io.micronaut.data.model.runtime

Interface PropertyAutoPopulator<T extends java.lang.annotation.Annotation>

Type Parameters:

T - the populated annotation type

All Superinterfaces:

io.micronaut.core.order.Ordered

All Known Implementing Classes:

AutoTimestampEntityEventListener, VersionGeneratingEntityEventListener

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@Indexed(value=PropertyAutoPopulator.class)
 @Internal
 @FunctionalInterface
public interface PropertyAutoPopulator<T extends java.lang.annotation.Annotation>
extends io.micronaut.core.order.Ordered

The interface allows automatically populating new values, potentially based on the previous value for AutoPopulated properties.

NOTE: Regarded as experimental and internal at this stage.

Since:

2.3.0

Author:

Denis Stepanov, graemerocher

See Also:

AutoPopulated

Field Summary

Fields inherited from interface io.micronaut.core.order.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Method Summary

Modifier and Type	Method and Description
java.lang.Object	populate(RuntimePersistentProperty<?> property, java.lang.Object previousValue) Auto-populating the property.

Methods inherited from interface io.micronaut.core.order.Ordered

getOrder

Method Detail

populate

@NonNull
java.lang.Object populate(RuntimePersistentProperty<?> property,
                                   @Nullable
                                   java.lang.Object previousValue)

Auto-populating the property.

Parameters:

property - the property to auto-populate

previousValue - the previous value, if any

Returns:

new value