Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/transition/TransitionEngine.java @ 201:973f244ed568

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improved the TransitionEngine with a method that determines if a State B is reachable from a State A. artifacts/trunk@1445 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 09 Mar 2011 15:48:06 +0000
parents 9ece61d918b1
children 8c2b6cdf22ad
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
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
10 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
11 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
12
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
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
14 /**
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
15 * 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
16 * 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
17 * state.
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
18 *
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
19 * @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
20 */
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
21 public class TransitionEngine {
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 /** 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
24 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
25
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
26 /**
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
27 * 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
28 * 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
29 */
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
30 protected Map<String, List> transitions;
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
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 * The default constructor.
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 public TransitionEngine() {
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
37 transitions = new HashMap<String, List>();
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
38 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
39
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 * 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
43 *
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
44 * @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
45 * @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
46 *
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
47 * @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
48 */
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
49 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
50 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
51
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
52 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
53 tmp = new ArrayList<Transition>();
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
54 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
55
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
56 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
57
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
58 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
59
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
60 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
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
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 * 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
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 * @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
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 * @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
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 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
72 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
73 }
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
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 * 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
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 * @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
80 * @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
81 *
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 * @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
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 public List<State> getReachableStates(State state, StateEngine 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
85 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
86 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
87
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
88 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
89 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
90 }
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
91
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
92 for (Transition t: transitions) {
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
93 if (t.isValid(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
94 reachable.add(engine.getState(t.getTo()));
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
95 }
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
96 }
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
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
98 return reachable;
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
99 }
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
100
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
101
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
102 /**
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
103 * 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
104 * 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
105 *
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
106 * @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
107 * @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
108 * @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
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 * @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
111 */
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 public boolean isStateReachable(
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
113 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
114 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
115 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
116 {
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 List<State> reachable = getReachableStates(state, 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
118
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 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
120 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
121 }
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
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 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
124 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
125 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
126 }
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
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 }
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
131 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
132 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org