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.Course; import java.io.FileOutputStream; import java.io.IOException; 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 WriteCoursesXML { private static final Namespace ns = Namespace.getNamespace("nsCourses", "http://www.w3.org/courses"); private static final SAXBuilder builder = new SAXBuilder(XMLReaders.XSDVALIDATING);; public static void addCourse(Course curso, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); Element c = new Element("curso", ns); c.setAttribute("id", curso.getID()); Element idProfesor = new Element("idProfesor", ns); idProfesor.setText(curso.getIDProfesor()); Element nombre = new Element("nombre", ns); nombre.setText(curso.getNombre()); c.addContent(idProfesor); c.addContent(nombre); rootNode.addContent(c); 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()); } } public static boolean deleteCourse(String idCurso, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); boolean find = false; for (Element e : rootNode.getChildren("curso", ns)) if (e.getAttributeValue("id").equals(idCurso)) { find = rootNode.removeContent(e); 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 addCode(String idCourse, String idCode, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); List<Element> lista = rootNode.getChildren("curso", ns); boolean find = false; for (Element e : lista) if (e.getAttributeValue("id").equals(idCourse)) { find = true; Element idCo = new Element("idCodigo", ns); idCo.setText(idCode); e.addContent(e.indexOf(e.getChild("nombre", ns)), idCo); 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 removeCode(String idCourse, String idCode, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); List<Element> lista = rootNode.getChildren("curso", ns); boolean find = false; for (Element e : lista) if (e.getAttributeValue("id").equals(idCourse)) { for (Element c : e.getChildren("idCodigo", ns)) if (c.getTextTrim().equals(idCode)) { find = e.removeContent(c); break; } 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 addUser(String idCourse, String idUser, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); List<Element> lista = rootNode.getChildren("curso", ns); boolean find = false; for (Element e : lista) if (e.getAttributeValue("id").equals(idCourse)) { find = true; Element idUs = new Element("idAlumno", ns); idUs.setText(idUser); e.addContent(2, idUs); 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 removeUser(String idCourse, String idUser, String xmlSource) { try { Document doc = builder.build(xmlSource); Element rootNode = doc.getRootElement(); List<Element> lista = rootNode.getChildren("curso", ns); boolean find = false; for (Element e : lista) if (e.getAttributeValue("id").equals(idCourse)) { for (Element c : e.getChildren("idAlumno", ns)) if (c.getTextTrim().equals(idUser)) { find = e.removeContent(c); break; } 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; } }