info.michaelwittig.javaq.query.column

Enum Aggregation

java.lang.Object

java.lang.Enum<Aggregation>

info.michaelwittig.javaq.query.column.Aggregation

All Implemented Interfaces:

Q, Serializable, Comparable<Aggregation>

public enum Aggregation
extends Enum<Aggregation>
implements Q

Aggregations.

Author:

mwittig

Enum Constant Summary

Enum Constants

Enum Constant and Description
avg Avg.
count Count.
first First element.
last Last element.
max maximum.
min Minimum.
sum Sum.

Method Summary

Methods

Modifier and Type	Method and Description
String	toQ()
static Aggregation	valueOf(String name) Returns the enum constant of this type with the specified name.
static Aggregation[]	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

min

public static final Aggregation min

Minimum.

max

public static final Aggregation max

maximum.

first

public static final Aggregation first

First element.

last

public static final Aggregation last

Last element.

avg

public static final Aggregation avg

Avg.

sum

public static final Aggregation sum

Sum.

count

public static final Aggregation count

Count.

Method Detail

values

public static Aggregation[] 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 (Aggregation c : Aggregation.values())
    System.out.println(c);

Returns:

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

valueOf

public static Aggregation valueOf(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.)

Parameters:

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

Returns:

the enum constant with the specified name

Throws:

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

NullPointerException - if the argument is null

toQ

public String toQ()

Specified by:

toQ in interface Q

Returns:

Q