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Public UNO Java Classes (formerly jurt,juh,ridl,unoil)
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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 http://www.apache.org/licenses/LICENSE-2.0 .
*/
package com.sun.star.uno;
/**
* This class provides static methods which aim at exploring the contents of an
* Any and extracting its value.
*
* All public methods take an Object argument that either is the immediate object,
* such as Boolean, Type, interface implementation, or an Any that contains an
* object.
*
* The methods which extract the value do a widening conversion. See the
* method comments for the respective conversions.
*/
public class AnyConverter
{
/**
* Determines the type of an Any object.
*
* @param object any object.
* @return type object.
*/
public static Type getType( Object object )
{
Type t;
if (null == object)
{
t = m_XInterface_type;
}
else if (object instanceof Any)
{
t = ((Any)object).getType();
// nested any
if (TypeClass.ANY_value == t.getTypeClass().getValue())
return getType( ((Any)object).getObject() );
}
else
{
t = new Type( object.getClass() );
}
return t;
}
/**
* Checks if the any contains the idl type void.
*
* @param object the object to check.
* @return true when the any is void, false otherwise.
*/
public static boolean isVoid(Object object){
return containsType(TypeClass.VOID, object);
}
/**
* Checks if the any contains a value of the idl type char.
*
* @param object the object to check.
* @return true when the any contains a char, false otherwise.
*/
public static boolean isChar(Object object){
return containsType(TypeClass.CHAR, object);
}
/**
* Checks if the any contains a value of the idl type boolean.
*
* @param object the object to check.
* @return true when the any contains a boolean, false otherwise.
*/
public static boolean isBoolean(Object object){
return containsType(TypeClass.BOOLEAN, object);
}
/**
* Checks if the any contains a value of the idl type byte.
*
* @param object the object to check.
* @return true when the any contains a byte, false otherwise.
*/
public static boolean isByte(Object object){
return containsType(TypeClass.BYTE, object);
}
/**
* Checks if the any contains a value of the idl type short.
*
* @param object the object to check.
* @return true when the any contains a short, false otherwise.
*/
public static boolean isShort(Object object){
return containsType(TypeClass.SHORT, object);
}
/**
* Checks if the any contains a value of the idl type long
* (which maps to a java-int).
*
* @param object the object to check.
* @return true when the any contains a int, false otherwise.
*/
public static boolean isInt(Object object){
return containsType(TypeClass.LONG, object);
}
/**
* Checks if the any contains a value of the idl type hyper
* (which maps to a java-long).
*
* @param object the object to check.
* @return true when the any contains a long, false otherwise.
*/
public static boolean isLong(Object object){
return containsType(TypeClass.HYPER, object);
}
/**
* Checks if the any contains a value of the idl type float.
*
* @param object the object to check.
* @return true when the any contains a float, false otherwise.
*/
public static boolean isFloat(Object object){
return containsType(TypeClass.FLOAT, object);
}
/**
* Checks if the any contains a value of the idl type double.
*
* @param object the object to check.
* @return true when the any contains a double, false otherwise.
*/
public static boolean isDouble(Object object){
return containsType(TypeClass.DOUBLE, object);
}
/**
* Checks if the any contains a value of the idl type string.
*
* @param object the object to check.
* @return true when the any contains a string, false otherwise.
*/
public static boolean isString(Object object){
return containsType(TypeClass.STRING, object);
}
/**
* Checks if the any contains a value of the idl type enum.
*
* @param object the object to check.
* @return true if the any contains an enum, false otherwise.
*/
public static boolean isEnum(Object object)
{
return containsType(TypeClass.ENUM, object);
}
/**
* Checks if the any contains a value of the idl type type.
*
* @param object the object to check.
* @return true when the any contains a type, false otherwise.
*/
public static boolean isType(Object object){
return containsType(TypeClass.TYPE, object);
}
/**
* Checks if the any contains an interface, struct, exception, sequence or enum.
*
* If object is an any with an interface type, then true is also
* returned if the any contains a null reference. This is because interfaces
* are allowed to have a null value contrary to other UNO types.
*
* @param object the object to check.
* @return true if the any contains an object.
*/
public static boolean isObject(Object object)
{
int tc = getType(object).getTypeClass().getValue();
return (TypeClass.INTERFACE_value == tc ||
TypeClass.STRUCT_value == tc ||
TypeClass.EXCEPTION_value == tc ||
TypeClass.SEQUENCE_value == tc ||
TypeClass.ENUM_value == tc);
}
/**
* Checks if the any contains UNO idl sequence value (meaning a java array
* containing elements which are values of UNO idl types).
