Clover coverage report -

Coverage timestamp: Sun Nov 1 2009 23:08:24 UTC

FRAMES NO FRAMES

file stats:	LOC:	97		Methods:	7
	NCLOC:	54		Classes:	2

Source file

Conditionals

Statements

Methods

TOTAL

ObjectQueue.java

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