/*
D-Bus Java Implementation
Copyright (c) 2005-2006 Matthew Johnson
This program is free software; you can redistribute it and/or modify it
under the terms of either the GNU Lesser General Public License Version 2 or the
Academic Free Licence Version 2.1.
Full licence texts are included in the COPYING file with this program.
*/
package org.freedesktop.dbus;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
/**
* This class is the super class of both Structs and Tuples
* and holds common methods.
*/
abstract class Container {
private static Map<Type, Type[]> typecache = new HashMap<Type, Type[]>();
static void putTypeCache(Type k, Type[] v) {
typecache.put(k, v);
}
static Type[] getTypeCache(Type k) {
return typecache.get(k);
}
private Object[] parameters = null;
public Container() {
}
private void setup() {
Field[] fs = getClass().getDeclaredFields();
Object[] args = new Object[fs.length];
int diff = 0;
for (Field f : fs) {
Position p = f.getAnnotation(Position.class);
if (null == p) {
diff++;
continue;
}
try {
args[p.value()] = f.get(this);
} catch (IllegalAccessException IAe) {
}
}
this.parameters = new Object[args.length - diff];
System.arraycopy(args, 0, parameters, 0, parameters.length);
}
/**
* Returns the struct contents in order.
*
* @throws DBusException If there is a problem doing this.
*/
public final Object[] getParameters() {
if (null != parameters) return parameters;
setup();
return parameters;
}
/**
* Returns this struct as a string.
*/
public final String toString() {
String s = getClass().getName() + "<";
if (null == parameters)
setup();
if (0 == parameters.length)
return s + ">";
for (Object o : parameters)
s += o + ", ";
return s.replaceAll(", $", ">");
}
public final boolean equals(Object other) {
if (other instanceof Container) {
Container that = (Container) other;
if (this.getClass().equals(that.getClass()))
return Arrays.equals(this.getParameters(), that.getParameters());
else return false;
} else return false;
}
}