/* * Copyright 2011 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 biz.c24.io.spring.integration.config; import org.springframework.beans.factory.support.BeanDefinitionBuilder; import org.springframework.beans.factory.support.ManagedMap; import org.springframework.beans.factory.xml.ParserContext; import org.springframework.integration.config.xml.AbstractTransformerParser; import org.springframework.integration.config.xml.IntegrationNamespaceUtils; import org.springframework.util.StringUtils; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; /** * Parser for <xpath-header-enricher> elements. * * @author Mark Fisher * @since 2.0 */ public class XPathHeaderEnricherParser extends AbstractTransformerParser { @Override protected final String getTransformerClassName() { return "biz.c24.io.spring.integration.transformer.C24XPathHeaderEnricher"; } @Override protected void parseTransformer(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) { ManagedMap<String, Object> headers = new ManagedMap<String, Object>(); this.processHeaders(element, headers, parserContext); builder.addConstructorArgValue(headers); IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, "default-overwrite"); IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, "should-skip-nulls"); } protected void processHeaders(Element element, ManagedMap<String, Object> headers, ParserContext parserContext) { Object source = parserContext.extractSource(element); NodeList childNodes = element.getChildNodes(); for (int i = 0; i < childNodes.getLength(); i++) { Node node = childNodes.item(i); if (node.getNodeType() == Node.ELEMENT_NODE) { Element headerElement = (Element) node; String elementName = node.getLocalName(); if ("header".equals(elementName)) { BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition( "biz.c24.io.spring.integration.transformer.C24XPathHeaderEnricher$XPathExpressionEvaluatingHeaderValueMessageProcessor"); String expressionString = headerElement.getAttribute("xpath-statement"); String expressionRef = headerElement.getAttribute("xpath-statement-ref"); boolean isExpressionString = StringUtils.hasText(expressionString); boolean isExpressionRef = StringUtils.hasText(expressionRef); if (!(isExpressionString ^ isExpressionRef)) { parserContext.getReaderContext().error( "Exactly one of the 'xpath-statement' or 'xpath-statement-ref' attributes is required.", source); } if (isExpressionString) { builder.addConstructorArgValue(expressionString); } else { builder.addConstructorArgReference(expressionRef); } IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, headerElement, "evaluation-type"); IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, headerElement, "overwrite"); String headerName = headerElement.getAttribute("name"); headers.put(headerName, builder.getBeanDefinition()); } } } } }