org.basex.query.expr

Enum Calc

java.lang.Object

java.lang.Enum<Calc>

org.basex.query.expr.Calc

All Implemented Interfaces:

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

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

Calculation.

Author:

BaseX Team 2005-12, BSD License, Christian Gruen

Enum Constant Summary

Enum Constants

Enum Constant and Description
DIV Division.
IDIV Integer division.
MINUS Subtraction.
MOD Modulo.
MULT Multiplication.
PLUS Addition.

Method Summary

Methods

Modifier and Type	Method and Description
abstract Item	ev(InputInfo ii, Item a, Item b) Performs the calculation.
java.lang.String	toString()
static Calc	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static Calc[]	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, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

PLUS

public static final Calc PLUS

Addition.

MINUS

public static final Calc MINUS

Subtraction.

MULT

public static final Calc MULT

Multiplication.

DIV

public static final Calc DIV

Division.

IDIV

public static final Calc IDIV

Integer division.

MOD

public static final Calc MOD

Modulo.

Method Detail

values

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

Returns:

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

valueOf

public static Calc 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

ev

public abstract Item ev(InputInfo ii,
      Item a,
      Item b)
                 throws QueryException

Performs the calculation.

Parameters:

ii - input info

a - first item

b - second item

Returns:

result type

Throws:

QueryException - query exception

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Enum<Calc>