Type Parameters:

V - type of the value.

All Superinterfaces:

EventSource<ObservableEvent<V>,ObservableEventListener<? super V>>, ObservableValue<V>, ReadableValue<V>, Supplier<V>

All Known Subinterfaces:

BigDecimalExpression, BigIntegerExpression, BooleanExpression, ByteExpression, ComparableExpression<V>, DoubleExpression, FloatExpression, InstantExpression, IntegerExpression, LocalDateExpression, LocalDateTimeExpression, LocalTimeExpression, LongExpression, NumberExpression<N>, OffsetDateTimeExpression, OffsetTimeExpression, ReadableBeanProperty<V>, ReadableBigDecimalProperty, ReadableBigIntegerProperty, ReadableBooleanProperty, ReadableByteProperty, ReadableDoubleProperty, ReadableFloatProperty, ReadableInstantProperty, ReadableIntegerProperty, ReadableLocalDateProperty, ReadableLocalDateTimeProperty, ReadableLocalTimeProperty, ReadableLongProperty, ReadableNumberProperty<N>, ReadableObjectProperty<V>, ReadableOffsetDateTimeProperty, ReadableOffsetTimeProperty, ReadableShortProperty, ReadableSimpleProperty<V>, ReadableStringProperty, ReadableZonedDateTimeProperty, ShortExpression, StringExpression, TemporalExpression<V>, WritableBeanProperty<V>, WritableBigDecimalProperty, WritableBigIntegerProperty, WritableBooleanProperty, WritableByteProperty, WritableDoubleProperty, WritableFloatProperty, WritableInstantProperty, WritableIntegerProperty, WritableLocalDateProperty, WritableLocalDateTimeProperty, WritableLocalTimeProperty, WritableLongProperty, WritableNumberProperty<N>, WritableObjectProperty<V>, WritableOffsetDateTimeProperty, WritableOffsetTimeProperty, WritableShortProperty, WritableSimpleProperty<V>, WritableStringProperty, WritableZonedDateTimeProperty, ZonedDateTimeExpression

All Known Implementing Classes:

BeanProperty, BigDecimalBinding, BigDecimalProperty, BigIntegerBinding, BigIntegerProperty, Binding, BooleanBinding, BooleanProperty, ByteBinding, ByteProperty, DoubleBinding, DoubleProperty, DurationInSecondsProperty, FloatBinding, FloatProperty, IdProperty, InstantBinding, InstantProperty, IntegerBinding, IntegerProperty, LinkProperty, LocalDateBinding, LocalDateProperty, LocalDateTimeBinding, LocalDateTimeProperty, LocalTimeBinding, LocalTimeProperty, LongBinding, LongProperty, NumberBinding, NumberProperty, ObjectProperty, OffsetDateTimeBinding, OffsetDateTimeBinding, OffsetDateTimeProperty, OffsetTimeProperty, RangeProperty, ShortBinding, ShortProperty, SimpleProperty, StringBinding, StringListProperty, StringProperty, TemporalProperty, ZonedDateTimeBinding, ZonedDateTimeProperty
```
public interface Expression<V>
extends ObservableValue<V>
```
An Expression is an ObservableValue providing convenience methods to created dynamically computed values.

Since:

1.0.0

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default StringExpression`	`asString()`
`default void`	`dispose()`	Called if this `Expression` will not be used anymore and any references can be removed.
`default BooleanExpression`	`isEqualTo(ObservableValue<V> other)`
`default BooleanExpression`	`isEqualTo(V other)`
`default BooleanExpression`	`isNotEqualTo(ObservableValue<V> other)`
`default BooleanExpression`	`isNotEqualTo(V other)`
`default BooleanExpression`	`isNotNull()`
`default BooleanExpression`	`isNull()`

Methods inherited from interface io.github.mmm.event.EventSource
addListener, addListener, addWeakListener, removeListener

Methods inherited from interface io.github.mmm.value.observable.ObservableValue
toString

Methods inherited from interface io.github.mmm.value.ReadableValue
get, getSafe

- Method Detail
  - isEqualTo
```
default BooleanExpression isEqualTo(ObservableValue<V> other)
```
    Parameters:
    
    other - the ObservableValue to check.
    
    Returns:
    
    a new BooleanBinding holding true if the value of this Expression and the value of the given ObservableValue are equal.
  - isEqualTo
```
default BooleanExpression isEqualTo(V other)
```
    Parameters:
    
    other - the constant value to check.
    
    Returns:
    
    a new BooleanBinding holding true if the value of this property and the given value are equal.
  - isNotEqualTo
```
default BooleanExpression isNotEqualTo(ObservableValue<V> other)
```
    Parameters:
    
    other - the ObservableValue to check.
    
    Returns:
    
    a new BooleanBinding holding true if the value of this property and the value of the given ObservableValue are NOT equal.
  - isNotEqualTo
```
default BooleanExpression isNotEqualTo(V other)
```
    Parameters:
    
    other - the constant value to check.
    
    Returns:
    
    a new BooleanBinding holding true if the value of this property and the given value are NOT equal.
  - isNull
```
default BooleanExpression isNull()
```
    Returns:
    
    a new BooleanBinding holding true if the value of this property is null.
  - isNotNull
```
default BooleanExpression isNotNull()
```
    Returns:
    
    a new BooleanBinding holding true if the value of this property is NOT null.
  - asString
```
default StringExpression asString()
```
    Returns:
    
    a new StringBinding holding the String-repersentation of the value.
  - dispose
```
default void dispose()
```
    Called if this Expression will not be used anymore and any references can be removed. Any ObservableEventListener added to dependent ObservableValues will be removed.

Interface Expression<V>

Method Summary

Methods inherited from interface io.github.mmm.event.EventSource

Methods inherited from interface io.github.mmm.value.observable.ObservableValue

Methods inherited from interface io.github.mmm.value.ReadableValue

Method Detail

isEqualTo

isEqualTo

isNotEqualTo

isNotEqualTo

isNull

isNotNull

asString

dispose