org.shapelogic.mathematics
Class NaturalNumberStream

java.lang.Object
  org.shapelogic.streams.BaseCommonStream<E>
      org.shapelogic.streams.BaseCommonNumberedStream<java.lang.Integer>
          org.shapelogic.mathematics.NaturalNumberStream

All Implemented Interfaces:

java.util.Iterator<java.lang.Integer>, CalcValue<java.lang.Integer>, ContextGettable, LazyCalc<java.lang.Integer>, RecursiveContext, NumberedStream<java.lang.Integer>, Stream<java.lang.Integer>, StreamProperties

public class NaturalNumberStream
extends BaseCommonNumberedStream<java.lang.Integer>

Generated Natural Number. There can be both a start and stop value:
start index default 0

max last / last number default not set

Author:

Sami Badawi

Field Summary

Fields inherited from class org.shapelogic.streams.BaseCommonStream

_context, _current, _dirty, _last, _maxLast, _name, _nullLegalValue, _parentContext, _query, _value

Constructor Summary

NaturalNumberStream()

NaturalNumberStream(int maxLast)

NaturalNumberStream(int startIndex, java.lang.Integer maxLast)

Method Summary

int	getStartIndex()
java.lang.Integer	invokeIndex(int index) Calculate the value at an index.

Methods inherited from class org.shapelogic.streams.BaseCommonNumberedStream

calcAddNext, get, hasNext, hasNextBase, isCached, isRandomAccess, next, setLast

Methods inherited from class org.shapelogic.streams.BaseCommonStream

getContext, getInContext, getIndex, getLast, getMaxLast, getName, getParentContext, getValue, isDeterministic, isDirty, isNullLegalValue, remove, setLastFromInput, setMaxLast, setNullLegalValue, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

NaturalNumberStream

public NaturalNumberStream()

NaturalNumberStream

public NaturalNumberStream(int maxLast)

NaturalNumberStream

public NaturalNumberStream(int startIndex,
                           java.lang.Integer maxLast)

Method Detail

getStartIndex

public int getStartIndex()

invokeIndex

public java.lang.Integer invokeIndex(int index)

Description copied from class: BaseCommonNumberedStream

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 BaseCommonNumberedStream<java.lang.Integer>