is.codion.common.properties

Interface PropertyValue<T>

Type Parameters:

T - the value type

All Superinterfaces:

EventDataListener<T>, EventObserver<T>, Supplier<T>, Value<T>, ValueObserver<T>

public interface PropertyValue<T>
extends Value<T>

A Value associated with a named property.

Nested Class Summary

Nested classes/interfaces inherited from interface is.codion.common.value.Value

Value.Validator<T>

Method Summary

Modifier and Type	Method and Description
void	clear() Sets this value to null as well as removing it from the underlying store and clearing the system property.
T	getOrThrow() Returns the underlying value, if the value is null then a IllegalStateException is thrown.
T	getOrThrow(String message) Returns the underlying value, if the value is null then a IllegalStateException is thrown.
String	propertyName()

Methods inherited from interface is.codion.common.value.Value

addValidator, link, link, linkedValues, observer, propertyValue, removeValidator, set, unlink, unlink, validators, value, value, value, value, value

Methods inherited from interface is.codion.common.value.ValueObserver

equalTo, isNotNull, isNull, isNullable, toOptional

Methods inherited from interface is.codion.common.event.EventObserver

addDataListener, addListener, removeDataListener, removeListener

Methods inherited from interface java.util.function.Supplier

get

Methods inherited from interface is.codion.common.event.EventDataListener

onEvent

Method Detail

propertyName

String propertyName()

Returns:

the name of the property this value represents

getOrThrow

T getOrThrow()
      throws IllegalStateException

Returns the underlying value, if the value is null then a IllegalStateException is thrown.

Returns:

the value, if available

Throws:

IllegalStateException - in case the underlying value is null

getOrThrow

T getOrThrow(String message)
      throws IllegalStateException

Returns the underlying value, if the value is null then a IllegalStateException is thrown.

Parameters:

message - the error message to use when throwing

Returns:

the value, if available

Throws:

IllegalStateException - in case the underlying value is null

clear

void clear()

Sets this value to null as well as removing it from the underlying store and clearing the system property.