Challenge.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2019 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.students.entities;
 
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.Temporal;
import org.turro.string.Strings;
import org.turro.action.Contacts;
import org.turro.entities.Entities;
import org.turro.entities.IElephantEntity;
import org.turro.jpa.entity.EntityCollections;
import org.turro.jpa.entity.IDaoEntity;
import org.turro.parser.wiki.WikiCompiler;
import org.turro.plugin.contacts.IContact;
import org.turro.reflection.MappingSet;
 
@Entity
public class Challenge implements java.io.Serializable, IDaoEntity {
 
  @Id
  @GeneratedValue(strategy=GenerationType.IDENTITY)
  @Column(name="IDENTIFIER")
  private Long id;
 
  private String entityPath;
 
  private String idChallenger;
  private String name;
  
  private String question;
  
  @Temporal(value = javax.persistence.TemporalType.TIMESTAMP)
  private java.util.Date creation;
  
  @Temporal(value = javax.persistence.TemporalType.DATE)
  private java.util.Date deadline;
  
  @Lob
  @Column(length=4096)
  private String text;
 
  @Lob
  @Column(length=4096)
  private String wikiText;
 
  @OneToMany(mappedBy = "challenge", fetch = FetchType.EAGER, cascade = CascadeType.ALL, orphanRemoval=true)
  @OrderBy(value="creation")
  private Set<Response> responses = new HashSet<>();
 
  public Long getId() {
    return id;
  }
 
  public void setId(Long id) {
    this.id = id;
  }
 
  public String getEntityPath() {
    return entityPath;
  }
 
  public void setEntityPath(String entityPath) {
    this.entityPath = entityPath;
  }
 
  public String getIdChallenger() {
    return idChallenger;
  }
 
  public void setIdChallenger(String idChallenger) {
    this.idChallenger = idChallenger;
  }
 
  public String getName() {
    return name;
  }
 
  public void setName(String name) {
    this.name = name;
  }
 
  public String getQuestion() {
    return question;
  }
 
  public void setQuestion(String question) {
    this.question = question;
  }
 
  public Date getCreation() {
    return creation;
  }
 
  public void setCreation(Date creation) {
    this.creation = creation;
  }
 
  public Date getDeadline() {
    return deadline;
  }
 
  public void setDeadline(Date deadline) {
    this.deadline = deadline;
  }
 
  public String getText() {
    return text;
  }
 
  public void setText(String text) {
    this.text = text;
  }
 
  public String getWikiText() {
    return wikiText;
  }
 
  public void setWikiText(String wikiText) {
    this.wikiText = wikiText;
    this.text = WikiCompiler.source(this.wikiText).html();
  }
 
  public Set<Response> getResponses() {
    return responses;
  }
 
  public void setResponses(Set<Response> responses) {
    this.responses = responses;
  }
  
  /* IDaoEntity */
  
  @Override
  public Object entityId() {
    return id;
  }
 
  @Override
  public boolean isEmpty() {
    return Strings.isBlank(entityPath) || Strings.isBlank(idChallenger) ||
           Strings.isBlank(question);
  }
  
  public boolean removeResponse(Response response) {
    EntityCollections.entities(responses).remove(response);
    response.setChallenge(null);
    return true;
  }
  
  public boolean isParticipant(IContact contact) {
    return idChallenger.equals(contact.getId()) ||
           responses.stream().anyMatch(r -> r.getStudentIds().contains(contact.getId()));
  }
 
  public IElephantEntity getEntity() {
    return Entities.getController(entityPath);
  }
  
  private transient IContact _contact;
  
  public IContact getContact() {
    if(_contact == null) {
      _contact = Contacts.getContactById(idChallenger);
    }
    return _contact;
  }
  
  public void setContact(IContact contact) {
    _contact = contact;
    idChallenger = _contact != null ? _contact.getId() : null;
    name = _contact != null ? _contact.getName() : null;
  }
  
  /* XML Serializer */
  
  public MappingSet getSerializerMappings() {
    MappingSet set = new MappingSet();
    set.addMapping(Challenge.class, 1, 
            new String[] { "id", "question", "entityPath", "idChallenger", "creation", "deadline" }, 
            new String[] { "wikiText", "responses" });
    set.addMapping(Response.class, 2,
            new String[] { "id", "creation" }, 
            new String[] { "wikiText", "studentIds" });
    return set;
  }
 
}