com.github.benmanes.caffeine.jcache.copy

Class AbstractCopier<A>

java.lang.Object

com.github.benmanes.caffeine.jcache.copy.AbstractCopier<A>

All Implemented Interfaces:

Copier

Direct Known Subclasses:

JavaSerializationCopier

public abstract class AbstractCopier<A>
extends Object
implements Copier

A skeleton implementation where subclasses provide the serialization strategy. Serialization is not performed if the type is a known immutable, an array of known immutable types, or specially handled by a known cloning strategy.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractCopier()
protected	AbstractCopier(Set<Class<?>> immutableClasses, Map<Class<?>,Function<Object,Object>> deepCopyStrategies)

Method Summary

Modifier and Type	Method and Description
protected boolean	canDeeplyCopy(Class<?> clazz) Returns if the class has a known deep copy strategy.
<T> T	copy(T object, ClassLoader classLoader) Returns a deep copy of the object.
protected abstract Object	deserialize(A data, ClassLoader classLoader) Deserializes the data using the provided classloader.
protected boolean	isImmutable(Class<?> clazz) Returns if the class is an immutable type and does not need to be copied.
static Map<Class<?>,Function<Object,Object>>	javaDeepCopyStrategies()
static Set<Class<?>>	javaImmutableClasses()
protected <T> T	roundtrip(T object, ClassLoader classLoader) Performs the serialization and deserialization, returning the copied object.
protected abstract A	serialize(Object object) Serializes the object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.github.benmanes.caffeine.jcache.copy.Copier

identity

Constructor Detail

AbstractCopier

protected AbstractCopier()

AbstractCopier

protected AbstractCopier(Set<Class<?>> immutableClasses,
                         Map<Class<?>,Function<Object,Object>> deepCopyStrategies)

Method Detail

javaImmutableClasses

public static Set<Class<?>> javaImmutableClasses()

Returns:

the set of Java native classes that are immutable

javaDeepCopyStrategies

public static Map<Class<?>,Function<Object,Object>> javaDeepCopyStrategies()

Returns:

the set of Java native classes that are deeply copied.

copy

public <T> T copy(T object,
                  ClassLoader classLoader)

Description copied from interface: Copier

Returns a deep copy of the object.

Specified by:

copy in interface Copier

Type Parameters:

T - the type of object being copied

Parameters:

object - the object to copy

classLoader - the classloader to instantiate with

Returns:

a copy of the object

isImmutable

protected boolean isImmutable(Class<?> clazz)

Returns if the class is an immutable type and does not need to be copied.

Parameters:

clazz - the class of the object being copied

Returns:

if the class is an immutable type and does not need to be copied

canDeeplyCopy

protected boolean canDeeplyCopy(Class<?> clazz)

Returns if the class has a known deep copy strategy.

Parameters:

clazz - the class of the object being copied

Returns:

if the class has a known deep copy strategy

roundtrip

protected <T> T roundtrip(T object,
                          ClassLoader classLoader)

Performs the serialization and deserialization, returning the copied object.

Type Parameters:

T - the type of object being copied

Parameters:

object - the object to serialize

classLoader - the classloader to create the instance with

Returns:

the deserialized object

serialize

protected abstract A serialize(Object object)

Serializes the object.

Parameters:

object - the object to serialize

Returns:

the serialized bytes

deserialize

protected abstract Object deserialize(A data,
                                      ClassLoader classLoader)

Deserializes the data using the provided classloader.

Parameters:

data - the serialized bytes

classLoader - the classloader to create the instance with

Returns:

the deserialized object