[3340] | 1 | package org.greenstone.gsdl3.action;
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| 2 |
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[27617] | 3 | import java.io.Serializable;
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| 4 | import java.util.HashMap;
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| 5 |
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| 6 | import org.apache.log4j.Logger;
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| 7 | import org.greenstone.gsdl3.util.GSParams;
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| 8 | import org.greenstone.gsdl3.util.GSPath;
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| 9 | import org.greenstone.gsdl3.util.GSXML;
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| 10 | import org.greenstone.gsdl3.util.UserContext;
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[28964] | 11 | import org.greenstone.gsdl3.util.XMLConverter;
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[22085] | 12 | import org.greenstone.util.GlobalProperties;
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[28382] | 13 | import org.w3c.dom.Document;
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[27617] | 14 | import org.w3c.dom.Element;
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[24989] | 15 | import org.w3c.dom.Node;
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[19984] | 16 | import org.w3c.dom.NodeList;
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[3340] | 17 |
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[24989] | 18 | public class PageAction extends Action
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| 19 | {
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[14395] | 20 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.PageAction.class.getName());
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[14311] | 21 |
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[14395] | 22 | public static final String HOME_PAGE = "home";
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| 23 | public static final String ABOUT_PAGE = "about";
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| 24 | public static final String PREFS_PAGE = "pref";
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[24989] | 25 | public static final String GLI4GS3_PAGE = "gli4gs3";
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[3987] | 26 |
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[24989] | 27 | public Node process(Node message_node)
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[30540] | 28 |
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[24989] | 29 | {
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[28964] | 30 | Element message = GSXML.nodeToElement(message_node);
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| 31 | Document doc = XMLConverter.newDOM();
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[28382] | 32 |
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[25991] | 33 | Element request = (Element) GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
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| 34 | Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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| 35 | String collection = "";
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[27617] | 36 | if (paramList != null)
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[25991] | 37 | {
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| 38 | HashMap<String, Serializable> params = GSXML.extractParams(paramList, false);
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| 39 | if (params != null && params.get(GSParams.COLLECTION) != null)
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| 40 | {
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| 41 | collection = (String) params.get(GSParams.COLLECTION);
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| 42 | }
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| 43 | }
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[16688] | 44 |
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[24989] | 45 | // the page name is the subaction
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| 46 | String page_name = request.getAttribute(GSXML.SUBACTION_ATT);
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| 47 | if (page_name.equals(""))
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| 48 | { // if no page specified, assume home page
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| 49 | page_name = HOME_PAGE;
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| 50 | }
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[28382] | 51 | Element result = doc.createElement(GSXML.MESSAGE_ELEM);
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[24989] | 52 | Element response;
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| 53 | if (page_name.equals(HOME_PAGE))
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| 54 | {
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[28855] | 55 | response = homePage(request);
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[24989] | 56 | //} else if (page_name.equals(ABOUT_PAGE)) {
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| 57 | }
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| 58 | else if (page_name.equals(ABOUT_PAGE) || page_name.equals(PREFS_PAGE))
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| 59 | {
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[28855] | 60 | response = aboutPage(request);
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[24989] | 61 | //}else if (page_name.equals(PREFS_PAGE)) {
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| 62 | //response = prefsPage(request);
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| 63 | }
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| 64 | else if (page_name.equals(GLI4GS3_PAGE))
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| 65 | {
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[28855] | 66 | response = gli4gs3Page(request);
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[24989] | 67 | }
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| 68 | else
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| 69 | { // unknown page
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[28855] | 70 | response = unknownPage(request);
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[24989] | 71 | }
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| 72 |
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[28382] | 73 | Element formatMessage = doc.createElement(GSXML.MESSAGE_ELEM);
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| 74 | Element formatRequest = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_FORMAT, collection, new UserContext(request));
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[25991] | 75 | formatMessage.appendChild(formatRequest);
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| 76 | Element formatResponseMessage = (Element) this.mr.process(formatMessage);
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| 77 | Element formatResponse = (Element) GSXML.getChildByTagName(formatResponseMessage, GSXML.RESPONSE_ELEM);
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| 78 |
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| 79 | Element globalFormat = (Element) GSXML.getChildByTagName(formatResponse, GSXML.FORMAT_ELEM);
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| 80 | if (globalFormat != null)
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| 81 | {
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[28855] | 82 | response.appendChild(response.getOwnerDocument().importNode(globalFormat, true));
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[25991] | 83 | }
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| 84 |
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[28382] | 85 | result.appendChild(doc.importNode(response, true));
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[24989] | 86 | logger.debug("page action result: " + this.converter.getPrettyString(result));
