Package dev.morphia.critter.parser.gizmo

Class VarHandleAccessorGenerator

java.lang.Object

dev.morphia.critter.parser.gizmo.BaseGizmoGenerator

dev.morphia.critter.parser.gizmo.VarHandleAccessorGenerator

public class VarHandleAccessorGenerator
extends BaseGizmoGenerator

Generates a Gizmo-based PropertyAccessor implementation that uses VarHandle (for fields) or MethodHandle (for getter/setter pairs) to access a single property of a Morphia entity class.

Field Summary

Fields inherited from class dev.morphia.critter.parser.gizmo.BaseGizmoGenerator

baseName, critterClassLoader, entity, generatedType

Constructor Summary

Constructors

Constructor	Description
VarHandleAccessorGenerator(Class<?> entity, dev.morphia.critter.CritterClassLoader critterClassLoader, org.objectweb.asm.tree.FieldNode field)	Creates a generator for a field-based property accessor using a VarHandle.
VarHandleAccessorGenerator(Class<?> entity, dev.morphia.critter.CritterClassLoader critterClassLoader, org.objectweb.asm.tree.MethodNode method)	Creates a generator for a method-based property accessor using MethodHandles.

Method Summary

Modifier and Type	Method	Description
VarHandleAccessorGenerator	emit()	Emits the generated property accessor class and returns this generator.
String	getWrapperType()	Returns the fully-qualified name of the wrapper class for the property type, or the property type itself if it is not a primitive.
boolean	isPrimitive()	Returns true if the property type is a Java primitive.

Methods inherited from class dev.morphia.critter.parser.gizmo.BaseGizmoGenerator

getBuilder, getCreator

Methods inherited from class java.lang.Object

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

Constructor Details

VarHandleAccessorGenerator

public VarHandleAccessorGenerator(Class<?> entity,
 dev.morphia.critter.CritterClassLoader critterClassLoader,
 org.objectweb.asm.tree.FieldNode field)

Creates a generator for a field-based property accessor using a VarHandle.

Parameters:

entity - the entity class that owns the field

critterClassLoader - the class loader that will receive the generated bytecode

field - the ASM field node representing the property

VarHandleAccessorGenerator

public VarHandleAccessorGenerator(Class<?> entity,
 dev.morphia.critter.CritterClassLoader critterClassLoader,
 org.objectweb.asm.tree.MethodNode method)

Creates a generator for a method-based property accessor using MethodHandles.

Parameters:

entity - the entity class that owns the getter

critterClassLoader - the class loader that will receive the generated bytecode

method - the ASM method node representing the getter

Method Details

isPrimitive

public boolean isPrimitive()

Returns true if the property type is a Java primitive.

Returns:

true if the property type is primitive

getWrapperType

public String getWrapperType()

Returns the fully-qualified name of the wrapper class for the property type, or the property type itself if it is not a primitive.

Returns:

the wrapper type name

emit

public VarHandleAccessorGenerator emit()

Emits the generated property accessor class and returns this generator.

Returns:

this generator after emitting