/******************************************************************************

  * FiltersChangedDom.java - XML Filters that changed for PicMan's Editors

  * 

  * PicMan - The BuckoSoft Picture Manager in Java

  * Copyright(c) 2009 - Dick Balaska

  * 

  */

 package com.buckosoft.PicMan.dom;

 import java.util.Iterator;

 import java.util.List;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.dom4j.Document;

 import org.dom4j.DocumentHelper;

 import org.dom4j.Element;

 import com.buckosoft.PicMan.business.PicManFacade;

 import com.buckosoft.PicMan.db.DatabaseFacade;

 import com.buckosoft.PicMan.domain.Filter;

 import com.buckosoft.PicMan.domain.Set;

 /** Given two filters, return the differences as a DOM.

  * @author Dick Balaska

  * @since 2009/08/04

  * @see <a href="http://cvs.buckosoft.com/Projects/java/PicMan/PicMan/src/com/buckosoft/PicMan/dom/FiltersChangedDom.java">FiltersChangedDom.java</a>

  */

 public class FiltersChangedDom {

         private static boolean DEBUG = false;

         private static boolean DEBUGMETASETS = false;

         protected static Log logger = LogFactory.getLog("FiltersChangedDom");

         /** Given two filters, return the differences as a DOM.

          * @param pmf The PicMan Facade

          * @param filterO The old filter

          * @param filterN The new Filter

          * @return the DOM

          */

         static public Document createDocument(PicManFacade pmf, Filter filterO, Filter filterN) {

                 DatabaseFacade dbf = pmf.getDB();

                 int[] sizeArray = dbf.getSizeArray();

                 Document document = DocumentHelper.createDocument();

                 Element root = document.addElement("PicFilter");

                 root.addElement("picName").addText(filterO.getPicName());

                 Element filters = DocumentHelper.createElement("Filters");

                 root.add(filters);

                 List<Set> sets = pmf.getDB().getSets();

                 Iterator<Set> iter = sets.iterator();

                 int                i;

                 while (iter.hasNext()) {

                         Set set = iter.next();

                         if (!set.isMetaSet())

                                 continue;

                         if (DEBUGMETASETS) {

                                 if (set.getName().equals("DickB"))

                                         logger.info("DickB");

                         }

                         boolean[] reto = dbf.getMetaSetFilter().isFilterInSet(dbf.getMetaSet(set.getSid()), filterO);

                         boolean[] retn = dbf.getMetaSetFilter().isFilterInSet(dbf.getMetaSet(set.getSid()), filterN);

                         if (DEBUGMETASETS) {

                                 String        s = "";

                                 for (i=0; i<sizeArray.length; i++)

                                         s += reto[i] ? "T" : "F";

                                 logger.info("reto=" + s + "  - " + set.getName());

                                 s = "";

                                 for (i=0; i<sizeArray.length; i++)

                                         s += retn[i] ? "T" : "F";

                                 logger.info("retn=" + s + "  - " + set.getName());

                         }

                         for (i=0; i<sizeArray.length; i++) {

                                 if (reto[i] ^ retn[i]) {

                                         if (DEBUG)

                                                 logger.info("set updated: " + set.getName() + " ro=" + reto[i] + " rn=" + retn[i]);

                                         Element ele = DocumentHelper.createElement("Filter");

                                         ele.addElement("setName").addText(set.getName() + "_" + sizeArray[i]);

                                         ele.addElement("value").addText(retn[i] ? "T" : "F");

                                         filters.add(ele);

                                 }

                         }

                 }

                 return document;

         }

 }