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Fabric3 Introspection Implementation.
/*
* Fabric3
* Copyright ? 2008 Metaform Systems Limited
*
* This proprietary software may be used only connection with the Fabric3 license
* (the ?License?), a copy of which is included in the software or may be
* obtained at: http://www.metaformsystems.com/licenses/license.html.
* Software distributed under the License is distributed on an ?as is? basis,
* without warranties or conditions of any kind. See the License for the
* specific language governing permissions and limitations of use of the software.
* This software is distributed in conjunction with other software licensed under
* different terms. See the separate licenses for those programs included in the
* distribution for the permitted and restricted uses of such software.
*
* --- Original Apache License ---
*
* 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.fabric3.introspection.impl.annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.lang.reflect.Modifier;
import org.osoa.sca.annotations.Callback;
import org.osoa.sca.annotations.Reference;
import org.fabric3.spi.introspection.contract.ContractProcessor;
import org.fabric3.spi.introspection.java.AbstractAnnotationProcessor;
import org.fabric3.spi.introspection.IntrospectionHelper;
import org.fabric3.spi.introspection.IntrospectionContext;
import org.fabric3.spi.introspection.TypeMapping;
import org.fabric3.model.type.component.CallbackDefinition;
import org.fabric3.model.type.java.FieldInjectionSite;
import org.fabric3.model.type.component.Implementation;
import org.fabric3.model.type.java.InjectingComponentType;
import org.fabric3.model.type.java.MethodInjectionSite;
import org.fabric3.model.type.service.ServiceContract;
/**
* @version $Rev: 6194 $ $Date: 2008-12-05 15:52:09 +0000 (Fri, 05 Dec 2008) $
*/
public class CallbackProcessor> extends AbstractAnnotationProcessor {
private final IntrospectionHelper helper;
private final ContractProcessor contractProcessor;
public CallbackProcessor(@Reference ContractProcessor contractProcessor, @Reference IntrospectionHelper helper) {
super(Callback.class);
this.contractProcessor = contractProcessor;
this.helper = helper;
}
public void visitField(Callback annotation, Field field, I implementation, IntrospectionContext context) {
validate(field, context);
String name = helper.getSiteName(field, null);
Type type = field.getGenericType();
FieldInjectionSite site = new FieldInjectionSite(field);
CallbackDefinition definition = createDefinition(name, type, context.getTypeMapping(), context);
implementation.getComponentType().add(definition, site);
}
public void visitMethod(Callback annotation, Method method, I implementation, IntrospectionContext context) {
validate(method, context);
String name = helper.getSiteName(method, null);
Type type = helper.getGenericType(method);
MethodInjectionSite site = new MethodInjectionSite(method, 0);
CallbackDefinition definition = createDefinition(name, type, context.getTypeMapping(), context);
implementation.getComponentType().add(definition, site);
}
private void validate(Field field, IntrospectionContext context) {
if (!Modifier.isProtected(field.getModifiers()) && !Modifier.isPublic(field.getModifiers())) {
Class clazz = field.getDeclaringClass();
InvalidAccessor warning =
new InvalidAccessor("Illegal callback. The field " + field.getName() + " on " + clazz.getName()
+ " is annotated with @Callback and must be public or protected.", clazz);
context.addError(warning);
}
}
private void validate(Method method, IntrospectionContext context) {
if (!Modifier.isProtected(method.getModifiers()) && !Modifier.isPublic(method.getModifiers())) {
Class clazz = method.getDeclaringClass();
InvalidAccessor warning = new InvalidAccessor("Illegal callback. The method " + method
+ " is annotated with @Callback and must be public or protected.", clazz);
context.addError(warning);
}
}
private CallbackDefinition createDefinition(String name, Type type, TypeMapping typeMapping, IntrospectionContext context) {
Type baseType = helper.getBaseType(type, typeMapping);
ServiceContract contract = contractProcessor.introspect(typeMapping, baseType, context);
return new CallbackDefinition(name, contract);
}
}