    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  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    package org.apache.commons.jxpath;
    018
    019    import java.util.List;
    020
    021    /**
    022     * NodeSet interface can be used as the type of an argument of an extension
    023     * function.  Alternatively, the function can declare the argument as
    024     * a Collection (or List or Set), in which case it will be given a collection
    025     * of <i>values</i> matching the path.
    026     *
    027     * @author <a href="mailto:dmitri@apache.org">Dmitri Plotnikov</a>
    028     * @version $Id: NodeSet.java 618149 2008-02-04 02:04:13Z mbenson $
    029     */
    030    public interface NodeSet {
    031
    032        /**
    033         * Returns a list of nodes.
    034         * @return List
    035         */
    036        List getNodes();
    037
    038        /**
    039         * Returns a list of pointers for all nodes in the set.
    040         * @return List
    041         */
    042        List getPointers();
    043
    044        /**
    045         * Returns a list of values of all contained pointers.
    046         * @return List
    047         */
    048        List getValues();
    049
    050    }