XMLReader.ReadCoursesXML.java Source code

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Here is the source code for XMLReader.ReadCoursesXML.java

Source

/*
 * 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 XMLReader;

/**
 *
 * @author Alejandro Alberto Yescas Benitez
 */
import DataWeb.Course;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.Namespace;
import org.jdom2.input.SAXBuilder;
import org.jdom2.input.sax.XMLReaders;

public class ReadCoursesXML {
    private static final Namespace ns = Namespace.getNamespace("nsCourses", "http://www.w3.org/courses");
    private static final SAXBuilder builder = new SAXBuilder(XMLReaders.XSDVALIDATING);

    public static String getNextID(String xmlSource) {
        String id = "9999";

        try {
            Element rootNode = builder.build(xmlSource).getRootElement();
            List<Element> lista = rootNode.getChildren("curso", ns);

            List<Integer> ids = new ArrayList<Integer>();
            for (Element e : lista)
                ids.add(Integer.parseInt(e.getAttributeValue("id")));
            Collections.sort(ids);
            Integer i = 0;
            while (ids.get(i).equals(i))
                i++;
            id = i.toString();
        } catch (IOException io) {
            System.out.println(io.getMessage());
        } catch (JDOMException jdomex) {
            System.out.println(jdomex.getMessage());
        }

        return id;
    }

    public static List<Course> ReadCourses(String idUser, String xmlSource) {
        List<Course> curso = new ArrayList<Course>();

        try {
            Element rootNode = builder.build(xmlSource).getRootElement();
            List<Element> lista = rootNode.getChildren("curso", ns);

            for (Element e : lista)
                if (e.getChildText("idProfesor", ns).equals(idUser)) {
                    Course t = new Course(e, ns);
                    curso.add(t);
                }
        } catch (IOException io) {
            System.out.println(io.getMessage());
        } catch (JDOMException jdomex) {
            System.out.println(jdomex.getMessage());
        }

        Collections.sort(curso, new OrdenaCurso());
        return curso;
    }

    public static List<Course> ReadCourses(List<String> idCurso, String xmlSource) {
        List<Course> curso = new ArrayList<Course>();

        try {
            Element rootNode = builder.build(xmlSource).getRootElement();
            List<Element> lista = rootNode.getChildren("curso", ns);

            for (String id : idCurso)
                for (Element e : lista)
                    if (e.getAttributeValue("id").equals(id)) {
                        Course t = new Course(e, ns);
                        curso.add(t);
                        break;
                    }
        } catch (IOException io) {
            System.out.println(io.getMessage());
        } catch (JDOMException jdomex) {
            System.out.println(jdomex.getMessage());
        }

        Collections.sort(curso, new OrdenaCurso());
        return curso;
    }
}

class OrdenaCurso implements Comparator {
    @Override
    public int compare(Object o1, Object o2) {
        Course a = (Course) o1;
        Course b = (Course) o2;

        return a.getNombre().compareToIgnoreCase(b.getNombre());
    }
}