diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java new file mode 100644 index 0000000000..ff70fb89eb --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/introspect/impl/AbstractPropertyProcessor.java @@ -0,0 +1,257 @@ +/* + * 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.annotation.ElementType; +import java.lang.reflect.Field; +import java.lang.reflect.GenericArrayType; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; +import java.lang.reflect.ParameterizedType; +import java.lang.reflect.Type; +import java.util.Collection; +import java.util.List; +import java.util.Map; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.assembly.Property; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.implementation.java.IntrospectionException; +import org.apache.tuscany.sca.implementation.java.JavaElementImpl; +import org.apache.tuscany.sca.implementation.java.JavaImplementation; +import org.apache.tuscany.sca.implementation.java.JavaParameterImpl; +import org.apache.tuscany.sca.implementation.java.introspect.BaseJavaClassVisitor; +import org.apache.tuscany.sca.implementation.java.introspect.JavaIntrospectionHelper; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * 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(ExtensionPointRegistry registry, Class<A> annotationClass) { + super(registry); + this.annotationClass = annotationClass; + } + + private static boolean removeProperty(JavaElementImpl prop, JavaImplementation type) { + if(prop==null) { + return false; + } + List<Property> props = type.getProperties(); + for(int i=0;i<props.size();i++) { + if(props.get(i).getName().equals(prop.getName())) { + props.remove(i); + return true; + } + } + return false; + } + + @Override + public void visitMethod(Method method, JavaImplementation type) throws IntrospectionException { + A annotation = method.getAnnotation(annotationClass); + if (annotation != null) { + + if (!JavaIntrospectionHelper.isSetter(method)) { + throw new IllegalPropertyException("Annotated method is not a setter: " + method, method); + } + + if(Modifier.isStatic(method.getModifiers())) { + throw new IllegalPropertyException("Static method " + method.getName() +" in class " + method.getDeclaringClass().getName() + " can not be annotated as a Property"); + } + + 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(); + JavaElementImpl prop = properties.get(name); + // Setter override field + if (prop != null && prop.getElementType() != ElementType.FIELD) { + throw new DuplicatePropertyException(name); + } + + removeProperty(prop, type); + + 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); + } + + // enforce the constraint that an ordinary method's argument can not be a Property + Annotation paramsAnnotations[][] = method.getParameterAnnotations(); + for (int i = 0; i < paramsAnnotations.length; i++) { + Annotation argAnnotations[] = paramsAnnotations[i]; + for (int j = 0; j < argAnnotations.length; j++) { + if(argAnnotations[j].annotationType() == org.oasisopen.sca.annotation.Property.class) { + throw new IllegalPropertyException("[JCA90001] Argument " + (i+1) + " of method " + method.getName() + " in class " + method.getDeclaringClass() + " can not be a Property"); + } + } + } + } + + + @Override + public void visitField(Field field, JavaImplementation type) throws IntrospectionException { + + A annotation = field.getAnnotation(annotationClass); + if (annotation == null) { + return; + } + + if(Modifier.isStatic(field.getModifiers())) { + throw new IllegalPropertyException("Static field " + field.getName() +" in class " + field.getDeclaringClass().getName() + " can not be annotated as a Property"); + } + + if(Modifier.isFinal(field.getModifiers())) { + throw new IllegalPropertyException("[JCA90011] Final field " + field.getName() +" in class " + field.getDeclaringClass().getName() + " can not be annotated as a Property"); + } + + 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(); + JavaElementImpl prop = properties.get(name); + // Setter override field + if (prop != null && prop.getElementType() == ElementType.FIELD) { + throw new DuplicatePropertyException(name); + } + + if (prop == null) { + 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("[JCA90013] Missing property name: " + parameter); + } + if ("".equals(name)) { + name = parameter.getName(); + } + + if (!getRequired(annotation)) { + throw new InvalidPropertyException("[JCA90014] Constructor property must not have required=false: " + type.getName()); + } + + JavaElementImpl prop = properties.get(name); + // Setter override field + if (prop != null && prop.getElementType() != ElementType.FIELD) { + throw new DuplicatePropertyException(name); + } + removeProperty(prop, type); + + parameter.setName(name); + parameter.setClassifer(annotationClass); + Property property = createProperty(name, parameter); + initProperty(property, annotation); + type.getProperties().add(property); + properties.put(name, parameter); + } + } + + protected Property createProperty(String name, JavaElementImpl element) throws IntrospectionException { + + Type type = element.getGenericType(); + Class<?> javaType = element.getType(); + + return createProperty(assemblyFactory, name, javaType, type); + + } + + public static Property createProperty(AssemblyFactory assemblyFactory, String name, Class<?> javaClass, Type genericType) { + Property property = assemblyFactory.createProperty(); + property.setName(name); + + if (javaClass.isArray() || Collection.class.isAssignableFrom(javaClass)) { + property.setMany(true); + if (javaClass.isArray()) { + Class<?> propType = javaClass.getComponentType(); + Type genericPropType = propType; + if (genericType instanceof GenericArrayType) { + genericPropType = ((GenericArrayType)genericType).getGenericComponentType(); + } + DataType dt = new DataTypeImpl(null, propType, genericPropType, XMLType.UNKNOWN); + property.setDataType(dt); + } else { + if (genericType instanceof ParameterizedType) { + // Collection<BaseType> property; + Type genericPropType = ((ParameterizedType)genericType).getActualTypeArguments()[0]; + Class<?> propType = JavaIntrospectionHelper.getErasure(genericPropType); + DataType dt = new DataTypeImpl(null, propType, genericPropType, XMLType.UNKNOWN); + property.setDataType(dt); + } else { + // Collection property; + DataType dt = new DataTypeImpl(null, Object.class, Object.class, XMLType.UNKNOWN); + property.setDataType(dt); + } + } + } else { + DataType dt = new DataTypeImpl(null, javaClass, genericType, XMLType.UNKNOWN); + property.setDataType(dt); + } + return property; + } + + protected abstract String getName(A annotation); + protected abstract boolean getRequired(A annotation); + + protected abstract void initProperty(Property property, A annotation) throws IntrospectionException; + + +} |