org.impalaframework.web.helper.WebServletUtils Maven / Gradle / Ivy
/*
* Copyright 2007-2010 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.impalaframework.web.helper;
import javax.servlet.ServletContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.impalaframework.facade.ModuleManagementFacade;
import org.impalaframework.util.ObjectUtils;
import org.impalaframework.web.WebConstants;
import org.springframework.util.Assert;
/**
* Class with static convenience methods for publish, accessing, and removing ServletContext-based state.
* @author Phil Zoio
*/
public abstract class WebServletUtils {
private static final Log logger = LogFactory.getLog(WebServletUtils.class);
public static ModuleManagementFacade getModuleManagementFacade(ServletContext servletContext) {
Assert.notNull(servletContext);
final String attributeName = WebConstants.IMPALA_FACTORY_ATTRIBUTE;
final Object attribute = servletContext.getAttribute(attributeName);
if (logger.isDebugEnabled()) {
logger.debug("Retrieved ModuleManagementFacade from ServletContext with attribute name '" + attributeName + "': " + attribute);
}
return ObjectUtils.cast(attribute, ModuleManagementFacade.class);
}
}