Package edu.uga.galileo.voci.model

Examples of edu.uga.galileo.voci.model.ItemManager


      } else if (contentType == ContentType.BUNDLE) {
        request.setAttribute("vbo", (new BundleManager()).getBundle(
            command, elementId, command.isViewCommand() ? true
                : false));
      } else if (contentType == ContentType.ITEM) {
        request.setAttribute("vbo", (new ItemManager()).getItem(
            command, elementId, command.isViewCommand() ? true
                : false));
      }
    } catch (NumberFormatException e) {
      Logger.warn("Bad element ID request: "
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  @SuppressWarnings("unchecked")
  @Override
  protected void handleRequest(HttpServletRequest request,
      HttpServletResponse response) {
    Command command = (Command) request.getAttribute("command");
    ItemManager itemManager = new ItemManager();
    WorkflowManager workflowManager = new WorkflowManager();
    User user = (User) request.getSession().getAttribute("user");
    ArrayList<String> errors = new ArrayList<String>();
    HashMap<String, String> fieldMessages = new HashMap<String, String>();
    Item item = null;
    boolean updated = false;

    // handle the "view vs. admin"-specific changes
    String openNodesAttributeName = command.isViewCommand() ? "openViewNodes"
        : "openTreeNodes";
    String contentListPage = "/"
        + command.getDisplayProject()
        + (command.isViewCommand() ? "/Content.jsp"
            : "/admin/ContentList.jsp");
    String vboViewPage = "/"
        + command.getDisplayProject()
        + (command.isViewCommand() ? "/VBODisplay.jsp"
            : "/admin/Item.jsp");
    if (command.isViewCommand()) {
      request.setAttribute("vboType", "Item");
    }

    // then do the regular page processing
    ArrayList<Integer> openNodes = (ArrayList<Integer>) request
        .getSession().getAttribute(openNodesAttributeName);
    if (openNodes == null) {
      openNodes = new ArrayList<Integer>();
    }

    boolean goToList = true;
    String cancel;

    if ((command.getModifier() != null)
        && (command.getModifier().equals("search"))) {
      // prep for search functions
      setSearchObject(command, new ItemManager(), request, errors);
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("open"))) {
      // open nodes in the content tree
      openNodes(command, request, "openTreeNodes", openNodes);
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("close"))) {
      // close nodes in the content tree
      closeNodes(command, request, "openTreeNodes", openNodes);
    } else if (((cancel = request.getParameter("cancelChanges")) != null)
        && (cancel.equals("yes"))) {
      // user is canceling changes made to the item edit form
      request.setAttribute("successMessages",
          "Your changes have been cancelled.");
      int idToCancel = Integer.parseInt(request.getParameter("itemId"));
      ContentLockManager.unlockContentByTypeAndID(ContentType.ITEM
          .getValue(), idToCancel);
      goToList = true;
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("add"))) {
      // user has requested an item to add
      goToList = false;
      try {
        item = itemManager.getItem(command, -1, false);
        if ((command.getOther() != null)
            && (command.getOther().get(0).equals("to"))) {
          int parentId = Integer.parseInt(command.getOther().get(1));
          // verify that the user can edit the requested parent
          if (!workflowManager.canEdit(user, command.getProject(),
              command.getCommand(), parentId)) {
            errors.add("You don't have permission to add a "
                + "item to the requested object.");
            goToList = true;
          } else {
            try {
              ContentType parentType = DAOFactory.getHelperDAO()
                  .getContentTypeById(parentId);
              if (parentType != ContentType.ITEM) {
                if (!openNodes.contains(parentId)) {
                  openNodes.add(parentId);
                  request.getSession().setAttribute(
                      "openTreeNodes", openNodes);
                }
                request.setAttribute("parentId", String
                    .valueOf(parentId));
              } else {
                errors.add("You can't add a bundle to "
                    + "the requested element type.");
                goToList = true;
              }
            } catch (NoAvailableDAOException e) {
              Logger.fatal("Couldn't get helper DAO", e);
              errors
                  .add("A fatal internal error has occurred.  "
                      + "Please contact the system administrator.");
              goToList = true;
            }
          }
        } else {
          errors
              .add("An item must be added to a parent collection or community.");
        }
      } catch (NoSuchItemException e) {
        Logger.error("An empty item couldn't be created.", e);
        errors.add("Empty item couldn't be constructed.");
        goToList = true;
      }
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("delete"))) {
      // user is deleting an item
      try {
        int itemId = Integer.parseInt(command.getOther().get(0));
        if (!workflowManager.canEdit(user, command.getProject(),
            command.getCommand(), itemId)) {
          errors.add("You don't have permission to delete "
              + "the requested item.");
        } else {
          try {
            item = itemManager.getItemForUpdate(command, itemId,
                false, request.getSession());
            itemManager.deleteItem(item, ((User) request
                .getSession().getAttribute("user")));
            updated = true;
            request.setAttribute("successMessage", "Item " + itemId
                + " successfully deleted.");
          } catch (NoSuchItemException e) {
            errors.add("The item to delete either doesn't exist, "
                + "or it isn't empty and can't be deleted.");
          } catch (SQLException e) {
            Logger.error("Couldn't delete item.", e);
            errors
                .add("A database error occurred processing your request.");
          } catch (ContentLockedException e) {
            errors.add(e.getMessage());
          }
        }
      } catch (NumberFormatException e) {
        errors.add("Invalid item ID format.");
      } catch (NullPointerException e) {
        errors.add("Invalid item ID format.");
      }
      goToList = true;
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("view"))
        && (command.isViewCommand())) {
      // user is requesting a page from the public face
      goToList = false;

