/*
* =============================================================================
*
* Copyright (c) 2011-2014, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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.thymeleaf.spring4.templateresolver;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.thymeleaf.exceptions.ConfigurationException;
import org.thymeleaf.resourceresolver.IResourceResolver;
import org.thymeleaf.spring4.resourceresolver.SpringResourceResourceResolver;
import org.thymeleaf.templateresolver.TemplateResolver;
import org.thymeleaf.util.Validate;
/**
* <p>
* Implementation of {@link org.thymeleaf.templateresolver.ITemplateResolver} that extends {@link TemplateResolver}
* and uses a {@link org.thymeleaf.spring4.resourceresolver.SpringResourceResourceResolver} for resource resolution.
* </p>
*
* @author Daniel Fernández
*
* @since 2.1.0
*
*/
public class SpringResourceTemplateResolver
extends TemplateResolver
implements ApplicationContextAware, InitializingBean {
private final SpringResourceResourceResolver resourceResolver;
private ApplicationContext applicationContext = null;
public SpringResourceTemplateResolver() {
super();
this.resourceResolver = new SpringResourceResourceResolver();
super.setResourceResolver(this.resourceResolver);
}
public void setApplicationContext(final ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
public void afterPropertiesSet() throws Exception {
Validate.notNull(this.applicationContext,
"ApplicationContext has not been initialized in resource resolver. TemplateResolver or " +
"ResourceResolver might not have been correctly configured by the Spring Application Context.");
final AutowireCapableBeanFactory beanFactory = this.applicationContext.getAutowireCapableBeanFactory();
beanFactory.initializeBean(this.resourceResolver, "springResourceResolver");
}
/**
* <p>
* This method <b>should not be called</b>, because the resource resolver is
* fixed to be {@link org.thymeleaf.spring4.resourceresolver.SpringResourceResourceResolver}. Every execution of this method
* will result in an exception.
* </p>
* <p>
* If you need to select a different resource resolver, use the {@link org.thymeleaf.templateresolver.TemplateResolver}
* class instead.
* </p>
*
* @param resourceResolver the new resource resolver
*/
@Override
public void setResourceResolver(final IResourceResolver resourceResolver) {
throw new ConfigurationException(
"Cannot set a resource resolver on " + this.getClass().getName() + ". If " +
"you want to set your own resource resolver, use " + TemplateResolver.class.getName() +
"instead");
}
}