org.apache.nutch.ndfs
Class FSResults

java.lang.Object
  org.apache.nutch.ndfs.FSResults

All Implemented Interfaces:

FSConstants, Writable

public class FSResults

extends Object

implements Writable, FSConstants

The result of an NFS IPC call.

Author:

Mike Cafarella

Field Summary

Writable	first
byte	op
Writable	second

Fields inherited from interface org.apache.nutch.ndfs.FSConstants

BLOCK_SIZE, BLOCKREPORT_INTERVAL, CHUNKED_ENCODING, COMPLETE_SUCCESS, DATANODE_STARTUP_PERIOD, EXPIRE_INTERVAL, HEARTBEAT_INTERVAL, LEASE_PERIOD, OBSOLETE_INTERVAL, OP_ACK, OP_BLOCKRECEIVED, OP_BLOCKREPORT, OP_CLIENT_ABANDONBLOCK, OP_CLIENT_ABANDONBLOCK_ACK, OP_CLIENT_ADDBLOCK, OP_CLIENT_ADDBLOCK_ACK, OP_CLIENT_COMPLETEFILE, OP_CLIENT_COMPLETEFILE_ACK, OP_CLIENT_DATANODE_HINTS, OP_CLIENT_DATANODE_HINTS_ACK, OP_CLIENT_DATANODEREPORT, OP_CLIENT_DATANODEREPORT_ACK, OP_CLIENT_DELETE, OP_CLIENT_DELETE_ACK, OP_CLIENT_EXISTS, OP_CLIENT_EXISTS_ACK, OP_CLIENT_ISDIR, OP_CLIENT_ISDIR_ACK, OP_CLIENT_LISTING, OP_CLIENT_LISTING_ACK, OP_CLIENT_MKDIRS, OP_CLIENT_MKDIRS_ACK, OP_CLIENT_OBTAINLOCK, OP_CLIENT_OBTAINLOCK_ACK, OP_CLIENT_OPEN, OP_CLIENT_OPEN_ACK, OP_CLIENT_RAWSTATS, OP_CLIENT_RAWSTATS_ACK, OP_CLIENT_RELEASELOCK, OP_CLIENT_RELEASELOCK_ACK, OP_CLIENT_RENAMETO, OP_CLIENT_RENAMETO_ACK, OP_CLIENT_RENEW_LEASE, OP_CLIENT_RENEW_LEASE_ACK, OP_CLIENT_STARTFILE, OP_CLIENT_STARTFILE_ACK, OP_CLIENT_TRYAGAIN, OP_ERROR, OP_FAILURE, OP_HEARTBEAT, OP_INVALIDATE_BLOCKS, OP_READ_BLOCK, OP_READSKIP_BLOCK, OP_TRANSFERBLOCKS, OP_TRANSFERDATA, OP_WRITE_BLOCK, OPERATION_FAILED, RUNLENGTH_ENCODING, STILL_WAITING, SYSTEM_STARTUP_PERIOD, WRITE_COMPLETE

Constructor Summary

FSResults()

FSResults(byte op)

FSResults(byte op, Writable first)

FSResults(byte op, Writable first, Writable second)

Method Summary

void	readFields(DataInput in) Reads the fields of this object from in.
boolean	success() Whether the call worked.
boolean	tryagain() Whether the client should give it another shot
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Field Detail

op

public byte op

first

public Writable first

second

public Writable second

Constructor Detail

FSResults

public FSResults()

FSResults

public FSResults(byte op)

FSResults

public FSResults(byte op,
                 Writable first)

FSResults

public FSResults(byte op,
                 Writable first,
                 Writable second)

Method Detail

success

public boolean success()

Whether the call worked.

tryagain

public boolean tryagain()

Whether the client should give it another shot

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException