package fr.in2p3.jsaga.impl.job.instance.stream;
   
   import fr.in2p3.jsaga.impl.job.instance.AbstractSyncJobImpl;
   import org.ogf.saga.error.DoesNotExistException;
   import org.ogf.saga.error.NoSuccessException;
   
   import java.io.*;
   
   /* ***************************************************
  * *** Centre de Calcul de l'IN2P3 - Lyon (France) ***
  * ***             http://cc.in2p3.fr/             ***
  * ***************************************************
  * File:   PreconnectedStderrInputStream
  * Author: Sylvain Reynaud (sreynaud@in2p3.fr)
  * Date:   23 mai 2008
  * ***************************************************
  * Description:                                      */
  /**
   *
   */
  public class PreconnectedStderrInputStream extends JobStderrInputStream {
      private OutputStreamContainer m_out;
  
      /** constructor for StreamableJobInteractiveSet */
      public PreconnectedStderrInputStream(AbstractSyncJobImpl job) {
          super(job);
          m_out = new OutputStreamContainer();
      }
  
      public OutputStream getOutputStreamContainer() {
          return m_out;
      }
  
      /////////////////////////////////// interface InputStream ///////////////////////////////////
  
      public int read() throws IOException {return this.stream().read();}
      public int read(byte[] b) throws IOException {return this.stream().read(b);}
      public int read(byte[] b, int off, int len) throws IOException {return this.stream().read(b, off, len);}
      public long skip(long n) throws IOException {return this.stream().skip(n);}
      public void close() throws IOException {this.stream().close();}
  
      /////////////////////////////////////// private method ///////////////////////////////////////
  
      private InputStream stream() throws IOException {
          try {
              switch(m_job.getState()) {
                  case DONE:
                  case CANCELED:
                  case FAILED:
                      return m_out.getInputStream();
                  case RUNNING:
                      throw new NoSuccessException("Not supported yet...");
                  default:
                      throw new DoesNotExistException("Stderr is not available because job is neither finished nor running");
              }
          } catch (Exception e) {
              throw new IOException(e.getMessage());
          }
      }
  }