org.globus.cog.gridface.impl.commands
Class GridCommandImpl

java.lang.Object
  org.globus.cog.gridface.impl.commands.GridCommandImpl

All Implemented Interfaces:

ExecutableObject, GridCommand, StatusListener

Direct Known Subclasses:

CHDIRCommandImpl, CHMODCommandImpl, CLOSECommandImpl, COPYCommandImpl, COPYDirCommandImpl, COPYFileCommandImpl, EXECCommandImpl, EXISTSCommandImpl, GETDIRCommandImpl, GETFILECommandImpl, ISDIRCommandImpl, LSCommandImpl, MKDIRCommandImpl, OPENCommandImpl, PUTDIRCommandImpl, PUTFILECommandImpl, PWDCommandImpl, RENAMECommandImpl, RMDIRCommandImpl, RMFILECommandImpl, URLCOPYCommandImpl

public abstract class GridCommandImpl

extends Object

implements GridCommand

Base class for all Grid Commands. Follows adapter pattern. Specific commands extend this class to override a few methods

Field Summary

protected Task

task

Fields inherited from interface org.globus.cog.abstraction.interfaces.ExecutableObject

TASK, TASKGRAPH

Constructor Summary

GridCommandImpl()

Method Summary

void	addArgument(String arg) Add one argument at a time
void	addStatusListener(StatusListener listener) Add status listener
String	getArgument(int n) Return the nth argument
Vector	getArguments() Returns all arguments in a vector.
int	getArgumentsSize() Return the total number of arguments
Object	getAttribute(String name) Get the attribute with given name
Hashtable	getAttributes() Get all attributes in the form of a hash table
String	getCommand() Return command name
Calendar	getCompletedTime()
String	getError() Get error message of the task belonging to this command
Exception	getException() Returns the exception for the current status object this is here so it can be overridden by the exec object to make sence of the error codes of jglobus
String	getExceptionString() returns an excpetion and its stack to a string using the static method in gridfaces.impl.util.LoggerImpl
Integer	getId()
Identity	getIdentity() Return id for this command
String	getName() Return name of this command
int	getObjectType()
Status	getStatus() Return status of the command
Enumeration	getStatusListeners() Get a list of status listeners
Calendar	getSubmittedTime()
Task	getTask()
Object	getTaskAttribute(String key) Return task attributes
Task	prepareFileOperationTask() prepare a file operation task
Task	prepareFileTransferTask() Prepares a file transfer task with File transfer specification
Task	prepareJobSubmissionTask() Prepares job submission task with JobSpecification
void	removeStatusListener(StatusListener listener) Remove status listener
void	setArguments(String[] args) Set many arguments at a time
void	setAttribute(String name, Object value) set attributes for the given command
void	setAttributes(Hashtable attribs)
void	setCommand(String command) set command name
void	setIdentity(Identity id) Set id for this command
void	setName(String name) Set name for this command
void	setStatus(int status) Set status of the command
void	setStatus(Status status) Set status of the command
void	setTask(Task newTask)
void	setTaskAttribute(String key, Object value) set attributes for the task
void	statusChanged(StatusEvent event) Listen to status of the tasks prepared by this command
boolean	validate() Validate the inputs for this command

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.globus.cog.gridface.interfaces.GridCommand

getOutput, prepareTask

Field Detail

task

protected Task task

Constructor Detail

GridCommandImpl

public GridCommandImpl()

Method Detail

setArguments

public void setArguments(String[] args)

Set many arguments at a time

Specified by:

setArguments in interface GridCommand

addArgument

public void addArgument(String arg)

Add one argument at a time

Specified by:

addArgument in interface GridCommand

setCommand

public void setCommand(String command)

set command name

Specified by:

setCommand in interface GridCommand

getCommand

public String getCommand()

Return command name

Specified by:

getCommand in interface GridCommand

getArgument

public String getArgument(int n)

Return the nth argument

Specified by:

getArgument in interface GridCommand

getArgumentsSize

public int getArgumentsSize()

