com.mysema.query.collections
Class AbstractIterable<I,T>

java.lang.Object
  com.mysema.query.collections.AbstractIterable<I,T>

Type Parameters:

T -

All Implemented Interfaces:

Iterable<T>

Direct Known Subclasses:

MultiSourceIterable, SingleSourceIterable

public abstract class AbstractIterable<I,T>
extends Object
implements Iterable<T>

Author:

tiwe

Field Summary

protected ExprEvaluatorFactory	evaluatorFactory
protected IteratorFactory	iteratorFactory
protected QueryMetadata	metadata

Constructor Summary

AbstractIterable(QueryMetadata metadata, ExprEvaluatorFactory evaluatorFactory, IteratorFactory iteratorFactory, boolean forCount)

Method Summary

protected abstract Iterator<I>	initialIterator() creates the initial Iterator providing the filtered source content
Iterator<T>	iterator()
protected abstract Iterator<I>	orderedIterator(Iterator<I> it) reorders the filtered source Iterator based on the ordering criteria of the QueryMetadata
protected abstract Iterator<T>	projectedIterator(Iterator<I> it) creates the projection based on the given Iterator and the projection definition of the QueryMetadata

Methods inherited from class java.lang.Object

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

Field Detail

evaluatorFactory

protected final ExprEvaluatorFactory evaluatorFactory

iteratorFactory

protected final IteratorFactory iteratorFactory

metadata

protected final QueryMetadata metadata

Constructor Detail

AbstractIterable

public AbstractIterable(QueryMetadata metadata,
                        ExprEvaluatorFactory evaluatorFactory,
                        IteratorFactory iteratorFactory,
                        boolean forCount)

Method Detail

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

initialIterator

protected abstract Iterator<I> initialIterator()

creates the initial Iterator providing the filtered source content

Returns:

orderedIterator

protected abstract Iterator<I> orderedIterator(Iterator<I> it)

reorders the filtered source Iterator based on the ordering criteria of the QueryMetadata

Parameters:

it -

Returns:

projectedIterator

protected abstract Iterator<T> projectedIterator(Iterator<I> it)

creates the projection based on the given Iterator and the projection definition of the QueryMetadata

Parameters:

it -

Returns: