/*
* Copyright 2012 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.grails.spring;
import grails.spring.BeanBuilder;
import grails.util.CollectionUtils;
import groovy.lang.Binding;
import groovy.lang.Closure;
import groovy.lang.Script;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import grails.core.GrailsApplication;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.util.ClassUtils;
import org.grails.spring.RuntimeSpringConfiguration;
/**
* @since 2.4
* @author Graeme Rocher
*/
public class RuntimeSpringConfigUtilities {
private static final Log LOG = LogFactory.getLog(RuntimeSpringConfigUtilities.class);
public static final String GRAILS_URL_MAPPINGS = "grailsUrlMappings";
public static final String SPRING_RESOURCES_XML = "/WEB-INF/spring/resources.xml";
public static final String SPRING_RESOURCES_GROOVY = "/WEB-INF/spring/resources.groovy";
public static final String SPRING_RESOURCES_CLASS = "resources";
private static final String DEVELOPMENT_SPRING_RESOURCES_XML = "file:./grails-app/conf/spring/resources.xml";
private static volatile BeanBuilder springGroovyResourcesBeanBuilder = null;
/**
* Attempt to load the beans defined by a BeanBuilder DSL closure in "resources.groovy".
*
* @param config
* @param context
*/
private static void doLoadSpringGroovyResources(RuntimeSpringConfiguration config, GrailsApplication application,
GenericApplicationContext context) {
loadExternalSpringConfig(config, application);
if (context != null) {
springGroovyResourcesBeanBuilder.registerBeans(context);
}
}
/**
* Loads any external Spring configuration into the given RuntimeSpringConfiguration object.
* @param config The config instance
*/
public static void loadExternalSpringConfig(RuntimeSpringConfiguration config, final GrailsApplication application) {
if (springGroovyResourcesBeanBuilder == null) {
try {
Class<?> groovySpringResourcesClass = null;
try {
groovySpringResourcesClass = ClassUtils.forName(SPRING_RESOURCES_CLASS,
application.getClassLoader());
}
catch (ClassNotFoundException e) {
// ignore
}
if (groovySpringResourcesClass != null) {
reloadSpringResourcesConfig(config, application, groovySpringResourcesClass);
}
}
catch (Exception ex) {
LOG.error("[RuntimeConfiguration] Unable to load beans from resources.groovy", ex);
}
}
else {
if (!springGroovyResourcesBeanBuilder.getSpringConfig().equals(config)) {
springGroovyResourcesBeanBuilder.registerBeans(config);
}
}
}
public static BeanBuilder reloadSpringResourcesConfig(RuntimeSpringConfiguration config, GrailsApplication application, Class<?> groovySpringResourcesClass) throws InstantiationException, IllegalAccessException {
springGroovyResourcesBeanBuilder = new BeanBuilder(null, config,Thread.currentThread().getContextClassLoader());
springGroovyResourcesBeanBuilder.setBinding(new Binding(CollectionUtils.newMap(
"application", application,
"grailsApplication", application))); // GRAILS-7550
Script script = (Script) groovySpringResourcesClass.newInstance();
script.run();
Object beans = script.getProperty("beans");
springGroovyResourcesBeanBuilder.beans((Closure<?>)beans);
return springGroovyResourcesBeanBuilder;
}
public static void loadSpringGroovyResources(RuntimeSpringConfiguration config, GrailsApplication application) {
loadExternalSpringConfig(config, application);
}
public static void loadSpringGroovyResourcesIntoContext(RuntimeSpringConfiguration config, GrailsApplication application,
GenericApplicationContext context) {
loadExternalSpringConfig(config, application);
doLoadSpringGroovyResources(config, application, context);
}
/**
* Resets the GrailsRumtimeConfigurator.
*/
public static void reset() {
springGroovyResourcesBeanBuilder = null;
}
}