Package com.cedarsoftware.io.reflect

Class Accessor

java.lang.Object

com.cedarsoftware.io.reflect.Accessor

public class Accessor
extends Object

High-performance field accessor utility that automatically adapts to different JDK versions for optimal performance and compatibility.

This class uses the java.version system property to automatically detect the JDK version and select the most appropriate field access strategy:

• JDK 8-16: Uses MethodHandle for field access with Field.get() fallback
• JDK 17+: Uses VarHandle for improved performance and module system compatibility

Author:

Kenny Partlow (kpartlow@gmail.com)
Copyright (c) Cedar Software LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

License

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Method Summary

Modifier and Type	Method	Description
static Accessor	createFieldAccessor(Field field, String uniqueFieldName)
static Accessor	createMethodAccessor(Field field, String methodName, String uniqueFieldName)
String	getActualFieldName()
Class<?>	getDeclaringClass()
String	getFieldOrMethodName()	The display name will be either the underlying field name or the underlying method name from which the method handle was created.
Class<?>	getFieldType()
Type	getGenericType()
MethodHandle	getMethodHandle()
String	getUniqueFieldName()	The unique field name if two fields have the same name in the same class structure, the more parent field will be qualified with the ShortName of the Declaring class
boolean	isMethod()
boolean	isPublic()
Object	retrieve(Object o)

Methods inherited from class java.lang.Object

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

Method Details

createFieldAccessor

public static Accessor createFieldAccessor(Field field,
 String uniqueFieldName)

createMethodAccessor

public static Accessor createMethodAccessor(Field field,
 String methodName,
 String uniqueFieldName)

retrieve

public Object retrieve(Object o)

getMethodHandle

public MethodHandle getMethodHandle()

isMethod

public boolean isMethod()

getFieldType

public Class<?> getFieldType()

getDeclaringClass

public Class<?> getDeclaringClass()

getGenericType

public Type getGenericType()

getActualFieldName

public String getActualFieldName()

getUniqueFieldName

public String getUniqueFieldName()

The unique field name if two fields have the same name in the same class structure, the more parent field will be qualified with the ShortName of the Declaring class

getFieldOrMethodName

public String getFieldOrMethodName()

The display name will be either the underlying field name or the underlying method name from which the method handle was created.

isPublic

public boolean isPublic()