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[27617] | 87 |
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[24989] | 88 | return result;
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[11230] | 89 | }
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[3568] | 90 |
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[28855] | 91 | protected Element homePage(Element request)
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[24989] | 92 | {
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[28964] | 93 | Document doc = XMLConverter.newDOM();
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[28382] | 94 |
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[30540] | 95 |
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[24993] | 96 | UserContext userContext = new UserContext(request);
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[14395] | 97 | // first, get the message router info
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[28382] | 98 | Element info_message = doc.createElement(GSXML.MESSAGE_ELEM);
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[30540] | 99 | Element info_request = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_DESCRIBE, "", userContext);
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| 100 | //Create param list
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| 101 | Element param_list_element = doc.createElement(GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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| 102 | info_request.appendChild(param_list_element);
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| 103 | //Describe params without collectionlist. Collectionlist provided by CollectionGroup service
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| 104 | GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
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| 105 | GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
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| 106 | GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
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| 107 | GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM, GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
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| 108 | info_message.appendChild(info_request);
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| 109 | //Send request to message router
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[24989] | 110 | Element info_response_message = (Element) this.mr.process(info_message);
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[30540] | 111 | //Check if it is not null
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[24989] | 112 | if (info_response_message == null)
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| 113 | {
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[14395] | 114 | logger.error(" couldn't query the message router!");
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| 115 | return null;
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| 116 | }
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[30540] | 117 | //Check if it is not null
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[24989] | 118 | Element info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
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| 119 | if (info_response == null)
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| 120 | {
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[14395] | 121 | logger.error("couldn't query the message router!");
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| 122 | return null;
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| 123 | }
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[30540] | 124 |
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| 125 | Element resp_service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
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| 126 |
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| 127 | if (resp_service_list == null) {
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| 128 | logger.error("No services available. Couldn't query the message router!");
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| 129 | return null;
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| 130 | }
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| 131 | Element groupInfoService = GSXML.getNamedElement(resp_service_list, GSXML.SERVICE_ELEM, GSXML.TYPE_ATT,
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| 132 | GSXML.SERVICE_TYPE_GROUPINFO);
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| 133 | if (groupInfoService != null) {
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| 134 | // Prepare request for CollectionGroup service to get current
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| 135 | // collections and groups list
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| 136 | Element group_info_message = doc.createElement(GSXML.MESSAGE_ELEM);
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| 137 | Element group_info_request = GSXML.createBasicRequest(doc, GSXML.TO_ATT,
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| 138 | groupInfoService.getAttribute(GSXML.NAME_ATT), userContext);
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| 139 | group_info_message.appendChild(group_info_request);
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| 140 | //Append group request if exists
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| 141 | Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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| 142 | if (paramList != null) {
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| 143 | group_info_request.appendChild(doc.importNode(paramList, true));
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| 144 | }
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| 145 | Element group_info_response_message = (Element) this.mr.process(group_info_message);
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| 146 | Element group_info_response = (Element) GSXML.getChildByTagName(group_info_response_message,
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| 147 | GSXML.RESPONSE_ELEM);
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| 148 | Element collection_list = (Element) GSXML.getChildByTagName(group_info_response,
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| 149 | GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
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| 150 | // Add Collection List from CollectionGroup Service to response
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| 151 | // from message router
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| 152 | info_response = (Element) doc.importNode(info_response, true);
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| 153 | if (collection_list != null) {
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| 154 | info_response.appendChild(doc.importNode(collection_list, true));
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| 155 | }
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| 156 | Element group_list = (Element) GSXML.getChildByTagName(group_info_response,
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| 157 | GSXML.GROUP_ELEM + GSXML.LIST_MODIFIER);
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| 158 | if (group_list != null) {
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| 159 | info_response.appendChild(doc.importNode(group_list, true));
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| 160 | }
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| 161 | // Send message to groupInfoType Services
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| 162 | } else {
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| 163 | // If no service with type SERVICE_TYPE_GROUPINFO could be provided
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| 164 | // request message router for all available collections
