package org.apache.lucene.index;/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. *//** Extends <code>TermFreqVector</code> to provide additional information about *  positions in which each of the terms is found. A TermPositionVector not necessarily * contains both positions and offsets, but at least one of these arrays exists. */public interface TermPositionVector extends TermFreqVector {      /** Returns an array of positions in which the term is found.     *  Terms are identified by the index at which its number appears in the     *  term String array obtained from the <code>indexOf</code> method.     *  May return null if positions have not been stored.     */    public int[] getTermPositions(int index);      /**     * Returns an array of TermVectorOffsetInfo in which the term is found.     * May return null if offsets have not been stored.     *      * @see org.apache.lucene.analysis.Token     *      * @param index The position in the array to get the offsets from     * @return An array of TermVectorOffsetInfo objects or the empty list     */     public TermVectorOffsetInfo [] getOffsets(int index);}