- Limit to an optional field; reindented (die tabs, die), ASF License 2.0

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@376393 13f79535-47bb-0310-9956-ffa450edef68

contrib/miscellaneous/src/java/org/apache/lucene/misc/HighFreqTerms.java

@@ -1,57 +1,19 @@
 package org.apache.lucene.misc;
 
-/* ====================================================================
+/**
- * The Apache Software License, Version 1.1
+  * Copyright 2004 The Apache Software Foundation
   *
- * Copyright (c) 2001,2004 The Apache Software Foundation.  All rights
+  * Licensed under the Apache License, Version 2.0 (the "License");
- * reserved.
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
   *
- * Redistribution and use in source and binary forms, with or without
+  *     http://www.apache.org/licenses/LICENSE-2.0
- * modification, are permitted provided that the following conditions
- * are met:
   *
- * 1. Redistributions of source code must retain the above copyright
+  * Unless required by applicable law or agreed to in writing, software
- *    notice, this list of conditions and the following disclaimer.
+  * distributed under the License is distributed on an "AS IS" BASIS,
- *
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * 2. Redistributions in binary form must reproduce the above copyright
+  * See the License for the specific language governing permissions and
- *    notice, this list of conditions and the following disclaimer in
+  * limitations under the License.
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- *    if any, must include the following acknowledgment:
- *       "This product includes software developed by the
- *        Apache Software Foundation (http://www.apache.org/)."
- *    Alternately, this acknowledgment may appear in the software itself,
- *    if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" and
- *    "Apache Lucene" must not be used to endorse or promote products
- *    derived from this software without prior written permission. For
- *    written permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- *    "Apache Lucene", nor may "Apache" appear in their name, without
- *    prior written permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation.  For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
   */
 
 import org.apache.lucene.index.IndexReader;
@@ -72,8 +34,12 @@ public class HighFreqTerms {
 
   public static void main(String[] args) throws Exception {
     IndexReader reader = null;
+    String field = null;
     if (args.length == 1) {
       reader = IndexReader.open(args[0]);
+    } else if (args.length == 2) {
+      reader = IndexReader.open(args[0]);
+      field = args[1];
     } else {
       usage();
       System.exit(1);
@@ -82,10 +48,18 @@ public class HighFreqTerms {
     TermInfoQueue tiq = new TermInfoQueue(numTerms);
     TermEnum terms = reader.terms();
 
+    if (field != null) { 
+      while (terms.next()) {
+        if (terms.term().field().equals(field)) {
+          tiq.insert(new TermInfo(terms.term(), terms.docFreq()));
+        }
+      }
+    }
+    else {
       while (terms.next()) {
         tiq.insert(new TermInfo(terms.term(), terms.docFreq()));
       }
-
+    }
     while (tiq.size() != 0) {
       TermInfo termInfo = (TermInfo) tiq.pop();
       System.out.println(termInfo.term + " " + termInfo.docFreq);
@@ -97,7 +71,7 @@ public class HighFreqTerms {
   private static void usage() {
     System.out.println(
          "\n\n"
-				+ "java org.apache.lucene.misc.HighFreqTerms <index dir>\n\n");
+         + "java org.apache.lucene.misc.HighFreqTerms <index dir> [field]\n\n");
   }
 }
 
@@ -114,7 +88,6 @@ final class TermInfoQueue extends PriorityQueue {
   TermInfoQueue(int size) {
     initialize(size);
   }
-
   protected final boolean lessThan(Object a, Object b) {
     TermInfo termInfoA = (TermInfo) a;
     TermInfo termInfoB = (TermInfo) b;