Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/transition/TransitionEngine.java @ 359:f93edbfcf2bc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improved the Settings and Section interfaces and added default implementations for both. artifacts/trunk@3416 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 14 Dec 2011 12:20:06 +0000
parents 8c2b6cdf22ad
children f367be55dd35
rev   line source
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
1 package de.intevation.artifactdatabase.transition;
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
2
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
3 import java.util.ArrayList;
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
4 import java.util.HashMap;
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
5 import java.util.List;
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
6 import java.util.Map;
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
7
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
8 import org.apache.log4j.Logger;
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
9
257
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
10 import de.intevation.artifacts.Artifact;
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
11
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
12 import de.intevation.artifactdatabase.state.State;
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
13 import de.intevation.artifactdatabase.state.StateEngine;
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
14
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
15
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
16 /**
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
17 * The TransitionEngine stores all transitions for each Artifact and should be
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
18 * used to determine, if an Artifact is able to advance from one to another
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
19 * state.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
20 *
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
21 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
22 */
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
23 public class TransitionEngine {
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
24
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
25 /** The logger used in this class. */
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
26 private static Logger logger = Logger.getLogger(TransitionEngine.class);
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
27
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
28 /**
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
29 * A map that contains the transitions of the artifacts. The key is the name
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
30 * of the artifact, its value is a list of all transitions of this artifact.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
31 */
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
32 protected Map<String, List> transitions;
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
33
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
34
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
35 /**
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
36 * The default constructor.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
37 */
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
38 public TransitionEngine() {
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
39 transitions = new HashMap<String, List>();
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
40 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
41
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
42
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
43 /**
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
44 * Add new transitions for a specific artifact.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
45 *
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
46 * @param stateId the name of the Artifact.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
47 * @param transitions the list of transition of the artifact.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
48 *
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
49 * @return true, if the transitions were added, otherwise false.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
50 */
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
51 public boolean addTransition(String stateId, Transition transition) {
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
52 List tmp = transitions.get(stateId);
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
53
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
54 if (tmp == null) {
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
55 tmp = new ArrayList<Transition>();
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
56 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
57
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
58 tmp.add(transition);
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
59
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
60 logger.debug("Add new transitions for state '" + stateId + "'");
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
61
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
62 return transitions.put(stateId, tmp) != null;
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
63 }
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
64
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
65
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
66 /**
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
67 * This method returns all existing transitions of a state.
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
68 *
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
69 * @param state The state
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
70 *
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
71 * @return the existing transition of <i>state</i>.
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
72 */
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
73 public List<Transition> getTransitions(State state) {
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
74 return transitions.get(state.getID());
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
75 }
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
76
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
77
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
78 /**
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
79 * This method returns the reachable states of <i>state</i>.
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
80 *
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
81 * @param state The current state.
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
82 * @param engine The state engine.
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
83 *
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
84 * @return a list of reachable states.
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
85 */
257
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
86 public List<State> getReachableStates(
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
87 Artifact artifact,
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
88 State state,
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
89 StateEngine engine) {
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
90 List<Transition> transitions = getTransitions(state);
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
91 List<State> reachable = new ArrayList<State>();
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
92
201
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
93 if (transitions == null) {
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
94 return reachable;
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
95 }
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
96
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
97 for (Transition t: transitions) {
257
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
98 State target = engine.getState(t.getTo());
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
99
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
100 if (t.isValid(artifact, state, target)) {
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
101 reachable.add(target);
108
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
102 }
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
103 }
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
104
9ece61d918b1 Improved the StateEngine and the TransitionEngine to retrieve the reachable states of a current state.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 104
diff changeset
105 return reachable;
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
106 }
201
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
107
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
108
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
109 /**
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
110 * Determines if a state with a given identifier is reachable from a current
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
111 * state.
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
112 *
257
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
113 * @param artifact The owner artifact of state <i>state</i>.
201
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
114 * @param targetId The identifier of the target state.
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
115 * @param state The start state.
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
116 * @param stateEngine The StateEngine.
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
117 *
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
118 * @return true, if the target state is reachable, otherwise false.
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
119 */
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
120 public boolean isStateReachable(
257
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
121 Artifact artifact,
201
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
122 String targetId,
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
123 State state,
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
124 StateEngine stateEngine)
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
125 {
257
8c2b6cdf22ad Modified Transition.isValid() - added the artifact and the current state to the parameter list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 201
diff changeset
126 List<State> reachable = getReachableStates(artifact, state,stateEngine);
201
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
127
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
128 if (reachable == null || reachable.size() == 0) {
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
129 return false;
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
130 }
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
131
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
132 for (State s: reachable) {
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
133 if (targetId.equals(s.getID())) {
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
134 return true;
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
135 }
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
136 }
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
137
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
138 return false;
973f244ed568 Improved the TransitionEngine with a method that determines if a State B is reachable from a State A.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 108
diff changeset
139 }
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
140 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
141 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org