net.sf.doolin.gui.display
Enum ConditionalOperator

java.lang.Object
  java.lang.Enum<ConditionalOperator>
      net.sf.doolin.gui.display.ConditionalOperator

All Implemented Interfaces:

Serializable, Comparable<ConditionalOperator>

public enum ConditionalOperator
extends Enum<ConditionalOperator>

Operator that evaluates to boolean results.

Author:

Damien Coraboeuf

Enum Constant Summary

BLANK
Evaluates to true if value as a string is blank.

BOOLEAN_FALSE
Evaluates to true if value can be evaluated to a boolean that is false.

BOOLEAN_TRUE
Evaluates to true if value can be evaluated to a boolean that is true.

EQ
Evaluates to true if value is equal to the operand.

EQ_STR
Evaluates to true if value is equal to the operand when comparing their String representation.

GT
Evaluates to true if value is greater than the operand.

GTE
Evaluates to true if value is greater or equal than the operand.

LT
Evaluates to true if value is less than the operand.

LTE
Evaluates to true if value is less or equal than the operand.

NEQ
Evaluates to true if value is not equal to the operand.

NOT_BLANK
Evaluates to true if value as a string is not blank.

NOT_NULL
Evaluates to true if value is not null.

NULL
Evaluates to true if value is * null.

Method Summary

abstract boolean	evaluate(Object value, Object operand) Evaluates the operator with the value and the operand.
static ConditionalOperator	valueOf(String name) Returns the enum constant of this type with the specified name.
static ConditionalOperator[]	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

NOT_NULL

public static final ConditionalOperator NOT_NULL

Evaluates to true if value is not null. The operand is not used.

NULL

public static final ConditionalOperator NULL

Evaluates to true if value is * null. The operand is not used.

NOT_BLANK

public static final ConditionalOperator NOT_BLANK

Evaluates to true if value as a string is not blank. The operand is not used.

BLANK

public static final ConditionalOperator BLANK

Evaluates to true if value as a string is blank. The operand is not used.

EQ

public static final ConditionalOperator EQ

Evaluates to true if value is equal to the operand.

EQ_STR

public static final ConditionalOperator EQ_STR

Evaluates to true if value is equal to the operand when comparing their String representation.

NEQ

public static final ConditionalOperator NEQ

Evaluates to true if value is not equal to the operand.

GTE

public static final ConditionalOperator GTE

Evaluates to true if value is greater or equal than the operand.

GT

public static final ConditionalOperator GT

Evaluates to true if value is greater than the operand.

LTE

public static final ConditionalOperator LTE

Evaluates to true if value is less or equal than the operand.

LT

public static final ConditionalOperator LT

Evaluates to true if value is less than the operand.

BOOLEAN_TRUE

public static final ConditionalOperator BOOLEAN_TRUE

Evaluates to true if value can be evaluated to a boolean that is true.

BOOLEAN_FALSE

public static final ConditionalOperator BOOLEAN_FALSE

Evaluates to true if value can be evaluated to a boolean that is false.

Method Detail

values

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

Returns:

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

valueOf

public static ConditionalOperator 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

evaluate

public abstract boolean evaluate(Object value,
                                 Object operand)

Evaluates the operator with the value and the operand.

Parameters:

value - Value

operand - Operand (may not be used by some operators)

Returns:

Result of the evaluation