com.jamonapi.utils

Class NExtremeBufferHolder

java.lang.Object

com.jamonapi.utils.NExtremeBufferHolder

All Implemented Interfaces:

BufferHolder, Serializable, Comparator

Direct Known Subclasses:

NExtremeArrayBufferHolder

public class NExtremeBufferHolder
extends Object
implements BufferHolder, Comparator

Buffer used to keep the last N recent values based on the comparator. Note the Comparator must be thread safe.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NExtremeBufferHolder(boolean naturalOrder)
NExtremeBufferHolder(Comparator comparator)

Method Summary

Modifier and Type	Method and Description
void	add(Object replaceWithObj) Add the passed object to the array if BufferList is not full or shouldReplaceWith returns true
int	compare(Object newObj, Object existingObj) Method used by the comparator interface.
BufferHolder	copy() return a usable copy of the BufferHolder
List	getCollection() Get the underlying collection
Comparator	getComparator()
List	getOrderedCollection() Get the Collection in sorted order
void	remove(Object replaceWithObj) Remove the smallest element from the BufferList if the buffer is full and shouldReplaceWith(...) returns true.
void	setCollection(List list)
void	setComparator(Comparator comparator)
boolean	shouldReplaceWith(Object replaceWithObj) Returns true if this object is greater than the smallest value in the buffer

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

NExtremeBufferHolder

public NExtremeBufferHolder(Comparator comparator)

NExtremeBufferHolder

public NExtremeBufferHolder(boolean naturalOrder)

Method Detail

getCollection

public List getCollection()

Description copied from interface: BufferHolder

Get the underlying collection

Specified by:

getCollection in interface BufferHolder

setComparator

public void setComparator(Comparator comparator)

getComparator

public Comparator getComparator()

compare

public int compare(Object newObj,
                   Object existingObj)

Method used by the comparator interface.

   o1 < o2 - returns a negative integer
   o1 == o2 - returns zero
   o1 > o2 - returns a postitive integer
  

Iterate through all columns that should be compared (in the proper order) and call the Comparator for each of the column elements. Note the column value is always the first argument and the comparison value is always the second Returns

  this object is less than - returns a negative integer,
  this object equal to - retutns zero
  this object greater than - return positive integer
 

Specified by:

compare in interface Comparator

add

public void add(Object replaceWithObj)

Description copied from interface: BufferHolder

Add the passed object to the array if BufferList is not full or shouldReplaceWith returns true

Specified by:

add in interface BufferHolder

remove

public void remove(Object replaceWithObj)

Description copied from interface: BufferHolder

Remove the smallest element from the BufferList if the buffer is full and shouldReplaceWith(...) returns true.

Specified by:

remove in interface BufferHolder

shouldReplaceWith

public boolean shouldReplaceWith(Object replaceWithObj)

Description copied from interface: BufferHolder

Returns true if this object is greater than the smallest value in the buffer

Specified by:

shouldReplaceWith in interface BufferHolder

getOrderedCollection

public List getOrderedCollection()

Description copied from interface: BufferHolder

Get the Collection in sorted order

Specified by:

getOrderedCollection in interface BufferHolder

setCollection

public void setCollection(List list)

Specified by:

setCollection in interface BufferHolder

copy

public BufferHolder copy()

Description copied from interface: BufferHolder

return a usable copy of the BufferHolder

Specified by:

copy in interface BufferHolder