*
* @param object the object to check.
* @return true when the any contains an object which implements interfaces,
* false otherwise.
*/
public static boolean isArray(Object object){
return containsType(TypeClass.SEQUENCE, object);
}
/**
* Converts a Char object or an Any object containing a Char object into a
* simple char.
*
* @param object the object to convert.
* @return the char contained within the object.
* @throws com.sun.star.lang.IllegalArgumentException in case no char is
* contained within object.
*
* @see #isChar
*/
public static char toChar(Object object) throws com.sun.star.lang.IllegalArgumentException{
Character ret= (Character)convertSimple(TypeClass.CHAR, null, object);
return ret.charValue();
}
/**
* Converts a Boolean object or an Any object containing a Boolean object
* into a simple boolean.
*
* @param object the object to convert.
* @return the boolean contained within the object
* @throws com.sun.star.lang.IllegalArgumentException in case no boolean is
* contained within object
*
* @see #isBoolean
*/
public static boolean toBoolean(Object object) throws com.sun.star.lang.IllegalArgumentException{
Boolean ret= (Boolean)convertSimple(TypeClass.BOOLEAN, null, object);
return ret.booleanValue();
}
/**
* Converts a Byte object or an Any object containing a Byte object into a
* simple byte.
*
* @param object the object to convert.
* @return the boolean contained within the object.
* @throws com.sun.star.lang.IllegalArgumentException in case no byte is
* contained within object.
*
* @see #isBoolean
*/
public static byte toByte(Object object) throws com.sun.star.lang.IllegalArgumentException{
Byte ret= (Byte)convertSimple(TypeClass.BYTE, null, object);
return ret.byteValue();
}
/**
* Converts a number object into a simple short and allows widening conversions.
*
* Allowed argument types are Byte, Short or Any containing these types.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no short or
* byte is contained within object.
*
* @return the short contained within the object.
*/
public static short toShort(Object object) throws com.sun.star.lang.IllegalArgumentException{
Short ret= (Short)convertSimple(TypeClass.SHORT, null, object);
return ret.shortValue();
}
/**
* Converts a number object into an idl unsigned short and allows widening
* conversions.
*
* Allowed argument types are Anies containing idl unsigned short values.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no idl unsigned
* short is contained within Any.
*
* @return an (unsigned) short.
*/
public static short toUnsignedShort(Object object)
throws com.sun.star.lang.IllegalArgumentException
{
Short ret= (Short)convertSimple(TypeClass.UNSIGNED_SHORT, null, object);
return ret.shortValue();
}
/**
* Converts a number object into a simple int and allows widening conversions.
*
* Allowed argument types are Byte, Short, Integer or Any containing these
* types.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no short, byte
* or int is contained within object.
*
* @return the int contained within the object.
*/
public static int toInt(Object object) throws com.sun.star.lang.IllegalArgumentException{
Integer ret= (Integer) convertSimple( TypeClass.LONG, null, object);
return ret.intValue();
}
/**
* Converts a number object into an idl unsigned long and allows widening
* conversions.
*
* Allowed argument types are Anies containing idl unsigned short or
* unsigned long values.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no idl unsigned
* short nor unsigned long is contained within Any.
*
* @return an (unsigned) int.
*/
public static int toUnsignedInt(Object object)
throws com.sun.star.lang.IllegalArgumentException
{
Integer ret = (Integer)convertSimple(TypeClass.UNSIGNED_LONG, null, object);
return ret.intValue();
}
/**
* Converts a number object into a simple long and allows widening conversions.
*
* Allowed argument types are Byte, Short, Integer, Long or Any containing
* these types.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no short, byte,
* int or long is contained within object.
*
* @return the long contained within the object.
*/
public static long toLong(Object object) throws com.sun.star.lang.IllegalArgumentException{
Long ret= (Long) convertSimple( TypeClass.HYPER, null, object);
return ret.longValue();
}
/**
* Converts a number object into an idl unsigned hyper and allows widening
* conversions.
*
* Allowed argument types are Anies containing idl unsigned short, unsigned
* long or unsigned hyper values.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no idl unsigned
* short, nor unsigned long nor unsigned hyper is contained within object.
*
* @return an (unsigned) long.
