org.springframework.scripting.config.LangNamespaceUtils Maven / Gradle / Ivy
/*
* Copyright 2002-2018 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
*
* https://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.springframework.scripting.config;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.scripting.support.ScriptFactoryPostProcessor;
/**
* Utilities for use with {@link LangNamespaceHandler}.
*
* @author Rob Harrop
* @author Mark Fisher
* @since 2.5
*/
public abstract class LangNamespaceUtils {
/**
* The unique name under which the internally managed {@link ScriptFactoryPostProcessor} is
* registered in the {@link BeanDefinitionRegistry}.
*/
private static final String SCRIPT_FACTORY_POST_PROCESSOR_BEAN_NAME =
"org.springframework.scripting.config.scriptFactoryPostProcessor";
/**
* Register a {@link ScriptFactoryPostProcessor} bean definition in the supplied
* {@link BeanDefinitionRegistry} if the {@link ScriptFactoryPostProcessor} hasn't
* already been registered.
* @param registry the {@link BeanDefinitionRegistry} to register the script processor with
* @return the {@link ScriptFactoryPostProcessor} bean definition (new or already registered)
*/
public static BeanDefinition registerScriptFactoryPostProcessorIfNecessary(BeanDefinitionRegistry registry) {
BeanDefinition beanDefinition;
if (registry.containsBeanDefinition(SCRIPT_FACTORY_POST_PROCESSOR_BEAN_NAME)) {
beanDefinition = registry.getBeanDefinition(SCRIPT_FACTORY_POST_PROCESSOR_BEAN_NAME);
}
else {
beanDefinition = new RootBeanDefinition(ScriptFactoryPostProcessor.class);
registry.registerBeanDefinition(SCRIPT_FACTORY_POST_PROCESSOR_BEAN_NAME, beanDefinition);
}
return beanDefinition;
}
}