/* 
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
 package org.csstudio.platform.internal.simpledal.converters;

import java.util.HashMap;
import java.util.Map;

import org.csstudio.platform.model.pvs.ValueType;

public class ConverterUtil {
	private static Map<ValueType, IValueTypeConverter> converters;

	static {
		converters = new HashMap<ValueType, IValueTypeConverter>();
		converters.put(ValueType.DOUBLE, new DoubleConverter());
		converters.put(ValueType.LONG, new LongConverter());
		converters.put(ValueType.STRING, new StringConverter());
		converters.put(ValueType.OBJECT, new ObjectConverter());
		converters
				.put(ValueType.DOUBLE_SEQUENCE, new DoubleSequenceConverter());
		converters.put(ValueType.LONG_SEQUENCE, new LongSequenceConverter());
		converters
				.put(ValueType.STRING_SEQUENCE, new StringSequenceConverter());
		converters
				.put(ValueType.OBJECT_SEQUENCE, new ObjectSequenceConverter());
		converters
		.put(ValueType.ENUM, new ObjectConverter());

	}

	public static <E> E convert(Object value, ValueType valueType) {
		IValueTypeConverter converter = converters.get(valueType);
		assert converter != null : "Converter for type ["+valueType + "] is missing!";

		// converters do always return a value (even a fall back for a provided null value)
		E result = (E) converter.convert(value);
		
		return result;
	}
}