Clover coverage report -
Coverage timestamp: Sun Nov 1 2009 23:08:24 UTC
file stats: LOC: 97   Methods: 7
NCLOC: 54   Classes: 2
 
 Source file Conditionals Statements Methods TOTAL
ObjectQueue.java 0% 0% 0% 0%
coverage
 1    /*
 2    * Licensed to the Apache Software Foundation (ASF) under one or more
 3    * contributor license agreements. See the NOTICE file distributed with
 4    * this work for additional information regarding copyright ownership.
 5    * The ASF licenses this file to You under the Apache License, Version 2.0
 6    * (the "License"); you may not use this file except in compliance with
 7    * the License. You may obtain a copy of the License at
 8    *
 9    * http://www.apache.org/licenses/LICENSE-2.0
 10    *
 11    * Unless required by applicable law or agreed to in writing, software
 12    * distributed under the License is distributed on an "AS IS" BASIS,
 13    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14    * See the License for the specific language governing permissions and
 15    * limitations under the License.
 16    *
 17    * $Id: ObjectQueue.java 541508 2007-05-25 01:54:12Z vgritsenko $
 18    */
 19   
 20    package org.apache.xindice.util;
 21   
 22    import java.io.Serializable;
 23   
 24    /**
 25    * ObjectQueue is a simple linked list implemention that can be used
 26    * for FIFO queuing. The benefit of ObjectQueue over Sun's Queue
 27    * implementation is that it is not an extension of ArrayList and doesn't
 28    * suffer from ArrayList's resizing performance limitations.
 29    *
 30    * @version $Revision: 541508 $, $Date: 2007-05-24 18:54:12 -0700 (Thu, 24 May 2007) $
 31    */
 32    public final class ObjectQueue implements Serializable {
 33    static final long serialVersionUID = 2573729619402197579L;
 34   
 35    private ObjectQueueItem first = null;
 36    private ObjectQueueItem last = null;
 37    private int size = 0;
 38   
 39  0 public synchronized void add(Object value) {
 40  0 size++;
 41  0 ObjectQueueItem q = new ObjectQueueItem(value);
 42  0 if (last != null) {
 43  0 last.next = q;
 44    }
 45  0 last = q;
 46  0 if (first == null) {
 47  0 first = q;
 48    }
 49    }
 50   
 51  0 public synchronized Object remove() {
 52  0 ObjectQueueItem q = first;
 53  0 if (q != null) {
 54  0 size--;
 55  0 first = q.next;
 56  0 if (first == null) {
 57  0 last = null;
 58    }
 59  0 return q.value;
 60    } else {
 61  0 return null;
 62    }
 63    }
 64   
 65  0 public boolean isEmpty() {
 66  0 return (size == 0);
 67    }
 68   
 69  0 public int size() {
 70  0 return size;
 71    }
 72   
 73  0 public synchronized Object peek() {
 74  0 return first != null ? first.value
 75    : null;
 76    }
 77   
 78  0 public synchronized void clear() {
 79  0 size = 0;
 80  0 first = null;
 81  0 last = null;
 82    }
 83   
 84    /**
 85    * ObjectQueueItem
 86    */
 87   
 88    private class ObjectQueueItem implements Serializable {
 89    public Object value;
 90    public ObjectQueueItem next;
 91   
 92  0 public ObjectQueueItem(Object value) {
 93  0 this.value = value;
 94    }
 95    }
 96    }
 97