1 | package org.greenstone.gsdl3.service;
|
---|
2 |
|
---|
3 | import java.io.File;
|
---|
4 | import java.io.Serializable;
|
---|
5 | import java.util.ArrayList;
|
---|
6 | import java.util.HashMap;
|
---|
7 |
|
---|
8 | import org.apache.log4j.Logger;
|
---|
9 | import org.greenstone.gsdl3.util.GSXML;
|
---|
10 | import org.greenstone.gsdl3.util.XMLConverter;
|
---|
11 | import org.greenstone.gsdl3.util.UserContext;
|
---|
12 |
|
---|
13 | import org.greenstone.gsdl3.core.MessageRouter;
|
---|
14 |
|
---|
15 | import org.w3c.dom.Document;
|
---|
16 | import org.w3c.dom.Element;
|
---|
17 | import org.w3c.dom.NodeList;
|
---|
18 |
|
---|
19 |
|
---|
20 | public class ServiceUtil extends ServiceRack
|
---|
21 | {
|
---|
22 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.ServiceUtil.class.getName());
|
---|
23 |
|
---|
24 | protected static final String METADATA_RETRIEVAL_SERVICE = "DocumentMetadataRetrieve";
|
---|
25 |
|
---|
26 | /**********************************************************
|
---|
27 | * The list of services the utility service rack supports *
|
---|
28 | *********************************************************/
|
---|
29 | protected static final String GET_ALL_IMAGES_IN_COLLECTION = "GetAllImagesInCollection";
|
---|
30 | /*********************************************************/
|
---|
31 |
|
---|
32 | String[] services = { GET_ALL_IMAGES_IN_COLLECTION };
|
---|
33 |
|
---|
34 | public boolean configure(Element info, Element extra_info)
|
---|
35 | {
|
---|
36 | if (!super.configure(info, extra_info))
|
---|
37 | {
|
---|
38 | return false;
|
---|
39 | }
|
---|
40 |
|
---|
41 | logger.info("Configuring ServiceUtil...");
|
---|
42 | this.config_info = info;
|
---|
43 |
|
---|
44 | for (int i = 0; i < services.length; i++)
|
---|
45 | {
|
---|
46 | Element service = this.desc_doc.createElement(GSXML.SERVICE_ELEM);
|
---|
47 | service.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
|
---|
48 | service.setAttribute(GSXML.NAME_ATT, services[i]);
|
---|
49 | this.short_service_info.appendChild(service);
|
---|
50 | }
|
---|
51 |
|
---|
52 | return true;
|
---|
53 | }
|
---|
54 |
|
---|
55 | protected Element getServiceDescription(Document doc, String service_id, String lang, String subset)
|
---|
56 | {
|
---|
57 | for (int i = 0; i < services.length; i++)
|
---|
58 | {
|
---|
59 | if (service_id.equals(services[i]))
|
---|
60 | {
|
---|
61 | Element service_elem = doc.createElement(GSXML.SERVICE_ELEM);
|
---|
62 | service_elem.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
|
---|
63 | service_elem.setAttribute(GSXML.NAME_ATT, services[i]);
|
---|
64 | return service_elem;
|
---|
65 | }
|
---|
66 | }
|
---|
67 |
|
---|
68 | return null;
|
---|
69 | }
|
---|
70 |
|
---|
71 | protected Element processGetAllImagesInCollection(Element request)
|
---|
72 | {
|
---|
73 | Document result_doc = XMLConverter.newDOM();
|
---|
74 | Element result = GSXML.createBasicResponse(result_doc, GET_ALL_IMAGES_IN_COLLECTION);
|
---|
75 |
|
---|
76 | if (request == null)
|
---|
77 | {
|
---|
78 | GSXML.addError(result, GET_ALL_IMAGES_IN_COLLECTION + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
|
---|
79 | return result;
|
---|
80 | }
|
---|
81 |
|
---|
82 | String lang = request.getAttribute(GSXML.LANG_ATT);
|
---|
83 | String uid = request.getAttribute(GSXML.USER_ID_ATT);
|
---|
84 |
|
---|
85 | // Get the parameters of the request
|
---|
86 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
|
---|
87 |
|
---|
88 | if (param_list == null) {
|
---|
89 | GSXML.addError(result, GET_ALL_IMAGES_IN_COLLECTION + ": No param list specified", GSXML.ERROR_TYPE_SYNTAX);
|
---|
90 | return result; // Return the empty result
|
---|
91 | }
|
---|
92 |
|
---|
93 | HashMap<String, Serializable> params = GSXML.extractParams(param_list, false);
|
---|
94 |
|
---|
95 | String regex = (String)params.get("extregex");
|
---|
96 | if(regex == null)
|
---|
97 | {
|
---|
98 | GSXML.addError(result, GET_ALL_IMAGES_IN_COLLECTION + ": No file name extensions specified", GSXML.ERROR_TYPE_SYNTAX);
|
---|
99 | return result;
|
---|
100 | }
|
---|
101 | regex = ".*" + regex + ".*";
|
---|
102 |
|
---|
103 | String collection = (String)params.get("c");
|
---|
104 | if(collection == null)
|
---|
105 | {
|
---|
106 | GSXML.addError(result, GET_ALL_IMAGES_IN_COLLECTION + ": No collection specified", GSXML.ERROR_TYPE_SYNTAX);
|
---|
107 | return result;
|
---|
108 | }
|
---|
109 |
|
---|
110 | String indexDirStr = this.site_home + File.separator + "collect" + File.separator + collection + File.separator + "index" + File.separator + "assoc";
|
