org.apache.ignite.internal.util.lang.gridfunc

Class TransformFilteringIterator<T2,T1>

java.lang.Object

org.apache.ignite.internal.util.lang.GridIteratorAdapter<T2>

org.apache.ignite.internal.util.lang.gridfunc.TransformFilteringIterator<T2,T1>

All Implemented Interfaces:

Serializable, Iterable<T2>, Iterator<T2>, GridSerializableIterator<T2>, GridIterator<T2>

public class TransformFilteringIterator<T2,T1>
extends GridIteratorAdapter<T2>

Iterator from given iter and optional filtering predicate.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TransformFilteringIterator(Iterator<? extends T1> iter, IgniteClosure<? super T1,T2> clos, boolean readOnly, IgnitePredicate<? super T1>... preds)

Method Summary

Modifier and Type	Method and Description
boolean	hasNextX() This method is the same as Iterator.hasNext(), but allows for failure with exception.
T2	nextX() This method is the same as Iterator.next(), but allows for failure with exception.
void	removeX() This method is the same as Iterator.remove(), but allows for failure with exception.
String	toString()

Methods inherited from class org.apache.ignite.internal.util.lang.GridIteratorAdapter

hasNext, iterator, next, remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

TransformFilteringIterator

public TransformFilteringIterator(Iterator<? extends T1> iter,
                                  IgniteClosure<? super T1,T2> clos,
                                  boolean readOnly,
                                  IgnitePredicate<? super T1>... preds)

Parameters:

iter - Input iter.

clos - Transforming closure to convert from T1 to T2.

readOnly - If true, then resulting iter will not allow modifications to the underlying collection.

preds - Optional filtering predicates.

Method Detail

hasNextX

public boolean hasNextX()

This method is the same as Iterator.hasNext(), but allows for failure with exception. Often iterators are used to iterate through values that have not or have partially been received from remote nodes, and need to account for possible network failures, rather than just returning false out of Iterator.hasNext() method.

Returns:

True if iterator contains more elements.

See Also:

Iterator.hasNext()

nextX

@Nullable
public T2 nextX()

This method is the same as Iterator.next(), but allows for failure with exception. Often iterators are used to iterate through values that have not or have partially been received from remote nodes, and need to account for possible network failures, rather than throwing NoSuchElementException runtime exception.s

Returns:

True if iterator contains more elements.

See Also:

Iterator.next()

removeX

public void removeX()

This method is the same as Iterator.remove(), but allows for failure with exception.

toString

public String toString()

Overrides:

toString in class Object