001    package org.apache.ojb.broker.metadata;
002    
003    /* Copyright 2002-2005 The Apache Software Foundation
004     *
005     * Licensed under the Apache License, Version 2.0 (the "License");
006     * you may not use this file except in compliance with the License.
007     * You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    import java.io.Serializable;
019    
020    /**
021     * This interface defines methods that are required for an object
022     * to support the nested "attribute" tag in the repository file.
023     * @author              Ron Gallagher
024     */
025    public interface AttributeContainer extends Serializable
026    {
027            /**
028         * Store the specified attribute and it's value.
029         * @param attributeName the name of the attribute to retrieve
030         * @param attributeValue the attribute's value
031         */
032        public void addAttribute(String attributeName, String attributeValue);
033    
034        /**
035         * Get the value of an attribute
036         * @param attributeName the attribute to retrieve
037         * @param defaultValue the value to return if the attribute is not present
038         * @return the attribute value
039         */
040        public String getAttribute(String attributeName, String defaultValue);
041        /**
042         * Get the value of an attribute
043         * @param attributeName the attribute to retrieve
044         * @return the attribute value
045         */
046        public String getAttribute(String attributeName);
047    }
048