| /* |
| * 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.zest.library.rest.server.api; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Method; |
| import org.apache.zest.api.common.AppliesTo; |
| import org.apache.zest.api.common.AppliesToFilter; |
| import org.apache.zest.api.concern.GenericConcern; |
| import org.apache.zest.api.constraint.ConstraintDeclaration; |
| import org.apache.zest.api.injection.scope.Service; |
| import org.apache.zest.api.structure.Module; |
| import org.apache.zest.library.rest.server.api.constraint.InteractionConstraintDeclaration; |
| import org.apache.zest.library.rest.server.api.constraint.RequiresValid; |
| import org.apache.zest.library.rest.server.restlet.InteractionConstraints; |
| |
| /** |
| * Add this concern to all interaction methods that use constraints |
| */ |
| @AppliesTo( InteractionConstraintsConcern.HasInteractionConstraints.class ) |
| public class InteractionConstraintsConcern |
| extends GenericConcern |
| { |
| @Service |
| private InteractionConstraints interactionConstraints; |
| |
| @Service |
| private Module module; |
| |
| @Override |
| public Object invoke( Object proxy, Method method, Object[] args ) |
| throws Throwable |
| { |
| if( !interactionConstraints.isValid( proxy.getClass(), ObjectSelection.current(), module ) ) |
| { |
| throw new IllegalStateException( "Not allowed to invoke interaction " + method.getName() ); |
| } |
| |
| if( !interactionConstraints.isValid( method, ObjectSelection.current(), module ) ) |
| { |
| throw new IllegalStateException( "Not allowed to invoke interaction " + method.getName() ); |
| } |
| |
| return next.invoke( proxy, method, args ); |
| } |
| |
| public static class HasInteractionConstraints |
| implements AppliesToFilter |
| { |
| @Override |
| public boolean appliesTo( Method method, Class<?> mixin, Class<?> compositeType, Class<?> fragmentClass ) |
| { |
| for( Annotation annotation : method.getAnnotations() ) |
| { |
| if( annotation.annotationType().equals( RequiresValid.class ) || |
| annotation.annotationType().getAnnotation( ConstraintDeclaration.class ) != null || |
| annotation.annotationType().getAnnotation( InteractionConstraintDeclaration.class ) != null ) |
| { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |
| } |