/[classpath]/classpath/java/nio/channels/Pipe.java
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revision 1.4 by mkoch, Mon Nov 11 16:19:30 2002 UTC revision 1.5 by mkoch, Wed Nov 13 07:27:51 2002 UTC
# Line 40  package java.nio.channels; Line 40  package java.nio.channels;
40  import java.nio.channels.spi.AbstractSelectableChannel;  import java.nio.channels.spi.AbstractSelectableChannel;
41  import java.nio.channels.spi.SelectorProvider;  import java.nio.channels.spi.SelectorProvider;
42    
43    /**
44     * @author Michael Koch
45     * @since 1.4
46     */
47  public abstract class Pipe  public abstract class Pipe
48  {  {
49    public abstract static class SinkChannel    public abstract static class SinkChannel
50      extends AbstractSelectableChannel      extends AbstractSelectableChannel
51      implements WritableByteChannel, GatheringByteChannel      implements WritableByteChannel, GatheringByteChannel
52    {    {
53      protected SinkChannel(SelectorProvider provider)      /**
54         * Initializes the channel.
55         */
56        protected SinkChannel (SelectorProvider provider)
57      {      {
58        super (provider);        super (provider);
59      }      }
60    
61        /**
62         * Returns an operation set that is valid on this channel.
63         *
64         * The only valid operation on this channel is @see SelectionKey.OP_WRITE.
65         */
66        public final int validOps ()
67        {
68          return SelectionKey.OP_WRITE;
69        }
70    }    }
71    
72    public abstract static class SourceChannel    public abstract static class SourceChannel
73      extends AbstractSelectableChannel      extends AbstractSelectableChannel
74      implements ReadableByteChannel, ScatteringByteChannel      implements ReadableByteChannel, ScatteringByteChannel
75    {    {
76      protected SourceChannel(SelectorProvider provider)      /**
77         * Initializes the channel.
78         */
79        protected SourceChannel (SelectorProvider provider)
80      {      {
81        super (provider);        super (provider);
82      }      }
83    
84        /**
85         * Returns an operation set that is valid on this channel.
86         *
87         * The only valid operation on this channel is @see SelectionKey.OP_READ.
88         */
89        public final int validOps ()
90        {
91          return SelectionKey.OP_READ;
92        }
93    }    }
94        
95      /**
96       * Initializes the pipe.
97       */
98    protected Pipe()    protected Pipe()
99    {    {
100    }    }
101    
102      /**
103       * Opens a pipe.
104       *
105       * @exception IOException If an error occurs
106       */
107    public static Pipe open()    public static Pipe open()
108    {    {
109      return null;      return SelectorProvider.provider ().openPipe();
110    }    }
111        
112      /**
113       * Returns a pipe's sink channel.
114       */
115    public abstract Pipe.SinkChannel sink();    public abstract Pipe.SinkChannel sink();
116    
117      /**
118       * Returns a pipe's source channel
119       */
120    public abstract Pipe.SourceChannel source();      public abstract Pipe.SourceChannel source();  
121  }  }

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