EnumTypeFormatter.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2024 Link.it srl (https://link.it).
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openspcoop2.generic_project.expression.impl.formatter;

import java.lang.reflect.Method;

import org.openspcoop2.generic_project.beans.IEnumeration;
import org.openspcoop2.generic_project.exception.ExpressionException;
import org.openspcoop2.utils.TipiDatabase;

/**
 * EnumTypeFormatter
 * 
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class EnumTypeFormatter implements ITypeFormatter<IEnumeration> {
	
	@Override
	public String toString(IEnumeration o) throws ExpressionException {
		if(o == null){
			throw new ExpressionException("Object parameter is null");
		}
		return o.toString();
	}
	
	@Override
	public String toSQLString(IEnumeration o) throws ExpressionException {
		return this.toSQLString(o, TipiDatabase.DEFAULT);
	}
	
	@Override
	public String toSQLString(IEnumeration o, TipiDatabase databaseType) throws ExpressionException {
		return "'"+o.toString()+"'";
	}

	@Override
	public IEnumeration toObject(String o,Class<?> c) throws ExpressionException {
		if(o == null){
			throw new ExpressionException("Object parameter is null");
		}
		try{
			Method m = c.getMethod("toEnumConstantFromString", String.class);
			IEnumeration tmp = (IEnumeration) m.invoke(null, o);
			if(tmp!=null){
				return tmp;
			}else{
				throw new Exception("Enum value is not correct: "+o);
			}
			
		}catch(Exception e){
			throw new ExpressionException("Conversion failure: "+e.getMessage(),e);
		}
	}

	@Override
	public Class<IEnumeration> getTypeSupported() {
		return IEnumeration.class;
	}

}