/*
* Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* Licensed Materials - Property of IBM
* RMI-IIOP v1.0
* Copyright IBM Corp. 1998 1999 All Rights Reserved
*
*/
package com.sun.corba.se.impl.io;
import java.lang.reflect.Field;
import java.lang.Comparable;
import java.util.Hashtable;
import sun.corba.Bridge ;
import java.security.AccessController ;
import java.security.PrivilegedAction ;
/**
* A description of a field in a serializable class.
* A array of these is used to declare the persistent fields of
* a class.
*
*/
public class ObjectStreamField implements Comparable
{
private static final Bridge bridge =
(Bridge)AccessController.doPrivileged(
new PrivilegedAction() {
public Object run() {
return Bridge.get() ;
}
}
) ;
/**
* Create a named field with the specified type.
*/
ObjectStreamField(String n, Class clazz) {
name = n;
this.clazz = clazz;
// Compute the typecode for easy switching
if (clazz.isPrimitive()) {
if (clazz == Integer.TYPE) {
type = 'I';
} else if (clazz == Byte.TYPE) {
type = 'B';
} else if (clazz == Long.TYPE) {
type = 'J';
} else if (clazz == Float.TYPE) {
type = 'F';
} else if (clazz == Double.TYPE) {
type = 'D';
} else if (clazz == Short.TYPE) {
type = 'S';
} else if (clazz == Character.TYPE) {
type = 'C';
} else if (clazz == Boolean.TYPE) {
type = 'Z';
}
} else if (clazz.isArray()) {
type = '[';
typeString = ObjectStreamClass.getSignature(clazz);
} else {
type = 'L';
typeString = ObjectStreamClass.getSignature(clazz);
}
if (typeString != null)
signature = typeString;
else
signature = String.valueOf(type);
}
ObjectStreamField(Field field) {
this(field.getName(), field.getType());
setField( field ) ;
}
/**
* Create an ObjectStreamField containing a reflected Field.
*/
ObjectStreamField(String n, char t, Field f, String ts)
{
name = n;
type = t;
setField( f ) ;
typeString = ts;
if (typeString != null)
signature = typeString;
else
signature = String.valueOf(type);
}
/**
* Get the name of this field.
*/
public String getName() {
return name;
}
/**
* Get the type of the field.
*/
public Class getType() {
if (clazz != null)
return clazz;
switch (type) {
case 'B': clazz = Byte.TYPE;
break;
case 'C': clazz = Character.TYPE;
break;
case 'S': clazz = Short.TYPE;
break;
case 'I': clazz = Integer.TYPE;
break;
case 'J': clazz = Long.TYPE;
break;
case 'F': clazz = Float.TYPE;
break;
case 'D': clazz = Double.TYPE;
break;
case 'Z': clazz = Boolean.TYPE;
break;
case '[':
case 'L':
clazz = Object.class;
break;
}
return clazz;
}
public char getTypeCode() {
return type;
}
public String getTypeString() {
return typeString;
}
Field getField() {
return field;
}
void setField(Field field) {
this.field = field;
this.fieldID = bridge.objectFieldOffset( field ) ;
}
/*
* Default constructor creates an empty field.
* Usually used just to get to the sort functions.
*/
ObjectStreamField() {
}
/**
* test if this field is a primitive or not.
*/
public boolean isPrimitive() {
return (type != '[' && type != 'L');
}
/**
* Compare this with another ObjectStreamField.
* return -1 if this is smaller, 0 if equal, 1 if greater
* types that are primitives are "smaller" than objects.
* if equal, the names are compared.
*/
public int compareTo(Object o) {
ObjectStreamField f2 = (ObjectStreamField)o;
boolean thisprim = (this.typeString == null);
boolean otherprim = (f2.typeString == null);
if (thisprim != otherprim) {
return (thisprim ? -1 : 1);
}
return this.name.compareTo(f2.name);
}
/**
* Compare the types of two class descriptors.
* The match if they have the same primitive types.
* or if they are both objects and the object types match.
*/
public boolean typeEquals(ObjectStreamField other) {
if (other == null || type != other.type)
return false;
/* Return true if the primitive types matched */
if (typeString == null && other.typeString == null)
return true;
return ObjectStreamClass.compareClassNames(typeString,
other.typeString,
'/');
}
/* Returns the signature of the Field.
*
*/
public String getSignature() {
return signature;
}
/**
* Return a string describing this field.
*/
public String toString() {
if (typeString != null)
return typeString + " " + name;
else
return type + " " + name;
}
public Class getClazz() {
return clazz;
}
/* Returns the Field ID
*
*/
public long getFieldID() {
return fieldID ;
}
private String name; // the name of the field
private char type; // type first byte of the type signature
private Field field; // Reflected field
private String typeString; // iff object, typename
private Class clazz; // the type of this field, if has been resolved
// the next 2 things are RMI-IIOP specific, it can be easily
// removed, if we can figure out all place where there are dependencies
// to this. Signature is esentially equal to typestring. Then
// essentially we can use the java.io.ObjectStreamField as such.
private String signature; // the signature of the field
private long fieldID = Bridge.INVALID_FIELD_OFFSET ;
}