Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/transition/Transition.java @ 265:d52947ce8629

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XMLUtils.xpathString() returns empty string not null. artifacts/trunk@1976 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 23 May 2011 09:56:15 +0000
parents 8c2b6cdf22ad
children
rev   line source
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1 package de.intevation.artifactdatabase.transition;
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2
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3 import org.w3c.dom.Node;
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4
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5 import de.intevation.artifacts.Artifact;
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6
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7 import de.intevation.artifactdatabase.state.State;
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8
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9
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10 /**
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11 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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12 */
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13 public interface Transition {
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14
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15 /**
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16 * Initializes the transition.
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17 *
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18 * @param config The configuration node for the transition.
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19 */
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20 public void init(Node config);
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21
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22 /**
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23 * Return the ID of the start State.
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24 */
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25 public String getFrom();
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26
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27 /**
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28 * Return the ID of the target State.
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29 */
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30 public String getTo();
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31
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32 /**
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33 * Set the ID of the current State.
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34 *
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35 * @param from The ID of the current state.
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36 */
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37 public void setFrom(String from);
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38
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39 /**
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40 * Set the ID of the target State.
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41 *
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42 * @param to The ID of the target state.
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43 */
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44 public void setTo(String to);
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45
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46 /**
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47 * Determines if its valid to step from state <i>a</i> of an artifact
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48 * <i>artifact</i> to state <i>b</i>.
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49 *
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50 * @param artifact The owner artifact of state a and b.
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51 * @param a The current state.
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52 * @param b The target state.
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53 *
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54 * @return true, if it is valid to step from a to b, otherwise false.
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55 */
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56 public boolean isValid(Artifact artifact, State a, State b);
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57 }
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58 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org