Package org.jcsp.plugNplay
Class Merge2
- java.lang.Object
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- org.jcsp.plugNplay.Merge2
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- All Implemented Interfaces:
CSProcess
public final class Merge2 extends java.lang.Object implements CSProcess
Merges two strictly increasing Integer input streams into one strictly increasing output stream.Process Diagram
in0 ________ -->--| | out in1 | Merge2 |-->-- -->--|________|
Description
Merge2 is a process whose output stream is the ordered merging of the Integers on its input streams. It assumes that each input stream is strictly increasing (i.e. with no repeats) sequence of Integers. It generates a strictly increasing output stream containing all -- and only -- the Integers from its input streams (eliminating any duplicates).Channel Protocols
Input Channels in0, in1 java.lang.Number Both channels can accept data from any subclass of Number. It is possible to send Floats down one channel and Integers down the other. However all values will be converted to ints. Output Channels out java.lang.Integer The output will always be of type Integer. Example
The following example shows how to use Merge2 in a small program. The program also uses some of the other plugNplay processes. The program prints, in ascending order (up to Integer.MAX_VALUE), all integers whose prime factors consist only of 2, 3 and 5. Curious readers may like to reason why the infinitely buffered channels are needed.import org.jcsp.lang.*; import org.jcsp.util.*; import org.jcsp.plugNplay.*; public class Merge2Example { public static void main (String[] argv) { final One2OneChannel[] a = Channel.one2oneArray (4); final One2OneChannel[] b = Channel.one2oneArray (3, new InfiniteBuffer ()); final One2OneChannel c = Channel.one2one (); final One2OneChannel d = Channel.one2one (); final One2OneChannel e = Channel.one2one (); new Parallel ( new CSProcess[] { new Mult (2, a[0].in (), b[0].out ()), new Mult (3, a[1].in (), b[1].out ()), new Mult (5, a[2].in (), b[2].out ()), new Merge2 (b[0].in (), b[1].in (), c.out ()), new Merge2 (c.in (), b[2].in (), d.out ()), new Prefix (1, d.in (), e.out ()), new Delta (e.in (), Channel.getOutputArray (a)), new Printer (a[3].in (), "--> ", "\n") } ).run (); } }
- See Also:
Merge
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Field Summary
Fields Modifier and Type Field Description private ChannelInput
in0
The first input Channelprivate ChannelInput
in1
The second input Channelprivate ChannelOutput
out
The output Channel
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Constructor Summary
Constructors Constructor Description Merge2(ChannelInput in0, ChannelInput in1, ChannelOutput out)
Construct a new Merge2 process with the input channels in0 and in1 and the output channel out.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
run()
The main body of this process.
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Field Detail
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in0
private final ChannelInput in0
The first input Channel
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in1
private final ChannelInput in1
The second input Channel
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out
private final ChannelOutput out
The output Channel
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Constructor Detail
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Merge2
public Merge2(ChannelInput in0, ChannelInput in1, ChannelOutput out)
Construct a new Merge2 process with the input channels in0 and in1 and the output channel out. The ordering of the input channels makes no difference to the behaviour of this process.- Parameters:
in0
- an input channelin1
- an input channelout
- the output channel
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