ObjectFormatter.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 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.util.ArrayList;
import java.util.Iterator;
import java.util.List;

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

/**
 * ObjectFormatter
 * 
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class ObjectFormatter implements IObjectFormatter {

    private List<ITypeFormatter<?>> typesFormatter = new ArrayList<ITypeFormatter<?>>();
        
    public ObjectFormatter() throws ExpressionException{
        try{
            // default
            this.typesFormatter.add(new BooleanTypeFormatter());
            this.typesFormatter.add(new CalendarTypeFormatter());
            this.typesFormatter.add(new DateTypeFormatter());
            this.typesFormatter.add(new TimestampTypeFormatter());
            this.typesFormatter.add(new CharacterTypeFormatter());
            this.typesFormatter.add(new StringTypeFormatter());
            this.typesFormatter.add(new ByteTypeFormatter());
            this.typesFormatter.add(new ShortTypeFormatter());
            this.typesFormatter.add(new IntegerTypeFormatter());
            this.typesFormatter.add(new LongTypeFormatter());
            this.typesFormatter.add(new DoubleTypeFormatter());
            this.typesFormatter.add(new FloatTypeFormatter());
            this.typesFormatter.add(new EnumTypeFormatter());
            this.typesFormatter.add(new URITypeFormatter());
            this.typesFormatter.add(new ByteArrayTypeFormatter());
        }catch(Exception e){
            throw new ExpressionException(e);
        }
    }
    public ObjectFormatter(ITypeFormatter<?> ... types){
        for (int i = 0; i < types.length; i++) {
            this.typesFormatter.add(types[i]);
        }
    }
    
    @Override
    public void isSupported(Object o) throws ExpressionException{
        boolean supported = false;
        for (Iterator<ITypeFormatter<?>> iterator = this.typesFormatter.iterator(); iterator.hasNext();) {
            ITypeFormatter<?> type = iterator.next();
            try{
                o.getClass().asSubclass(type.getTypeSupported());
                supported = true;
                break;
            }catch(Exception e){}
        }
        if(!supported){
            throwTypeUnsupported(o);
        }
    }
    
    @Override
    @SuppressWarnings("unchecked")
    public String toString(Object o) throws ExpressionException {
        for (Iterator<ITypeFormatter<?>> iterator = this.typesFormatter.iterator(); iterator.hasNext();) {
            @SuppressWarnings("rawtypes")
            ITypeFormatter type = iterator.next();
            boolean isType = false;
            try{
                o.getClass().asSubclass(type.getTypeSupported());
                isType = true;
            }catch(Exception e){isType=false;}
            if(isType){
                return type.toString(o);
            }
        }
        throwTypeUnsupported(o);
        return null;
    }
    
    @Override
    public String toSQLString(Object o) throws ExpressionException {
        return this.toSQLString(o, TipiDatabase.DEFAULT);
    }
    @Override
    @SuppressWarnings("unchecked")
    public String toSQLString(Object o, TipiDatabase databaseType) throws ExpressionException {
        for (Iterator<ITypeFormatter<?>> iterator = this.typesFormatter.iterator(); iterator.hasNext();) {
            @SuppressWarnings("rawtypes")
            ITypeFormatter type = iterator.next();
            boolean isType = false;
            try{
                o.getClass().asSubclass(type.getTypeSupported());
                isType = true;
            }catch(Exception e){isType=false;}
            if(isType){
                return type.toSQLString(o, databaseType);
            }
        }
        throwTypeUnsupported(o);
        return null;
    }
    
    @Override
    @SuppressWarnings("unchecked")
    public Object toObject(String o,Class<?> c) throws ExpressionException {
        for (Iterator<ITypeFormatter<?>> iterator = this.typesFormatter.iterator(); iterator.hasNext();) {
            @SuppressWarnings("rawtypes")
            ITypeFormatter type = iterator.next();
            boolean isType = false;
            try{
                c.asSubclass(type.getTypeSupported());
                isType = true;
            }catch(Exception e){isType=false;}
            if(isType){
                type.toObject(o,c);
            }
        }
        throwTypeUnsupported(c);
        return null;
    }
    
    private void throwTypeUnsupported(Object o) throws ExpressionException {
        StringBuilder bf = new StringBuilder();
        for (Iterator<ITypeFormatter<?>> iterator = this.typesFormatter.iterator(); iterator.hasNext();) {
            ITypeFormatter<?> type = iterator.next();
            if(bf.length()>0){
                bf.append(" , ");
            }
            bf.append(type.getTypeSupported());
        }
        throw new ExpressionException("Unsupported ["+o.getClass().getName()+"] type. Supported types are: "+bf.toString());
    }
}