| /** |
| * 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.dozer; |
| |
| import java.io.InputStream; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.camel.Component; |
| import org.apache.camel.Consumer; |
| import org.apache.camel.Processor; |
| import org.apache.camel.Producer; |
| import org.apache.camel.converter.dozer.DozerTypeConverterLoader; |
| import org.apache.camel.impl.DefaultEndpoint; |
| import org.apache.camel.spi.UriEndpoint; |
| import org.apache.camel.spi.UriParam; |
| import org.apache.camel.util.IOHelper; |
| import org.apache.camel.util.ResourceHelper; |
| import org.dozer.CustomConverter; |
| import org.dozer.DozerBeanMapper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The dozer component provides the ability to map between Java beans using the Dozer mapping library. |
| */ |
| @UriEndpoint(scheme = "dozer", title = "Dozer", syntax = "dozer:name", producerOnly = true, label = "transformation") |
| public class DozerEndpoint extends DefaultEndpoint { |
| private static final Logger LOG = LoggerFactory.getLogger(DozerEndpoint.class); |
| |
| // IDs for built-in custom converters used with the Dozer component |
| private static final String CUSTOM_MAPPING_ID = "_customMapping"; |
| private static final String VARIABLE_MAPPING_ID = "_variableMapping"; |
| private static final String EXPRESSION_MAPPING_ID = "_expressionMapping"; |
| |
| private DozerBeanMapper mapper; |
| private VariableMapper variableMapper; |
| private CustomMapper customMapper; |
| private ExpressionMapper expressionMapper; |
| |
| @UriParam |
| private DozerConfiguration configuration; |
| |
| public DozerEndpoint(String endpointUri, Component component, DozerConfiguration configuration) throws Exception { |
| super(endpointUri, component); |
| this.configuration = configuration; |
| variableMapper = new VariableMapper(); |
| customMapper = new CustomMapper(getCamelContext().getClassResolver()); |
| expressionMapper = new ExpressionMapper(); |
| } |
| |
| @Override |
| public Producer createProducer() throws Exception { |
| return new DozerProducer(this); |
| } |
| |
| @Override |
| public Consumer createConsumer(Processor processor) throws Exception { |
| throw new UnsupportedOperationException("Consumer not supported for Dozer endpoints"); |
| } |
| |
| @Override |
| public boolean isSingleton() { |
| return true; |
| } |
| |
| public DozerBeanMapper getMapper() throws Exception { |
| return mapper; |
| } |
| |
| public DozerConfiguration getConfiguration() { |
| return configuration; |
| } |
| |
| public void setConfiguration(DozerConfiguration configuration) { |
| this.configuration = configuration; |
| } |
| |
| CustomMapper getCustomMapper() { |
| return customMapper; |
| } |
| |
| VariableMapper getVariableMapper() { |
| return variableMapper; |
| } |
| |
| ExpressionMapper getExpressionMapper() { |
| return expressionMapper; |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| super.doStart(); |
| |
| if (mapper == null) { |
| if (configuration.getMappingConfiguration() != null) { |
| mapper = DozerTypeConverterLoader.createDozerBeanMapper( |
| configuration.getMappingConfiguration()); |
| } else { |
| mapper = createDozerBeanMapper(); |
| } |
| configureMapper(mapper); |
| } |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| super.doStop(); |
| // noop |
| } |
| |
| private DozerBeanMapper createDozerBeanMapper() throws Exception { |
| DozerBeanMapper answer = DozerComponent.createDozerBeanMapper(Collections.<String>emptyList()); |
| InputStream mapStream = null; |
| try { |
| LOG.info("Loading Dozer mapping file {}.", configuration.getMappingFile()); |
| // create the mapper instance and add the mapping file |
| mapStream = ResourceHelper.resolveMandatoryResourceAsInputStream(getCamelContext(), configuration.getMappingFile()); |
| answer.addMapping(mapStream); |
| } finally { |
| IOHelper.close(mapStream); |
| } |
| return answer; |
| } |
| |
| private void configureMapper(DozerBeanMapper mapper) throws Exception { |
| // add our built-in converters |
| Map<String, CustomConverter> converters = new HashMap<String, CustomConverter>(); |
| converters.put(CUSTOM_MAPPING_ID, customMapper); |
| converters.put(VARIABLE_MAPPING_ID, variableMapper); |
| converters.put(EXPRESSION_MAPPING_ID, expressionMapper); |
| converters.putAll(mapper.getCustomConvertersWithId()); |
| mapper.setCustomConvertersWithId(converters); |
| } |
| } |