Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/transition/TransitionEngine.java @ 181:116482169b44

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Adapted the sql statements for fetching all collections and all user collections from database. artifacts/trunk@1407 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 07 Mar 2011 11:10:45 +0000
parents 9ece61d918b1
children 973f244ed568
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
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
88 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
89 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
90 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
91 }
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 }
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
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 return reachable;
104
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
95 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
96 }
26bfff409dd3 Added interfaces and engines used in concrete artifact packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
97 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org