com.gwtplatform.dispatch.server.spring.utils.SpringUtils Maven / Gradle / Ivy
/**
* Copyright 2011 ArcBees 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.gwtplatform.dispatch.server.spring.utils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.util.StringUtils;
import org.springframework.web.context.support.AbstractRefreshableWebApplicationContext;
/**
* @author Peter Simun
*
* @deprecated Please use {@link com.gwtplatform.dispatch.rpc.server.spring.utils.SpringUtils}.
*/
@Deprecated
public class SpringUtils {
public static B getOrCreate(ApplicationContext applicationContext,
Class clazz) throws BeansException {
try {
return getInstance(applicationContext, clazz);
} catch (BeansException ex) {
}
return instantiate(applicationContext, clazz);
}
@SuppressWarnings("unchecked")
public static B instantiate(ApplicationContext applicationContext,
Class clazz) throws BeansException {
DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(
applicationContext);
return (B) beanFactory.createBean(clazz,
AbstractBeanDefinition.AUTOWIRE_CONSTRUCTOR, false);
}
public static void registerBean(ApplicationContext applicationContext,
B instance) throws BeansException {
if (applicationContext instanceof GenericApplicationContext) {
ConfigurableListableBeanFactory beanFactory = ((GenericApplicationContext) applicationContext)
.getBeanFactory();
beanFactory.registerSingleton(generateName(beanFactory, createBeanDefinition(instance)), instance);
} else if (applicationContext instanceof AbstractRefreshableWebApplicationContext) {
ConfigurableListableBeanFactory beanFactory = ((AbstractRefreshableWebApplicationContext)
applicationContext).getBeanFactory();
beanFactory.registerSingleton(generateName(beanFactory, createBeanDefinition(instance)), instance);
}
}
public static B getInstance(ApplicationContext applicationContext,
Class clazz) throws BeansException {
DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory(
applicationContext);
return beanFactory.getBean(clazz);
}
private static RootBeanDefinition createBeanDefinition(B instance) {
RootBeanDefinition bd = new RootBeanDefinition(instance.getClass(),
AbstractBeanDefinition.AUTOWIRE_CONSTRUCTOR, false);
bd.setScope(BeanDefinition.SCOPE_SINGLETON);
return bd;
}
private static String generateName(ConfigurableListableBeanFactory registry,
RootBeanDefinition definition) {
String generatedBeanName = definition.getBeanClassName();
if (generatedBeanName == null) {
if (definition.getParentName() != null) {
generatedBeanName = definition.getParentName() + "$child";
} else if (definition.getFactoryBeanName() != null) {
generatedBeanName = definition.getFactoryBeanName() + "$created";
}
}
if (!StringUtils.hasText(generatedBeanName)) {
throw new BeanDefinitionStoreException(
"Unnamed bean definition specifies neither "
+ "'class' nor 'parent' nor 'factory-bean' - can't generate bean name");
}
String id = generatedBeanName;
// Top-level bean: use plain class name.
// Increase counter until the id is unique.
int counter = -1;
while (counter == -1 || (registry.containsSingleton(id))) {
counter++;
id = generatedBeanName + "#" + counter;
}
return id;
}
}