Return the total number of arguments

Specified by:

getArgumentsSize in interface GridCommand

getArguments

public Vector getArguments()

Returns all arguments in a vector. This method enables easy copy of arguments into the specification

Specified by:

getArguments in interface GridCommand

prepareFileOperationTask

public Task prepareFileOperationTask()
                              throws Exception

prepare a file operation task

Throws:

Exception

prepareFileTransferTask

public Task prepareFileTransferTask()
                             throws Exception

Prepares a file transfer task with File transfer specification

Throws:

Exception

prepareJobSubmissionTask

public Task prepareJobSubmissionTask()
                              throws Exception

Prepares job submission task with JobSpecification

Throws:

Exception

setAttribute

public void setAttribute(String name,
                         Object value)

set attributes for the given command

Specified by:

setAttribute in interface GridCommand

setAttributes

public void setAttributes(Hashtable attribs)

Specified by:

setAttributes in interface GridCommand

getAttribute

public Object getAttribute(String name)

Get the attribute with given name

Specified by:

getAttribute in interface GridCommand

getAttributes

public Hashtable getAttributes()

Get all attributes in the form of a hash table

Specified by:

getAttributes in interface GridCommand

getCompletedTime

public Calendar getCompletedTime()

Specified by:

getCompletedTime in interface GridCommand

getId

public Integer getId()

Specified by:

getId in interface GridCommand

getSubmittedTime

public Calendar getSubmittedTime()

Specified by:

getSubmittedTime in interface GridCommand

getTask

public Task getTask()

Specified by:

getTask in interface GridCommand

setTask

public void setTask(Task newTask)

Specified by:

setTask in interface GridCommand

addStatusListener

public void addStatusListener(StatusListener listener)

Add status listener

Specified by:

addStatusListener in interface GridCommand

removeStatusListener

public void removeStatusListener(StatusListener listener)

Remove status listener

Specified by:

removeStatusListener in interface GridCommand

getStatusListeners

public Enumeration getStatusListeners()

Get a list of status listeners

Specified by:

getStatusListeners in interface GridCommand

validate

public boolean validate()

Validate the inputs for this command

Specified by:

validate in interface GridCommand

setStatus

public void setStatus(int status)

Set status of the command

Specified by:

setStatus in interface ExecutableObject

setStatus

public void setStatus(Status status)

Set status of the command

Specified by:

setStatus in interface ExecutableObject

getStatus

public Status getStatus()

Return status of the command

Specified by:

getStatus in interface ExecutableObject

statusChanged

public void statusChanged(StatusEvent event)

Listen to status of the tasks prepared by this command

Specified by:

statusChanged in interface StatusListener

setIdentity

public void setIdentity(Identity id)

Set id for this command

Specified by:

setIdentity in interface ExecutableObject

getIdentity

public Identity getIdentity()

Return id for this command

Specified by:

getIdentity in interface ExecutableObject

setName

public void setName(String name)

Set name for this command

Specified by:

setName in interface ExecutableObject

getName

public String getName()

Return name of this command

Specified by:

getName in interface ExecutableObject

getError

public String getError()

Get error message of the task belonging to this command

Specified by:

getError in interface GridCommand

setTaskAttribute

public void setTaskAttribute(String key,
                             Object value)

set attributes for the task

Specified by:

setTaskAttribute in interface GridCommand

getTaskAttribute

public Object getTaskAttribute(String key)

Return task attributes

Specified by:

getTaskAttribute in interface GridCommand

getObjectType

public int getObjectType()

Specified by:

getObjectType in interface ExecutableObject

getException

public Exception getException()

Description copied from interface: GridCommand

Returns the exception for the current status object this is here so it can be overridden by the exec object to make sence of the error codes of jglobus

Specified by:

getException in interface GridCommand

getExceptionString

public String getExceptionString()

Description copied from interface: GridCommand

returns an excpetion and its stack to a string using the static method in gridfaces.impl.util.LoggerImpl

Specified by:

getExceptionString in interface GridCommand

Returns: