org.knime.base.node.mine.decisiontree2

Enum PMMLOperator

java.lang.Object

java.lang.Enum<PMMLOperator>

org.knime.base.node.mine.decisiontree2.PMMLOperator

All Implemented Interfaces:

Serializable, Comparable<PMMLOperator>

public enum PMMLOperator
extends Enum<PMMLOperator>

Contains the operators that are specified in PMML for SimplePredicates.

Author:

Dominik Morent, KNIME.com, Zurich, Switzerland

Enum Constant Summary

Enum Constants

Enum Constant and Description
EQUAL = operator.
GREATER_OR_EQUAL >= operator.
GREATER_THAN > operator.
IS_MISSING is missing operator.
IS_NOT_MISSING is not missing operator.
LESS_OR_EQUAL <= operator.
LESS_THAN < operator.
NOT_EQUAL != operator.

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(Double a, Double b) Evaluates the operator on the passed double values.
boolean	evaluate(String a, String b) Evaluates the operator on the passed strings.
static PMMLOperator	get(String represent) Returns the corresponding operator for the passed representation.
String	getSymbol() Returns the symbol for the operator.
String	toString()
static PMMLOperator	valueOf(String name) Returns the enum constant of this type with the specified name.
static PMMLOperator[]	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

EQUAL

public static final PMMLOperator EQUAL

= operator.

NOT_EQUAL

public static final PMMLOperator NOT_EQUAL

!= operator.

LESS_THAN

public static final PMMLOperator LESS_THAN

< operator.

LESS_OR_EQUAL

public static final PMMLOperator LESS_OR_EQUAL

<= operator.

GREATER_THAN

public static final PMMLOperator GREATER_THAN

> operator.

GREATER_OR_EQUAL

public static final PMMLOperator GREATER_OR_EQUAL

>= operator.

IS_MISSING

public static final PMMLOperator IS_MISSING

is missing operator.

IS_NOT_MISSING

public static final PMMLOperator IS_NOT_MISSING

is not missing operator.

Method Detail

values

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

Returns:

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

valueOf

public static PMMLOperator 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

toString

public String toString()

Overrides:

toString in class Enum<PMMLOperator>

get

public static PMMLOperator get(String represent)
                        throws InstantiationException

Returns the corresponding operator for the passed representation.

Parameters:

represent - the representation to find the operator for

Returns:

the operator

Throws:

InstantiationException - - if no such PMML operator exists

getSymbol

public String getSymbol()

Returns the symbol for the operator.

Returns:

the symbol

evaluate

public boolean evaluate(String a,
                        String b)

Evaluates the operator on the passed strings.

Parameters:

a - the first string

b - the second string (only applicable for binary operations, otherwise ignored)

Returns:

the result of the operation

evaluate

public boolean evaluate(Double a,
                        Double b)

Evaluates the operator on the passed double values.

Parameters:

a - the first double value

b - the second double value (only applicable for binary operations, otherwise ignored)

Returns:

the result of the operation