Class SunUnsafeReflectionProvider

java.lang.Object

com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider

com.thoughtworks.xstream.converters.reflection.SunLimitedUnsafeReflectionProvider

com.thoughtworks.xstream.converters.reflection.SunUnsafeReflectionProvider

All Implemented Interfaces:

ReflectionProvider

Direct Known Subclasses:

Sun14ReflectionProvider

public class SunUnsafeReflectionProvider
extends SunLimitedUnsafeReflectionProvider

Instantiates a new object bypassing the constructor using undocumented internal JDK features.

The code in the constructor will never be executed and parameters do not have to be known. This is the same method used by the internals of standard Java serialization, but relies on internal code (sun.misc.Unsafe) that may not be present on all JVMs.

The implementation will use the same internals to write into fields. This is a lot faster and was additionally the only possibility to set final fields prior to Java 5.

Since:

1.4.7

Nested Class Summary

Nested classes/interfaces inherited from interface ReflectionProvider

ReflectionProvider.Visitor

Field Summary

Fields

Modifier and Type	Field	Description
private Map	fieldOffsetCache

Fields inherited from class SunLimitedUnsafeReflectionProvider

exception, unsafe

Fields inherited from class PureJavaReflectionProvider

fieldDictionary

Constructor Summary

Constructors

Constructor	Description
SunUnsafeReflectionProvider()
SunUnsafeReflectionProvider(FieldDictionary dic)

Method Summary

Modifier and Type	Method	Description
private long	getFieldOffset(Field f)
protected void	init()
private Object	readResolve()
private void	write(Field field, Object object, Object value)
void	writeField(Object object, String fieldName, Object value, Class definedIn)

Methods inherited from class SunLimitedUnsafeReflectionProvider

newInstance, validateFieldAccess

Methods inherited from class PureJavaReflectionProvider

fieldDefinedInClass, fieldModifiersSupported, getField, getFieldOrNull, getFieldType, setFieldDictionary, visitSerializableFields

Methods inherited from class Object

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

Field Details

fieldOffsetCache

private transient Map fieldOffsetCache

Constructor Details

SunUnsafeReflectionProvider

public SunUnsafeReflectionProvider()

Since:

1.4.7

SunUnsafeReflectionProvider

public SunUnsafeReflectionProvider(FieldDictionary dic)

Since:

1.4.7

Method Details

writeField

public void writeField(Object object,
 String fieldName,
 Object value,
 Class definedIn)

Specified by:

writeField in interface ReflectionProvider

Overrides:

writeField in class PureJavaReflectionProvider

write

private void write(Field field,
 Object object,
 Object value)

getFieldOffset

private long getFieldOffset(Field f)

readResolve

private Object readResolve()

init

protected void init()

Overrides:

init in class PureJavaReflectionProvider