/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2001 Michael Powers

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library 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
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see http://www.gnu.org
*/
package net.wotonomy.control;

import java.lang.reflect.Method;

import net.wotonomy.foundation.NSDictionary;
import net.wotonomy.foundation.NSKeyValueCoding;

/**
 * Creates objects from dictionaries that were created with EOKeyValueArchiver.
 * 
 * @author michael@mpowers.net
 * @author $Author: cgruber $
 * @version $Revision: 894 $
 */
public class EOKeyValueUnarchiver {

	NSDictionary dict;
	Object _delegate;
	protected static final Class[] METHOD_ARGS = new Class[] { EOKeyValueUnarchiver.class };

	public EOKeyValueUnarchiver(NSDictionary archive) {
		super();
		dict = archive;
	}

	public void awakeObjects() {
	}

	public boolean decodeBoolForKey(String key) {
		Object x = dict.objectForKey(key);
		if (x == null)
			return false;
		return (x.equals("true") || x.equals("YES") || x.equals("Y"));
	}

	public int decodeIntForKey(String key) {
		Object x = dict.objectForKey(key);
		if (x == null)
			return 0;
		if (x instanceof Number)
			return ((Number) x).intValue();
		try {
			int i = Integer.parseInt(x.toString());
			return i;
		} catch (NumberFormatException ex) {
			return 0;
		}
	}

	public Object decodeObjectForKey(String key) {
		Object x = dict.objectForKey(key);
		if (x == null)
			return null;
		if (x instanceof NSDictionary) {
			NSDictionary d = (NSDictionary) x;
			if (d.objectForKey("class") != null) {
				String cname = d.objectForKey("class").toString();
				Class _class = null;
				if (cname.equals("NSNumber")) {
					if (d.objectForKey("value") != null)
						return new Long(d.objectForKey("value").toString());
				} else if (cname.equals("NSDecimalNumber")) {
					if (d.objectForKey("value") != null)
						return new java.math.BigDecimal(d.objectForKey("value").toString());
				} else if (cname.equals("NSString")) {
					if (d.objectForKey("value") != null)
						return d.objectForKey("value").toString();
				} else if (cname.equals("EONull")) {
					return NSKeyValueCoding.NullValue;
				} else if (cname.equals("EOFetchSpecification")) {
					_class = EOFetchSpecification.class;
				} else if (cname.equals("EOKeyValueQualifier")) {
					_class = EOKeyValueQualifier.class;
				} else if (cname.equals("EONotQualifier")) {
					_class = EONotQualifier.class;
				} else if (cname.equals("EOAndQualifier")) {
					_class = EOAndQualifier.class;
				} else if (cname.equals("EOOrQualifier")) {
					_class = EOOrQualifier.class;
				} else if (cname.equals("EOSortOrdering")) {
					_class = EOSortOrdering.class;
				} else if (cname.indexOf(".") < 0) { // Load a class without package
					try {
						_class = Class.forName("net.wotonomy.control." + cname);
					} catch (ClassNotFoundException ex) {
					}
					// search for the class in access
					if (_class == null) {
						try {
							_class = Class.forName("net.wotonomy.access." + cname);
						} catch (ClassNotFoundException ex) {
						}
					}
				} else {
					try {
						_class = Class.forName(cname);
					} catch (ClassNotFoundException ex) {
					}
				}
				if (_class == null)
					return x;
				try {
					Method met = _class.getMethod("decodeWithKeyValueUnarchiver", METHOD_ARGS);
					return met.invoke(null, new Object[] { new EOKeyValueUnarchiver(d) });
				} catch (Exception ex) {
					ex.printStackTrace();
					return x;
				}
			}
		}
		return x;
	}

	public Object decodeObjectReferenceForKey(String key) {
		return null;
	}

	public void ensureObjectAwake(Object obj) {
	}

	public void finishInitializationOfObjects() {
	}

	public Object parent() {
		return null;
	}

	public void setDelegate(Object del) {
		_delegate = del;
	}

	public Object delegate() {
		return _delegate;
	}

}
/*
 * $Log$ Revision 1.2 2006/02/16 16:47:14 cgruber Move some classes in to
 * "internal" packages and re-work imports, etc.
 *
 * Also use UnsupportedOperationExceptions where appropriate, instead of
 * WotonomyExceptions.
 *
 * Revision 1.1 2006/02/16 13:19:57 cgruber Check in all sources in
 * eclipse-friendly maven-enabled packages.
 *
 * Revision 1.2 2003/08/11 18:17:41 chochos decoding of objects now works
 * properly
 *
 */