TupleSet

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alice.tuplemedium
Interface TupleSet

All Superinterfaces:: java.io.Serializable

public interface TupleSet
extends java.io.Serializable

Specifies the services which must be provided by the component inside the tuple centre virtual machine collecting and managing tuples 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.

Version:: 1.0

Method Summary

void add(Tuple t)
          Adds a tuple 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

java.util.Iterator getIterator()
          Gets an iterator to navigate through tuples of the multiset

Tuple getMatchingTuple(TupleTemplate t)
          Gets (and removes) non-deterministically a tuple of the multiset matching the template specified

boolean hasMatchingTuple(TupleTemplate t)
          Checks if exists a tuple inside the tuple set matching the template

boolean isEmpty()
          Tests if the multiset is empty

Tuple readMatchingTuple(TupleTemplate t)
          Gets (wtihout removal) non-deterministically a tuple of the multiset matching the template specified

int size()
          Gets the number of tuples inside the multiset

void sub(Tuple t)
          Removes a tuple to the multiset

Method Detail

add

public void add(Tuple t)

Adds a tuple to the multiset

sub

public void sub(Tuple t)

Removes a tuple to the multiset

size

public int size()

Gets the number of tuples inside the multiset

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

getMatchingTuple

public Tuple getMatchingTuple(TupleTemplate t)

Gets (and removes) non-deterministically a tuple of the multiset matching the template specified

readMatchingTuple

public Tuple readMatchingTuple(TupleTemplate t)

Gets (wtihout removal) non-deterministically a tuple of the multiset matching the template specified

hasMatchingTuple

public boolean hasMatchingTuple(TupleTemplate t)

Checks if exists a tuple inside the tuple set matching the template

getIterator

public java.util.Iterator getIterator()

Gets an iterator to navigate through tuples of the multiset