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| 165 | GSXML.addParameterToList(param_list_element, GSXML.SUBSET_PARAM,
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| 166 | GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
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| 167 | info_response_message = (Element) this.mr.process(info_message);
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[14395] | 168 |
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[30540] | 169 | if (info_response_message == null) {
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| 170 | logger.error(" couldn't query the message router!");
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| 171 | return null;
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| 172 | }
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| 173 | info_response = (Element) GSXML.getChildByTagName(info_response_message, GSXML.RESPONSE_ELEM);
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| 174 | if (info_response == null) {
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| 175 | logger.error("couldn't query the message router!");
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| 176 | return null;
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| 177 | }
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| 178 | }
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| 179 |
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[14395] | 180 | // second, get the metadata for each collection - we only want specific
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| 181 | // elements but for now, we'll just get it all
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[24989] | 182 | Element collection_list = (Element) GSXML.getChildByTagName(info_response, GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
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[30540] | 183 | //logger.debug(GSXML.xmlNodeToString(collection_list));
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[24989] | 184 | if (collection_list != null)
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| 185 | {
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[14395] | 186 | NodeList colls = GSXML.getChildrenByTagName(collection_list, GSXML.COLLECTION_ELEM);
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[24989] | 187 | if (colls.getLength() > 0)
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| 188 | {
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[28382] | 189 | sendMultipleRequests(doc, colls, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
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[14395] | 190 | }
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| 191 | }
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| 192 |
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| 193 | // get metadata for any services
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[24989] | 194 | Element service_list = (Element) GSXML.getChildByTagName(info_response, GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
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| 195 | if (service_list != null)
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| 196 | {
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[14395] | 197 | NodeList services = GSXML.getChildrenByTagName(service_list, GSXML.SERVICE_ELEM);
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[24989] | 198 | if (services.getLength() > 0)
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| 199 | {
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[28382] | 200 | sendMultipleRequests(doc, services, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
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[14395] | 201 | }
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| 202 | }
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| 203 |
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| 204 | // get metadata for service clusters
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[24989] | 205 | Element cluster_list = (Element) GSXML.getChildByTagName(info_response, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
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| 206 | if (cluster_list != null)
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| 207 | {
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[14395] | 208 | NodeList clusters = GSXML.getChildrenByTagName(cluster_list, GSXML.CLUSTER_ELEM);
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[24989] | 209 | if (clusters.getLength() > 0)
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| 210 | {
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[28382] | 211 | sendMultipleRequests(doc, clusters, null, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
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[14395] | 212 |
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| 213 | }
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| 214 | }
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| 215 |
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[27143] | 216 | addSiteMetadata(info_response, userContext);
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| 217 | addInterfaceOptions(info_response);
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[14395] | 218 | // all the components have been merged into info_response
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| 219 | return info_response;
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| 220 |
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| 221 | } // homePage
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| 222 |
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[24989] | 223 | protected Element aboutPage(Element request)
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| 224 | {
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[28964] | 225 | Document doc = XMLConverter.newDOM();
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[28382] | 226 |
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[24993] | 227 | UserContext userContext = new UserContext(request);
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[14395] | 228 | // extract the params from the cgi-request,
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[24989] | 229 | Element cgi_paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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[25635] | 230 | HashMap<String, Serializable> params = GSXML.extractParams(cgi_paramList, false);
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[24989] | 231 |
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| 232 | String coll_name = (String) params.get(GSParams.COLLECTION);
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| 233 | if (coll_name == null || coll_name.equals(""))
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| 234 | {
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[14395] | 235 | logger.error("about page requested with no collection or cluster specified!");
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| 236 | // return an empty response
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[28382] | 237 | Element response = doc.createElement(GSXML.RESPONSE_ELEM);
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[24993] | 238 | addSiteMetadata(response, userContext);
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[25128] | 239 | addInterfaceOptions(response);
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[19984] | 240 | return response;
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[14395] | 241 | }
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[3340] | 242 |
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[14395] | 243 | // get the collection or cluster description
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[28382] | 244 | Element coll_about_message = doc.createElement(GSXML.MESSAGE_ELEM);
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[3340] | 245 |
