| /** |
| * 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 |
| * <p/> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p/> |
| * 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.aries.blueprint.plugin.model; |
| |
| import org.apache.aries.blueprint.plugin.Activation; |
| import org.apache.aries.blueprint.plugin.model.service.ServiceProvider; |
| import org.apache.commons.lang.StringUtils; |
| import org.ops4j.pax.cdi.api.OsgiService; |
| import org.springframework.beans.factory.annotation.Autowired; |
| import org.springframework.beans.factory.annotation.Value; |
| import org.springframework.context.annotation.DependsOn; |
| import org.springframework.context.annotation.Lazy; |
| import org.springframework.stereotype.Component; |
| |
| import javax.annotation.PostConstruct; |
| import javax.annotation.PreDestroy; |
| import javax.inject.Inject; |
| import javax.inject.Named; |
| import javax.inject.Singleton; |
| import javax.persistence.PersistenceContext; |
| import javax.persistence.PersistenceUnit; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.AnnotatedElement; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.SortedSet; |
| import java.util.TreeSet; |
| |
| public class Bean extends BeanRef { |
| public final String initMethod; |
| public String destroyMethod; |
| public SortedSet<Property> properties = new TreeSet<>(); |
| public List<Argument> constructorArguments = new ArrayList<>(); |
| public Set<OsgiServiceRef> serviceRefs = new HashSet<>(); |
| public List<Field> persistenceFields; |
| public Set<TransactionalDef> transactionDefs = new HashSet<>(); |
| public boolean isPrototype; |
| public List<ServiceProvider> serviceProviders = new ArrayList<>(); |
| public Activation activation; |
| public String dependsOn; |
| |
| public Bean(Class<?> clazz) { |
| super(clazz, BeanRef.getBeanName(clazz)); |
| Introspector introspector = new Introspector(clazz); |
| |
| activation = getActivation(clazz); |
| dependsOn = getDependsOn(clazz); |
| |
| initMethod = findMethodAnnotatedWith(introspector, PostConstruct.class); |
| destroyMethod = findMethodAnnotatedWith(introspector, PreDestroy.class); |
| |
| interpretTransactionalMethods(clazz); |
| |
| this.isPrototype = isPrototype(clazz); |
| this.persistenceFields = findPersistenceFields(introspector); |
| |
| setQualifiersFromAnnotations(clazz.getAnnotations()); |
| |
| interpretServiceProvider(); |
| } |
| |
| protected String getDependsOn(AnnotatedElement annotatedElement) { |
| DependsOn annotation = annotatedElement.getAnnotation(DependsOn.class); |
| if (annotation == null || annotation.value().length == 0) { |
| return null; |
| } |
| String[] value = annotation.value(); |
| return StringUtils.join(value, " "); |
| } |
| |
| protected Activation getActivation(AnnotatedElement annotatedElement) { |
| Lazy lazy = annotatedElement.getAnnotation(Lazy.class); |
| if (lazy == null) { |
| return null; |
| } |
| return lazy.value() ? Activation.LAZY : Activation.EAGER; |
| } |
| |
| private void interpretServiceProvider() { |
| ServiceProvider serviceProvider = ServiceProvider.fromBean(this); |
| if (serviceProvider != null) { |
| serviceProviders.add(serviceProvider); |
| } |
| } |
| |
| private List<Field> findPersistenceFields(Introspector introspector) { |
| return introspector.fieldsWith(PersistenceContext.class, PersistenceUnit.class); |
| } |
| |
| private void interpretTransactionalMethods(Class<?> clazz) { |
| transactionDefs.addAll(new JavaxTransactionFactory().create(clazz)); |
| transactionDefs.addAll(new SpringTransactionFactory().create(clazz)); |
| } |
| |
| private String findMethodAnnotatedWith(Introspector introspector, Class<? extends Annotation> annotation) { |
| Method initMethod = introspector.methodWith(annotation); |
