Subversion Repositories WebE

package ch.ffhs.webE.action;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.StrutsStatics;

import ch.ffhs.webE.dao.RelationshipDAOImpl;

import ch.ffhs.webE.dao.RelationshipTypeDAOImpl;

import ch.ffhs.webE.dao.TermDAOImpl;

import ch.ffhs.webE.dao.UserDAOImpl;

import ch.ffhs.webE.domain.ObjectEntity;

import ch.ffhs.webE.domain.ObjectType;

import ch.ffhs.webE.domain.Relationship;

import ch.ffhs.webE.domain.RelationshipType;

import ch.ffhs.webE.domain.Term;

import ch.ffhs.webE.domain.User;

import com.opensymphony.xwork2.Action;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.ModelDriven;

/**

 * Implements actions applicable to relationship editing

 *

 * @author Thomas Lahn

 */

public class RelationshipAction extends ActionSupport implements

    ModelDriven<Relationship>

{

  private static final long serialVersionUID = 1L;

  private List<RelationshipType> relationshipTypes = new ArrayList<RelationshipType>();

  private final RelationshipTypeDAOImpl relationshipTypeDAO = new RelationshipTypeDAOImpl();

  private List<Term> terms = new ArrayList<Term>();

  private final TermDAOImpl termDAO = new TermDAOImpl();

  private List<Relationship> relationshipList = new ArrayList<Relationship>();

  private final RelationshipDAOImpl relationshipDAO = new RelationshipDAOImpl();

  private final UserDAOImpl userDAO = new UserDAOImpl();

  private Relationship relationship = new Relationship();

  /**

   * Session object

   */

  Map<String, Object> session = ActionContext.getContext().getSession();

  private final HttpServletRequest request = (HttpServletRequest) ActionContext

      .getContext().get(StrutsStatics.HTTP_REQUEST);

  /*

   * (non-Javadoc)

   *

   * @see com.opensymphony.xwork2.ModelDriven#getModel()

   */

  public Relationship getModel()

  {

    return this.relationship;

  }

  /**

   * Prepares to add a relationship

   *

   * @return

   */

  public String add()

  {

    this.setTerms(this.termDAO.getTerms());

    this.setRelationshipTypes(this.relationshipTypeDAO.getRelTypes());

    return Action.SUCCESS;

  }

  /**

   * Executes the DB query to save the user

   *

   * @return {@link Action#SUCCESS}

   */

  public String save()

  {

    this.relationship.setTermFrom(this.termDAO.getTermById(Integer

        .parseInt(this.request.getParameter("term1"))));

    this.relationship.setTermTo(this.termDAO.getTermById(Integer

        .parseInt(this.request.getParameter("term2"))));

    this.relationship.setRelationshipType(this.relationshipTypeDAO

        .getRelTypeById(Integer.parseInt(this.request.getParameter("type"))));

    if (!"1".equals(this.request.getParameter("edit")))

    {

      User user = this.userDAO.searchUsername((String) this.session

          .get("username"));

      ObjectEntity obj = new ObjectEntity(user, new ObjectType(

          ObjectType.RELATIONSHIP), user, null, new Date(), false, null, null,

          this.relationship);

      this.relationship.setObject(obj);

    }

    if (this.relationshipDAO.saveOrUpdate(this.relationship))

    {

      return Action.SUCCESS;

    }

    return Action.ERROR;

  }

  /**

   * DB query for relationship list

   *

   * @return SUCCESS

   */

  public String list()

  {

    this.relationshipList = this.relationshipDAO.listRelationships();

    return Action.SUCCESS;

  }

  /**

   * @return {@link Action#SUCCESS} if <var>id</var> > 0, {@link Action#ERROR}

   *         otherwise

   */

  public String edit()

  {

    int id = this.getIdParameter();

    if (id > 0)

    {

      this.relationship = this.relationshipDAO.getRelationshipById(id);

      if (this.relationship != null)

      {

        return Action.SUCCESS;

      }

    }

    return Action.ERROR;

  }

  /**

   * Gets the ID Parameter for update / delete requests

   *

   * @return int from the ID request. If not set or wrong, it gives back -1

   */

  private int getIdParameter()

  {

    int id = -1;

    try

    {

      id = Integer.parseInt(this.request.getParameter("id")); //$NON-NLS-1$

    }

    catch (Exception e)

    {

      /* TODO: Logging - wrong parameter set */

    }

    return id;

  }

  /**

   * deletes a user, gets the ID from the "id" parameter that was submitted with

   * the HTTP request

   *

   * @return String - either SUCCESS or ERROR constant

   */

  public String delete()

  {

    int id = this.getIdParameter();

    /* Check for malicious ID values */

    if (id > 0)

    {

      this.relationshipDAO.deleteRelationship(id);

      return Action.SUCCESS;

    }

    else

    {

      return Action.ERROR;

    }

  }

  /*

   * Standard getters and setters

   */

  /**

   * @return The relationship edited with this instance

   */

  public Relationship getRelationship()

  {

    return this.relationship;

  }

  /**

   * @param relationship

   *          The relationship edited with this instance

   */

  public void setRelationship(Relationship relationship)

  {

    this.relationship = relationship;

  }

  /**

   * @return The list of terms edited with this instance

   */

  public List<Relationship> getRelationshipList()

  {

    return this.relationshipList;

  }

  /**

   * @param relationshipList

   *          The list of terms edited with this instance

   */

  public void setRelationshipList(List<Relationship> relationshipList)

  {

    this.relationshipList = relationshipList;

  }

  /**

   * @return the relationshipTypes

   */

  public List<RelationshipType> getRelationshipTypes()

  {

    return this.relationshipTypes;

  }

  /**

   * @param relationshipTypes

   *          the relationshipTypes to set

   */

  public void setRelationshipTypes(List<RelationshipType> relationshipTypes)

  {

    this.relationshipTypes = relationshipTypes;

  }

  /**

   * @return the terms

   */

  public List<Term> getTerms()

  {

    return this.terms;

  }

  /**

   * @param terms

   *          the terms to set

   */

  public void setTerms(List<Term> terms)

  {

    this.terms = terms;

  }

}