/*
* 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.web.context.request;
/**
* Request-backed {@link org.springframework.beans.factory.config.Scope}
* implementation.
*
* <p>Relies on a thread-bound {@link RequestAttributes} instance, which
* can be exported through {@link RequestContextListener},
* {@link org.springframework.web.filter.RequestContextFilter} or
* {@link org.springframework.web.servlet.DispatcherServlet}.
*
* <p>This <code>Scope</code> will also work for Portlet environments,
* through an alternate <code>RequestAttributes</code> implementation
* (as exposed out-of-the-box by Spring's
* {@link org.springframework.web.portlet.DispatcherPortlet}.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @author Rob Harrop
* @since 2.0
* @see RequestContextHolder#currentRequestAttributes()
* @see RequestAttributes#SCOPE_REQUEST
* @see RequestContextListener
* @see org.springframework.web.filter.RequestContextFilter
* @see org.springframework.web.servlet.DispatcherServlet
* @see org.springframework.web.portlet.DispatcherPortlet
*/
public class RequestScope extends AbstractRequestAttributesScope {
@Override
protected int getScope() {
return RequestAttributes.SCOPE_REQUEST;
}
/**
* There is no conversation id concept for a request, so this method
* returns <code>null</code>.
*/
public String getConversationId() {
return null;
}
}
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