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Java > Open Source Codes > com > go > trove > net > LazySocketFactory


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52
53 package com.go.trove.net;
54
55 import java.net.*;
56
57 /******************************************************************************
58  * A socket implementation that lazily establishs a connection. It only
59  * connects when actually needed. Setting options and getting I/O streams will
60  * not force a connection to be established. As soon as a read or write
61  * operation is performed, a connection is established.
62  * <p>
63  * If the first write operation requires a connection to be established, then a
64  * recycled connection is requested. The connection is tested by writing the
65  * data to it. If this fails, a new connection is requested and the operation
66  * is tried again.
67  *
68  * @author Brian S O'Neill
69  * @version
70  * <!--$$Revision:--> 4 <!-- $-->, <!--$$JustDate:--> 00/12/05 <!-- $-->
71  */
72 public class LazySocketFactory implements SocketFactory {
73     private final SocketFactory mFactory;
74
75     public LazySocketFactory(SocketFactory factory) {
76         mFactory = factory;
77     }
78
79     public InetAddressAndPort getInetAddressAndPort() {
80         return mFactory.getInetAddressAndPort();
81     }
82
83     public InetAddressAndPort getInetAddressAndPort(Object JavaDoc session) {
84         return mFactory.getInetAddressAndPort(session);
85     }
86     
87     public long getDefaultTimeout() {
88         return mFactory.getDefaultTimeout();
89     }
90
91     public CheckedSocket createSocket()
92         throws ConnectException, SocketException
93     {
94         return mFactory.createSocket();
95     }
96
97     public CheckedSocket createSocket(Object JavaDoc session)
98         throws ConnectException, SocketException
99     {
100         return mFactory.createSocket(session);
101     }
102
103     public CheckedSocket createSocket(long timeout)
104         throws ConnectException, SocketException
105     {
106         return mFactory.createSocket(timeout);
107     }
108
109     public CheckedSocket createSocket(Object JavaDoc session, long timeout)
110         throws ConnectException, SocketException
111     {
112         return mFactory.createSocket(session, timeout);
113     }
114
115     /**
116      * Returns a socket that will lazily connect.
117      */
118     public CheckedSocket getSocket() throws ConnectException, SocketException {
119         return CheckedSocket.check(new LazySocket(mFactory));
120     }
121
122     /**
123      * Returns a socket that will lazily connect.
124      */
125     public CheckedSocket getSocket(Object JavaDoc session)
126         throws ConnectException, SocketException
127     {
128         return CheckedSocket.check(new LazySocket(mFactory, session));
129     }
130
131     /**
132      * Returns a socket that will lazily connect.
133      */
134     public CheckedSocket getSocket(long timeout)
135         throws ConnectException, SocketException
136     {
137         return CheckedSocket.check(new LazySocket(mFactory, timeout));
138     }
139
140     /**
141      * Returns a socket that will lazily connect.
142      */
143     public CheckedSocket getSocket(Object JavaDoc session, long timeout)
144         throws ConnectException, SocketException
145     {
146         return CheckedSocket.check(new LazySocket(mFactory, session, timeout));
147     }
148
149     public void recycleSocket(CheckedSocket cs)
150         throws SocketException, IllegalArgumentException JavaDoc
151     {
152         if (cs == null) {
153             return;
154         }
155
156         // Bust through two layers of wrapping to get at actual socket.
157
158         Socket s = cs.mSocket;
159         if (s instanceof LazySocket) {
160             cs = ((LazySocket)s).recycle();
161             if (cs == null) {
162                 return;
163             }
164         }
165
166         mFactory.recycleSocket(cs);
167     }
168
169     public void clear() {
170         mFactory.clear();
171     }
172
173     public int getAvailableCount(){
174         return mFactory.getAvailableCount();
175     }
176 }
177
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