      try {
        item = itemManager.getItem(command, Integer.parseInt(command
            .getOther().get(0)), true);
      } catch (NumberFormatException e) {
        Logger.warn("Couldn't get requested item: "
            + command.getOther() == null ? "{null}" : command
            .getOther().get(0));
        goToList = true;
      } catch (NoSuchItemException e) {
        Logger.warn("Couldn't get requested item: "
            + command.getOther() == null ? "{null}" : command
            .getOther().get(0));
        goToList = true;
      }

      if (item != null) {
        request.setAttribute("vbo", item);
        int resultsPerPage = Configuration.getInt("publicItemsPerPage");
        request.setAttribute("resultsPerPage", resultsPerPage);
        request
            .setAttribute("crumbSet", TreeManager.getInstance()
                .getBreadCrumbsForVBO(command.getProject(),
                    item, true));
      }
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("update"))
        && (!command.isViewCommand())) {
      // user has requested a document to update, or has submitted an
      // update to a document from the form
      if ((command.getOther() != null) && (command.getOther().size() > 1)) {
        request.getSession().setAttribute("itemListStart",
            command.getOther().get(1));
        request.getSession().setAttribute("itemListCount",
            command.getOther().get(2));
        request.getSession().setAttribute("itemListParent",
            command.getOther().get(3));
      }

      int parentId = -1;
      goToList = false;
      if (request.getParameter("parentId") != null) {
        parentId = Integer.parseInt(request.getParameter("parentId"));
        // verify that the user can edit the requested parent
        if (!workflowManager.canEdit(user, command.getProject(),
            command.getCommand(), parentId)) {
          errors.add("You don't have permission to add a "
              + "item to the requested object.");
          goToList = true;
        } else {
          request.setAttribute("parentId", request
              .getParameter("parentId"));
        }
      }

      if (!goToList) {
        try {
          int itemId;
          boolean isFormSubmission = false;
          if (request.getParameter("itemId") != null) {
            // the id comes from the request if it's a form
            // submission
            itemId = Integer.parseInt(request
                .getParameter("itemId"));
            isFormSubmission = true;
          } else {
            // the id comes from the "other" portion of the command
            // if the user's clicked the item for editing
            itemId = Integer.parseInt(command.getOther().get(0));
          }

          if (itemId == -1) {
            // this is a new item
            try {
              item = itemManager.getItem(command, -1, false);
            } catch (NoSuchItemException e) {
              Logger.error("An empty item couldn't be created.",
                  e);
              errors.add("Empty item couldn't be constructed.");
              goToList = true;
            }
          } else {
            // this is an existing item
            // first make sure that the user can edit it
            if (!workflowManager.canEdit(user,
                command.getProject(), command.getCommand(),
                itemId)) {
              errors.add("You don't have permission to edit "
                  + "the requested item.");
              goToList = true;
            } else {
              try {
                item = itemManager.getItemForUpdate(command,
                    itemId, false, request.getSession());
              } catch (NoSuchItemException e) {
                Logger.warn("Requested item (" + itemId
                    + ") couldn't be retrieved", e);
                errors.add("Requested item (" + itemId
                    + ") couldn't be retrieved");
                goToList = true;
              } catch (ContentLockedException e) {
                errors.add(e.getMessage());
                goToList = true;
              }
            }
          }

          if ((isFormSubmission) && (item != null)) {
            String oldData = item.toString();

            populateVBOFromRequest(item, request, fieldMessages,
                true);

