alice.tuplemedium
Interface TRSet

All Known Implementing Classes:

TRSetImpl

public interface TRSet

Specifies the services which must be provided by the component inside the tuple centre virtual machine collecting and managing triggered reactions as a multiset An important aspect of the component implementing this interface is the ability to execute transactions, that is execute sequence of operations that could be commited or asked to be undone.

See Also:

TriggeredReaction, Reaction, Reactor, TupleCentreVM

Method Summary

void	add(TriggeredReaction t) Adds a triggered reaction to the multiset
void	beginTransaction() Begins a transaction section Every operation on multiset can be undone
void	empty() Empties the multiset
void	endTransaction(boolean commit) Ends a transaction section specifying if operations must be committed or undone
TriggeredReaction	get() Gets not-deterministically (with removal) a triggered reaction from the multiset
java.util.Iterator	getIterator() Gets an iterator to navigate through triggered reactions
boolean	isEmpty() Tests if the multiset is empty
void	sub(TriggeredReaction t) Removes a triggered reaction from the multiset

Method Detail

add

public void add(TriggeredReaction t)

Adds a triggered reaction to the multiset

Parameters:

t - the triggered reaction to be added

sub

public void sub(TriggeredReaction t)

Removes a triggered reaction from the multiset

Parameters:

t - the triggered reaction to be removed

isEmpty

public boolean isEmpty()

Tests if the multiset is empty

empty

public void empty()

Empties the multiset

beginTransaction

public void beginTransaction()

Begins a transaction section Every operation on multiset can be undone

endTransaction

public void endTransaction(boolean commit)

Ends a transaction section specifying if operations must be committed or undone

Parameters:

commit - if true the operations are committed, else they are undone and the multiset is rolled back to the state before the beginTransaction invocation

get

public TriggeredReaction get()

Gets not-deterministically (with removal) a triggered reaction from the multiset

Returns:

the triggered reaction removed

getIterator

public java.util.Iterator getIterator()

Gets an iterator to navigate through triggered reactions

Returns:

the iterator