uk.ac.ed.epcc.safe.accounting

Enum Reduction

java.lang.Object

java.lang.Enum<Reduction>

uk.ac.ed.epcc.safe.accounting.Reduction

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Reduction>

public enum Reduction
extends java.lang.Enum<Reduction>

Reduction operators.

The INDEX reduction is equivalent to the SQL GROUP BY CLAUSE, when combined with other Reductions it requests that multiple results should be returned, with reductions only happending across sets of records where the INDEX property is the same.

AVG is a mean value except when doing overlap mapping when it becomes a time average

Author:

spb

Enum Constant Summary

Enum Constants

Enum Constant and Description
AVG
INDEX
MAX
MIN
SUM

Method Summary

Methods

Modifier and Type	Method and Description
uk.ac.ed.epcc.webapp.content.Operator	operator() get a Operator suitable for combing partial results.
static Reduction	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static Reduction[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SUM

public static final Reduction SUM

AVG

public static final Reduction AVG

MIN

public static final Reduction MIN

MAX

public static final Reduction MAX

INDEX

public static final Reduction INDEX

Method Detail

values

public static Reduction[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Reduction c : Reduction.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Reduction valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

operator

public uk.ac.ed.epcc.webapp.content.Operator operator()

get a Operator suitable for combing partial results.

Returns:

Operator