com.google.web.bindery.autobean.vm.AutoBeanFactorySource Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* Licensed 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 com.google.web.bindery.autobean.vm;
import com.google.web.bindery.autobean.shared.AutoBean;
import com.google.web.bindery.autobean.shared.AutoBeanFactory;
import com.google.web.bindery.autobean.shared.AutoBeanFactory.Category;
import com.google.web.bindery.autobean.shared.AutoBeanFactory.NoWrap;
import com.google.web.bindery.autobean.shared.impl.EnumMap;
import com.google.web.bindery.autobean.vm.impl.FactoryHandler;
import com.google.web.bindery.autobean.vm.impl.ProxyAutoBean;
/**
* Generates JVM-compatible implementations of AutoBeanFactory and AutoBean
* types.
*
* This implementation is written assuming that the AutoBeanFactory and
* associated declarations will validate if compiled and used with the
* AutoBeanFactoyModel.
*
* This is experimental, unsupported code.
*/
public class AutoBeanFactorySource {
/*
* NB: This implementation is excessively dynamic, however the inability to
* create a TypeOracle fram a ClassLoader prevents re-using the existing model
* code. If the model code could be reused, it would be straightforward to
* simply generate implementations of the various interfaces.
*/
private static final AutoBeanFactory EMPTY = create(AutoBeanFactory.class);
/**
* Create an instance of an AutoBeanFactory.
*
* @param the factory type
* @param clazz the Class representing the factory interface
* @return an instance of the AutoBeanFactory
*/
public static F create(Class clazz) {
Configuration.Builder builder = new Configuration.Builder();
Category cat = clazz.getAnnotation(Category.class);
if (cat != null) {
builder.setCategories(cat.value());
}
NoWrap noWrap = clazz.getAnnotation(NoWrap.class);
if (noWrap != null) {
builder.setNoWrap(noWrap.value());
}
return ProxyAutoBean.makeProxy(clazz, new FactoryHandler(builder.build()), EnumMap.class);
}
/**
* Create an instance of an AutoBean directly.
*
* @param the interface type implemented by the AutoBean
* @param clazz the interface type implemented by the AutoBean
* @return an instance of an AutoBean
*/
public static AutoBean createBean(Class clazz, Configuration configuration) {
return new ProxyAutoBean(EMPTY, clazz, configuration);
}
}