| if (initMethod == null) { |
| return null; |
| } |
| return initMethod.getName(); |
| } |
| |
| private boolean isPrototype(Class<?> clazz) { |
| return clazz.getAnnotation(Singleton.class) == null && clazz.getAnnotation(Component.class) == null; |
| } |
| |
| public void resolve(Matcher matcher) { |
| resolveArguments(matcher); |
| resolveFiields(matcher); |
| resolveMethods(matcher); |
| } |
| |
| private void resolveMethods(Matcher matcher) { |
| for (Method method : new Introspector(clazz).methodsWith(Value.class, Autowired.class, Inject.class)) { |
| Property prop = Property.create(matcher, method); |
| if (prop != null) { |
| properties.add(prop); |
| } |
| } |
| } |
| |
| private void resolveFiields(Matcher matcher) { |
| for (Field field : new Introspector(clazz).fieldsWith(Value.class, Autowired.class, Inject.class)) { |
| Property prop = Property.create(matcher, field); |
| if (prop != null) { |
| properties.add(prop); |
| } |
| } |
| } |
| |
| protected void resolveArguments(Matcher matcher) { |
| Constructor<?>[] declaredConstructors = clazz.getDeclaredConstructors(); |
| for (Constructor constructor : declaredConstructors) { |
| Annotation inject = constructor.getAnnotation(Inject.class); |
| Annotation autowired = constructor.getAnnotation(Autowired.class); |
| if (inject != null || autowired != null || declaredConstructors.length == 1) { |
| resolveArguments(matcher, constructor.getParameterTypes(), constructor.getParameterAnnotations()); |
| break; |
| } |
| } |
| } |
| |
| protected void resolveArguments(Matcher matcher, Class[] parameterTypes, Annotation[][] parameterAnnotations) { |
| for (int i = 0; i < parameterTypes.length; ++i) { |
| Annotation[] annotations = parameterAnnotations[i]; |
| String ref = null; |
| String value = null; |
| Value valueAnnotation = findAnnotation(annotations, Value.class); |
| OsgiService osgiServiceAnnotation = findAnnotation(annotations, OsgiService.class); |
| |
| if (valueAnnotation != null) { |
| value = valueAnnotation.value(); |
| } |
| |
| if (osgiServiceAnnotation != null) { |
| Named namedAnnotation = findAnnotation(annotations, Named.class); |
| ref = namedAnnotation != null ? namedAnnotation.value() : getBeanNameFromSimpleName(parameterTypes[i].getSimpleName()); |
| OsgiServiceRef osgiServiceRef = new OsgiServiceRef(parameterTypes[i], osgiServiceAnnotation, ref); |
| serviceRefs.add(osgiServiceRef); |
| } |
| |
| if (ref == null && value == null && osgiServiceAnnotation == null) { |
| BeanRef template = new BeanRef(parameterTypes[i]); |
| template.setQualifiersFromAnnotations(annotations); |
| BeanRef bean = matcher.getMatching(template); |
| if (bean != null) { |
| ref = bean.id; |
| } else { |
| Named namedAnnotation = findAnnotation(annotations, Named.class); |
| if (namedAnnotation != null) { |
| ref = namedAnnotation.value(); |
| } else { |
| ref = getBeanName(parameterTypes[i]); |
| } |
| } |
| } |
| |
| constructorArguments.add(new Argument(ref, value)); |
| } |
| } |
| |
| private static <T> T findAnnotation(Annotation[] annotations, Class<T> annotation) { |
| for (Annotation a : annotations) { |
| if (a.annotationType() == annotation) { |
| return annotation.cast(a); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| return clazz.getName(); |
| } |
| |
| public void writeProperties(PropertyWriter writer) { |
| for (Property property : properties) { |
| writer.writeProperty(property); |
| } |
| } |
| |
| public void writeArguments(ArgumentWriter writer) { |
| for (Argument argument : constructorArguments) { |
| writer.writeArgument(argument); |
| } |
| } |
| |
| |
| public boolean needFieldInjection() { |
| for (Property property : properties) { |
| if (property.isField) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |