uk.ac.rdg.resc.jstyx.gridservice.server
Class SGSInputFile

java.lang.Object
  uk.ac.rdg.resc.jstyx.server.StyxFile
      uk.ac.rdg.resc.jstyx.gridservice.server.SGSInputFile

Direct Known Subclasses:

SGSInputFile.File, SGSInputFile.StdinFile

public abstract class SGSInputFile
extends StyxFile

A file that is used to provide input (as a file or as stdin stream) to a Styx Grid Service.

Author:

Jon Blower $Revision: 609 $ $Date: 2006-03-31 18:09:42 +0100 (Fri, 31 Mar 2006) $ $Log$ Revision 1.5 2005/12/09 18:42:41 jonblower Changed access privileges to write2() to protected Revision 1.4 2005/11/11 21:57:21 jonblower Implemented passing of URLs to input files Revision 1.3 2005/11/09 17:49:58 jonblower Implemented File subclass (representing fixed-name input files) Revision 1.2 2005/11/04 19:29:53 jonblower Moved code that writes to std input to SGSInputFile Revision 1.1 2005/11/04 09:12:23 jonblower Initial import

Nested Class Summary

static class	SGSInputFile.File
static class	SGSInputFile.StdinFile file through which clients can write to the process's input stream directly

Field Summary

protected java.lang.String	candidateURL
protected org.apache.mina.common.ByteBuffer	candidateURLBuffer
protected int	candidateURLLength
protected boolean	dataWritten
protected uk.ac.rdg.resc.jstyx.gridservice.server.StyxGridServiceInstance	instance
protected java.net.URL	url

Fields inherited from class uk.ac.rdg.resc.jstyx.server.StyxFile

auth, directory, lastModifiedTime, name, parent

Method Summary

protected abstract void	closeOutput() Closes the output file or stream.
java.net.URL	getURL()
void	setURL(java.net.URL url)
protected void	write2(StyxFileClient client, long offset, int count, org.apache.mina.common.ByteBuffer data, boolean truncate, int tag) This method does the job of checking for URLs being written to the file.
protected abstract void	writeData(StyxFileClient client, long offset, int count, org.apache.mina.common.ByteBuffer data, boolean truncate, int tag) Writes data to the underlying file or stream

Methods inherited from class uk.ac.rdg.resc.jstyx.server.StyxFile

addChangeListener, addClient, checkSetLastModifiedTime, checkSetLength, checkSetMode, checkSetName, clientConnected, clientDisconnected, contentsChanged, delete, fireContentsChanged, getClient, getDirEntry, getFullPath, getGroup, getLength, getName, getNumClients, getOwner, getParent, getPermissions, getQid, getVersion, incrementVersion, isAppendOnly, isAuth, isDirectory, isExclusive, processAndReplyRead, processAndReplyRead, processAndReplyRead, read, refresh, remove, removeChangeListener, removeClient, rename, replyRead, replyRead, replyRead, replyRead, replyRead, replyWrite, setLastAccessTime, setLastModified, setLength, setMode, setName, setPermissions, setReadOnly, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

protected uk.ac.rdg.resc.jstyx.gridservice.server.StyxGridServiceInstance instance

dataWritten

protected boolean dataWritten

candidateURLBuffer

protected org.apache.mina.common.ByteBuffer candidateURLBuffer

candidateURL

protected java.lang.String candidateURL

candidateURLLength

protected int candidateURLLength

url

protected java.net.URL url

Method Detail

write2

protected void write2(StyxFileClient client,
                      long offset,
                      int count,
                      org.apache.mina.common.ByteBuffer data,
                      boolean truncate,
                      int tag)
               throws StyxException

This method does the job of checking for URLs being written to the file.

Throws:

StyxException

setURL

public void setURL(java.net.URL url)
            throws StyxException

Throws:

StyxException

writeData

protected abstract void writeData(StyxFileClient client,
                                  long offset,
                                  int count,
                                  org.apache.mina.common.ByteBuffer data,
                                  boolean truncate,
                                  int tag)
                           throws StyxException,
                                  java.io.IOException

Writes data to the underlying file or stream

Throws:

StyxException

java.io.IOException

closeOutput

protected abstract void closeOutput()
                             throws java.io.IOException

Closes the output file or stream. This default implementation does nothing

Throws:

java.io.IOException

getURL

public java.net.URL getURL()

Returns:

the URL from which this file will get its data, or null if the URL has not been set