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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/rest/UserResource.java @ 258:c41b300b02c3

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Improved the ClientProtocolUtils: collections OUT document contains attributes now. artifacts/trunk@1907 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 12 May 2011 09:06:34 +0000
parents f92ad0e40df2
children b77465617071
rev   line source
137
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1 /*
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2 * Copyright (c) 2011 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 package de.intevation.artifactdatabase.rest;
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9
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10 import de.intevation.artifacts.ArtifactDatabase;
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11 import de.intevation.artifacts.ArtifactDatabaseException;
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12
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13 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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14 import de.intevation.artifacts.common.utils.XMLUtils;
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15
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16 import java.io.IOException;
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17
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18 import org.apache.log4j.Logger;
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19
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20 import org.restlet.data.MediaType;
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21 import org.restlet.data.Status;
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22 import org.restlet.ext.xml.DomRepresentation;
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23 import org.restlet.representation.EmptyRepresentation;
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24 import org.restlet.representation.Representation;
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25 import org.restlet.Request;
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26 import org.restlet.Response;
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27
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28 import org.w3c.dom.Document;
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29
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30 /**
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31 * A resource that handles actions to a specific user.
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32 *
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33 * @author <a href="mailto:ingo.weinzierl@intevation">Ingo Weinzierl</a>
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34 */
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35 public class UserResource
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36 extends BaseResource
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37 {
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38 /** The logger that is used in this class.*/
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39 private static Logger logger = Logger.getLogger(UserResource.class);
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40
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41 /** server URL where to reach the resource.*/
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42 public static final String PATH = "/user/{uuid}";
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43
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44 /**
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45 * XPath to figure out the type of action (feed, advance) via the
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46 * incoming POST request.
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47 */
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48 public static final String XPATH_ACTION = "/art:action/art:type/@name";
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49
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50 /** Error message if no action was given.*/
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51 public static final String NO_ACTION_MSG = "no action given";
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52
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53 /** Error message if a unknown action was given.*/
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54 public static final String NO_SUCH_ACTION_MSG = "no such action";
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55
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56 /** Action name for deleting users.*/
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57 public static final String ACTION_DELETE = "delete";
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58
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59
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60 @Override
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61 protected Representation innerPost(Representation requestRepr) {
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62 Document inputDocument = null;
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63
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64 try {
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65 DomRepresentation input = new DomRepresentation(requestRepr);
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66 input.setNamespaceAware(true);
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67 inputDocument = input.getDocument();
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68 }
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69 catch (IOException ioe) {
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70 logger.error(ioe.getMessage());
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71 Response response = getResponse();
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72 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe);
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73 return new EmptyRepresentation();
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74 }
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75
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76 String action = XMLUtils.xpathString(
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77 inputDocument,
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78 XPATH_ACTION,
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79 ArtifactNamespaceContext.INSTANCE);
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80
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81 if (action == null || action.length() == 0) {
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82 Response response = getResponse();
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83 response.setStatus(
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84 Status.CLIENT_ERROR_BAD_REQUEST, NO_ACTION_MSG);
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85 return new EmptyRepresentation();
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86 }
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87
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88 Request request = getRequest();
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89
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90 String identifier = (String)request.getAttributes().get("uuid");
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91
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92 ArtifactDatabase db = getArtifactDatabase();
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93
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94 return dispatch(identifier, action, inputDocument, db);
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95 }
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96
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97 /**
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98 * Method to figure out which POST action (feed or advance) was
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99 * triggered and perform this operation on the artifact specified
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100 * by 'identifier' and found in the artifact database 'db'
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101 * @param identifier The identifier of the artifact.
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102 * @param action The action to be performed.
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103 * @param source The input document to further parameterize the
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104 * operation.
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105 * @param db The artifact database where to find the artifact.
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106 * @return The representation produced by the performed action.
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107 */
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108 protected Representation dispatch(
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109 String identifier,
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110 String action,
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111 Document source,
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112 ArtifactDatabase db)
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113 {
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114 Document out = null;
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115
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116 logger.info("Action: " + action + " | User: " + identifier);
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117
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118 try {
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119 if (action.equals(ACTION_DELETE)) {
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120 out = db.deleteUser(identifier, getCallMeta());
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121 }
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122 else {
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123 throw new ArtifactDatabaseException(NO_SUCH_ACTION_MSG);
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124 }
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125 }
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126 catch (ArtifactDatabaseException adbe) {
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127 logger.warn(adbe.getLocalizedMessage(), adbe);
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128 Response response = getResponse();
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129 response.setStatus(
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130 Status.CLIENT_ERROR_BAD_REQUEST, adbe.getMessage());
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131 return new EmptyRepresentation();
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132 }
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133
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134 return new DomRepresentation(MediaType.APPLICATION_XML, out);
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135 }
f92ad0e40df2 Added a resource that handles user specific actions.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
136 }
f92ad0e40df2 Added a resource that handles user specific actions.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
137 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org