/// <summary>
        /// Search CSW catalog using the provided criteria. Search result can be accessed by calling GetResponse().
        /// </summary>
        public void Search()
        {
            _response = new CswSearchResponse();
            StringBuilder sb = new StringBuilder();

            if (_criteria == null)
            {
                sb.AppendLine(DateTime.Now + " Criteria not specified.");
                throw new NullReferenceException("Criteria not specified.");
            }
            if (_catalog == null)
            {
                sb.AppendLine(DateTime.Now + " Catalog not specified.");
                throw new NullReferenceException("Catalog not specified.");
            }
            if (_catalog.URL == null || _catalog.URL.Length == 0)
            {
                sb.AppendLine(DateTime.Now + " Catalog URL not specified.");
                throw new NullReferenceException("Catalog URL not specified.");
            }
            if (_catalog.Profile == null)
            {
                sb.AppendLine(DateTime.Now + " Catalog profile not specified.");
                throw new NullReferenceException("Catalog profile not specified.");
            }

            CswProfile profile = _catalog.Profile;

            writeLogMessage("Csw profile used : " + profile.Name);
            // generate getRecords query
            string requestUrl   = "";
            string requestQuery = "";

            if (_catalog.Profile.isOGCRecords)
            {
                requestUrl   = _catalog.URL;
                requestQuery = "f=json&q=" + _criteria.SearchText;
            }
            else
            {
                requestUrl   = _catalog.Capabilities.GetRecords_PostURL;
                requestQuery = profile.GenerateCSWGetRecordsRequest(_criteria);
            }

            //   requestQuery = "<csw:GetCapabilities xmlns:csw=\"http://www.opengis.net/cat/csw/2.0.2\" request=\"GetCapabilities\" service=\"CSW\" version=\"2.0.2\"/>";

            requestQuery = requestQuery.Replace("utf-16", "utf-8");
            requestQuery = requestQuery.Replace("UTF-16", "UTF-8");

            // submit search query
            if (_cswClient == null)
            {
                _cswClient = new CswClient();
            }

            string responseText;

            sb.AppendLine(DateTime.Now + " Sending CSW GetRecords request to endpoint : " + requestUrl);
            sb.AppendLine("Request Query : " + requestQuery);
            if (_catalog.Profile.isOGCRecords)
            {
                responseText = _cswClient.SubmitHttpRequest("GET", requestUrl, requestQuery);
            }
            else
            {
                if (!_catalog.Capabilities.GetRecords_IsSoapEndPoint)
                {
                    responseText = _cswClient.SubmitHttpRequest("POST", requestUrl, requestQuery);
                }
                else
                {
                    responseText = _cswClient.SubmitHttpRequest("SOAP", requestUrl, requestQuery);
                }
            }

            // parse out csw search records
            CswRecords records = new CswRecords();

            sb.AppendLine(DateTime.Now + " Response received : " + responseText);
            if (_catalog.Profile.isOGCRecords)
            {
                profile.ReadOGCAPIRecordsResponse(responseText, records);
            }
            else
            {
                profile.ReadCSWGetRecordsResponse(responseText, records);
            }
            sb.AppendLine(DateTime.Now + " Parsed GetRecords response.");

            // populate CSW response
            _response.ResponseXML = responseText;
            _response.Records     = records;

