de.up.ling.irtg.util

Class TupleIterator<T>

java.lang.Object

de.up.ling.irtg.util.TupleIterator<T>

Type Parameters:

T -

All Implemented Interfaces:

Iterator<T[]>

public class TupleIterator<T>
extends Object
implements Iterator<T[]>

Iterates over all combinations of items from the given Iterables. Re-uses the same array as a return value.

Author:

jonas

Constructor Summary

Constructors

Constructor and Description
TupleIterator(Iterable[] tuple, T... possibleContainer) Construct a new instance, will use the possible container to hold return values, if it has the correct size.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
T[]	next() Returns the next tuple in the iterator.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

TupleIterator

public TupleIterator(Iterable[] tuple,
                     T... possibleContainer)

Construct a new instance, will use the possible container to hold return values, if it has the correct size.

Parameters:

tuple - tuple of collections for which we will iterate over the Cartesian product.

possibleContainer - Array to indicate type of return value and possibly store returns.

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T[]>

next

public T[] next()

Returns the next tuple in the iterator. Be careful, since this always returns the same backing array, calling it again will modify that array.

Specified by:

next in interface Iterator<T[]>

Returns: