knowledge/org.argeo.support.odk/src/org/argeo/support/odk/servlet/OdkFormListServlet.java

   1 package org.argeo.support.odk.servlet;
   2
   3 import java.io.IOException;
   4 import java.io.Writer;
   5 import java.time.ZoneId;
   6 import java.time.ZoneOffset;
   7 import java.time.format.DateTimeFormatter;
   8 import java.util.Collections;
   9 import java.util.HashSet;
  10 import java.util.Set;
  11
  12 import javax.jcr.Node;
  13 import javax.jcr.NodeIterator;
  14 import javax.jcr.Property;
  15 import javax.jcr.Repository;
  16 import javax.jcr.RepositoryException;
  17 import javax.jcr.Session;
  18 import javax.jcr.query.Query;
  19 import javax.jcr.query.QueryResult;
  20 import javax.servlet.ServletException;
  21 import javax.servlet.http.HttpServlet;
  22 import javax.servlet.http.HttpServletRequest;
  23 import javax.servlet.http.HttpServletResponse;
  24
  25 import org.apache.commons.logging.Log;
  26 import org.apache.commons.logging.LogFactory;
  27 import org.argeo.api.NodeConstants;
  28 import org.argeo.cms.servlet.ServletAuthUtils;
  29 import org.argeo.entity.EntityType;
  30 import org.argeo.jcr.Jcr;
  31 import org.argeo.jcr.JcrUtils;
  32 import org.argeo.jcr.JcrxApi;
  33 import org.argeo.support.odk.OdkForm;
  34 import org.argeo.support.odk.OdkNames;
  35 import org.argeo.support.odk.OrxListType;
  36
  37 /** Lists available forms. */
  38 public class OdkFormListServlet extends HttpServlet {
  39         private static final long serialVersionUID = 2706191315048423321L;
  40         private final static Log log = LogFactory.getLog(OdkFormListServlet.class);
  41
  42         private Set<OdkForm> odkForms = Collections.synchronizedSet(new HashSet<>());
  43
  44         private DateTimeFormatter versionFormatter = DateTimeFormatter.ofPattern("YYYY-MM-dd-HHmm")
  45                         .withZone(ZoneId.from(ZoneOffset.UTC));
  46
  47         private Repository repository;
  48
  49         @Override
  50         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  51                 resp.setContentType("text/xml; charset=utf-8");
  52                 resp.setHeader("X-OpenRosa-Version", "1.0");
  53                 resp.setDateHeader("Date", System.currentTimeMillis());
  54
  55                 String serverName = req.getServerName();
  56                 int serverPort = req.getServerPort();
  57                 String protocol = serverPort == 443 || req.isSecure() ? "https" : "http";
  58
  59                 String pathInfo = req.getPathInfo();
  60
  61                 Session session = ServletAuthUtils.doAs(() -> Jcr.login(repository, NodeConstants.SYS_WORKSPACE), req);
  62 //              session = NodeUtils.openDataAdminSession(repository, NodeConstants.SYS_WORKSPACE);
  63                 Writer writer = resp.getWriter();
  64                 writer.append("<?xml version='1.0' encoding='UTF-8' ?>");
  65                 writer.append("<xforms xmlns=\"http://openrosa.org/xforms/xformsList\">");
  66                 boolean oldApproach = false;
  67                 if (!oldApproach) {
  68                         try {
  69
  70                                 Query query;
  71                                 if (pathInfo == null) {
  72 //                              query = session.getWorkspace().getQueryManager()
  73 //                                              .createQuery("SELECT * FROM [nt:unstructured]", Query.JCR_SQL2);
  74                                         query = session.getWorkspace().getQueryManager()
  75                                                         .createQuery("SELECT * FROM [" + OrxListType.xform.get() + "]", Query.JCR_SQL2);
  76                                 } else {
  77                                         query = session.getWorkspace().getQueryManager()
  78                                                         .createQuery(
  79                                                                         "SELECT node FROM [" + OrxListType.xform.get()
  80                                                                                         + "] AS node WHERE ISDESCENDANTNODE (node, '" + pathInfo + "')",
  81                                                                         Query.JCR_SQL2);
  82                                 }
  83                                 QueryResult queryResult = query.execute();
  84
  85                                 NodeIterator nit = queryResult.getNodes();
  86 //                              log.debug(session.getUserID());
  87 //                              log.debug(session.getWorkspace().getName());
  88 //                              NodeIterator nit = session.getRootNode().getNodes();
  89 //                              while (nit.hasNext()) {
  90 //                                      log.debug(nit.nextNode());
  91 //                              }
  92                                 while (nit.hasNext()) {
  93                                         StringBuilder sb = new StringBuilder();
  94                                         Node node = nit.nextNode();
  95                                         if (node.isNodeType(OrxListType.xform.get())) {
  96                                                 sb.append("<xform>");
