to.etc.webapp.query

Enum QSelectionFunction

java.lang.Object

java.lang.Enum<QSelectionFunction>

to.etc.webapp.query.QSelectionFunction

All Implemented Interfaces:

Serializable, Comparable<QSelectionFunction>

public enum QSelectionFunction
extends Enum<QSelectionFunction>

All default and generic selection functions.

Author:

Frits Jalvingh Created on Jul 14, 2009

Enum Constant Summary

Enum Constants

Enum Constant and Description
AVG agv(x)
COUNT count() the #of rows
COUNT_DISTINCT count a distinct thingerydoo
DISTINCT Make a distinct selection
ID A selector for the primary key
MAX max(x)
MIN min(x)
PROPERTY A selector which represents a property of the object
ROWCOUNT Hibernate has this, but probably has no idea where to get this from
SUM sum(x)
USER An user-defined (database specific) function.

Method Summary

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

min(x)

MAX

public static final QSelectionFunction MAX

max(x)

AVG

public static final QSelectionFunction AVG

agv(x)

SUM

public static final QSelectionFunction SUM

sum(x)

COUNT

public static final QSelectionFunction COUNT

count() the #of rows

COUNT_DISTINCT

public static final QSelectionFunction COUNT_DISTINCT

count a distinct thingerydoo

ROWCOUNT

public static final QSelectionFunction ROWCOUNT

Hibernate has this, but probably has no idea where to get this from

ID

public static final QSelectionFunction ID

A selector for the primary key

PROPERTY

public static final QSelectionFunction PROPERTY

A selector which represents a property of the object

USER

public static final QSelectionFunction USER

An user-defined (database specific) function.

DISTINCT

public static final QSelectionFunction DISTINCT

Make a distinct selection

Method Detail

values

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

Returns:

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

valueOf

public static QSelectionFunction 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