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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
EmptyPacket.java | 0% | 0% | 0% | 0% |
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1 |
/**
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*
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* Copyright 2004 Hiram Chirino
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package org.activeio.packet;
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import java.io.DataOutput;
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import java.io.IOException;
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import java.io.OutputStream;
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import org.activeio.Packet;
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/**
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* Provides a Packet implementation that is directly backed by a <code>byte[0]</code>.
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*
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* @version $Revision$
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*/
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final public class EmptyPacket implements Packet { |
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static final public EmptyPacket EMPTY_PACKET = new EmptyPacket(); |
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static final byte EMPTY_BYTE_ARRAY[] = new byte[]{}; |
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static final ByteSequence EMPTY_BYTE_SEQUENCE = new ByteSequence(EMPTY_BYTE_ARRAY,0,0); |
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36 | 0 |
private EmptyPacket() {
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} |
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39 | 0 |
public void writeTo(OutputStream out) throws IOException { |
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} |
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41 | 0 |
public void writeTo(DataOutput out) throws IOException { |
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} |
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43 |
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44 | 0 |
public int position() { |
45 | 0 |
return 0;
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} |
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47 |
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48 | 0 |
public void position(int position) { |
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} |
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50 |
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51 | 0 |
public int limit() { |
52 | 0 |
return 0;
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} |
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55 | 0 |
public void limit(int limit) { |
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} |
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58 | 0 |
public void flip() { |
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} |
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61 | 0 |
public int remaining() { |
62 | 0 |
return 0;
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} |
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65 | 0 |
public void rewind() { |
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} |
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68 | 0 |
public boolean hasRemaining() { |
69 | 0 |
return false; |
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} |
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72 | 0 |
public void clear() { |
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} |
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75 | 0 |
public int capacity() { |
76 | 0 |
return 0;
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} |
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79 | 0 |
public Packet slice() {
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80 | 0 |
return this; |
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} |
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82 |
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83 | 0 |
public Packet duplicate() {
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84 | 0 |
return this; |
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} |
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87 | 0 |
public Object duplicate(ClassLoader cl) throws IOException { |
88 | 0 |
try {
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89 | 0 |
Class clazz = cl.loadClass(EmptyPacket.class.getName());
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90 | 0 |
return clazz.getField("EMPTY_PACKET").get(null); |
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} catch (Throwable e) {
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92 | 0 |
throw (IOException)new IOException("Could not duplicate packet in a different classloader: "+e).initCause(e); |
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} |
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} |
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/**
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* @see org.activeio.Packet#read()
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*/
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99 | 0 |
public int read() { |
100 | 0 |
return -1;
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} |
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/**
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* @see org.activeio.Packet#read(byte[], int, int)
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*/
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106 | 0 |
public int read(byte[] data, int offset, int length) { |
107 | 0 |
return -1;
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} |
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/**
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* @see org.activeio.Packet#write(int)
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*/
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113 | 0 |
public boolean write(int data) { |
114 | 0 |
return false; |
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} |
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/**
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* @see org.activeio.Packet#write(byte[], int, int)
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*/
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120 | 0 |
public int write(byte[] data, int offset, int length) { |
121 | 0 |
return -1;
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} |
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124 | 0 |
public ByteSequence asByteSequence() {
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125 | 0 |
return EMPTY_BYTE_SEQUENCE;
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} |
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127 |
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128 | 0 |
public byte[] sliceAsBytes() { |
129 | 0 |
return EMPTY_BYTE_ARRAY;
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} |
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/**
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* @param dest
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* @return the number of bytes read into the dest.
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*/
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136 | 0 |
public int read(Packet dest) { |
137 | 0 |
return -1;
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} |
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139 |
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140 | 0 |
public String toString() {
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141 | 0 |
return "{position="+position()+",limit="+limit()+",capacity="+capacity()+"}"; |
142 |
} |
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143 |
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144 | 0 |
public Object narrow(Class target) {
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145 | 0 |
if( target.isAssignableFrom(getClass()) ) {
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146 | 0 |
return this; |
147 |
} |
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148 | 0 |
return null; |
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} |
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150 |
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151 | 0 |
public void dispose() { |
152 |
} |
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} |
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