| /* |
| * 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.polygene.runtime.composite; |
| |
| import java.lang.reflect.Array; |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Proxy; |
| import java.util.stream.Stream; |
| import org.apache.polygene.api.common.ConstructionException; |
| import org.apache.polygene.api.structure.ModuleDescriptor; |
| import org.apache.polygene.api.util.HierarchicalVisitor; |
| import org.apache.polygene.api.util.VisitableHierarchy; |
| import org.apache.polygene.runtime.injection.Dependencies; |
| import org.apache.polygene.runtime.injection.DependencyModel; |
| import org.apache.polygene.runtime.injection.InjectedFieldsModel; |
| import org.apache.polygene.runtime.injection.InjectedMethodsModel; |
| import org.apache.polygene.runtime.injection.InjectionContext; |
| |
| import static org.apache.polygene.api.util.Classes.RAW_CLASS; |
| import static org.apache.polygene.api.util.Classes.interfacesOf; |
| |
| /** |
| * JAVADOC |
| */ |
| public abstract class AbstractModifierModel |
| implements Dependencies, VisitableHierarchy<Object, Object> |
| { |
| private final Class<?> modifierClass; |
| |
| private final ConstructorsModel constructorsModel; |
| private final InjectedFieldsModel injectedFieldsModel; |
| private final InjectedMethodsModel injectedMethodsModel; |
| |
| private final Class<Class<?>>[] nextInterfaces; |
| |
| @SuppressWarnings( "unchecked" ) |
| public AbstractModifierModel( Class<?> declaredModifierClass, Class<?> instantiationClass ) |
| { |
| this.modifierClass = instantiationClass; |
| constructorsModel = new ConstructorsModel( modifierClass ); |
| injectedFieldsModel = new InjectedFieldsModel( declaredModifierClass ); |
| injectedMethodsModel = new InjectedMethodsModel( declaredModifierClass ); |
| Class<Class<?>> componentType = (Class<Class<?>>) Class.class.cast( Class.class ); |
| nextInterfaces = interfacesOf( declaredModifierClass ) |
| .map( RAW_CLASS ) |
| .distinct() |
| .toArray( size -> (Class<Class<?>>[]) Array.newInstance( componentType, size ) ); |
| } |
| |
| public Class<?> modifierClass() |
| { |
| return modifierClass; |
| } |
| |
| @Override |
| @SuppressWarnings( "unchecked" ) |
| public Stream<DependencyModel> dependencies() |
| { |
| Stream<? extends Dependencies> models = Stream.of( this.constructorsModel, injectedFieldsModel, injectedMethodsModel ); |
| return models.flatMap( Dependencies::dependencies ); |
| } |
| |
| public boolean isGeneric() |
| { |
| return InvocationHandler.class.isAssignableFrom( modifierClass ); |
| } |
| |
| @Override |
| public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> visitor ) |
| throws ThrowableType |
| { |
| if( visitor.visitEnter( this ) ) |
| { |
| if( constructorsModel.accept( visitor ) ) |
| { |
| if( injectedFieldsModel.accept( visitor ) ) |
| { |
| injectedMethodsModel.accept( visitor ); |
| } |
| } |
| } |
| |
| return visitor.visitLeave( this ); |
| } |
| |
| // Context |
| public InvocationHandler newInstance( ModuleDescriptor module, |
| InvocationHandler next, |
| ProxyReferenceInvocationHandler proxyHandler, |
| Method method |
| ) |
| { |
| InjectionContext injectionContext = new InjectionContext( module, wrapNext( next ), proxyHandler ); |
| |
| Object modifier = constructorsModel.newInstance( injectionContext ); |
| |
| try |
| { |
| if( FragmentClassLoader.isGenerated( modifier ) ) |
| { |
| modifier.getClass().getField( "_instance" ).set( modifier, proxyHandler ); |
| } |
| } |
| catch( IllegalAccessException | NoSuchFieldException e ) |
| { |
| e.printStackTrace(); |
| } |
| |
| injectedFieldsModel.inject( injectionContext, modifier ); |
| injectedMethodsModel.inject( injectionContext, modifier ); |
| |
| if( isGeneric() ) |
| { |
| return (InvocationHandler) modifier; |
| } |
| else |
| { |
| try |
| { |
| Method invocationMethod = modifierClass.getMethod( "_" + method.getName(), method.getParameterTypes() ); |
| TypedModifierInvocationHandler handler = new TypedModifierInvocationHandler(); |
| handler.setFragment( modifier ); |
| handler.setMethod( invocationMethod ); |
| return handler; |
| } |
| catch( NoSuchMethodException e ) |
| { |
| throw new ConstructionException( "Could not find modifier method", e ); |
| } |
| } |
| } |
| |
| private Object wrapNext( InvocationHandler next ) |
| { |
| if( isGeneric() ) |
| { |
| return next; |
| } |
| else |
| { |
| return Proxy.newProxyInstance( modifierClass.getClassLoader(), nextInterfaces, next ); |
| } |
| } |
| |
| @Override |
| public boolean equals( Object o ) |
| { |
| if( this == o ) |
| { |
| return true; |
| } |
| if( o == null || getClass() != o.getClass() ) |
| { |
| return false; |
| } |
| AbstractModifierModel that = (AbstractModifierModel) o; |
| return modifierClass.equals( that.modifierClass ); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return modifierClass.hashCode(); |
| } |
| } |