ActiveIO - 1.0

Clover coverage report - ActiveIO - 1.0 Coverage timestamp: Fri Apr 22 2005 14:27:22 PDT FRAMES NO FRAMES |
file stats: | LOC: | 154 |  | Methods: | 26
| NCLOC: | 86 |  | Classes: | 1
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Source file | Conditionals | Statements | Methods | TOTAL
EmptyPacket.java | 0% | 0% | 0% | 0% |

1 |  |
     /**
2 |  |
      *
3 |  |
      * Copyright 2004 Hiram Chirino
4 |  |
      *
5 |  |
      * Licensed under the Apache License, Version 2.0 (the "License"); you may not
6 |  |
      * use this file except in compliance with the License. You may obtain a copy of
7 |  |
      * 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, WITHOUT
13 |  |
      * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
14 |  |
      * License for the specific language governing permissions and limitations under
15 |  |
      * the License.
16 |  |
      */
17 |  |
     package org.activeio.packet;
18 |  |
19 |  |
     import java.io.DataOutput;
20 |  |
     import java.io.IOException;
21 |  |
     import java.io.OutputStream;
22 |  |
23 |  |
     import org.activeio.Packet;
24 |  |
25 |  |
     /**
26 |  |
      * Provides a Packet implementation that is directly backed by a <code>byte[0]</code>.
27 |  |
      *
28 |  |
      * @version $Revision$
29 |  |
      */
30 |  |
     final public class EmptyPacket implements Packet {
31 |  |
32 |  |
         static final public EmptyPacket EMPTY_PACKET = new EmptyPacket();
33 |  |
         static final byte EMPTY_BYTE_ARRAY[] = new byte[]{};
34 |  |
         static final ByteSequence EMPTY_BYTE_SEQUENCE = new ByteSequence(EMPTY_BYTE_ARRAY,0,0);
35 |  |
36 | 0 |
         private EmptyPacket() {
37 |  |
         }
38 |  |
39 | 0 |
         public void writeTo(OutputStream out) throws IOException {
40 |  |
         }
41 | 0 |
         public void writeTo(DataOutput out) throws IOException {
42 |  |
         }
43 |  |
44 | 0 |
         public int position() {
45 | 0 |
             return 0;
46 |  |
         }
47 |  |
48 | 0 |
         public void position(int position) {
49 |  |
         }
50 |  |
51 | 0 |
         public int limit() {
52 | 0 |
             return 0;
53 |  |
         }
54 |  |
55 | 0 |
         public void limit(int limit) {
56 |  |
         }
57 |  |
58 | 0 |
         public void flip() {
59 |  |
         }
60 |  |
61 | 0 |
         public int remaining() {
62 | 0 |
             return 0;
63 |  |
         }
64 |  |
65 | 0 |
         public void rewind() {
66 |  |
         }
67 |  |
68 | 0 |
         public boolean hasRemaining() {
69 | 0 |
             return false;
70 |  |
         }
71 |  |
72 | 0 |
         public void clear() {
73 |  |
         }
74 |  |
75 | 0 |
         public int capacity() {
76 | 0 |
             return 0;
77 |  |
         }
78 |  |
79 | 0 |
         public Packet slice() {
80 | 0 |
             return this;
81 |  |
         }
82 |  |
83 | 0 |
         public Packet duplicate() {
84 | 0 |
             return this;
85 |  |
         }
86 |  |
87 | 0 |
         public Object duplicate(ClassLoader cl) throws IOException {
88 | 0 |
             try {
89 | 0 |
                 Class clazz = cl.loadClass(EmptyPacket.class.getName());
90 | 0 |
                 return clazz.getField("EMPTY_PACKET").get(null);
91 |  |
             } catch (Throwable e) {
92 | 0 |
                 throw (IOException)new IOException("Could not duplicate packet in a different classloader: "+e).initCause(e);
93 |  |
             }
94 |  |
         }
95 |  |
96 |  |
         /**
97 |  |
          * @see org.activeio.Packet#read()
98 |  |
          */
99 | 0 |
         public int read() {
100 | 0 |
             return -1;
101 |  |
         }
102 |  |
103 |  |
         /**
104 |  |
          * @see org.activeio.Packet#read(byte[], int, int)
105 |  |
          */
106 | 0 |
         public int read(byte[] data, int offset, int length) {
107 | 0 |
             return -1;
108 |  |
         }
109 |  |
110 |  |
         /**
111 |  |
          * @see org.activeio.Packet#write(int)
112 |  |
          */
113 | 0 |
         public boolean write(int data) {
114 | 0 |
             return false;
115 |  |
         }
116 |  |
117 |  |
         /**
118 |  |
          * @see org.activeio.Packet#write(byte[], int, int)
119 |  |
          */
120 | 0 |
         public int write(byte[] data, int offset, int length) {
121 | 0 |
             return -1;
122 |  |
         }
123 |  |
124 | 0 |
         public ByteSequence asByteSequence() {
125 | 0 |
             return EMPTY_BYTE_SEQUENCE;
126 |  |
         }
127 |  |
128 | 0 |
         public byte[] sliceAsBytes() {
129 | 0 |
             return EMPTY_BYTE_ARRAY;
130 |  |
         }
131 |  |
132 |  |
         /**
133 |  |
          * @param dest
134 |  |
          * @return the number of bytes read into the dest.
135 |  |
          */
136 | 0 |
         public int read(Packet dest) {
137 | 0 |
             return -1;
138 |  |
         }
139 |  |
140 | 0 |
         public String toString() {
141 | 0 |
             return "{position="+position()+",limit="+limit()+",capacity="+capacity()+"}";
142 |  |
         }
143 |  |
144 | 0 |
         public Object narrow(Class target) {
145 | 0 |
             if( target.isAssignableFrom(getClass()) ) {
146 | 0 |
                 return this;
147 |  |
             }
148 | 0 |
             return null;
149 |  |
         }
150 |  |
151 | 0 |
         public void dispose() {
152 |  |
         }
153 |  |
154 |  |
     }