001    // Copyright 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.record;
016    
017    import org.apache.tapestry.web.WebSession;
018    
019    /**
020     * Callback interface used to operate on a subset of attributes stored within a
021     * {@link org.apache.tapestry.web.WebSession} whose names match a particular prefix.
022     * 
023     * @author Howard M. Lewis Ship
024     * @since 4.0
025     */
026    public interface WebSessionAttributeCallback
027    {
028        /**
029         * Invoked for each matching attribute.
030         * 
031         * @param session
032         *            session containing the attribute
033         * @param name
034         *            full name of the attribute
035         */
036        void handleAttribute(WebSession session, String name);
037    }