CreateAction.java :  » Wiki-Engine » ocwiki » org » ocwiki » controller » action » topic » Java Open Source

package org.ocwiki.controller.action.topic;

import java.io.IOException;

import javax.servlet.ServletException;

import org.ocwiki.controller.action.AbstractAction;
import org.ocwiki.controller.action.ActionException;
import org.ocwiki.data.Namespace;
import org.ocwiki.data.Resource;
import org.ocwiki.data.Text;
import org.ocwiki.data.Topic;
import org.ocwiki.db.dao.NamespaceDAO;
import org.ocwiki.db.dao.ResourceDAO;

import org.hibernate.exception.ConstraintViolationException;

import com.oreilly.servlet.ParameterNotFoundException;

public class CreateAction extends AbstractAction {

  @Override
  public void performImpl() throws IOException, ServletException {
    title("To ch  mi");
    try {
      String submitted = getParams().get("submit");
      if ("create".equals(submitted)) {
        String name = "";
        try {
          name = getParams().getString("name");
        } catch (ParameterNotFoundException ex) {
          addError("name", "Bn cn nhp tn ch .");
        }

        Resource<Topic> parent = null;
        try {
          parent = ResourceDAO.fetchById(getParams().getLong(
              "parent"), Topic.class);
        } catch (ParameterNotFoundException e) {
          parent = null;
        } catch (NumberFormatException ex) {
          addError("parent", "Ch  khng hp l");
        }

        String content = getParams().get("content");
        
        if (hasNoErrors()) {
          Topic newTopic = new Topic(NamespaceDAO
              .fetch(Namespace.TOPIC), name, parent, new Text(
              content));
          Resource<Topic> resource = ResourceDAO.create(getUser(), Topic.class, newTopic);
          setNextAction("article.view?id=" + resource.getId());
          return;
        }
      }
    } catch (NumberFormatException ex) {
      throw new ActionException("ID khng hp l");
    } catch (ConstraintViolationException ex) {
      if ("top_name".equals(ex.getConstraintName())) { // trng tn
        addError("name", " c ch  trng tn");
      } else {
        throw ex;
      }
    }
  }

}