Class LazyCollection.FilterIterator

java.lang.Object

org.eclipse.m2m.atl.emftvm.util.LazyCollection.ReadOnlyIterator<E>

LazyCollection<E>.org.eclipse.m2m.atl.emftvm.util.LazyCollection.CachingIterator

org.eclipse.m2m.atl.emftvm.util.LazyCollection.FilterIterator

All Implemented Interfaces:

Iterator<E>

Direct Known Subclasses:

LazyCollection.RejectIterator, LazyCollection.SelectIterator

Enclosing class:

LazyCollection<E>

public abstract class LazyCollection.FilterIterator
extends LazyCollection<E>.CachingIterator

LazyCollection.ReadOnlyIterator that filters elements from the underlying collection by evaluating a condition function on them.

Field Summary

Fields

Modifier and Type	Field	Description
protected final CodeBlock	condition
protected E	next
protected boolean	nextIncluded
protected boolean	nextSet
protected final StackFrame	parentFrame

Fields inherited from class LazyCollection.CachingIterator

i, inner

Constructor Summary

Constructors

Constructor	Description
FilterIterator(CodeBlock condition, StackFrame parentFrame)	Creates a LazyCollection<E>.FilterIterator with condition.

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()
protected abstract boolean	include(E element)	Checks whether to include
E	next()

Methods inherited from class LazyCollection.CachingIterator

updateCache

Methods inherited from class LazyCollection.ReadOnlyIterator

remove

Methods inherited from class Object

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

Methods inherited from interface Iterator

forEachRemaining

Field Details

condition

protected final CodeBlock condition

parentFrame

protected final StackFrame parentFrame

next

protected E next

nextSet

protected boolean nextSet

nextIncluded

protected boolean nextIncluded

Constructor Details

FilterIterator

public FilterIterator(CodeBlock condition,
 StackFrame parentFrame)

Creates a LazyCollection<E>.FilterIterator with condition.

Parameters:

condition - the condition function

parentFrame - the parent stack frame context

Method Details

include

protected abstract boolean include(E element)

Checks whether to include

element

.

Parameters:

element - the element to filter

Returns:

true iff element should be included in this collection

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

Overrides:

hasNext in class LazyCollection<E>.CachingIterator

next

public E next()

Specified by:

next in interface Iterator<E>

Overrides:

next in class LazyCollection<E>.CachingIterator