*/
public static long toUnsignedLong(Object object)
throws com.sun.star.lang.IllegalArgumentException
{
Long ret = (Long)convertSimple(TypeClass.UNSIGNED_HYPER, null, object);
return ret.longValue();
}
/**
* Converts a number object into a simple float and allows widening conversions.
*
* Allowed argument types are Byte, Short, Float or Any containing these
* types.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no byte, short
* or float is contained within object.
*
* @return the float contained within the object.
*/
public static float toFloat(Object object) throws com.sun.star.lang.IllegalArgumentException{
Float ret= (Float) convertSimple( TypeClass.FLOAT,null, object);
return ret.floatValue();
}
/**
* Converts a number object into a simple double and allows widening conversions.
*
* Allowed argument types are Byte, Short, Int, Float, Double or Any
* containing these types.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no byte, short,
* int, float or double is contained within object.
*
* @return the double contained within the object.
*/
public static double toDouble(Object object) throws com.sun.star.lang.IllegalArgumentException {
Double ret= (Double) convertSimple( TypeClass.DOUBLE, null, object);
return ret.doubleValue();
}
/**
* Converts a string or an any containing a string into a string.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no string is
* contained within object.
*
* @return the string contained within the object.
*/
public static String toString(Object object) throws com.sun.star.lang.IllegalArgumentException {
return (String) convertSimple( TypeClass.STRING, null, object);
}
/**
* Converts a Type or an any containing a Type into a Type.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no type is
* contained within object.
*
* @return the type contained within the object.
*/
public static Type toType(Object object) throws com.sun.star.lang.IllegalArgumentException {
return (Type) convertSimple( TypeClass.TYPE, null, object);
}
/**
* Converts a UNO object (struct, exception, sequence, enum or interface) or
* an Any containing these types into a UNO object of a specified destination
* type.
*
* For interfaces, the argument object is queried for the interface
* specified by the type argument.
*
* That query (UnoRuntime.queryInterface) might return null, if the interface
* is not implemented or a null-ref or a VOID any is given.
*
* @param type type of the returned value.
* @param object the object that is to be converted.
* @throws com.sun.star.lang.IllegalArgumentException in case conversion is
* not possible.
*
* @return destination object.
*/
public static Object toObject(Type type, Object object)
throws com.sun.star.lang.IllegalArgumentException
{
return convertSimple( type.getTypeClass(), type, object );
}
/**
* Converts a UNO object (struct, exception, sequence, enum or interface) or
* an Any containing these types into a UNO object of a specified destination
* type.
*
* For interfaces, the argument object is queried for the interface
* specified by the type argument. That query (UnoRuntime.queryInterface)
* might return null, if the interface is not implemented or a null-ref or a
* VOID any is given.
*
* @param clazz class of the returned value.
* @param object the object that is to be converted.
* @throws com.sun.star.lang.IllegalArgumentException in case conversion is
* not possible.
*
* @return destination object.
*/
public static Object toObject(Class clazz, Object object)
throws com.sun.star.lang.IllegalArgumentException
{
return toObject( new Type( clazz ), object );
}
/**
* Converts an array or an any containing an array into an array.
*
* @param object the object to convert.
* @throws com.sun.star.lang.IllegalArgumentException in case no array is
* contained within object.
*
* @return the array contained within the object.
*/
public static Object toArray( Object object) throws com.sun.star.lang.IllegalArgumentException {
return convertSimple( TypeClass.SEQUENCE, null, object);
}
/**
* Examines the argument object if is correspond to the type in
* argument what.
*
* object is either matched directly against the type or if it is
* an any then the contained object is matched against the type.
