org.shapelogic.streams
Class SingleListStream<T>

java.lang.Object
  org.shapelogic.streams.BaseListCommonStream<T>
      org.shapelogic.streams.SingleListStream<T>

Type Parameters:

T -

All Implemented Interfaces:

java.lang.Iterable<T>, java.util.Iterator<T>, Calc0<T>, CalcInvoke<T>, CalcValue<T>, ContextGettable, InContexts, LazyCalc<T>, ListStream<T>, NumberedStream<T>, Stream<T>, StreamProperties

Direct Known Subclasses:

SVGReader

public abstract class SingleListStream<T>
extends BaseListCommonStream<T>
implements CalcInvoke<T>, ListStream<T>

Use this to treat a calculation as a stream.

Author:

Sami Badawi

Field Summary

Fields inherited from class org.shapelogic.streams.BaseListCommonStream

_contexts, _current, _dirty, _last, _list, _maxLast, _name, _query, _value

Constructor Summary

SingleListStream()

Method Summary

T	getValue() Starts a lazy calculation.
T	invokeIndex(int index) Calculate the value at an index.

Methods inherited from class org.shapelogic.streams.BaseListCommonStream

calcAddNext, get, getContext, getContexts, getCurrentSize, getInContext, getIndex, getLast, getList, getMaxLast, getName, hasNext, hasNextBase, isCached, isContextBased, isDeterministic, isDirty, isRandomAccess, iterator, next, remove, setList, setMaxLast, setup

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.shapelogic.calculation.Calc0

invoke

Methods inherited from interface org.shapelogic.streams.ListStream

getList, setList

Methods inherited from interface org.shapelogic.streams.NumberedStream

get, getIndex, getLast, getMaxLast, setMaxLast

Methods inherited from interface org.shapelogic.calculation.LazyCalc

isDirty, setup

Methods inherited from interface java.util.Iterator

hasNext, next, remove

Methods inherited from interface java.lang.Iterable

iterator

Constructor Detail

SingleListStream

public SingleListStream()

Method Detail

invokeIndex

public T invokeIndex(int index)

Description copied from class: BaseListCommonStream

Calculate the value at an index.
So it gets the needed input value and call the appropriate invoke function.
Can this be used for a filter call?
The index does not make sense for a filter since you do not know where the input is coming from. So maybe just ignore it.
This is a little messy but less messy that what is there now.

Specified by:

invokeIndex in class BaseListCommonStream<T>

getValue

public T getValue()

Description copied from interface: CalcValue

Starts a lazy calculation. If dirty do calc() else return cached value. This should maybe be moved up in the hierarchy

Specified by:

getValue in interface CalcValue<T>

Overrides:

getValue in class BaseListCommonStream<T>