From 132aa8a77685ec92bc90c03f987650d275a7b639 Mon Sep 17 00:00:00 2001 From: lresende Date: Mon, 30 Sep 2013 06:59:11 +0000 Subject: 2.0.1 RC1 release tag git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1527464 13f79535-47bb-0310-9956-ffa450edef68 --- .../web/runtime/jsp/ReferenceTag.java | 128 +++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 sca-java-2.x/tags/2.0.1-RC1/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java') diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java new file mode 100644 index 0000000000..5ba08ab56b --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java @@ -0,0 +1,128 @@ +/* + * 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.tuscany.sca.implementation.web.runtime.jsp; + +import javax.servlet.ServletContext; +import javax.servlet.jsp.JspException; +import javax.servlet.jsp.PageContext; +import javax.servlet.jsp.tagext.TagSupport; + +import org.apache.tuscany.sca.assembly.ComponentReference; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.oasisopen.sca.ServiceReference; + +/** + * Tag to handle SCA references + * + * + * @version $Rev$ $Date$ + */ +public class ReferenceTag extends TagSupport { + private static final long serialVersionUID = 1L; + + protected String name; + protected String type; + protected Integer scope = PageContext.PAGE_SCOPE; + + @Override + public int doStartTag() throws JspException { + return SKIP_BODY; + } + + @Override + public int doEndTag() throws JspException { + + ServletContext servletContext = pageContext.getServletContext(); + RuntimeComponent component = (RuntimeComponent)servletContext.getAttribute("org.apache.tuscany.sca.implementation.web.RuntimeComponent"); + if (component == null) { + throw new JspException("No Web component found. Is there an missing?"); + } + + Class typeClass; + try { + typeClass = Class.forName(type, true, Thread.currentThread().getContextClassLoader()); + } catch (ClassNotFoundException e) { + throw new JspException("Reference '" + name + "' type class not found: " + type); + } + + try { + setInterfaceContract(component, typeClass); + } catch (InvalidInterfaceException e) { + throw new JspException("Exception creating interface", e); + } + + ServiceReference sr = component.getComponentContext().getServiceReference(typeClass, name); + if (sr == null) { + throw new JspException("Reference '" + name + "' undefined"); + } + + pageContext.setAttribute(name, sr.getService(), scope); + + return EVAL_PAGE; + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public Integer getScope() { + return scope; + } + + public void setScope(Integer scope) { + this.scope = scope; + } + + public String getType() { + return type; + } + + public void setType(String type) { + this.type = type; + } + + /** + * Implementation.web components currently don't use introspection to find the component type so unless an interface + * is explicitly defined on a refererence with then the InterfaceContract will be null. This will + * check for that and set the InterfaceContract from the Java class of the JSP tag. + */ + private void setInterfaceContract(RuntimeComponent component, Class typeClass) throws InvalidInterfaceException { + ComponentReference ref = component.getReference(name); + if (ref.getInterfaceContract() == null) { + ExtensionPointRegistry epr = component.getComponentContext().getExtensionPointRegistry(); + FactoryExtensionPoint fep = epr.getExtensionPoint(FactoryExtensionPoint.class); + JavaInterfaceFactory jif = fep.getFactory(JavaInterfaceFactory.class); + JavaInterface javaIface = jif.createJavaInterface(typeClass); + InterfaceContract interfaceContract = jif.createJavaInterfaceContract(); + interfaceContract.setInterface(javaIface); + ref.setInterfaceContract(interfaceContract); + } + } +} -- cgit v1.2.3