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Spring Framework example source code file (SessionAttributeStore.java)

This example Spring Framework source code file (SessionAttributeStore.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

object, object, sessionattributestore, sessionattributestore, string, string

The Spring Framework SessionAttributeStore.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.web.bind.support;

import org.springframework.web.context.request.WebRequest;

/**
 * Strategy interface for storing model attributes in a backend session.
 *
 * @author Juergen Hoeller
 * @since 2.5
 * @see org.springframework.web.bind.annotation.SessionAttributes
 */
public interface SessionAttributeStore {

	/**
	 * Store the supplied attribute in the backend session.
	 * <p>Can be called for new attributes as well as for existing attributes.
	 * In the latter case, this signals that the attribute value may have been modified.
	 * @param request the current request
	 * @param attributeName the name of the attribute
	 * @param attributeValue the attribute value to store
	 */
	void storeAttribute(WebRequest request, String attributeName, Object attributeValue);

	/**
	 * Retrieve the specified attribute from the backend session.
	 * <p>This will typically be called with the expectation that the
	 * attribute is already present, with an exception to be thrown
	 * if this method returns <code>null.
	 * @param request the current request
	 * @param attributeName the name of the attribute
	 * @return the current attribute value, or <code>null if none
	 */
	Object retrieveAttribute(WebRequest request, String attributeName);

	/**
	 * Clean up the specified attribute in the backend session.
	 * <p>Indicates that the attribute name will not be used anymore.
	 * @param request the current request
	 * @param attributeName the name of the attribute
	 */
	void cleanupAttribute(WebRequest request, String attributeName);

}

Other Spring Framework examples (source code examples)

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