            String addToRepeatables = request
                .getParameter("addToRepeatables");
            if ((addToRepeatables == null)
                || (addToRepeatables.trim().length() == 0)) {

              if (oldData.equals(item.toString())) {
                errors.add("No changes detected.");
              }

              if ((errors.size() == 0)
                  && (fieldMessages.size() == 0)) {
                try {
                  if (item.getId() == -1) {
                    itemManager.addItem(user, item,
                        parentId);
                    request.setAttribute("successMessage",
                        "Item successfully added.");
                  } else {
                    itemManager.updateItem(item,
                        ((User) request.getSession()
                            .getAttribute("user")),
                        oldData);
                    updated = true;
                    request
                        .setAttribute(
                            "successMessage",
                            "Item '"
                                + item
                                    .getMetadataBasedTitle()
                                + "' successfully updated.");
                    if ((request.getParameter("fs") != null)
                        && (request
                            .getSession()
                            .getAttribute(
                                "searchResults") != null)) {
                      SearchManager
                          .updateSessionSearchResults(
                              request, item);
                    }
                  }

                  goToList = true;
                } catch (NoSuchItemException e) {
                  Logger.warn("Item " + item.getItemId()
                      + " couldn't be found for update",
                      e);
                  errors.add(e.getMessage());
                } catch (SQLException e) {
                  Logger
                      .error(
                          "Couldn't add an item to the database",
                          e);
                  errors
                      .add("A database problem occurred while updating your item: "
                          + e.getMessage());
                }
              }
            }
          }

          request.setAttribute("item", item);
        } catch (NumberFormatException e) {
          errors.add("Invalid item ID");
          goToList = true;
        }

        if (fieldMessages.size() != 0) {
          String plural = "";
          if (fieldMessages.size() > 1) {
            plural = "s";
          }
          errors.add("Form field" + plural
              + " failed validation (see below).");
        }
      }
    } else if ((command.getModifier() != null)
        && (command.getModifier().equals("history"))) {
      // user is requesting an old item record from the audit log
      goToList = false;

      String[] vals = command.getOther().get(0).split("\\|");
      AuditLogManager alm = new AuditLogManager();
      int itemId = -1;
      try {
        itemId = Integer.parseInt(vals[2]);
        if (!workflowManager.canEdit(user, command.getProject(),
            command.getCommand(), itemId)) {
          errors.add("You don't have permission to edit "
              + "the requested item.");
          goToList = true;
        } else {
          AuditLog record = alm.getRecord(Integer.parseInt(vals[0]),
              ContentType.valueOf(Integer.parseInt(vals[1])),
              (itemId = Integer.parseInt(vals[2])), Timestamp
                  .valueOf(vals[3]));
          String data = record.getDataExport();
          item = new Item();
          item.fromString(data);
        }
      } catch (NullPointerException e) {
        goToList = true;
        errors.add("Invalid history request format.");
      } catch (NumberFormatException e) {
        goToList = true;
        errors.add("Invalid history request format.");
      } catch (NoSuchAuditLogRecordException e) {
        errors.add("The history record requested couldn't be located.");
      } catch (DataTypeMismatchException e) {
        Logger.error("Data type mismatch occurred pulling "
            + command.getOther().get(0) + " from the audit log", e);
        errors
            .add("A system error was encountered (DataTypeMismatch). "
                + "Please contact a system administrator.");
      }

      if (!goToList) {
        if (item == null) {
          try {
            item = itemManager.getItem(command, itemId, false);
          } catch (NoSuchItemException e) {
            goToList = true;
            errors.add("No such item (" + itemId + ") found.");
          }
        }
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