package org.apache.lucene.index;/** * Copyright 2004 The Apache Software Foundation * * Licensed 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. *//** Provides access to stored term vector of  *  a document field. */public interface TermFreqVector {  /**   *    * @return The field this vector is associated with.   *    */   public String getField();    /**    * @return The number of terms in the term vector.   */  public int size();  /**    * @return An Array of term texts in ascending order.   */  public String[] getTerms();  /** Array of term frequencies. Locations of the array correspond one to one   *  to the terms in the array obtained from <code>getTerms</code>   *  method. Each location in the array contains the number of times this   *  term occurs in the document or the document field.   */  public int[] getTermFrequencies();    /** Return an index in the term numbers array returned from   *  <code>getTerms</code> at which the term with the specified   *  <code>term</code> appears. If this term does not appear in the array,   *  return -1.   */  public int indexOf(String term);  /** Just like <code>indexOf(int)</code> but searches for a number of terms   *  at the same time. Returns an array that has the same size as the number   *  of terms searched for, each slot containing the result of searching for   *  that term number.   *   *  @param terms array containing terms to look for   *  @param start index in the array where the list of terms starts   *  @param len the number of terms in the list   */  public int[] indexesOf(String[] terms, int start, int len);}