            writeLogMessage(sb.ToString());
        }
예제 #2
0
        /// <summary>
        /// Parse a CSW response. 
        /// </summary>
        /// <remarks>
        /// The CSW response is parsed and the records collection is populated
        /// with the result.The reponse is parsed based on the response xslt.
        /// </remarks>
        /// <param name="param1">The string response</param>
        /// <param name="param2">The recordlist which needs to be populated</param>
        public void ReadCSWGetRecordsResponse(string responsestring, CswRecords recordslist)
        {
            try
            {
                TextReader textreader = new StringReader(responsestring);
                XmlTextReader xmltextreader = new XmlTextReader(textreader);
                //load the Xml doc
                XPathDocument xPathDoc = new XPathDocument(xmltextreader);
                if (responsexsltobj == null)
                {
                    responsexsltobj = new XslCompiledTransform();
                    XsltSettings settings = new XsltSettings(true, true);
                    responsexsltobj.Load(responsexslt, settings, new XmlUrlResolver());
                }
                //create the output stream
                StringWriter writer = new StringWriter();
                //do the actual transform of Xml
                responsexsltobj.Transform(xPathDoc, null, writer);
                writer.Close();
                //populate CswRecords
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(writer.ToString());
                XmlNodeList xmlnodes = doc.GetElementsByTagName("Record");
                foreach (XmlNode xmlnode in xmlnodes)
                {
                    CswRecord record = new CswRecord();
                    record.ID = xmlnode.SelectSingleNode("ID").InnerText;
                    record.Title = xmlnode.SelectSingleNode("Title").InnerText;
                    record.Abstract = xmlnode.SelectSingleNode("Abstract").InnerText;
                    String lowercorner = "";
                    if (this.SupportSpatialBoundary)
                    {
                        lowercorner = xmlnode.SelectSingleNode("LowerCorner").InnerText;
                    }
                    String uppercorner = "";
                    if (this.SupportSpatialBoundary)
                    {
                        uppercorner = xmlnode.SelectSingleNode("UpperCorner").InnerText;
                    }
                    if ((lowercorner.Length > 0 && uppercorner.Length > 0))
                    {
                        /*  record.BoundingBox.Maxx = Double.Parse(lowercorner.Substring(0, lowercorner.IndexOf(' ')));
                            record.BoundingBox.Miny = Double.Parse(lowercorner.Substring(lowercorner.IndexOf(' ') + 1));
                            record.BoundingBox.Minx = Double.Parse(uppercorner.Substring(0, uppercorner.IndexOf(' ')));
                            record.BoundingBox.Maxy = Double.Parse(uppercorner.Substring(uppercorner.IndexOf(' ') + 1));*/
                        Boolean parseFlag = false;
                        CultureInfo cultureInfo = new CultureInfo("en-us");
                        double pareseResult = 0.0;
                        parseFlag = Double.TryParse(lowercorner.Substring(0, lowercorner.IndexOf(' ')), NumberStyles.Number, cultureInfo, out pareseResult);
                        record.BoundingBox.Minx = pareseResult;
                        parseFlag = Double.TryParse(lowercorner.Substring(lowercorner.IndexOf(' ') + 1), NumberStyles.Number, cultureInfo, out pareseResult);
                        record.BoundingBox.Miny = pareseResult;
                        parseFlag = Double.TryParse(uppercorner.Substring(0, uppercorner.IndexOf(' ')), NumberStyles.Number, cultureInfo, out pareseResult);
                        record.BoundingBox.Maxx = pareseResult;
                        parseFlag = Double.TryParse(uppercorner.Substring(uppercorner.IndexOf(' ') + 1), NumberStyles.Number, cultureInfo, out pareseResult);
                        record.BoundingBox.Maxy = pareseResult;
                        if (parseFlag == false)
                        {
                            throw new Exception("Number format error");
                        }

                    }
                    else
                    {
                        record.BoundingBox.Maxx = 500.00;
                        record.BoundingBox.Miny = 500.00;
                        record.BoundingBox.Minx = 500.00;
                        record.BoundingBox.Maxy = 500.00;
                    }
                    XmlNode node = xmlnode.SelectSingleNode("Type");
                    if (node != null)
                    {
                        record.IsLiveDataOrMap = node.InnerText.Equals("liveData", StringComparison.OrdinalIgnoreCase);
                        if (!record.IsLiveDataOrMap)
                        {
                            record.IsLiveDataOrMap = node.InnerText.Equals("downloadableData", StringComparison.OrdinalIgnoreCase);
                        }
                    }
                    else
                    {
                        record.IsLiveDataOrMap = false;
                    }

                    XmlNode referencesNode = xmlnode.SelectSingleNode("References");
                    if (referencesNode != null)
                    {
                        String references = referencesNode.InnerText;

                        DcList list = new DcList();
                        list.add(references);
                        determineResourceUrl(record, list);

