/*
* Copyright 2010 the original author or authors
*
* 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 org.camunda.bpm.engine.spring.components.aop.util;
import org.springframework.aop.scope.ScopedProxyUtils;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.config.BeanDefinitionVisitor;
import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.util.StringValueResolver;
/**
* this class was copied wholesale from Spring 3.1's RefreshScope, which Dave Syer wrote.
*
* @author Dave Syer
*/
public class Scopifier extends BeanDefinitionVisitor {
private final boolean proxyTargetClass;
private final BeanDefinitionRegistry registry;
private final String scope;
private final boolean scoped;
public static BeanDefinitionHolder createScopedProxy(String beanName, BeanDefinition definition, BeanDefinitionRegistry registry, boolean proxyTargetClass) {
BeanDefinitionHolder proxyHolder = ScopedProxyUtils.createScopedProxy(new BeanDefinitionHolder(definition, beanName), registry, proxyTargetClass);
registry.registerBeanDefinition(beanName, proxyHolder.getBeanDefinition());
return proxyHolder;
}
public Scopifier(BeanDefinitionRegistry registry, String scope, boolean proxyTargetClass, boolean scoped) {
super(new StringValueResolver() {
public String resolveStringValue(String value) {
return value;
}
});
this.registry = registry;
this.proxyTargetClass = proxyTargetClass;
this.scope = scope;
this.scoped = scoped;
}
@Override
protected Object resolveValue(Object value) {
BeanDefinition definition = null;
String beanName = null;
if (value instanceof BeanDefinition) {
definition = (BeanDefinition) value;
beanName = BeanDefinitionReaderUtils.generateBeanName(definition, registry);
} else if (value instanceof BeanDefinitionHolder) {
BeanDefinitionHolder holder = (BeanDefinitionHolder) value;
definition = holder.getBeanDefinition();
beanName = holder.getBeanName();
}
if (definition != null) {
boolean nestedScoped = scope.equals(definition.getScope());
boolean scopeChangeRequiresProxy = !scoped && nestedScoped;
if (scopeChangeRequiresProxy) {
// Exit here so that nested inner bean definitions are not
// analysed
return createScopedProxy(beanName, definition, registry, proxyTargetClass);
}
}
// Nested inner bean definitions are recursively analysed here
value = super.resolveValue(value);
return value;
}
}