| /* |
| * 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.library.restlet.crud; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.stream.Stream; |
| import java.util.stream.StreamSupport; |
| import org.apache.polygene.api.identity.HasIdentity; |
| import org.apache.polygene.api.identity.Identity; |
| import org.apache.polygene.api.injection.scope.Service; |
| import org.apache.polygene.api.injection.scope.Structure; |
| import org.apache.polygene.api.injection.scope.This; |
| import org.apache.polygene.api.mixin.Mixins; |
| import org.apache.polygene.api.property.Property; |
| import org.apache.polygene.api.value.ValueBuilder; |
| import org.apache.polygene.api.value.ValueBuilderFactory; |
| import org.apache.polygene.library.restlet.FormField; |
| import org.apache.polygene.library.restlet.RestForm; |
| import org.apache.polygene.library.restlet.RestLink; |
| import org.apache.polygene.library.restlet.identity.IdentityManager; |
| import org.apache.polygene.library.restlet.repository.CrudRepository; |
| import org.apache.polygene.library.restlet.repository.RepositoryLocator; |
| import org.apache.polygene.library.restlet.resource.ResourceBuilder; |
| import org.apache.polygene.library.restlet.resource.ServerResource; |
| import org.restlet.Request; |
| import org.restlet.data.Method; |
| import org.restlet.data.Reference; |
| |
| @Mixins( EntityListResource.Mixin.class ) |
| public interface EntityListResource<T extends HasIdentity> extends ServerResource<EntityList> |
| { |
| abstract class Mixin<T extends HasIdentity> |
| implements EntityListResource<T> |
| { |
| @This |
| private Parameters<T> parameters; |
| |
| @Structure |
| private ValueBuilderFactory vbf; |
| |
| @Service |
| private ResourceBuilder resourceBuilder; |
| |
| @Service |
| private RepositoryLocator locator; |
| |
| @Service |
| private IdentityManager identityManager; |
| |
| @Override |
| public EntityList get() |
| { |
| Property<Request> request = parameters.request(); |
| Reference base = request.get().getResourceRef(); |
| String name = "list[" + parameters.entityType().get().getSimpleName() + "]"; |
| Identity identity = identityManager.generate( EntityListResource.class, name ); |
| ValueBuilder<EntityList> builder = vbf.newValueBuilder( EntityList.class ); |
| List<EntityRef> result = getEntityRefs( base ); |
| EntityList prototype = builder.prototype(); |
| prototype.identity().set( identity ); |
| prototype.entities().set( Collections.unmodifiableList( result ) ); |
| prototype.commands().set( Collections.singletonList( resourceBuilder.createCommand( base ) ) ); |
| return builder.newInstance(); |
| } |
| |
| @Override |
| public RestLink post( RestForm form ) |
| { |
| FormField nameField = form.field( "name" ); |
| String name = null; |
| if( nameField != null ) |
| { |
| name = nameField.value().get(); |
| } |
| Reference base = parameters.request().get().getResourceRef(); |
| Class<T> entityType = parameters.entityType().get(); |
| Identity identity = identityManager.generate(entityType, name); |
| locator.find( entityType ).create( identity ); |
| return resourceBuilder.createRestLink( identity.toString(), base, Method.GET ); |
| } |
| |
| @SuppressWarnings( "unchecked" ) |
| private List<EntityRef> getEntityRefs( Reference base ) |
| { |
| ArrayList result = new ArrayList<>(); |
| Property<Class<T>> property = parameters.entityType(); |
| Class<T> entityType = property.get(); |
| CrudRepository<T> repository = locator.find( entityType ); |
| Iterable<T> all = repository.findAll(); |
| Stream<T> stream = StreamSupport.stream( all.spliterator(), false ); |
| stream |
| .map( entity -> entity.identity().get() ) |
| .map( identity -> resourceBuilder.createEntityRef( identity, base ) ) |
| .forEach( result::add ); |
| return result; |
| } |
| } |
| } |