Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactContext.java @ 217:87a7773030b5

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The Backend got a method that retrieves an ArtifactCollection based on its GID. artifacts/trunk@1556 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 24 Mar 2011 15:41:25 +0000
parents 933bbc9fc11f
children a367a0d011af
rev   line source
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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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14
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15 /**
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16 * Default implementation of the context.
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17 * Besides of the configuration it hosts a map to store key/value pairs.
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18 *
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19 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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20 */
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21 public class DefaultArtifactContext
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22 {
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23 /**
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24 * The global configuration document of the artifact database.
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25 */
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26 protected Document config;
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28 /**
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29 * Custom key/value pairs to be used globally in the whole server.
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30 */
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31 protected HashMap map;
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32
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33 /**
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34 * Default constructor
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35 */
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36 public DefaultArtifactContext() {
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37 this(null);
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38 }
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40 /**
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41 * Constructor to create a context with a given global
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42 * configuration document and an empty map of custom
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43 * key/value pairs.
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44 * @param config
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45 */
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46 public DefaultArtifactContext(Document config) {
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47 this.config = config;
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48 map = new HashMap();
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49 }
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51 /**
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52 * Fetch a custom value from the global key/value map using
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53 * a given key.
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54 * @param key The key.
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55 * @return The stored value or null if no value was found under
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56 * this key.
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57 */
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58 public synchronized Object get(Object key) {
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59 return map.get(key);
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60 }
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62 /**
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63 * Store a custom key/value pair in the global map.
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64 * @param key The key to store
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65 * @param value The value to store
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66 * @return The old value registered under the key or null
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67 * if none wa there before.
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68 */
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69 public synchronized Object put(Object key, Object value) {
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70 return map.put(key, value);
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71 }
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73 /**
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74 * Returns a reference to the global configuration document.
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75 * @return The global configuration document.
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76 */
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77 public Document getConfig() {
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78 return config;
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79 }
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80 }
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81 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org