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package org.apache.camel.spring.xml; |
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import org.apache.camel.spring.CamelContextFactoryBean; |
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import org.apache.camel.spring.EndpointFactoryBean; |
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import org.apache.camel.spring.CamelBeanPostProcessor; |
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import static org.apache.camel.util.ObjectHelper.isNotNullOrBlank; |
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import org.apache.camel.builder.xml.XPathBuilder; |
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import org.springframework.beans.factory.config.BeanDefinition; |
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import org.springframework.beans.factory.config.RuntimeBeanReference; |
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import org.springframework.beans.factory.parsing.BeanComponentDefinition; |
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import org.springframework.beans.factory.support.BeanDefinitionBuilder; |
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import org.springframework.beans.factory.xml.NamespaceHandlerSupport; |
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import org.springframework.beans.factory.xml.ParserContext; |
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import org.springframework.util.xml.DomUtils; |
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import org.w3c.dom.Element; |
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import org.w3c.dom.Node; |
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import org.w3c.dom.NodeList; |
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import java.util.Set; |
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import java.util.HashSet; |
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public class CamelNamespaceHandler extends NamespaceHandlerSupport { |
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protected CamelBeanDefinitionParser routesParser = new CamelBeanDefinitionParser(this); |
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protected BeanDefinitionParser endpointParser = new BeanDefinitionParser(EndpointFactoryBean.class); |
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protected BeanDefinitionParser beanPostProcessorParser = new BeanDefinitionParser(CamelBeanPostProcessor.class); |
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protected Set<String> parserElementNames = new HashSet<String>(); |
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public void init() { |
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registerParser("routes", routesParser); |
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registerParser("routeBuilder", routesParser); |
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registerParser("endpoint", endpointParser); |
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registerParser("camelContext", new BeanDefinitionParser(CamelContextFactoryBean.class) { |
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@Override |
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protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) { |
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super.doParse(element, parserContext, builder); |
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String contextId = element.getAttribute("id"); |
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Element routes = element.getOwnerDocument().createElement("routes"); |
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NodeList list = element.getChildNodes(); |
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for (int size = list.getLength(), i = 0; i < size; i++) { |
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Node child = list.item(i); |
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if (child instanceof Element) { |
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Element childElement = (Element) child; |
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if (child.getLocalName().equals("beanPostProcessor")) { |
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String beanPostProcessorId = contextId + ":beanPostProcessor"; |
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childElement.setAttribute("id", beanPostProcessorId); |
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BeanDefinition definition = beanPostProcessorParser.parse(childElement, parserContext); |
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definition.getPropertyValues().addPropertyValue("camelContext", new RuntimeBeanReference(contextId)); |
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} |
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else { |
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element.removeChild(child); |
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routes.appendChild(child); |
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} |
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} |
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} |
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String routeId = contextId + ":routes"; |
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routes.setAttribute("id", routeId); |
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BeanDefinition definition = routesParser.parse(routes, parserContext); |
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definition.getPropertyValues().addPropertyValue("context", new RuntimeBeanReference(contextId)); |
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parserContext.registerComponent(new BeanComponentDefinition(definition, routeId)); |
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list = routes.getElementsByTagName("endpoint"); |
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for (int size = list.getLength(), i = 0; i < size; i++) { |
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Element node = (Element) list.item(i); |
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definition = endpointParser.parse(node, parserContext); |
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String id = node.getAttribute("id"); |
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if (isNotNullOrBlank(id)) { |
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definition.getPropertyValues().addPropertyValue("context", new RuntimeBeanReference(contextId)); |
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parserContext.registerComponent(new BeanComponentDefinition(definition, id)); |
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} |
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} |
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} |
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}); |
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registerParser("xpath", new BeanDefinitionParser(XPathBuilder.class) { |
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@Override |
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protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) { |
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String xpath = DomUtils.getTextValue(element); |
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builder.addConstructorArg(xpath); |
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super.doParse(element, parserContext, builder); |
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builder.addPropertyValue("namespacesFromDom", element); |
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} |
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}); |
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registerScriptParser("script", null); |
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registerScriptParser("groovy", "groovy"); |
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registerScriptParser("ruby", "jruby"); |
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registerScriptParser("javaScript", "js"); |
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registerScriptParser("python", "python"); |
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registerScriptParser("php", "php"); |
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} |
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protected void registerScriptParser(String elementName, String engineName) { |
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registerParser(elementName, new ScriptDefinitionParser(engineName)); |
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} |
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protected void registerParser(String name, org.springframework.beans.factory.xml.BeanDefinitionParser parser) { |
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parserElementNames.add(name); |
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registerBeanDefinitionParser(name, parser); |
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} |
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public Set<String> getParserElementNames() { |
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return parserElementNames; |
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} |
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} |