                        /*  LinkedList<String> serverList = list.get(DcList.getScheme(DcList.Scheme.SERVER));
                          if (serverList.Count > 0)
                          {
                              String serviceType = getServiceType(serverList.First.Value);
                              if (serviceType.Equals("aims") || serviceType.Equals("ags") || serviceType.Equals("wms") || serviceType.Equals("wcs"))
                              {
                                  record.MapServerURL = serverList.First.Value;
                              }
                          }*/
                    }
                    else
                        record.MapServerURL = "";

                    recordslist.AddRecord(record.ID.GetHashCode(), record);
                }
            }
            catch (Exception e)
            {
                throw e;
            }
            //return recordslist;
        }
        /// <summary>
        /// Retrieve metadata from CSW service by its ID
        /// </summary>
        /// <param name="DocID">Metadata document ID</param>
        public bool GetMetadataByID(string DocID, bool bApplyTransform)
        {
            _response = new CswSearchResponse();
            StringBuilder sb = new StringBuilder();

            if (DocID == null || DocID == "")
            {
                throw new ArgumentNullException();
            }
            if (_catalog == null)
            {
                throw new NullReferenceException("Catalog not specified.");
            }
            if (_catalog.Capabilities == null)
            {
                throw new NullReferenceException("Catalog capabilities not initialized.");
            }
            if (_catalog.Profile == null)
            {
                throw new NullReferenceException("Catalog profile not specified.");
            }

            if (_catalog.Capabilities.GetRecordByID_GetURL == null || _catalog.Capabilities.GetRecordByID_GetURL.Length == 0)
            {
                throw new NullReferenceException("GetRecordByID URL not specified for the catalog capabilities.");
            }

            CswProfile profile = _catalog.Profile;

            writeLogMessage(" Csw profile used : " + profile.Name);
            // generate request url
            string getRecordByIDBaseUrl = _catalog.Capabilities.GetRecordByID_GetURL;
            string requestUrl           = profile.GenerateCSWGetMetadataByIDRequestURL(getRecordByIDBaseUrl, DocID);

            sb.AppendLine(DateTime.Now + " GetRecordsById request URL : " + requestUrl);
            if (_cswClient == null)
            {
                _cswClient = new CswClient();
            }
            string responseText = _cswClient.SubmitHttpRequest("GET", requestUrl, "");

            _response.ResponseXML = responseText;
            sb.AppendLine(DateTime.Now + " GetRecordsById response xml : " + responseText);
            CswRecord record        = new CswRecord(DocID);
            bool      isTransformed = false;

            if (bApplyTransform)
            {
                isTransformed = profile.TransformCSWGetMetadataByIDResponse(responseText, record);
                if (isTransformed)
                {
                    sb.AppendLine(DateTime.Now + " Transformed xml : " + record.FullMetadata);
                }
            }
            else
            {
                record.FullMetadata = responseText;
            }

            /*if (!isTransformed)
             * {
             *  XmlDocument responseXml = new XmlDocument();
             *  try { responseXml.LoadXml(responseText); }
             *  catch (XmlException xmlEx)
             *  {
             *      throw new XmlException("Error occurred \r\n" + xmlEx.Message);
             *  }
             *  record.FullMetadata = responseXml.FirstChild.InnerText ;
             * }*/

            // add record to the response
            CswRecords records = new CswRecords();

            if (record != null)
            {
                records.Add(record.ID, record);
            }
            _response.Records = records;

            _mapServerUrl = record.MapServerURL;

            if (_mapServerUrl != null)
            {
                sb.AppendLine(DateTime.Now + " Map Server Url : " + _mapServerUrl);
            }

            writeLogMessage(sb.ToString());

            return(isTransformed);
        }
        /// <summary>
        /// Get Add to map information
        /// </summary>
        /// <param name="DocID">document identifier</param>
        public void GetAddToMapInfoByID(string DocID)
        {
            _response = new CswSearchResponse();
            StringBuilder sb = new StringBuilder();

