outputpipe.java

MoMEUnit是一个单元测试的J2ME的应用程序xUnit架构实例。这是来自JUnit框架

package org.momeunit.ant.core;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;

/**
 * Abstract class that every output processing pipe should extend. Provides base
 * functionality. Like setting input stream, requesting pipe etc.
 * 
 * @author Sergio Morozov
 * @version 1.1.2
 */
public abstract class OutputPipe implements Runnable
{

  private InputStream in = null;

  private OutputStream out = null;

  /**
   * Initializes OutputPipe with given {@link InputStream}.
   * 
   * @param pipeIn
   *          the {@link InputStream} to set.
   * @since 1.1
   */
  public OutputPipe(InputStream pipeIn)
  {
    super();
    this.in = pipeIn;
  }

  /**
   * Starts processing input and sending it to a pipe if requested.
   * 
   * @since 1.1
   */
  public void start()
  {
    if (this.getInputStream() != null) new Thread(this).start();
  }

  /**
   * Returns the {@link OutputStream} of the pipe.
   * 
   * @return the {@link OutputStream} of the pipe.
   * @since 1.1
   */
  protected OutputStream getOutpuStream()
  {
    return this.out;
  }

  /**
   * Returns requested {@link InputStream} of pipe.
   * 
   * @return the requested {@link InputStream} of pipe.
   * @throws IOException
   *           if an error occurs while creating pipe.
   * @since 1.1
   */
  public InputStream getPipeOutput() throws IOException
  {
    PipedInputStream res = new PipedInputStream();
    this.out = new PipedOutputStream(res);
    return res;
  }

  /**
   * Returns input of this OutputPipe.
   * 
   * @return the input of this OutputPipe.
   * @since 1.1
   */
  public InputStream getInputStream()
  {
    return this.in;
  }

  /**
   * Sets input of this OutputPipe.
   * 
   * @param in
   *          input of this OutputPipe.
   * @since 1.1
   */
  public void setInputStream(InputStream in)
  {
    this.in = in;
  }

  /*
   * @see java.lang.Runnable#run()
   */
  public void run()
  {}
}