| /* |
| * 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. |
| */ |
| package org.apache.lucene.misc; |
| |
| import java.nio.file.Paths; |
| import java.util.Locale; |
| |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.FSDirectory; |
| import org.apache.lucene.util.SuppressForbidden; |
| import org.apache.lucene.index.DirectoryReader; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.Term; |
| |
| /** |
| * Utility to get document frequency and total number of occurrences (sum of the tf for each doc) of a term. |
| */ |
| @SuppressForbidden(reason = "System.out required: command line tool") |
| public class GetTermInfo { |
| |
| public static void main(String[] args) throws Exception { |
| |
| FSDirectory dir = null; |
| String inputStr = null; |
| String field = null; |
| |
| if (args.length == 3) { |
| dir = FSDirectory.open(Paths.get(args[0])); |
| field = args[1]; |
| inputStr = args[2]; |
| } else { |
| usage(); |
| System.exit(1); |
| } |
| |
| getTermInfo(dir,new Term(field, inputStr)); |
| } |
| |
| public static void getTermInfo(Directory dir, Term term) throws Exception { |
| IndexReader reader = DirectoryReader.open(dir); |
| System.out.printf(Locale.ROOT, "%s:%s \t totalTF = %,d \t doc freq = %,d \n", |
| term.field(), term.text(), reader.totalTermFreq(term), reader.docFreq(term)); |
| } |
| |
| private static void usage() { |
| System.out |
| .println("\n\nusage:\n\t" |
| + "java " + GetTermInfo.class.getName() + " <index dir> field term \n\n"); |
| } |
| } |