Java tutorial
/* * The MIT License * * Copyright 2014 Alejandro Alberto Yescas Benitez. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package XMLWriter; import DataWeb.User; import java.io.FileOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.jdom2.Document; import org.jdom2.Element; import org.jdom2.JDOMException; import org.jdom2.Namespace; import org.jdom2.input.SAXBuilder; import org.jdom2.input.sax.XMLReaders; import org.jdom2.output.Format; import org.jdom2.output.XMLOutputter; /** * * @author Alejandro Alberto Yescas Benitez */ public class WriteUsersXML { private static final Namespace ns = Namespace.getNamespace("nsUsers", "http://www.w3.org/users"); private static final SAXBuilder builder = new SAXBuilder(XMLReaders.XSDVALIDATING);; public static boolean addUser(User us, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); Element user = new Element("user", ns); user.setAttribute("id", us.getID()); for (Element e : rootNode.getChildren("user", ns)) if (e.getAttributeValue("id").equals(us.getID())) return false; Element usuario = new Element("usuario", ns); usuario.setText(us.getUsuario()); Element password = new Element("password", ns); password.setText(us.getPassword()); Element nombres = new Element("nombres", ns); nombres.setText(us.getNombres()); Element apPat = new Element("apPat", ns); apPat.setText(us.getApPaterno()); Element apMat = new Element("apMat", ns); apMat.setText(us.getApMaterno()); Element category = new Element("category", ns); category.setText(us.getCategory()); List<Element> idCursos = new ArrayList<Element>(); for (String id : us.getIDCursos()) { Element idCurso = new Element("idCurso", ns); idCurso.setText(id); idCursos.add(idCurso); } user.addContent(usuario); user.addContent(password); user.addContent(nombres); user.addContent(apPat); user.addContent(apMat); user.addContent(category); user.addContent(idCursos); rootNode.addContent(user); Format form = Format.getPrettyFormat().clone(); form.setTextMode(Format.TextMode.TRIM_FULL_WHITE); XMLOutputter xmlOut = new XMLOutputter(form); FileOutputStream file = new FileOutputStream(xmlSource); xmlOut.output(doc, file); file.close(); } catch (IOException io) { System.out.println(io.getMessage()); } catch (JDOMException jdomex) { System.out.println(jdomex.getMessage()); } return true; } public static boolean changeName(User usuario, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); boolean find = false; for (Element e : rootNode.getChildren("user", ns)) if (e.getAttributeValue("id").equals(usuario.getID())) { e.getChild("nombres", ns).setText(usuario.getNombres()); e.getChild("apPat", ns).setText(usuario.getApPaterno()); e.getChild("apMat", ns).setText(usuario.getApMaterno()); find = true; break; } if (!find) return false; Format form = Format.getPrettyFormat().clone(); form.setTextMode(Format.TextMode.TRIM_FULL_WHITE); XMLOutputter xmlOut = new XMLOutputter(form); FileOutputStream file = new FileOutputStream(xmlSource); xmlOut.output(doc, file); file.close(); } catch (IOException io) { System.out.println(io.getMessage()); } catch (JDOMException jdomex) { System.out.println(jdomex.getMessage()); } return true; } public static boolean addCourse(String idUser, String idCourse, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); boolean find = false; for (Element e : rootNode.getChildren("user", ns)) if (e.getAttributeValue("id").equals(idUser)) { find = true; Element idCu = new Element("idCurso", ns); idCu.setText(idCourse); e.setContent(e.indexOf(e.getChild("idCurso", ns)), idCu); break; } if (!find) return false; Format form = Format.getPrettyFormat().clone(); form.setTextMode(Format.TextMode.TRIM_FULL_WHITE); XMLOutputter xmlOut = new XMLOutputter(form); FileOutputStream file = new FileOutputStream(xmlSource); xmlOut.output(doc, file); file.close(); } catch (IOException io) { System.out.println(io.getMessage()); } catch (JDOMException jdomex) { System.out.println(jdomex.getMessage()); } return true; } public static boolean removeCourse(String idUser, String idCourse, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); boolean find = false; for (Element e : rootNode.getChildren("user", ns)) if (e.getAttributeValue("id").equals(idUser)) for (Element c : e.getChildren("idCurso", ns)) if (c.getTextTrim().equals(idCourse)) { find = e.removeContent(c); break; } if (!find) return false; Format form = Format.getPrettyFormat().clone(); form.setTextMode(Format.TextMode.TRIM_FULL_WHITE); XMLOutputter xmlOut = new XMLOutputter(form); FileOutputStream file = new FileOutputStream(xmlSource); xmlOut.output(doc, file); file.close(); } catch (IOException io) { System.out.println(io.getMessage()); } catch (JDOMException jdomex) { System.out.println(jdomex.getMessage()); } return true; } }