Workflow


1   /*
2    * Copyright  1999-2004 The Apache Software Foundation
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License");
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License.
15   *
16   */
17  
18  /* $Id: Workflow.java 42598 2004-03-01 16:18:28Z gregor $  */
19  
20  package org.apache.lenya.workflow;
21  
22  /**
23   * <p>A workflow schema.</p>
24   * <p>
25   * A workflow schema defines a state machine (deterministic finite
26   * automaton - DFA), consisting of
27   * </p>
28   * <ul>
29   * <li>states, including a marked initial state,</li>
30   * <li>transitions, and</li>
31   * <li>state variables.</li>
32   */
33  public interface Workflow {
34      String   NAMESPACE = "http://apache.org/cocoon/lenya/workflow/1.0";
35      String   DEFAULT_PREFIX = "wf";
36  
37      /**
38       * Returns the initial state of this workflow.
39       * @return The initial state
40       */
41      State getInitialState();
42  
43      /**
44       * Returns the transitions that leave a state.
45       * This method is used, e.g., to disable menu items.
46       * @param state A state.
47       * @return The transitions that leave the state.
48       */
49      Transition[] getLeavingTransitions(State state);
50      
51      /**
52       * Returns the variable names.
53       * @return A string array.
54       */
55      String  [] getVariableNames();
56  }
57
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags