ajanta.pattern
Class ItinEntry

java.lang.Object
  |
  +--ajanta.pattern.Pattern
        |
        +--ajanta.pattern.ItinEntry

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public class ItinEntry

extends Pattern

The basic unit of Migartion is defined in terms of ItinEntry. It is a singleton pattern. It specifies the destination server to migrate to, and the action to be performed at the host.

See Also:

Serialized Form

Field Summary

ajanta.naming.URN

hostURN URN of the destination server

Fields inherited from class ajanta.pattern.Pattern

action, DONE, FAILED, NOTDONE, status

Constructor Summary

ItinEntry()
It initializes hostURN and action to null

ItinEntry(ajanta.naming.URN name, java.lang.String method, java.lang.Class[] formal, java.lang.Object[] actual)

Method Summary

ajanta.pattern.ItinEntry	currentEntry()
protected int	next(ajanta.server.AgentEnv host) If the status of the ItinEntry is not equal to DONE then it migrates the agent to the specified host using AgentEnv go primitive
void	print() Print destination server name and the status of the ItinEntry
protected void	reset() Set the status of the ItinEntry to NOTDONE
protected void	scan() Empty method...to be defined in derived classes
java.lang.String	toString() return name of the destination server

Methods inherited from class ajanta.pattern.Pattern

getName, setName

Methods inherited from class java.lang.Object

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

Field Detail

hostURN

public ajanta.naming.URN hostURN

URN of the destination server

Constructor Detail

ItinEntry

public ItinEntry()

It initializes hostURN and action to null

ItinEntry

public ItinEntry(ajanta.naming.URN name,
                 java.lang.String method,
                 java.lang.Class[] formal,
                 java.lang.Object[] actual)

Parameters:

name - URN of the destination server

method - name of the method to be executed

formal - array of method's parameter classes

actual - array of method's parameter objects

Method Detail

next

protected int next(ajanta.server.AgentEnv host)
            throws java.net.UnknownHostException

If the status of the ItinEntry is not equal to DONE then it migrates the agent to the specified host using AgentEnv go primitive

Specified by:

next in class Pattern

java.net.UnknownHostException

reset

protected void reset()

Set the status of the ItinEntry to NOTDONE

Specified by:

reset in class Pattern

scan

protected void scan()

Empty method...to be defined in derived classes

Specified by:

scan in class Pattern

toString

public java.lang.String toString()

return name of the destination server

Overrides:

toString in class java.lang.Object

currentEntry

public ajanta.pattern.ItinEntry currentEntry()

Returns:

if the status is not equal to DONE then return reference to itself( this ) else return null

print

public void print()

Print destination server name and the status of the ItinEntry

Specified by:

print in class Pattern