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/*
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 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.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
/**
* 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;
}
}
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