java.io
Class ObjectStreamClass.FieldReflector

java.lang.Object
  java.io.ObjectStreamClass.FieldReflector

Enclosing class:

ObjectStreamClass

private static class ObjectStreamClass.FieldReflector

extends Object

Class for setting and retrieving serializable field values in batch.

Field Summary

private ObjectStreamField[]	fields fields to operate on
private long[]	keys unsafe field keys
private int	numPrimFields number of primitive fields
private int[]	offsets field data offsets
private char[]	typeCodes field type codes
private Class[]	types field types
private static sun.misc.Unsafe	unsafe handle for performing unsafe operations

Constructor Summary

(package private)

ObjectStreamClass.FieldReflector(ObjectStreamField[] fields) Constructs FieldReflector capable of setting/getting values from the subset of fields whose ObjectStreamFields contain non-null reflective Field objects.

Method Summary

(package private) ObjectStreamField[]	getFields() Returns list of ObjectStreamFields representing fields operated on by this reflector.
(package private) void	getObjFieldValues(Object obj, Object[] vals) Fetches the serializable object field values of object obj and stores them in array vals starting at offset 0.
(package private) void	getPrimFieldValues(Object obj, byte[] buf) Fetches the serializable primitive field values of object obj and marshals them into byte array buf starting at offset 0.
(package private) void	setObjFieldValues(Object obj, Object[] vals) Sets the serializable object fields of object obj using values from array vals starting at offset 0.
(package private) void	setPrimFieldValues(Object obj, byte[] buf) Sets the serializable primitive fields of object obj using values unmarshalled from byte array buf starting at offset 0.

Methods inherited from class java.lang.Object

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

Field Detail

unsafe

private static final sun.misc.Unsafe unsafe

handle for performing unsafe operations

fields

private final ObjectStreamField[] fields

fields to operate on

numPrimFields

private final int numPrimFields

number of primitive fields

keys

private final long[] keys

unsafe field keys

offsets

private final int[] offsets

field data offsets

typeCodes

private final char[] typeCodes

field type codes

types

private final Class[] types

field types

Constructor Detail

ObjectStreamClass.FieldReflector

ObjectStreamClass.FieldReflector(ObjectStreamField[] fields)

Constructs FieldReflector capable of setting/getting values from the subset of fields whose ObjectStreamFields contain non-null reflective Field objects. ObjectStreamFields with null Fields are treated as filler, for which get operations return default values and set operations discard given values.

Method Detail

getFields

ObjectStreamField[] getFields()

Returns list of ObjectStreamFields representing fields operated on by this reflector. The shared/unshared values and Field objects contained by ObjectStreamFields in the list reflect their bindings to locally defined serializable fields.

getPrimFieldValues

void getPrimFieldValues(Object obj,
                        byte[] buf)

Fetches the serializable primitive field values of object obj and marshals them into byte array buf starting at offset 0. The caller is responsible for ensuring that obj is of the proper type.

setPrimFieldValues

void setPrimFieldValues(Object obj,
                        byte[] buf)

Sets the serializable primitive fields of object obj using values unmarshalled from byte array buf starting at offset 0. The caller is responsible for ensuring that obj is of the proper type.

getObjFieldValues

void getObjFieldValues(Object obj,
                       Object[] vals)

Fetches the serializable object field values of object obj and stores them in array vals starting at offset 0. The caller is responsible for ensuring that obj is of the proper type.

setObjFieldValues

void setObjFieldValues(Object obj,
                       Object[] vals)

Sets the serializable object fields of object obj using values from array vals starting at offset 0. The caller is responsible for ensuring that obj is of the proper type; however, attempts to set a field with a value of the wrong type will trigger an appropriate ClassCastException.