IKeyAllocator


1   //  Copyright 2004 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.tapestry.vlib.ejb;
16  
17  import java.rmi.RemoteException  ;
18  
19  import javax.ejb.EJBObject  ;
20  
21  /**
22   *  Remote interface to the KeyAllocator stateless
23   *  session bean.
24   *  
25   *  @version $Id: IKeyAllocator.java,v 1.3 2004/02/19 17:37:39 hlship Exp $
26   *  @author Howard Lewis Ship
27   *
28   */
29  
30  public interface IKeyAllocator extends EJBObject  
31  {
32      /**
33       *  Allocates a new key, possibling reserving it from
34       *  the database.  The value returned is guarenteed to
35       *  not have been previously returned by any instance.
36       *
37       */
38  
39      public Integer   allocateKey() throws RemoteException  ;
40  
41      /**
42       * Allocates several keys, as if invoking {@link #allocateKey}
43       * multiple times.  No guarentees are made that the
44       * values are sequential or in any order, just that they
45       * are unique.
46       *
47       */
48  
49      public Integer  [] allocateKeys(int count) throws RemoteException  ;
50  }

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