Package org.apache.tapestry5.plastic

Enum Condition

java.lang.Object

java.lang.Enum<Condition>

org.apache.tapestry5.plastic.Condition

All Implemented Interfaces:

Serializable, Comparable<Condition>

public enum Condition
extends Enum<Condition>

Condition used with InstructionBuilder.when(Condition, WhenCallback). Most conditions pop the top element off the stack; some pop two elements.

Enum Constant Summary

Enum Constants

Enum Constant	Description
EQUAL	Compare two integer elements on the stack; branch if the deeper element equal to the top element.
GREATER	Compare two integer elements on the stack; branch if the deeper element is greater than the top element.
LESS_THAN	Compare two integer elements on the stack; branch if the deeper element is less than the top element.
NON_NULL	Is the top element of the stack non-null?
NON_ZERO	Is the top element of the stack not the integer zero?
NOT_EQUAL	Compare two integer elements on the stack; branch if the deeper element is not equal to the top element.
NULL	Is the top element of the stack null?
ZERO	Is the top element of the stack the integer zero?

Method Summary

Modifier and Type	Method	Description
static Condition	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Condition[]	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

NULL

public static final Condition NULL

Is the top element of the stack null?

NON_NULL

public static final Condition NON_NULL

Is the top element of the stack non-null?

ZERO

public static final Condition ZERO

Is the top element of the stack the integer zero?

NON_ZERO

public static final Condition NON_ZERO

Is the top element of the stack not the integer zero?

LESS_THAN

public static final Condition LESS_THAN

Compare two integer elements on the stack; branch if the deeper element is less than the top element.

EQUAL

public static final Condition EQUAL

Compare two integer elements on the stack; branch if the deeper element equal to the top element.

NOT_EQUAL

public static final Condition NOT_EQUAL

Compare two integer elements on the stack; branch if the deeper element is not equal to the top element.

GREATER

public static final Condition GREATER

Compare two integer elements on the stack; branch if the deeper element is greater than the top element.

Method Detail

values

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

Returns:

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

valueOf

public static Condition 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