org.jpos.transaction.participant
Class HasEntry

java.lang.Object
  org.jpos.transaction.participant.HasEntry

All Implemented Interfaces:

Configurable, GroupSelector, TransactionConstants, TransactionParticipant

public class HasEntry
extends Object
implements GroupSelector, Configurable

HasEntry is a general purpose GroupSelector that can be used to verify that a given object is available in the context. It checks the Context for the given entry ('name' property) and returns the content of the 'yes' or 'no' properties as the group list. If "yes" or "no" is not specified, it returns the constant UNKNOWN

Field Summary

static String	NO
static String	UNKNOWN
static String	YES

Fields inherited from interface org.jpos.transaction.TransactionConstants

ABORTED, NO_JOIN, PAUSE, PREPARED, READONLY, RETRY

Constructor Summary

HasEntry()

Method Summary

void	abort(long id, Serializable o) Called by TransactionManager upon transaction commit.
void	commit(long id, Serializable o) Called by TransactionManager upon transaction commit.
int	prepare(long id, Serializable o) Called by TransactionManager in preparation for a transaction
String	select(long id, Serializable ser)
void	setConfiguration(Configuration cfg)

Methods inherited from class java.lang.Object

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

Field Detail

YES

public static final String YES

See Also:

Constant Field Values

NO

public static final String NO

See Also:

Constant Field Values

UNKNOWN

public static final String UNKNOWN

See Also:

Constant Field Values

Constructor Detail

HasEntry

public HasEntry()

Method Detail

prepare

public int prepare(long id,
                   Serializable o)

Description copied from interface: TransactionParticipant

Called by TransactionManager in preparation for a transaction

Specified by:

prepare in interface TransactionParticipant

Parameters:

id - the Transaction identifier

o - transaction context

Returns:

PREPARED or ABORTED (| NO_JOIN | READONLY)

select

public String select(long id,
                     Serializable ser)

Specified by:

select in interface GroupSelector

Parameters:

id - transaction id

ser - transaction context

Returns:

group name or null for no-action

commit

public void commit(long id,
                   Serializable o)

Description copied from interface: TransactionParticipant

Called by TransactionManager upon transaction commit. Warning: implementation should be able to handle multiple calls with the same transaction id (rare crash recovery)

Specified by:

commit in interface TransactionParticipant

Parameters:

id - the Transaction identifier

o - transaction context

abort

public void abort(long id,
                  Serializable o)

Description copied from interface: TransactionParticipant

Called by TransactionManager upon transaction commit. Warning: implementation should be able to handle multiple calls with the same transaction id (rare crash recovery)

Specified by:

abort in interface TransactionParticipant

Parameters:

id - the Transaction identifier

o - transaction context

setConfiguration

public void setConfiguration(Configuration cfg)

Specified by:

setConfiguration in interface Configurable

Parameters:

cfg - Configuration object