baseauthor.java

Torque示例

        else
        {
            // the following code is to determine if a new query is
            // called for.  If the criteria is the same as the last
            // one, just return the collection.
            boolean newCriteria = true;
                        criteria.add(BookPeer.AUTHOR_ID, getAuthorId());
                        if (!lastBooksCriteria.equals(criteria))
            {
                collBooks = BookPeer.doSelectJoinPublisher(criteria);
            }
        }
        lastBooksCriteria = criteria;

        return collBooks;
    }
                  
                    
                              
                                
                                                              
                                        
                    
                    
          
    /**
     * If this collection has already been initialized with
     * an identical criteria, it returns the collection.
     * Otherwise if this Author is new, it will return
     * an empty collection; or if this Author has previously
     * been saved, it will retrieve related Books from storage.
     *
     * This method is protected by default in order to keep the public
     * api reasonable.  You can provide public methods for those you
     * actually need in Author.
     */
    protected List getBooksJoinAuthor(Criteria criteria)
        throws TorqueException
    {
        if (collBooks == null)
        {
            if (isNew())
            {
               collBooks = new ArrayList();
            }
            else
            {
                            criteria.add(BookPeer.AUTHOR_ID, getAuthorId());
                            collBooks = BookPeer.doSelectJoinAuthor(criteria);
            }
        }
        else
        {
            // the following code is to determine if a new query is
            // called for.  If the criteria is the same as the last
            // one, just return the collection.
            boolean newCriteria = true;
                        criteria.add(BookPeer.AUTHOR_ID, getAuthorId());
                        if (!lastBooksCriteria.equals(criteria))
            {
                collBooks = BookPeer.doSelectJoinAuthor(criteria);
            }
        }
        lastBooksCriteria = criteria;

        return collBooks;
    }
                            


          
    private static List fieldNames = null;

    /**
     * Generate a list of field names.
     *
     * @return a list of field names
     */
    public static synchronized List getFieldNames()
    {
        if (fieldNames == null)
        {
            fieldNames = new ArrayList();
              fieldNames.add("AuthorId");
              fieldNames.add("FirstName");
              fieldNames.add("LastName");
              fieldNames = Collections.unmodifiableList(fieldNames);
        }
        return fieldNames;
    }

    /**
     * Retrieves a field from the object by name passed in as a String.
     *
     * @param name field name
     * @return value
     */
    public Object getByName(String name)
    {
          if (name.equals("AuthorId"))
        {
                return new Integer(getAuthorId());
            }
          if (name.equals("FirstName"))
        {
                return getFirstName();
            }
          if (name.equals("LastName"))
        {
                return getLastName();
            }
          return null;
    }
    
    /**
     * Retrieves a field from the object by name passed in
     * as a String.  The String must be one of the static
     * Strings defined in this Class' Peer.
     *
     * @param name peer name
     * @return value
     */
    public Object getByPeerName(String name)
    {
          if (name.equals(AuthorPeer.AUTHOR_ID))
        {
                return new Integer(getAuthorId());
            }
          if (name.equals(AuthorPeer.FIRST_NAME))
        {
                return getFirstName();
            }
          if (name.equals(AuthorPeer.LAST_NAME))
        {
                return getLastName();
            }
          return null;
    }

    /**
     * Retrieves a field from the object by Position as specified
     * in the xml schema.  Zero-based.
     *
     * @param pos position in xml schema
     * @return value
     */
    public Object getByPosition(int pos)
    {
            if (pos == 0)
        {
                return new Integer(getAuthorId());
            }
              if (pos == 1)
        {
                return getFirstName();
            }
              if (pos == 2)
        {
                return getLastName();
            }
              return null;
    }
     
    /**
     * Stores the object in the database.  If the object is new,
     * it inserts it; otherwise an update is performed.
     *
     * @throws Exception
     */
    public void save() throws Exception
    {
          save(AuthorPeer.getMapBuilder()
                .getDatabaseMap().getName());
      }

    /**
     * Stores the object in the database.  If the object is new,
     * it inserts it; otherwise an update is performed.
       * Note: this code is here because the method body is
     * auto-generated conditionally and therefore needs to be
     * in this file instead of in the super class, BaseObject.
       *
     * @param dbName
     * @throws TorqueException
     */
    public void save(String dbName) throws TorqueException
    {
        Connection con = null;
          try
        {
            con = Transaction.begin(dbName);
            save(con);
            Transaction.commit(con);
        }
        catch(TorqueException e)
        {
            Transaction.safeRollback(con);
            throw e;
        }
      }

      /** flag to prevent endless save loop, if this object is referenced
        by another object which falls in this transaction. */
    private boolean alreadyInSave = false;
      /**
     * Stores the object in the database.  If the object is new,
     * it inserts it; otherwise an update is performed.  This method
     * is meant to be used as part of a transaction, otherwise use
     * the save() method and the connection details will be handled
     * internally
     *
     * @param con
     * @throws TorqueException
     */
    public void save(Connection con) throws TorqueException
    {
          if (!alreadyInSave)
        {
            alreadyInSave = true;


  
            // If this object has been modified, then save it to the database.
            if (isModified())
            {
                if (isNew())
                {
                    AuthorPeer.doInsert((Author) this, con);
                    setNew(false);
                }
                else
                {
                    AuthorPeer.doUpdate((Author) this, con);
                }
            }

                                      
                
            if (collBooks != null)
            {
                for (int i = 0; i < collBooks.size(); i++)
                {
                    ((Book) collBooks.get(i)).save(con);
                }
            }
                          alreadyInSave = false;
        }
      }


                          
      /**
     * Set the PrimaryKey using ObjectKey.
     *
     * @param  authorId ObjectKey
     */
    public void setPrimaryKey(ObjectKey key)
        throws TorqueException
    {
            setAuthorId(((NumberKey) key).intValue());
        }

    /**
     * Set the PrimaryKey using a String.
     *
     * @param key
     */
    public void setPrimaryKey(String key) throws TorqueException
    {
            setAuthorId(Integer.parseInt(key));
        }

  
    /**
     * returns an id that differentiates this object from others
     * of its class.
     */
    public ObjectKey getPrimaryKey()
    {
          return SimpleKey.keyFor(getAuthorId());
      }

 

    /**
     * Makes a copy of this object.
     * It creates a new object filling in the simple attributes.
       * It then fills all the association collections and sets the
     * related objects to isNew=true.
       */
      public Author copy() throws TorqueException
    {
        return copyInto(new Author());
    }
  
    protected Author copyInto(Author copyObj) throws TorqueException
    {
          copyObj.setAuthorId(authorId);
          copyObj.setFirstName(firstName);
          copyObj.setLastName(lastName);
  
                    copyObj.setAuthorId(0);
                        
                                      
                
        List v = getBooks();
        for (int i = 0; i < v.size(); i++)
        {
            Book obj = (Book) v.get(i);
            copyObj.addBook(obj.copy());
        }
                    
        return copyObj;
    }

    /**
     * returns a peer instance associated with this om.  Since Peer classes
     * are not to have any instance attributes, this method returns the
     * same instance for all member of this class. The method could therefore
     * be static, but this would prevent one from overriding the behavior.
     */
    public AuthorPeer getPeer()
    {
        return peer;
    }

    public String toString()
    {
        StringBuffer str = new StringBuffer();
        str.append("Author:\n");
        str.append("AuthorId = ")
           .append(getAuthorId())
           .append("\n");
        str.append("FirstName = ")
           .append(getFirstName())
           .append("\n");
        str.append("LastName = ")
           .append(getLastName())
           .append("\n");
        return(str.toString());
    }
}