Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactContext.java @ 434:403a6793077c

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Added tag flys-2.9.2 for changeset bd012f4720ae
author Sascha L. Teichmann <teichmann@intevation.de>
date Wed, 03 Oct 2012 16:32:33 +0200
parents b77465617071
children
rev   line source
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.artifactdatabase;
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10
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11 import java.util.HashMap;
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12
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13 import org.w3c.dom.Document;
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15 import de.intevation.artifacts.GlobalContext;
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16
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17 /**
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18 * Default implementation of the context.
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19 * Besides of the configuration it hosts a map to store key/value pairs.
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20 *
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21 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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22 */
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23 public class DefaultArtifactContext implements GlobalContext
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24 {
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25 /**
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26 * The global configuration document of the artifact database.
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27 */
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28 protected Document config;
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30 /**
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31 * Custom key/value pairs to be used globally in the whole server.
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32 */
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33 protected HashMap map;
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35 /**
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36 * Default constructor
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37 */
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38 public DefaultArtifactContext() {
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39 this(null);
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40 }
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42 /**
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43 * Constructor to create a context with a given global
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44 * configuration document and an empty map of custom
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45 * key/value pairs.
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46 * @param config
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47 */
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48 public DefaultArtifactContext(Document config) {
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49 this.config = config;
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50 map = new HashMap();
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51 }
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53 /**
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54 * Fetch a custom value from the global key/value map using
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55 * a given key.
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56 * @param key The key.
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57 * @return The stored value or null if no value was found under
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58 * this key.
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59 */
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60 public synchronized Object get(Object key) {
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61 return map.get(key);
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62 }
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64 /**
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65 * Store a custom key/value pair in the global map.
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66 * @param key The key to store
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67 * @param value The value to store
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68 * @return The old value registered under the key or null
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69 * if none wa there before.
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70 */
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71 public synchronized Object put(Object key, Object value) {
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72 return map.put(key, value);
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73 }
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75 /**
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76 * Returns a reference to the global configuration document.
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77 * @return The global configuration document.
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78 */
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79 public Document getConfig() {
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80 return config;
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81 }
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82 }
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83 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org