uk.ac.ed.epcc.webapp.jdbc.expr

Enum ArrayFunc

java.lang.Object

java.lang.Enum<ArrayFunc>

uk.ac.ed.epcc.webapp.jdbc.expr.ArrayFunc

All Implemented Interfaces:

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

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

functions that can be applied to arrays of SQLExpressions.

Enum Constant Summary

Enum Constants

Enum Constant and Description
GREATEST select the greatest value from the array
LEAST select the least value from the array.

Method Summary

Modifier and Type	Method and Description
abstract java.lang.Object	combine(java.lang.Comparable a, java.lang.Comparable b)
static ArrayFunc	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static ArrayFunc[]	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

GREATEST

public static final ArrayFunc GREATEST

select the greatest value from the array

LEAST

public static final ArrayFunc LEAST

select the least value from the array.

Method Detail

values

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

Returns:

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

valueOf

public static ArrayFunc 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.)

Parameters:

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

Returns:

the enum constant with the specified name

Throws:

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

java.lang.NullPointerException - if the argument is null

combine

public abstract java.lang.Object combine(java.lang.Comparable a,
                                         java.lang.Comparable b)