org.springframework.data.convert

Class ClassGeneratingEntityInstantiator

java.lang.Object

org.springframework.data.convert.ClassGeneratingEntityInstantiator

All Implemented Interfaces:

EntityInstantiator

Direct Known Subclasses:

KotlinClassGeneratingEntityInstantiator

public class ClassGeneratingEntityInstantiator
extends Object
implements EntityInstantiator

An EntityInstantiator that can generate byte code to speed-up dynamic object instantiation. Uses the PersistentEntity's PreferredConstructor to instantiate an instance of the entity by dynamically generating factory methods with appropriate constructor invocations via ASM. If we cannot generate byte code for a type, we gracefully fall-back to the ReflectionEntityInstantiator.

Since:

1.11

Author:

Thomas Darimont, Oliver Gierke, Phillip Webb, Christoph Strobl, Mark Paluch

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ClassGeneratingEntityInstantiator.ObjectInstantiator Needs to be public as otherwise the implementation class generated does not see the interface from the classloader.

Constructor Summary

Constructors

Constructor and Description
ClassGeneratingEntityInstantiator() Creates a new ClassGeneratingEntityInstantiator.

Method Summary

Modifier and Type	Method and Description
<T,E extends PersistentEntity<? extends T,P>,P extends PersistentProperty<P>> T	createInstance(E entity, ParameterValueProvider<P> provider) Creates a new instance of the given entity using the given source to pull data from.
protected EntityInstantiator	doCreateEntityInstantiator(PersistentEntity<?,?> entity)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClassGeneratingEntityInstantiator

public ClassGeneratingEntityInstantiator()

Creates a new ClassGeneratingEntityInstantiator.

Method Detail

createInstance

public <T,E extends PersistentEntity<? extends T,P>,P extends PersistentProperty<P>> T createInstance(E entity,
                                                                                                      ParameterValueProvider<P> provider)

Description copied from interface: EntityInstantiator

Creates a new instance of the given entity using the given source to pull data from.

Specified by:

createInstance in interface EntityInstantiator

Parameters:

entity - will not be null.

provider - will not be null.

Returns:

doCreateEntityInstantiator

protected EntityInstantiator doCreateEntityInstantiator(PersistentEntity<?,?> entity)

Parameters:

entity -

Returns: