org.obe.spi.model
Class JoinInstance

java.lang.Object
  org.obe.spi.model.JoinInstance

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

AndJoinInstance, OrJoinInstance

public abstract class JoinInstance

extends java.lang.Object

implements java.io.Serializable

Stores the persistent state of an activity instance's join.

Author:

Adrian Price

See Also:

Serialized Form

Field Summary

protected boolean[]	_states
protected java.lang.String[]	_transitions

Constructor Summary

protected

JoinInstance(java.lang.String[] transitions)

Method Summary

protected boolean	didFire(int index) Sets the fired state for the specified transition.
boolean	equals(java.lang.Object obj)
protected void	fire() Informs the join that it has fired.
int	getFiredCount() Returns the number of times the join has fired since the workflow started.
boolean	hasFired() Returns whether the join has fired.
protected boolean	hasFired(int index)
int	hashCode()
boolean	isModified() Returns whether the join has been modified since it was last persisted.
void	reset() Resets the join to its initial state.
abstract boolean	shouldFire(java.lang.String transitionId) Handles the activation of an afferent transition.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_transitions

protected final java.lang.String[] _transitions

_states

protected final boolean[] _states

Constructor Detail

JoinInstance

protected JoinInstance(java.lang.String[] transitions)

Method Detail

shouldFire

public abstract boolean shouldFire(java.lang.String transitionId)

Handles the activation of an afferent transition.

Parameters:

transitionId - The ID of the transition that fired.

Returns:

true if the join fired.

fire

protected final void fire()

Informs the join that it has fired. If it has not already fired it is marked as both fired and modified, which states persist until it is reset and persisted respectively. Firing a join also increments its fired count.

hasFired

public final boolean hasFired()

Returns whether the join has fired.

Returns:

true if the join has fired.

hasFired

protected final boolean hasFired(int index)

didFire

protected final boolean didFire(int index)

Sets the fired state for the specified transition. A change of state marks the join as modified.

Parameters:

index - Index to set.

Returns:

Whether the transition fired.

getFiredCount

public final int getFiredCount()

Returns the number of times the join has fired since the workflow started.

Returns:

Fire count;

isModified

public final boolean isModified()

Returns whether the join has been modified since it was last persisted.

Returns:

true if the join has been modified.

reset

public final void reset()

Resets the join to its initial state. The 'fired count' is unaffected by the reset operation.

equals

public final boolean equals(java.lang.Object obj)

hashCode

public final int hashCode()

toString

public final java.lang.String toString()