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[28382] | 246 | Element coll_about_request = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_DESCRIBE, coll_name, userContext);
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[14395] | 247 | coll_about_message.appendChild(coll_about_request);
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[24989] | 248 | Element coll_about_response = (Element) this.mr.process(coll_about_message);
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[14395] | 249 |
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[14642] | 250 | // add collection type attribute to paramList
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| 251 | String col_type = "";
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[24989] | 252 | NodeList collect_elem = coll_about_response.getElementsByTagName(GSXML.COLLECTION_ELEM);
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| 253 | if (collect_elem.getLength() != 0)
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| 254 | {
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| 255 | for (int i = 0; i < collect_elem.getLength(); i++)
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| 256 | {
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| 257 | Element e = (Element) collect_elem.item(i);
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| 258 | col_type = e.getAttribute(GSXML.TYPE_ATT);
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| 259 | }
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| 260 | }
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| 261 | else
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| 262 | {
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[14642] | 263 | logger.error(GSXML.COLLECTION_ELEM + " element is null");
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| 264 | }
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[24989] | 265 |
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| 266 | NodeList paramList = request.getElementsByTagName(GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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| 267 | if (paramList.getLength() != 0)
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| 268 | {
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| 269 | for (int i = 0; i < paramList.getLength(); i++)
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| 270 | {
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| 271 | Element e = (Element) paramList.item(i);
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| 272 | Element ct = GSXML.createParameter(request.getOwnerDocument(), GSParams.COLLECTION_TYPE, col_type.equalsIgnoreCase("mg") ? "0" : "1");
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| 273 | e.appendChild(ct);
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| 274 | }
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| 275 | }
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| 276 | else
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| 277 | {
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[14642] | 278 | logger.info("paramList is null!!");
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[24989] | 279 | }
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| 280 |
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| 281 | if (coll_about_response == null)
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| 282 | {
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[14395] | 283 | return null;
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| 284 | }
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[19984] | 285 |
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[14395] | 286 | // second, get the info for each service - we only want display items
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| 287 | // but for now, we'll just get it all
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| 288 | NodeList services = coll_about_response.getElementsByTagName(GSXML.SERVICE_ELEM);
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[24989] | 289 | if (services.getLength() > 0)
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| 290 | {
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[28382] | 291 | sendMultipleRequests(doc, services, coll_name, GSXML.REQUEST_TYPE_DESCRIBE, userContext);
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[14395] | 292 | }
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| 293 |
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| 294 | Element response = (Element) GSXML.getChildByTagName(coll_about_response, GSXML.RESPONSE_ELEM);
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[19984] | 295 | //add the site metadata
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[24993] | 296 | addSiteMetadata(response, userContext);
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[25128] | 297 | addInterfaceOptions(response);
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[14395] | 298 | return response;
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[3467] | 299 | }
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[24989] | 300 |
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[14395] | 301 | //protected Element prefsPage(Element request) {
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[24989] | 302 |
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[14395] | 303 | // return null;
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| 304 | //}
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[24989] | 305 |
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[14395] | 306 | /** if we dont know the page type, use this method */
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[24989] | 307 | protected Element unknownPage(Element request)
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| 308 | {
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[28964] | 309 | Document doc = XMLConverter.newDOM();
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[28382] | 310 |
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[24993] | 311 | UserContext userContext = new UserContext(request);
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[14395] | 312 | String page_name = request.getAttribute(GSXML.SUBACTION_ATT);
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[4155] | 313 |
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[14395] | 314 | // extract the params from the cgi-request,
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[24989] | 315 | Element cgi_paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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[25635] | 316 | HashMap<String, Serializable> params = GSXML.extractParams(cgi_paramList, false);
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[4950] | 317 |
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[24989] | 318 | String coll_name = (String) params.get(GSParams.COLLECTION);
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| 319 | if (coll_name == null || coll_name.equals(""))
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| 320 | {
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[14395] | 321 | // just return an empty response
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[28382] | 322 | Element response = doc.createElement(GSXML.RESPONSE_ELEM);
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[24993] | 323 | addSiteMetadata(response, userContext);
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[25128] | 324 | addInterfaceOptions(response);
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[19984] | 325 | return response;
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[14395] | 326 | }
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[5147] | 327 |
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[14395] | 328 | // else get the coll description - actually this is the same as for the about page - should we merge these two methods??
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[4155] | 329 |
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[14395] | 330 | // if there is a service specified should we get the service description instead??
