| /* |
| * 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.felix.ipojo.manipulator.metadata.annotation.visitor; |
| |
| import org.apache.felix.ipojo.manipulator.Reporter; |
| import org.apache.felix.ipojo.manipulator.metadata.annotation.ComponentWorkbench; |
| import org.apache.felix.ipojo.metadata.Attribute; |
| import org.apache.felix.ipojo.metadata.Element; |
| import org.objectweb.asm.AnnotationVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| /** |
| * Parse the @Component annotation. |
| * @see org.apache.felix.ipojo.annotations.Component |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ComponentVisitor extends AnnotationVisitor { |
| |
| private Reporter reporter; |
| |
| /** |
| * Element 'properties'. |
| */ |
| private Element m_props = new Element("properties", ""); |
| |
| private Element component = new Element("component", ""); |
| |
| private ComponentWorkbench workbench; |
| |
| public ComponentVisitor(ComponentWorkbench workbench, Reporter reporter) { |
| super(Opcodes.ASM5); |
| this.workbench = workbench; |
| this.reporter = reporter; |
| } |
| |
| /** |
| * Visit @Component annotation attribute. |
| * @param name attribute name |
| * @param value attribute value |
| * @see org.objectweb.asm.AnnotationVisitor#visit(java.lang.String, java.lang.Object) |
| */ |
| public void visit(String name, Object value) { |
| if (name.equals("public_factory") || name.equals("publicFactory")) { |
| // public_factory is deprecated, but must sill be supported |
| String factory = value.toString(); |
| if (factory.equalsIgnoreCase("false")) { |
| component.addAttribute(new Attribute("public", "false")); |
| } else { |
| component.addAttribute(new Attribute("public", "true")); |
| } |
| return; |
| } |
| |
| if (name.equals("name")) { |
| component.addAttribute(new Attribute("name", value.toString())); |
| return; |
| } |
| if (name.equals("immediate")) { |
| component.addAttribute(new Attribute("immediate", value.toString())); |
| return; |
| } |
| if (name.equals("architecture")) { |
| component.addAttribute(new Attribute("architecture", value.toString())); |
| return; |
| } |
| if (name.equals("propagation") && (value != null)) { |
| if (arePropertiesEmpty()) { |
| initComponentProperties(); |
| } |
| m_props.addAttribute(new Attribute("propagation", value.toString())); |
| return; |
| } |
| if (name.equals("managedservice") && (value != null)) { |
| if (arePropertiesEmpty()) { |
| initComponentProperties(); |
| } |
| m_props.addAttribute(new Attribute("pid", value.toString())); |
| return; |
| } |
| if ((name.equals("factory_method") || name.equals("factoryMethod")) && (value != null)) { |
| // factory_method is deprecated, but must still be supported. |
| component.addAttribute(new Attribute("factory-method", value.toString())); |
| return; |
| } |
| if (name.equals("version") && (value != null)) { |
| component.addAttribute(new Attribute("version", value.toString())); |
| } |
| } |
| |
| private boolean arePropertiesEmpty() { |
| return m_props.getElements().length == 0; |
| } |
| |
| private void initComponentProperties() { |
| workbench.getElements().put(m_props, null); |
| workbench.getIds().put("properties", m_props); |
| } |
| |
| /** |
| * End of the visit. |
| * Append to the "component" element computed attribute. |
| * @see org.objectweb.asm.AnnotationVisitor#visitEnd() |
| */ |
| public void visitEnd() { |
| |
| String classname = workbench.getType().getClassName(); |
| |
| if (component.getAttribute("name") == null) { |
| component.addAttribute(new Attribute("name", classname)); |
| } |
| |
| component.addAttribute(new Attribute("classname", classname)); |
| |
| if (workbench.getRoot() == null) { |
| workbench.setRoot(component); |
| } else { |
| // Error case: 2 component type's annotations (@Component and @Handler for example) on the same class |
| reporter.error("Multiple 'component type' annotations on the class '{%s}'.", classname); |
| reporter.warn("@Component will be ignored."); |
| } |
| } |
| } |