Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactFactory.java @ 20:ff666592c1c3

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Added factory listing '/factories' to web app. artifacts/trunk@51 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 09 Sep 2009 14:33:25 +0000
parents 5a6b6a3debc7
children d5dc2900392f
rev   line source
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1 package de.intevation.artifactdatabase;
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2
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3 import org.w3c.dom.Document;
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4 import org.w3c.dom.Node;
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6 import de.intevation.artifacts.ArtifactFactory;
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7 import de.intevation.artifacts.Artifact;
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9 import org.apache.log4j.Logger;
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11 /**
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12 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
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13 */
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14 public class DefaultArtifactFactory
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15 implements ArtifactFactory
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16 {
17
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17 private static Logger logger =
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18 Logger.getLogger(DefaultArtifactFactory.class);
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20 public static final String XPATH_TTL = "@ttl";
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21 public static final String XPATH_NAME = "@name";
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22 public static final String XPATH_DESCRIPTION = "@description";
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23 public static final String XPATH_ARTIFACT = "@artifact";
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24
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25 public static final String DEFAULT_DESCRIPTION =
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26 "No description available";
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28 public static final String DEFAULT_ARTIFACT =
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29 "de.intevation.artifactdatabase.DefaultArtifact";
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31 protected Long ttl;
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32
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33 protected String name;
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35 protected String description;
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36
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37 protected Class artifactClass;
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38
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39 public DefaultArtifactFactory() {
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40 }
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41
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42 public String getName() {
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43 return name;
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44 }
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46 public String getDescription() {
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47 return description;
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48 }
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50 public Artifact createArtifact(String identifier, Object context) {
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51
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52 try {
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53 Artifact artifact =
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54 (Artifact)artifactClass.newInstance();
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56 artifact.setup(identifier, context);
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57
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58 return artifact;
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59 }
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60 catch (InstantiationException ie) {
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61 logger.error(ie.getLocalizedMessage(), ie);
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62 }
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63 catch (IllegalAccessException iae) {
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64 logger.error(iae.getLocalizedMessage(), iae);
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65 }
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66 catch (ClassCastException cce) {
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67 logger.error(cce.getLocalizedMessage(), cce);
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68 }
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70 return null;
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71 }
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72
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73 public void setup(Document document, Node factoryNode) {
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75 String ttlString = Config.getStringXPath(factoryNode, XPATH_TTL);
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76 if (ttlString != null) {
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77 try {
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78 ttl = Long.valueOf(ttlString);
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79 }
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80 catch (NumberFormatException nfe) {
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81 logger.warn("'" + ttlString + "' is not an integer.");
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82 }
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83 }
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85 description = Config.getStringXPath(
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86 factoryNode, XPATH_DESCRIPTION, DEFAULT_DESCRIPTION);
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87
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88 name = Config.getStringXPath(
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89 factoryNode, XPATH_NAME, toString());
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91 String artifact = Config.getStringXPath(
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92 factoryNode, XPATH_ARTIFACT, DEFAULT_ARTIFACT);
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93
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94 try {
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95 artifactClass = Class.forName(artifact);
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96 }
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97 catch (ClassNotFoundException cnfe) {
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98 logger.error(cnfe.getLocalizedMessage(), cnfe);
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99 }
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100
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101 if (artifactClass == null) {
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102 artifactClass = DefaultArtifact.class;
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103 }
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104 }
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105
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106 public Long timeToLiveUntouched(Artifact artifact, Object context) {
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107 return ttl;
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108 }
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109 }
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110 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org