| /* |
| * 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.rest.server.restlet.freemarker; |
| |
| import freemarker.template.ObjectWrapper; |
| import freemarker.template.TemplateCollectionModel; |
| import freemarker.template.TemplateHashModelEx; |
| import freemarker.template.TemplateModel; |
| import freemarker.template.TemplateModelException; |
| import freemarker.template.TemplateScalarModel; |
| import java.util.List; |
| import java.util.function.Function; |
| import java.util.stream.Collectors; |
| import org.apache.polygene.api.PolygeneAPI; |
| import org.apache.polygene.api.property.Property; |
| import org.apache.polygene.api.value.ValueComposite; |
| import org.apache.polygene.api.value.ValueDescriptor; |
| |
| /** |
| * TODO |
| */ |
| public class ValueCompositeTemplateModel |
| implements TemplateHashModelEx, TemplateScalarModel |
| { |
| private ValueComposite composite; |
| private ObjectWrapper wrapper; |
| private ValueDescriptor descriptor; |
| |
| public ValueCompositeTemplateModel( ValueComposite composite, ObjectWrapper wrapper ) |
| { |
| this.composite = composite; |
| this.wrapper = wrapper; |
| descriptor = (ValueDescriptor) PolygeneAPI.FUNCTION_DESCRIPTOR_FOR.apply( composite ); |
| } |
| |
| @Override |
| public int size() |
| throws TemplateModelException |
| { |
| return (int) descriptor.state().properties().count(); |
| } |
| |
| @Override |
| public TemplateCollectionModel keys() |
| throws TemplateModelException |
| { |
| List<String> names = descriptor.state().properties() |
| .map( descriptor -> descriptor.qualifiedName().name() ) |
| .collect( Collectors.toList() ); |
| return (TemplateCollectionModel) wrapper.wrap( names.iterator() ); |
| } |
| |
| @Override |
| public TemplateCollectionModel values() |
| throws TemplateModelException |
| { |
| List<Object> values = PolygeneAPI.FUNCTION_COMPOSITE_INSTANCE_OF.apply( composite ) |
| .state().properties() |
| .map( (Function<Property<?>, Object>) objectProperty -> { |
| try |
| { |
| return wrapper.wrap( objectProperty.get() ); |
| } |
| catch( TemplateModelException e ) |
| { |
| throw new IllegalStateException( e ); |
| } |
| } ) |
| .collect( Collectors.toList() ); |
| |
| return (TemplateCollectionModel) wrapper.wrap( values ); |
| } |
| |
| @Override |
| public TemplateModel get( String key ) |
| throws TemplateModelException |
| { |
| try |
| { |
| return wrapper.wrap( PolygeneAPI.FUNCTION_COMPOSITE_INSTANCE_OF |
| .apply( composite ) |
| .state() |
| .propertyFor( descriptor.state().findPropertyModelByName( key ).accessor() ) |
| .get() ); |
| } |
| catch( IllegalArgumentException e ) |
| { |
| return null; |
| } |
| } |
| |
| @Override |
| public boolean isEmpty() |
| throws TemplateModelException |
| { |
| return size() == 0; |
| } |
| |
| @Override |
| public String getAsString() |
| throws TemplateModelException |
| { |
| return composite.toString(); |
| } |
| } |