org.basex.query.xpath.item
Enum Calc

java.lang.Object
  java.lang.Enum<Calc>
      org.basex.query.xpath.item.Calc

All Implemented Interfaces:

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

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

This enumeration assembles different value comparisons.

Author:

Workgroup DBIS, University of Konstanz 2005-08, ISC License, Christian Gruen

Enum Constant Summary

DIV
Expression Type: division.

MINUS
Expression Type: subtraction.

MOD
Expression Type: modulo.

MULT
Expression Type: multiplication.

PLUS
Expression Type: addition.

Field Summary

java.lang.String

name String representation.

Method Summary

abstract double	eval(double d1, double d2) Evaluates the expression.
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

compareTo, equals, 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

Expression Type: addition.

MINUS

public static final Calc MINUS

Expression Type: subtraction.

MULT

public static final Calc MULT

Expression Type: multiplication.

DIV

public static final Calc DIV

Expression Type: division.

MOD

public static final Calc MOD

Expression Type: modulo.

Field Detail

name

public final java.lang.String name

String representation.

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

eval

public abstract double eval(double d1,
                            double d2)

Evaluates the expression.

Parameters:

d1 - first value

d2 - second value

Returns:

result

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Enum<Calc>