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| 331 | // get the collection or cluster description
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[28382] | 332 | Element coll_about_message = doc.createElement(GSXML.MESSAGE_ELEM);
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[14395] | 333 |
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[28382] | 334 | Element coll_about_request = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_DESCRIBE, coll_name, userContext);
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[14395] | 335 | coll_about_message.appendChild(coll_about_request);
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| 336 |
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[24989] | 337 | Element coll_about_response = (Element) this.mr.process(coll_about_message);
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| 338 |
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[14395] | 339 | Element response = (Element) GSXML.getChildByTagName(coll_about_response, GSXML.RESPONSE_ELEM);
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[19984] | 340 |
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| 341 | //add the site metadata
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[24993] | 342 | addSiteMetadata(response, userContext);
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[25128] | 343 | addInterfaceOptions(response);
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[19984] | 344 |
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[14395] | 345 | return response;
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| 346 |
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[4257] | 347 | }
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[4155] | 348 |
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[28382] | 349 | protected boolean sendMultipleRequests(Document doc, NodeList items, String path_prefix, String request_type, UserContext userContext)
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[24989] | 350 | {
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[14395] | 351 | // we will send all the requests in a single message
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[28382] | 352 | Element message = doc.createElement(GSXML.MESSAGE_ELEM);
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[24989] | 353 | for (int i = 0; i < items.getLength(); i++)
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| 354 | {
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| 355 | Element c = (Element) items.item(i);
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| 356 | String path = c.getAttribute(GSXML.NAME_ATT);
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| 357 | if (path_prefix != null)
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| 358 | {
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[14395] | 359 | path = GSPath.appendLink(path_prefix, path);
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| 360 | }
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[28382] | 361 | Element request = GSXML.createBasicRequest(doc, request_type, path, userContext);
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[14395] | 362 | message.appendChild(request);
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| 363 | }
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[11230] | 364 |
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[24989] | 365 | Element response_message = (Element) this.mr.process(message);
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| 366 |
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[14395] | 367 | NodeList responses = response_message.getElementsByTagName(GSXML.RESPONSE_ELEM);
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| 368 | // check that have same number of responses as requests
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[24989] | 369 | if (items.getLength() != responses.getLength())
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| 370 | {
|
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[14395] | 371 | logger.error("didn't get a response for each request - somethings gone wrong!");
|
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| 372 | return false;
|
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[24989] | 373 | }
|
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[14395] | 374 |
|
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[24989] | 375 | for (int i = 0; i < items.getLength(); i++)
|
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| 376 | {
|
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| 377 | Element c1 = (Element) items.item(i);
|
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| 378 | Element c2 = (Element) GSXML.getChildByTagName((Element) responses.item(i), c1.getTagName());
|
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| 379 | if (c1 != null && c2 != null && c1.getAttribute(GSXML.NAME_ATT).endsWith(c2.getAttribute(GSXML.NAME_ATT)))
|
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| 380 | {
|
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[14395] | 381 | //add the new data into the original element
|
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| 382 | GSXML.mergeElements(c1, c2);
|
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[24989] | 383 | }
|
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| 384 | else
|
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| 385 | {
|
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[19641] | 386 | logger.debug(" response does not correspond to request!");
|
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[24989] | 387 | }
|
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| 388 |
|
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[14395] | 389 | }
|
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| 390 |
|
---|
| 391 | return true;
|
---|
| 392 |
|
---|
[11230] | 393 | }
|
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[14311] | 394 |
|
---|
[24989] | 395 | protected Element gli4gs3Page(Element request)
|
---|
| 396 | {
|
---|
[28964] | 397 | Document doc = XMLConverter.newDOM();
|
---|
[28382] | 398 |
|
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[14395] | 399 | String lang = request.getAttribute(GSXML.LANG_ATT);
|
---|
| 400 | String uid = request.getAttribute(GSXML.USER_ID_ATT);
|
---|
[14311] | 401 |
|
---|
[28382] | 402 | Element page_response = doc.createElement(GSXML.RESPONSE_ELEM);
|
---|
[14311] | 403 |
|
---|
[28382] | 404 | Element applet_elem = doc.createElement("Applet");
|
---|
[14395] | 405 | page_response.appendChild(applet_elem);
|
---|
[24989] | 406 | applet_elem.setAttribute("ARCHIVE", "SignedGatherer.jar");
|
---|
| 407 | applet_elem.setAttribute("CODE", "org.greenstone.gatherer.GathererApplet");
|
---|
| 408 | applet_elem.setAttribute("CODEBASE", "applet");
|
---|
| 409 | applet_elem.setAttribute("HEIGHT", "50");
|
---|
| 410 | applet_elem.setAttribute("WIDTH", "380");
|
---|
[28382] | 411 | Element gwcgi_param_elem = doc.createElement("PARAM");
|
---|
[24989] | 412 | gwcgi_param_elem.setAttribute("name", "gwcgi");
|
---|
| 413 | String library_name = GlobalProperties.getGSDL3WebAddress();
|
---|
| 414 | gwcgi_param_elem.setAttribute("value", library_name);
|
---|
[14395] | 415 | applet_elem.appendChild(gwcgi_param_elem);
|
---|
| 416 |
|
---|
[28382] | 417 | Element gsdl3_param_elem = doc.createElement("PARAM");
|
---|
[24989] | 418 | gsdl3_param_elem.setAttribute("name", "gsdl3");
|
---|
| 419 | gsdl3_param_elem.setAttribute("value", "true");
|
---|
[14395] | 420 | applet_elem.appendChild(gsdl3_param_elem);
|
---|
| 421 |
|
---|
| 422 | return page_response;
|
---|
| 423 | }
|
---|
[3340] | 424 | }
|
---|