*/
private static boolean containsType( TypeClass what, Object object){
return (getType(object).getTypeClass().getValue() == what.getValue());
}
private static final Type m_XInterface_type = new Type( XInterface.class );
private static Object convertSimple( TypeClass destTClass, Type destType, Object object_ )
throws com.sun.star.lang.IllegalArgumentException
{
Object object;
Type type;
if (object_ instanceof Any) {
// unbox
Any a = (Any)object_;
object = a.getObject();
type = a.getType();
// nested any
if (TypeClass.ANY_value == type.getTypeClass().getValue())
return convertSimple( destTClass, destType, object );
} else {
object = object_;
type = (null == object ? m_XInterface_type : new Type( object.getClass() ));
}
int tc = type.getTypeClass().getValue();
int dest_tc = destTClass.getValue();
if (null == object) {
// special for interfaces
if (TypeClass.INTERFACE_value == tc && dest_tc == tc)
return null;
} else {
switch (dest_tc) {
case TypeClass.CHAR_value:
if (tc == TypeClass.CHAR_value)
return object;
break;
case TypeClass.BOOLEAN_value:
if (tc == TypeClass.BOOLEAN_value)
return object;
break;
case TypeClass.BYTE_value:
if (tc == TypeClass.BYTE_value)
return object;
break;
case TypeClass.SHORT_value:
switch (tc) {
case TypeClass.BYTE_value:
return Short.valueOf( ((Byte)object).byteValue() );
case TypeClass.SHORT_value:
return object;
}
break;
case TypeClass.UNSIGNED_SHORT_value:
switch (tc) {
case TypeClass.UNSIGNED_SHORT_value:
return object;
}
break;
case TypeClass.LONG_value:
switch (tc) {
case TypeClass.BYTE_value:
return Integer.valueOf( ((Byte)object).byteValue() );
case TypeClass.SHORT_value:
case TypeClass.UNSIGNED_SHORT_value:
return Integer.valueOf( ((Short)object).shortValue() );
case TypeClass.LONG_value:
return object;
}
break;
case TypeClass.UNSIGNED_LONG_value:
switch (tc) {
case TypeClass.UNSIGNED_SHORT_value:
return Integer.valueOf( ((Short)object).shortValue() );
case TypeClass.UNSIGNED_LONG_value:
return object;
}
break;
case TypeClass.HYPER_value:
switch (tc) {
case TypeClass.BYTE_value:
return Long.valueOf( ((Byte)object).byteValue() );
case TypeClass.SHORT_value:
case TypeClass.UNSIGNED_SHORT_value:
return Long.valueOf( ((Short)object).shortValue() );
case TypeClass.LONG_value:
case TypeClass.UNSIGNED_LONG_value:
return Long.valueOf( ((Integer)object).intValue() );
case TypeClass.HYPER_value:
return object;
}
break;
case TypeClass.UNSIGNED_HYPER_value:
switch (tc) {
case TypeClass.UNSIGNED_SHORT_value:
return Long.valueOf( ((Short)object).shortValue() );
case TypeClass.UNSIGNED_LONG_value:
return Long.valueOf( ((Integer)object).intValue() );
case TypeClass.UNSIGNED_HYPER_value:
return object;
}
break;
case TypeClass.FLOAT_value:
switch (tc) {
case TypeClass.BYTE_value:
return Float.valueOf( ((Byte)object).byteValue() );
case TypeClass.SHORT_value:
return Float.valueOf( ((Short)object).shortValue() );
case TypeClass.FLOAT_value:
return object;
}
break;
case TypeClass.DOUBLE_value:
switch (tc) {
case TypeClass.BYTE_value:
return Double.valueOf( ((Byte)object).byteValue() );
case TypeClass.SHORT_value:
return Double.valueOf( ((Short)object).shortValue() );
case TypeClass.LONG_value:
return Double.valueOf( ((Integer)object).intValue() );
case TypeClass.FLOAT_value:
return Double.valueOf( ((Float)object).floatValue() );
case TypeClass.DOUBLE_value:
return object;
}
break;
case TypeClass.ENUM_value:
if (tc == TypeClass.ENUM_value &&
(null == destType || destType.equals( type ) /* optional destType */))
{
return object;
}
break;
case TypeClass.STRING_value:
if (tc == TypeClass.STRING_value)
return object;
break;
case TypeClass.TYPE_value:
if (tc == TypeClass.TYPE_value)
return object;
break;
case TypeClass.INTERFACE_value:
// Because object is a class, not an interface, it is
// controversial what kind of Type "new Type(object.class)"
// above should return (UNKNOWN or INTERFACE), so that we should
// not check here for "tc == TypeClass.INTERFACE_value".
// Instead, we check whether object (indirectly) derives from
// XInterface:
if (object instanceof XInterface)
return UnoRuntime.queryInterface( destType, object );
break;
case TypeClass.STRUCT_value:
case TypeClass.EXCEPTION_value:
if (destType.isSupertypeOf(type)) {
return object;
}
break;
case TypeClass.SEQUENCE_value:
if (tc == TypeClass.SEQUENCE_value &&
(null == destType || destType.equals( type ) /* optional destType */))
{
return object;
}
break;
}
}
throw new com.sun.star.lang.IllegalArgumentException(
"The Argument did not hold the proper type");
}
}
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