  97                                                 sb.append("<formID>"
  98                                                                 + node.getNode(OdkNames.H_HTML + "/h:head/xforms:model/xforms:instance/xforms:data")
  99                                                                                 .getProperty("id").getString()
 100                                                                 + "</formID>");
 101                                                 sb.append("<name>" + Jcr.getTitle(node) + "</name>");
 102                                                 sb.append("<version>" + versionFormatter.format(JcrUtils.getModified(node)) + "</version>");
 103 //                                              sb.append("<version>" + versionFormatter.format(JcrUtils.getModified(node)) + "</version>");
 104                                                 sb.append("<hash>md5:" + JcrxApi.getChecksum(node, JcrxApi.MD5) + "</hash>");
 105                                                 if (node.hasProperty(Property.JCR_DESCRIPTION))
 106                                                         sb.append("<name>" + node.getProperty(Property.JCR_DESCRIPTION).getString() + "</name>");
 107                                                 sb.append("<downloadUrl>" + protocol + "://" + serverName
 108                                                                 + (serverPort == 80 || serverPort == 443 ? "" : ":" + serverPort) + "/api/odk/form/"
 109                                                                 + node.getPath() + "</downloadUrl>");
 110                                                 sb.append("</xform>");
 111                                         } else if (node.isNodeType(EntityType.formSet.get())) {
 112                                                 sb.append("<xforms-group>");
 113                                                 sb.append("<groupId>" + node.getPath() + "</groupId>");
 114                                                 sb.append("<name>" + node.getProperty(Property.JCR_TITLE).getString() + "</name>");
 115                                                 sb.append("<listUrl>" + protocol + "://" + serverName
 116                                                                 + (serverPort == 80 || serverPort == 443 ? "" : ":" + serverPort) + "/api/odk/formList"
 117                                                                 + node.getPath() + "</listUrl>");
 118                                                 sb.append("</xforms-group>");
 119                                         }
 120                                         String str = sb.toString();
 121                                         if (!str.equals("")) {
 122                                                 if (log.isDebugEnabled())
 123                                                         log.debug(str);
 124                                                 writer.append(str);
 125                                         }
 126                                 }
 127                         } catch (RepositoryException e) {
 128                                 e.printStackTrace();
 129                                 // TODO error message
 130                                 // resp.sendError(500);
 131                                 resp.sendError(503);
 132                         } finally {
 133                                 Jcr.logout(session);
 134                         }
 135
 136                 } else {
 137                         for (OdkForm form : odkForms) {
 138                                 StringBuilder sb = new StringBuilder();
 139                                 sb.append("<xform>");
 140                                 sb.append("<formID>" + form.getFormId() + "</formID>");
 141                                 sb.append("<name>" + form.getName() + "</name>");
 142                                 sb.append("<version>" + form.getVersion() + "</version>");
 143                                 sb.append("<hash>" + form.getHash(null) + "</hash>");
 144                                 sb.append("<descriptionText>" + form.getDescription() + "</descriptionText>");
 145                                 sb.append("<downloadUrl>" + protocol + "://" + serverName
 146                                                 + (serverPort == 80 || serverPort == 443 ? "" : ":" + serverPort) + "/api/odk/form/"
 147                                                 + form.getFileName() + "</downloadUrl>");
 148                                 sb.append("</xform>");
 149                                 String str = sb.toString();
 150                                 if (log.isDebugEnabled())
 151                                         log.debug(str);
 152                                 writer.append(str);
 153                         }
 154                 }
 155                 writer.append("</xforms>");
 156         }
 157
 158         public void addForm(OdkForm odkForm) {
 159                 odkForms.add(odkForm);
 160         }
 161
 162         public void removeForm(OdkForm odkForm) {
 163                 odkForms.remove(odkForm);
 164         }
 165
 166         public void setRepository(Repository repository) {
 167                 this.repository = repository;
 168         }
 169
 170 }