| /* |
| * 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.bootstrap.layered; |
| |
| import java.lang.reflect.Constructor; |
| import java.util.HashMap; |
| import org.apache.zest.bootstrap.LayerAssembly; |
| import org.apache.zest.bootstrap.ModuleAssembly; |
| |
| public abstract class LayeredLayerAssembler |
| implements LayerAssembler |
| { |
| private HashMap<Class<? extends ModuleAssembler>, ModuleAssembler> assemblers = new HashMap<>(); |
| |
| protected ModuleAssembly createModule( LayerAssembly layer, Class<? extends ModuleAssembler> modulerAssemblerClass ) |
| { |
| try |
| { |
| ModuleAssembler moduleAssembler = instantiateAssembler( layer, modulerAssemblerClass ); |
| String moduleName = createModuleName( modulerAssemblerClass ); |
| LayeredApplicationAssembler.setNameIfPresent( modulerAssemblerClass, moduleName ); |
| ModuleAssembly module = layer.module( moduleName ); |
| assemblers.put( modulerAssemblerClass, moduleAssembler ); |
| ModuleAssembly assembly = moduleAssembler.assemble( layer, module ); |
| if( assembly == null ) |
| { |
| return module; |
| } |
| return assembly; |
| } |
| catch( Exception e ) |
| { |
| throw new IllegalArgumentException( "Unable to instantiate module with " + modulerAssemblerClass.getSimpleName(), e ); |
| } |
| } |
| |
| protected String createModuleName( Class<? extends ModuleAssembler> modulerAssemblerClass ) |
| { |
| String moduleName = modulerAssemblerClass.getSimpleName(); |
| if( moduleName.endsWith( "Module" ) ) |
| { |
| moduleName = moduleName.substring( 0, moduleName.length() - 6 ) + " Module"; |
| } |
| return moduleName; |
| } |
| |
| protected ModuleAssembler instantiateAssembler( LayerAssembly layer, |
| Class<? extends ModuleAssembler> modulerAssemblerClass |
| ) |
| throws InstantiationException, IllegalAccessException, java.lang.reflect.InvocationTargetException, NoSuchMethodException |
| { |
| ModuleAssembler moduleAssembler; |
| try |
| { |
| Constructor<? extends ModuleAssembler> assemblyConstructor = modulerAssemblerClass.getDeclaredConstructor( ModuleAssembly.class ); |
| assemblyConstructor.setAccessible( true ); |
| moduleAssembler = assemblyConstructor.newInstance( layer ); |
| } |
| catch( NoSuchMethodException e ) |
| { |
| Constructor<? extends ModuleAssembler> assemblyConstructor = modulerAssemblerClass.getDeclaredConstructor(); |
| assemblyConstructor.setAccessible( true ); |
| moduleAssembler = assemblyConstructor.newInstance(); |
| } |
| return moduleAssembler; |
| } |
| |
| @SuppressWarnings( "unchecked" ) |
| protected <T extends ModuleAssembler> T assemblerOf( Class<T> moduleAssemblerType ) |
| { |
| return (T) assemblers.get( moduleAssemblerType ); |
| } |
| } |