Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/rest/BaseOutResource.java @ 255:efbad8c5c0e5
Improved the ClientProtocolUtils - new function to create a document that is used to set the attribute of a CollectionItem.
artifacts/trunk@1753 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Thu, 28 Apr 2011 08:10:03 +0000 |
parents | b2115f484edb |
children | d9a99b28a847 |
rev | line source |
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143
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Implemented an abstract class for the output of artifacts and collections. Added a CollectionOutResource.
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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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Move Config and XMLUtils totally to commons package.
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10 import de.intevation.artifacts.common.utils.XMLUtils; |
143
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11 |
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12 import de.intevation.artifacts.ArtifactDatabase; |
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13 import de.intevation.artifacts.ArtifactDatabaseException; |
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14 import de.intevation.artifacts.ArtifactNamespaceContext; |
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15 import de.intevation.artifacts.CallMeta; |
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16 |
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17 import java.io.IOException; |
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18 |
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19 import org.apache.log4j.Logger; |
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20 |
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21 import org.restlet.Request; |
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22 import org.restlet.Response; |
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23 |
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24 import org.restlet.data.MediaType; |
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25 import org.restlet.data.Status; |
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26 |
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27 import org.restlet.ext.xml.DomRepresentation; |
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28 |
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29 import org.restlet.representation.EmptyRepresentation; |
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30 import org.restlet.representation.Representation; |
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31 |
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32 import org.restlet.resource.ResourceException; |
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33 |
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34 import org.w3c.dom.Document; |
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35 |
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36 |
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37 /** |
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38 * Base Resource to serve the out()-outputs of collections and artifacts. |
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39 * |
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40 * @author <a href="mailto:ingo.weinzierl@intevation">Ingo Weinzierl</a> |
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41 */ |
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42 public abstract class BaseOutResource |
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43 extends BaseResource |
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44 { |
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45 /** The logger used in this class.*/ |
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46 private static Logger logger = Logger.getLogger(BaseOutResource.class); |
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47 |
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48 /** XPath to figure out the MIME type of the requested result.*/ |
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49 public static final String XPATH_MIME_TYPE = |
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50 "/art:action/art:out/art:mime-type/@value"; |
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51 |
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52 /** Default result MIME type: octet stream.*/ |
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53 public static final MediaType DEFAULT_MIME_TYPE = |
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54 MediaType.APPLICATION_OCTET_STREAM; |
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55 |
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56 |
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57 @Override |
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58 protected Representation innerPost(Representation requestRepr) |
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59 throws ResourceException |
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60 { |
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61 Document inputDocument = null; |
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62 |
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63 try { |
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64 DomRepresentation input = new DomRepresentation(requestRepr); |
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65 input.setNamespaceAware(true); |
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66 inputDocument = input.getDocument(); |
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67 } |
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68 catch (IOException ioe) { |
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69 logger.error(ioe.getMessage()); |
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70 Response response = getResponse(); |
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71 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe); |
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72 return new EmptyRepresentation(); |
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73 } |
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74 |
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75 ArtifactDatabase db = getArtifactDatabase(); |
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76 |
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77 Request request = getRequest(); |
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78 |
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79 String identifier = getIdentifier(); |
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80 |
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81 if (logger.isDebugEnabled()) { |
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82 logger.debug("looking for artifact id '" + identifier + "'"); |
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83 } |
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84 |
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85 String mimeTypeString = XMLUtils.xpathString( |
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86 inputDocument, |
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87 XPATH_MIME_TYPE, |
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88 ArtifactNamespaceContext.INSTANCE); |
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89 |
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90 MediaType mimeType = DEFAULT_MIME_TYPE; |
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91 |
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92 if (mimeTypeString != null && mimeTypeString.length() != 0) { |
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93 try { |
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94 mimeType = MediaType.valueOf(mimeTypeString); |
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95 } |
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96 catch (Exception e) { |
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97 logger.error(e.getLocalizedMessage()); |
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98 } |
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99 } |
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100 |
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101 try { |
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102 return new OutRepresentation( |
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103 mimeType, |
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104 doOut(identifier, inputDocument, db, getCallMeta())); |
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105 } |
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106 catch (ArtifactDatabaseException adbe) { |
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107 Response response = getResponse(); |
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108 response.setStatus( |
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109 Status.CLIENT_ERROR_NOT_FOUND, adbe.getMessage()); |
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110 return new EmptyRepresentation(); |
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111 } |
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112 } |
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113 |
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114 /** |
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115 * Returns the identifier of the artifact or collection. |
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116 * |
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117 * @return the identifier. |
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118 */ |
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119 protected abstract String getIdentifier(); |
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120 |
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121 /** |
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122 * This method is called to process the operation on artifacts or |
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123 * collections. |
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124 * |
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125 * @param identifier The identifier of the artifact or collection. |
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126 * @param input The input document of the request. |
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127 * @param db The artifact database. |
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128 * @param meta The CallMeta object. |
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129 * |
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130 * @return the result of the operation. |
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131 */ |
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132 protected abstract ArtifactDatabase.DeferredOutput doOut( |
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133 String identifier, |
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134 Document input, |
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135 ArtifactDatabase db, |
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136 CallMeta meta) |
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137 throws ArtifactDatabaseException; |
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138 } |
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139 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |