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    1   /*
    2    * Copyright 2003-2004 The Apache Software Foundation
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *     http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package org.apache.commons.jxpath;
    17
    18  import java.util.List;
    19
    20  /***
    21   * NodeSet interface can be used as the type of an argument of an extension
    22   * function.  Alternatively, the function can declare the argument as
    23   * a Collection (or List or Set), in which case it will be given a collection
    24   * of <i>values</i> matching the path.
    25   *
    26   * @author <a href="mailto:dmitri@apache.org">Dmitri Plotnikov</a>
    27   * @version $Id: NodeSet.java,v 1.3 2004/02/29 14:17:42 scolebourne Exp $
    28   */
    29  public interface NodeSet {
    30
    31      /***
    32       * Returns a list of nodes.
    33       */
    34      List getNodes();
    35
    36      /***
    37       * Returns a list of pointers for all nodes in the set.
    38       */
    39      List getPointers();
    40
    41      /***
    42       * Returns a list of values of all contained pointers.
    43       */
    44      List getValues();
    45
    46  }