/*******************************************************************************
 *  Copyright (c) 2010 Association for Decentralized Information Management in
 *  Industry THTH ry.
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  which accompanies this distribution, and is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 *  Contributors:
 *      VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.databoard.binding.impl;

import org.simantics.databoard.binding.ByteBinding;
import org.simantics.databoard.binding.error.BindingException;
import org.simantics.databoard.binding.error.UnsupportedOperationException;
import org.simantics.databoard.type.ByteType;

/**
 * Binds ByteType to java.lang.Byte-class
 *
 * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
 */
public class ByteBindingDefault extends ByteBinding {
	
	public ByteBindingDefault(ByteType type) {
		super(type);
	}
	
	public Object create(byte value) {
		return Byte.valueOf(value);
	}
	
	public Object create(Byte value) {
		return value;
	}
	
	@Override
	public Object create(Number value) 
	{
		if (value.getClass()==Byte.class) return value;
		return Byte.valueOf( value.byteValue() );
	}	
	
	@Override
	public Object create(String value) throws BindingException {
		try {
			return Byte.parseByte(value);
		} catch (java.lang.NumberFormatException e) {
			throw new BindingException( e );
		}
	}
		
	public Byte getValue(Object obj)
	throws BindingException
	{
		if (obj.getClass()!=Byte.class) throw new BindingException("Unexpected class "+obj.getClass().getSimpleName()+", Byte expected");
		return ((Byte)obj);
	}
	
	public byte getValue_(Object obj)
	throws BindingException
	{
		if (obj.getClass()!=Byte.class) throw new BindingException("Unexpected class "+obj.getClass().getSimpleName()+", Byte expected");
		return ((Byte)obj);
	}

	@Override
	public void setValue(Object obj, Number value) throws BindingException {
		throw new UnsupportedOperationException("Cannot change the value of immutable java.lang.Byte");
	}
		
	public void setValue(Object obj, byte value) throws BindingException {
		throw new UnsupportedOperationException("Cannot change the value of immutable java.lang.Byte");
	}
	
	@Override
	public boolean isInstance(Object obj) {
		return obj instanceof Byte;
	}
	
	@Override
	public boolean isImmutable() {
		return true;
	}

    @Override
    public int compare(Object o1, Object o2)
    {
    	Byte d1 = (Byte) o1;
    	Byte d2 = (Byte) o2;
    	int d = d1-d2;
    	return d == 0 ? 0 : (d<0?-1:1);
    }
	

}