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Diffstat (limited to 'branches/sca-java-0.99/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java')
-rw-r--r-- | branches/sca-java-0.99/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/branches/sca-java-0.99/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java b/branches/sca-java-0.99/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java new file mode 100644 index 0000000000..6700c5a8c2 --- /dev/null +++ b/branches/sca-java-0.99/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java @@ -0,0 +1,168 @@ +/* + * 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.java.introspect.impl; + +import java.lang.annotation.Annotation; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.util.Collection; +import java.util.Map; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.assembly.Property; +import org.apache.tuscany.sca.implementation.java.IntrospectionException; +import org.apache.tuscany.sca.implementation.java.JavaImplementation; +import org.apache.tuscany.sca.implementation.java.impl.JavaElementImpl; +import org.apache.tuscany.sca.implementation.java.impl.JavaParameterImpl; +import org.apache.tuscany.sca.interfacedef.util.JavaXMLMapper; + +/** + * Base class for ImplementationProcessors that handle annotations that add + * Properties. + * + * @version $Rev$ $Date$ + */ +public abstract class AbstractPropertyProcessor<A extends Annotation> extends BaseJavaClassVisitor { + private final Class<A> annotationClass; + + protected AbstractPropertyProcessor(AssemblyFactory assemblyFactory, Class<A> annotationClass) { + super(assemblyFactory); + this.annotationClass = annotationClass; + } + + @Override + public void visitMethod(Method method, JavaImplementation type) throws IntrospectionException { + A annotation = method.getAnnotation(annotationClass); + if (annotation == null) { + return; + } + + if (!Void.TYPE.equals(method.getReturnType())) { + throw new IllegalPropertyException("Method does not have void return type", method); + } + Class[] paramTypes = method.getParameterTypes(); + if (paramTypes.length != 1) { + throw new IllegalPropertyException("Method must have a single parameter", method); + } + + String name = getName(annotation); + if (name == null || "".equals(name)) { + name = method.getName(); + if (name.startsWith("set")) { + name = JavaIntrospectionHelper.toPropertyName(method.getName()); + } + } + + Map<String, JavaElementImpl> properties = type.getPropertyMembers(); + if (properties.containsKey(name)) { + throw new DuplicatePropertyException(name); + } + + JavaElementImpl element = new JavaElementImpl(method, 0); + Property property = createProperty(name, element); + + // add databinding available as annotations, as extensions + + initProperty(property, annotation); + type.getProperties().add(property); + properties.put(name, element); + } + + @Override + public void visitField(Field field, JavaImplementation type) throws IntrospectionException { + + A annotation = field.getAnnotation(annotationClass); + if (annotation == null) { + return; + } + + String name = getName(annotation); + if (name == null) { + name = ""; + } + if ("".equals(name) || name.equals(field.getType().getName())) { + name = field.getName(); + } + + Map<String, JavaElementImpl> properties = type.getPropertyMembers(); + if (properties.containsKey(name)) { + throw new DuplicatePropertyException(name); + } + + JavaElementImpl element = new JavaElementImpl(field); + Property property = createProperty(name, element); + initProperty(property, annotation); + type.getProperties().add(property); + properties.put(name, element); + } + + @Override + public void visitConstructorParameter(JavaParameterImpl parameter, JavaImplementation type) + throws IntrospectionException { + + Map<String, JavaElementImpl> properties = type.getPropertyMembers(); + A annotation = parameter.getAnnotation(annotationClass); + if (annotation != null) { + String name = getName(annotation); + if (name == null) { + name = parameter.getType().getName(); + } + if (!"".equals(name) && !"".equals(parameter.getName()) && !name.equals(parameter.getName())) { + throw new InvalidConstructorException("Mismatched property name: " + parameter); + } + if ("".equals(name) && "".equals(parameter.getName())) { + throw new InvalidPropertyException("Missing property name: " + parameter); + } + if ("".equals(name)) { + name = parameter.getName(); + } + + if (properties.containsKey(name)) { + throw new DuplicatePropertyException("Duplication property: " + name); + } + parameter.setName(name); + parameter.setClassifer(annotationClass); + Property property = createProperty(name, parameter); + initProperty(property, annotation); + type.getProperties().add(property); + properties.put(name, parameter); + } + } + + protected abstract String getName(A annotation); + + protected abstract void initProperty(Property property, A annotation) throws IntrospectionException; + + @SuppressWarnings("unchecked") + protected Property createProperty(String name, JavaElementImpl element) throws IntrospectionException { + + Property property = assemblyFactory.createProperty(); + property.setName(name); + Class<?> baseType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType()); + property.setXSDType(JavaXMLMapper.getXMLType(baseType)); + + Class<?> javaType = element.getType(); + if (javaType.isArray() || Collection.class.isAssignableFrom(javaType)) { + property.setMany(true); + } + return property; + + } + +} |