Spring Framework example source code file (LangNamespaceUtils.java)

This example Spring Framework source code file (LangNamespaceUtils.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

beandefinition, beandefinition, langnamespaceutils, langnamespaceutils, script_factory_post_processor_bean_name, script_factory_post_processor_bean_name, string, string

The Spring Framework LangNamespaceUtils.java source code

/*
 * Copyright 2002-2007 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.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;

/**
 * @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 = null;
		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;
	}

}