---|
111 | File indexDir = new File(indexDirStr);
|
---|
112 | ArrayList<String> images = new ArrayList<String>();
|
---|
113 | getImagesRecursive(indexDir, regex, images);
|
---|
114 |
|
---|
115 | Element imageListElem = result_doc.createElement("imageList");
|
---|
116 | result.appendChild(imageListElem);
|
---|
117 | for(String i : images)
|
---|
118 | {
|
---|
119 | System.err.println("*** image i = " + i);
|
---|
120 | String assoc_dir = getAssocDir(i,indexDirStr);
|
---|
121 | System.err.println("*** image i assoc dir = " + assoc_dir);
|
---|
122 |
|
---|
123 | String doc_id = queryMRforDOCID(collection,assoc_dir);
|
---|
124 | System.err.println("*** doc id = " + doc_id);
|
---|
125 | System.err.println("======");
|
---|
126 |
|
---|
127 | Element imageElem = result_doc.createElement("image");
|
---|
128 | imageElem.setAttribute("docid", doc_id);
|
---|
129 | imageElem.appendChild(result_doc.createTextNode(i));
|
---|
130 | imageListElem.appendChild(imageElem);
|
---|
131 | }
|
---|
132 | return result;
|
---|
133 | }
|
---|
134 |
|
---|
135 | /********************
|
---|
136 | * Helper functions *
|
---|
137 | *******************/
|
---|
138 |
|
---|
139 |
|
---|
140 | private String getAssocDir(String full_filename, String remove_prefix)
|
---|
141 | {
|
---|
142 | String dir = null;
|
---|
143 |
|
---|
144 | int remove_prefix_len = remove_prefix.length();
|
---|
145 |
|
---|
146 | String dir_and_filetail = full_filename.substring(remove_prefix_len+1);
|
---|
147 |
|
---|
148 | int dir_end_pos = dir_and_filetail.lastIndexOf("/");
|
---|
149 | if (dir_end_pos > 0) {
|
---|
150 | dir = dir_and_filetail.substring(0,dir_end_pos);
|
---|
151 | }
|
---|
152 | else {
|
---|
153 | dir = dir_and_filetail;
|
---|
154 | }
|
---|
155 |
|
---|
156 | System.err.println("**** dir = " + dir);
|
---|
157 |
|
---|
158 | return dir;
|
---|
159 | }
|
---|
160 |
|
---|
161 |
|
---|
162 |
|
---|
163 | private String queryMRforDOCID(String collection, String assocfiledir) {
|
---|
164 | Document gsDoc = XMLConverter.newDOM();
|
---|
165 |
|
---|
166 | Element metaMessage = gsDoc.createElement(GSXML.MESSAGE_ELEM);
|
---|
167 | Element metaRequest = GSXML.createBasicRequest(gsDoc, GSXML.REQUEST_TYPE_PROCESS, collection + "/" + METADATA_RETRIEVAL_SERVICE, new UserContext());
|
---|
168 | metaMessage.appendChild(metaRequest);
|
---|
169 |
|
---|
170 | Element paramList = gsDoc.createElement(GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
|
---|
171 | metaRequest.appendChild(paramList);
|
---|
172 |
|
---|
173 | Element param = gsDoc.createElement(GSXML.PARAM_ELEM);
|
---|
174 | param.setAttribute(GSXML.NAME_ATT, "metadata");
|
---|
175 | param.setAttribute(GSXML.VALUE_ATT, "contains");
|
---|
176 | paramList.appendChild(param);
|
---|
177 |
|
---|
178 | Element docList = gsDoc.createElement(GSXML.DOC_NODE_ELEM + GSXML.LIST_MODIFIER);
|
---|
179 | metaRequest.appendChild(docList);
|
---|
180 |
|
---|
181 | Element doc = gsDoc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
182 | doc.setAttribute(GSXML.NODE_ID_ATT, assocfiledir);
|
---|
183 | docList.appendChild(doc);
|
---|
184 |
|
---|
185 | Element metaResponse = (Element) router.process(metaMessage);
|
---|
186 |
|
---|
187 | NodeList metadataList = metaResponse.getElementsByTagName(GSXML.METADATA_ELEM);
|
---|
188 | if (metadataList.getLength() == 0) {
|
---|
189 |
|
---|
190 | logger.error("Could not find the document ID related to this url");
|
---|
191 | return null;
|
---|
192 | }
|
---|
193 |
|
---|
194 | Element metadata = (Element) metadataList.item(0);
|
---|
195 | String document = metadata.getTextContent();
|
---|
196 | if (document != null && document.equals("")) {
|
---|
197 | document = null;
|
---|
198 | }
|
---|
199 | return document;
|
---|
200 |
|
---|
201 |
|
---|
202 | }
|
---|
203 |
|
---|
204 |
|
---|
205 |
|
---|
206 | protected void getImagesRecursive(File current, String regex, ArrayList<String> images)
|
---|
207 | {
|
---|
208 | if(current.isDirectory())
|
---|
209 | {
|
---|
210 | File[] files = current.listFiles();
|
---|
211 | for(File f : files)
|
---|
212 | {
|
---|
213 | getImagesRecursive(f, regex, images);
|
---|
214 | }
|
---|
215 | }
|
---|
216 | else
|
---|
217 | {
|
---|
218 | String path = current.getAbsolutePath();
|
---|
219 | String filename = path.substring(path.lastIndexOf(File.separator) + File.separator.length());
|
---|
220 |
|
---|
221 | if(filename.matches(regex))
|
---|
222 | {
|
---|
223 | images.add(path);
|
---|
224 | }
|
---|
225 | else
|
---|
226 | {
|
---|
227 |
|
---|
228 | }
|
---|
229 | }
|
---|
230 | }
|
---|
231 | }
|
---|