org.apache.royale.compiler.problems.collections

Class FilteredIterator

java.lang.Object

org.apache.royale.compiler.problems.collections.FilteredIterator

All Implemented Interfaces:

Iterator<ICompilerProblem>

public class FilteredIterator
extends Object
implements Iterator<ICompilerProblem>

A FilteredIterator applies a IProblemFilter to an Iterator>ICompilerProblem< and generates a subsequence of the orginal Iterator's results, namely those elements that satisfy the filter.

Constructor Summary

Constructors

Constructor and Description
FilteredIterator(Iterator<ICompilerProblem> problems, IProblemFilter filter) Construct a FilteredIterator.

Method Summary

Modifier and Type	Method and Description
static Iterable<ICompilerProblem>	getFilteredIterable(Collection<ICompilerProblem> problems, IProblemFilter filter) Convenience method extends the FilteredIterator concept to an Iterable.
boolean	hasNext() Find the next element of the underlying sequence that the filter accepts.
ICompilerProblem	next() Find and fetch the next element of the underlying sequence that the filter accepts.
void	remove() This iterator cannot remove elements.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

FilteredIterator

public FilteredIterator(Iterator<ICompilerProblem> problems,
                        IProblemFilter filter)

Construct a FilteredIterator.

Parameters:

problems - - the underlying problem sequence.

filter - - the filter to apply to the problems.

Method Detail

hasNext

public boolean hasNext()

Find the next element of the underlying sequence that the filter accepts.

Specified by:

hasNext in interface Iterator<ICompilerProblem>

Returns:

true if a matching element was found.

next

public ICompilerProblem next()

Find and fetch the next element of the underlying sequence that the filter accepts.

Specified by:

next in interface Iterator<ICompilerProblem>

Returns:

the next filtered element.

Throws:

NoSuchElementException - if no more elements found.

remove

public void remove()

This iterator cannot remove elements.

Specified by:

remove in interface Iterator<ICompilerProblem>

Throws:

UnsupportedOperationException - in all cases.

getFilteredIterable

public static Iterable<ICompilerProblem> getFilteredIterable(Collection<ICompilerProblem> problems,
                                                             IProblemFilter filter)

Convenience method extends the FilteredIterator concept to an Iterable.

Parameters:

problems - - an Iterable (collection) of problems.

filter - - the filter to apply to the problems.

Returns:

an Iterable wrapper around a FilteredIterator.