preserve headers
answer.getHeaders().putAll(exchange.getIn().getHeaders());
}
// set the result as body for insert
answer.setBody(result);
answer.setHeader(IBatisConstants.IBATIS_RESULT, result);
answer.setHeader(IBatisConstants.IBATIS_STATEMENT_NAME, statement);
} else {
Message msg = exchange.getIn();
msg.setHeader(IBatisConstants.IBATIS_RESULT, result);
msg.setHeader(IBatisConstants.IBATIS_STATEMENT_NAME, statement);
}
}
}
