Ejemplo n.º 1
0
  /**
   * Overrides the parent implementation to provide a more efficient mechanism for generating
   * primary keys, while generating the primary key support on the fly.
   *
   * @param count the batch size
   * @param entity the entity requesting primary keys
   * @param channel open JDBCChannel
   * @return NSArray of NSDictionary where each dictionary corresponds to a unique primary key value
   */
  public NSArray newPrimaryKeys(int count, EOEntity entity, JDBCChannel channel) {
    if (isPrimaryKeyGenerationNotSupported(entity)) {
      return null;
    }

    EOAttribute attribute = (EOAttribute) entity.primaryKeyAttributes().lastObject();
    String attrName = attribute.name();
    boolean isIntType = "i".equals(attribute.valueType());

    NSMutableArray results = new NSMutableArray(count);
    String sequenceName = sequenceNameForEntity(entity);
    DB2Expression expression = new DB2Expression(entity);

    boolean succeeded = false;
    for (int tries = 0; !succeeded && tries < 2; tries++) {
      while (results.count() < count) {
        try {
          StringBuffer sql = new StringBuffer();
          sql.append("SELECT ");
          sql.append("next value for " + sequenceName + " AS KEY");
          sql.append(" from sysibm.sysdummy1");
          expression.setStatement(sql.toString());
          channel.evaluateExpression(expression);
          try {
            NSDictionary row;
            while ((row = channel.fetchRow()) != null) {
              Enumeration pksEnum = row.allValues().objectEnumerator();
              while (pksEnum.hasMoreElements()) {
                Number pkObj = (Number) pksEnum.nextElement();
                Number pk;
                if (isIntType) {
                  pk = Integer.valueOf(pkObj.intValue());
                } else {
                  pk = Long.valueOf(pkObj.longValue());
                }
                results.addObject(new NSDictionary(pk, attrName));
              }
            }
          } finally {
            channel.cancelFetch();
          }
          succeeded = true;
        } catch (JDBCAdaptorException ex) {
          throw ex;
        }
      }
    }

    if (results.count() != count) {
      throw new IllegalStateException(
          "Unable to generate primary keys from the sequence for " + entity + ".");
    }

    return results;
  }
Ejemplo n.º 2
0
 public WOActionResults delete() {
   NSMutableArray personList = (NSMutableArray) session().valueForKey("personList");
   if (personList != null && personList.count() > 0) {
     for (int i = 0; i < personList.count(); i++) {
       PersonLink pers = (PersonLink) personList.objectAtIndex(i);
       if (item == EOUtilities.localInstanceOfObject(ec, pers.person())) {
         personList.removeObjectAtIndex(i);
         break;
       }
     }
   }
   return context().page();
   //		onEdit = null;
 }
Ejemplo n.º 3
0
 public void search() {
   try {
     found = Person.Utility.search(ec, entity(), searchString);
     if ((found == null || found.count() == 0) && alterEntity() != null)
       found = Person.Utility.search(ec, alterEntity(), searchString);
   } catch (Exception e) {
     searchMessage = e.getMessage();
     canCreate = false;
     return;
   }
   if (found.count() < 1) {
     searchMessage = (String) session().valueForKeyPath("strings.Strings.messages.nothingFound");
     canCreate = Various.boolForObject(session().valueForKeyPath("readAccess.create." + entity()));
     return;
   }
   NSMutableArray fullList = (NSMutableArray) session().valueForKey("personList");
   NSMutableArray tmp = found.mutableClone();
   tmp.removeObjectsInArray(fullList);
   fullList.addObjectsFromArray(tmp);
   if (fullList.count() > 1) EOSortOrdering.sortArrayUsingKeyOrderArray(fullList, Person.sorter);
   searchMessage = null;
 }