| /** |
| * 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.mybatis; |
| |
| import java.util.Iterator; |
| |
| 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.apache.ibatis.session.SqlSession; |
| import org.apache.ibatis.session.SqlSessionFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * @version |
| */ |
| public class MyBatisProducer extends DefaultProducer { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MyBatisProducer.class); |
| private String statement; |
| private MyBatisEndpoint endpoint; |
| |
| public MyBatisProducer(MyBatisEndpoint endpoint) { |
| super(endpoint); |
| this.endpoint = endpoint; |
| this.statement = endpoint.getStatement(); |
| } |
| |
| public void process(Exchange exchange) throws Exception { |
| switch (endpoint.getStatementType()) { |
| case SelectOne: |
| doSelectOne(exchange); break; |
| case SelectList: |
| doSelectList(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 doSelectOne(Exchange exchange) throws Exception { |
| SqlSessionFactory client = endpoint.getSqlSessionFactory(); |
| SqlSession session = client.openSession(); |
| try { |
| Object result; |
| Object in = exchange.getIn().getBody(); |
| if (in != null) { |
| LOG.trace("SelectOne: {} using statement: {}", in, statement); |
| result = session.selectOne(statement, in); |
| } else { |
| LOG.trace("SelectOne using statement: {}", statement); |
| result = session.selectOne(statement); |
| } |
| |
| doProcessResult(exchange, result); |
| } finally { |
| session.close(); |
| } |
| } |
| |
| private void doSelectList(Exchange exchange) throws Exception { |
| SqlSessionFactory client = endpoint.getSqlSessionFactory(); |
| SqlSession session = client.openSession(); |
| try { |
| Object result; |
| Object in = exchange.getIn().getBody(); |
| if (in != null) { |
| LOG.trace("SelectList: {} using statement: {}", in, statement); |
| result = session.selectList(statement, in); |
| } else { |
| LOG.trace("SelectList using statement: {}", statement); |
| result = session.selectList(statement); |
| } |
| |
| doProcessResult(exchange, result); |
| } finally { |
| session.close(); |
| } |
| } |
| |
| private void doInsert(Exchange exchange) throws Exception { |
| SqlSessionFactory client = endpoint.getSqlSessionFactory(); |
| SqlSession session = client.openSession(); |
| try { |
| 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 = session.insert(statement, value); |
| doProcessResult(exchange, result); |
| } |
| } else { |
| LOG.trace("Inserting using statement: {}", statement); |
| result = session.insert(statement); |
| doProcessResult(exchange, result); |
| } |
| } finally { |
| session.commit(); |
| session.close(); |
| } |
| } |
| |
| private void doUpdate(Exchange exchange) throws Exception { |
| SqlSessionFactory client = endpoint.getSqlSessionFactory(); |
| SqlSession session = client.openSession(); |
| try { |
| 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 = session.update(statement, value); |
| doProcessResult(exchange, result); |
| } |
| } else { |
| LOG.trace("Updating using statement: {}", statement); |
| result = session.update(statement); |
| doProcessResult(exchange, result); |
| } |
| } finally { |
| session.commit(); |
| session.close(); |
| } |
| } |
| |
| private void doDelete(Exchange exchange) throws Exception { |
| SqlSessionFactory client = endpoint.getSqlSessionFactory(); |
| SqlSession session = client.openSession(); |
| try { |
| 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 = session.delete(statement, value); |
| doProcessResult(exchange, result); |
| } |
| } else { |
| LOG.trace("Deleting using statement: {}", statement); |
| result = session.delete(statement); |
| doProcessResult(exchange, result); |
| } |
| } finally { |
| session.commit(); |
| session.close(); |
| } |
| } |
| |
| private void doProcessResult(Exchange exchange, Object result) { |
| if (endpoint.getStatementType() == StatementType.SelectList || endpoint.getStatementType() == StatementType.SelectOne) { |
| 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(MyBatisConstants.MYBATIS_RESULT, result); |
| answer.setHeader(MyBatisConstants.MYBATIS_STATEMENT_NAME, statement); |
| } else { |
| Message msg = exchange.getIn(); |
| msg.setHeader(MyBatisConstants.MYBATIS_RESULT, result); |
| msg.setHeader(MyBatisConstants.MYBATIS_STATEMENT_NAME, statement); |
| } |
| } |
| |
| } |