org.apache.lens.server.api.query.priority

Class RangeConf<K extends Comparable<K>,V>

java.lang.Object

org.apache.lens.server.api.query.priority.RangeConf<K,V>

Type Parameters:

K - Key type. Integer in the grade range example

V - Value Type. String(or a Grade class) in the grade range example

Direct Known Subclasses:

CostToPriorityRangeConf

public abstract class RangeConf<K extends Comparable<K>,V>
extends Object

Class for storing range configurations. An Example would be grading system. The value F,30,D,40,C,60,B,80,A corresponds to a system where - inf < marks <= 30 : F 30 < marks <= 40 : D 40 < marks <= 60 : C 60 < marks <= 80 : B 80 < marks <= + Inf : A

rangeConfInstance.get(marks) would give you the grade depending on the range.

The utility is for easily storing range configs in config xml files.

Implementation is done by storing the least value(floor) and keeping a treemap on rest of values

Method Summary

Modifier and Type	Method and Description
V	get(K key) Get method.
String	toString() toString representation

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

get

public V get(K key)

Get method.

Parameters:

key -

Returns:

the value depending on which range the key lies in

toString

public String toString()

toString representation

Overrides:

toString in class Object

Returns:

string representation