package com.laoer.bbscs.lucene;/** * 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. */import java.io.File;import java.io.Reader;import java.io.FileInputStream;import java.io.BufferedReader;import java.io.InputStreamReader;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.document.DateField;/** A utility for making Lucene Documents from a File. */public class FileDocument {  /** Makes a document for a File.    <p>    The document has three fields:    <ul>    <li><code>path</code>--containing the pathname of the file, as a stored,    tokenized field;    <li><code>modified</code>--containing the last modified date of the file as    a keyword field as encoded by <a    href="lucene.document.DateField.html">DateField</a>; and    <li><code>contents</code>--containing the full contents of the file, as a    Reader field;    */  public static Document Document(File f)       throws java.io.FileNotFoundException {	     // make a new, empty document    Document doc = new Document();    // Add the path of the file as a field named "path".  Use a Text field, so    // that the index stores the path, and so that the path is searchable    doc.add(Field.Text("path", f.getPath()));    // Add the last modified date of the file a field named "modified".  Use a    // Keyword field, so that it's searchable, but so that no attempt is made    // to tokenize the field into words.    doc.add(Field.Keyword("modified",			  DateField.timeToString(f.lastModified())));    // Add the contents of the file a field named "contents".  Use a Text    // field, specifying a Reader, so that the text of the file is tokenized.    // ?? why doesn't FileReader work here ??    FileInputStream is = new FileInputStream(f);    Reader reader = new BufferedReader(new InputStreamReader(is));    doc.add(Field.Text("contents", reader));    // return the document    return doc;  }  private FileDocument() {}}