PropertyFilterCore.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.utils.serialization;

import org.openspcoop2.utils.checksum.ChecksumAdler;
import org.openspcoop2.utils.checksum.ChecksumCRC;

/** 
 * Contiene classe per effettuare un filtro JSON
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */

public class PropertyFilterCore {

    private IDBuilder idBuilder = null;
    private Filter filter = null;
    private ISerializer serializer = null;
    
    public IDBuilder getIdBuilder() {
        return this.idBuilder;
    }
    public void setIdBuilder(IDBuilder idBuilder) {
        this.idBuilder = idBuilder;
    }
    public Filter getFilter() {
        return this.filter;
    }
    public void setFilter(Filter filter) {
        this.filter = filter;
    }
    public ISerializer getSerializer() {
        return this.serializer;
    }
    public void setSerializer(ISerializer serializer) {
        this.serializer = serializer;
    }
    public PropertyFilterCore(Filter filter,IDBuilder idBuilder,ISerializer serializer){
        this.idBuilder = idBuilder;
        this.filter = filter;
        this.serializer = serializer;
    }
    public PropertyFilterCore(Filter filter,ISerializer serializer){
        this.filter = filter;
        this.serializer = serializer;
    }
    
    
    protected void applicaFiltro(Object source, String name, Object value, Class<?> classFilter){
        try{
            //System.out.println("EXCLUDE["+name+"] ID["+this.idBuilder.toID(source,name)+"]");
            FilteredObject oggettoFiltrato = new FilteredObject();
            
            // Identificatore unico risorsa
            String id = null;
            try{
                if(this.idBuilder==null) {
                    throw new Exception("IDBuilder not initialized");
                }
                id = this.idBuilder.toID(source,name);
            }catch(Exception e){
                // id non esistente per l'oggetto source
                return;
            }
            if(this.filter.existsFilteredObject(id)){
                // La libreria di serializzazione invoca piu' volte il solito oggetto
                return;
            }
            if(this.idBuilder!=null)
                oggettoFiltrato.setId(id);
            
            // Checksum risorsa filtrata
            long checksum = -1;
            byte[] byteOggetto = null;
            if(value instanceof byte[]){
                byteOggetto = (byte[])value;
            }else{
                // Uso serializzazione
                 byteOggetto = this.serializer.getObject(value).getBytes();
            }
            if(FilterChecksumTypes.ADLER.toString().equals(this.filter.getFilterChecksumType().toString())){
                checksum = ChecksumAdler.checksumAdler32(byteOggetto);
            }else{
                checksum = ChecksumCRC.checksumCRC32(byteOggetto);
            }
            oggettoFiltrato.setChecksum(checksum);
            
            // ClassType
            oggettoFiltrato.setClassType(classFilter);
            
            this.filter.addFilteredObject(oggettoFiltrato);
            
        }catch(Exception e){
            e.printStackTrace(System.out);
        }
    }
}