Serializer.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.pdd.logger.traccia;

import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.util.Properties;

import org.openspcoop2.message.xml.MessageXMLUtils;
import org.openspcoop2.utils.json.JacksonJsonUtils;
import org.openspcoop2.utils.json.JacksonXmlUtils;
import org.openspcoop2.utils.service.beans.TransazioneBase;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

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

    private boolean prettyPrint = false;
    private String xml_namespace = "http://govway.org/traccia";
    private String xml_localName = "traccia";
    
    public Serializer() {       
    }
    public Serializer(Properties pConf) throws TracciaException {
        try {
            Field [] fields = Serializer.class.getDeclaredFields();
            for (Field field : fields) {
                String fieldName = field.getName();
                fieldName = fieldName.replace("_", ".");
                if(pConf.containsKey(fieldName)) {
                    String value = pConf.getProperty(fieldName);
                    String bCN = boolean.class.getName()+"";
                    if(bCN.equals(field.getType().getName())) {
                        field.set(this, "true".equalsIgnoreCase(value));
                    }else {
                        field.set(this, value);
                    }
                }
            }
        }catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
        
    }
    
    
    public byte[] toJsonByteArray(TransazioneBase transazione) throws TracciaException {
        try {
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            this.toJson(bout, transazione);
            bout.flush();
            bout.close();
            return bout.toByteArray();
        }
        catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
    }
    public String toJson(TransazioneBase transazione) throws TracciaException {
        try {
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            this.toJson(bout, transazione);
            bout.flush();
            bout.close();
            return bout.toString();
        }
        catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
    }
    public void toJson(OutputStream os , TransazioneBase transazione) throws TracciaException {
        try {
            JacksonJsonUtils jsonUtils = JacksonJsonUtils.getInstance(this.prettyPrint);
            jsonUtils.writeTo(transazione, os);
        }
        catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
    }
    
    public byte[] toXmlByteArray(TransazioneBase transazione) throws TracciaException {
        try {
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            this.toXml(bout, transazione);
            bout.flush();
            bout.close();
            return bout.toByteArray();
        }
        catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
    }
    public String toXml(TransazioneBase transazione) throws TracciaException {
        try {
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            this.toXml(bout, transazione);
            bout.flush();
            bout.close();
            return bout.toString();
        }
        catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
    }
    public void toXml(OutputStream os , TransazioneBase transazione) throws TracciaException {
        try {
            JacksonXmlUtils jacksonXmlUtils = JacksonXmlUtils.getInstance(this.prettyPrint);
            
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            jacksonXmlUtils.writeTo(transazione, bout);
            bout.flush();
            bout.close();
            
            MessageXMLUtils xmlUtils = MessageXMLUtils.DEFAULT;
            Element element = xmlUtils.newElement(bout.toByteArray());
            Document dom = xmlUtils.newDocument();
            Element elementNew = dom.createElementNS(this.xml_namespace, this.xml_localName);
            NodeList list = element.getChildNodes();
            for (int i = 0; i < list.getLength(); i++) {
                Node n = list.item(i);
                Node nAdopt = dom.adoptNode(n.cloneNode(true));
                elementNew.appendChild(nAdopt);
            }
            xmlUtils.writeTo(elementNew, os);
            
        }
        catch(Exception e) {
            throw new TracciaException(e.getMessage(),e);
        }
    }
    
    public void setPrettyPrint(boolean prettyPrint) {
        this.prettyPrint = prettyPrint;
    }
    public void setXml_namespace(String xml_namespace) {
        this.xml_namespace = xml_namespace;
    }
    public void setXml_localName(String xml_localName) {
        this.xml_localName = xml_localName;
    }
}