            if (DocID == null || DocID == "")
            {
                throw new ArgumentNullException();
            }
            if (_catalog == null)
            {
                throw new NullReferenceException("Catalog not specified.");
            }
            if (_catalog.Capabilities == null)
            {
                throw new NullReferenceException("Catalog capabilities not initialized.");
            }
            if (_catalog.Profile == null)
            {
                throw new NullReferenceException("Catalog profile not specified.");
            }

            if (_catalog.Capabilities.GetRecordByID_GetURL == null || _catalog.Capabilities.GetRecordByID_GetURL.Length == 0)
            {
                sb.AppendLine(DateTime.Now + " GetRecordByID URL not specified for the catalog capabilities.");
                throw new NullReferenceException("GetRecordByID URL not specified for the catalog capabilities.");
            }

            CswProfile profile = _catalog.Profile;

            // generate request url
            string getRecordByIDBaseUrl = _catalog.Capabilities.GetRecordByID_GetURL;
            string requestUrl           = profile.GenerateCSWGetMetadataByIDRequestURL(getRecordByIDBaseUrl, DocID);

            sb.AppendLine(DateTime.Now + " GetRecordsById request URL : " + requestUrl);
            if (_cswClient == null)
            {
                _cswClient = new CswClient();
            }
            string responseText = _cswClient.SubmitHttpRequest("GET", requestUrl, "");

            _response.ResponseXML = responseText;

            sb.AppendLine(DateTime.Now + " GetRecordsById response xml : " + responseText);
            CswRecord record = new CswRecord(DocID);

            profile.ReadCSWGetMetadataByIDResponse(responseText, record);

            if (record.MetadataResourceURL != null && record.MetadataResourceURL.Equals("") && profile.Name.Equals("terra catalog CSW 2.0.2 AP ISO"))
            {
                record.FullMetadata = responseText;
            }

            if (record == null)
            {
                throw new NullReferenceException("Record not populated.");
            }

            // check if full metadata or resourceURL has been returned
            bool hasFullMetadata = !(record.FullMetadata == null || record.FullMetadata == "");
            bool hasResourceUrl  = !(record.MetadataResourceURL == null || record.MetadataResourceURL == "");

            if (!hasFullMetadata && !hasResourceUrl)
            {
                // throw new InvalidOperationException("Neither full metadata nor metadata resource URL was found for the CSW record.");
            }
            else if (!hasFullMetadata && record.MetadataResourceURL != null)
            {
                // need to load metadata from resource URL
                responseText        = _cswClient.SubmitHttpRequest("GET", record.MetadataResourceURL, "", "", "");
                record.FullMetadata = responseText;
            }

            // add record to the response
            CswRecords records = new CswRecords();

            if (record != null)
            {
                records.Add(record.ID, record);
            }
            _response.Records = records;

            _mapServerUrl = record.MapServerURL;

            if (_mapServerUrl != null)
            {
                sb.AppendLine(DateTime.Now + " Map Server Url : " + _mapServerUrl);
            }

            writeLogMessage(sb.ToString());
        }
예제 #5
0
 /// <summary>
 /// Constructor
 /// </summary>
 public CswSearchResponse()
 {
     _responseXML = "";
     _records = new CswRecords();
 }
 /// <summary>
 /// Constructor
 /// </summary>
 public CswSearchResponse()
 {
     _responseXML = "";
     _records     = new CswRecords();
 }
예제 #7
0
        /// <summary>
        /// Search CSW catalog using the provided criteria. Search result can be accessed by calling GetResponse(). 
        /// </summary>
        public void Search()
        {
            _response = new CswSearchResponse();
            StringBuilder sb = new StringBuilder();

            if (_criteria == null) {
                sb.AppendLine(DateTime.Now + " Criteria not specified.");
                throw new NullReferenceException("Criteria not specified."); }
            if (_catalog == null) {
                sb.AppendLine(DateTime.Now + " Catalog not specified.");
                throw new NullReferenceException("Catalog not specified."); }
            if (_catalog.URL == null || _catalog.URL.Length == 0)
            {
                sb.AppendLine(DateTime.Now + " Catalog URL not specified.");
                throw new NullReferenceException("Catalog URL not specified.");
            }
            if (_catalog.Profile == null)
            {
                sb.AppendLine(DateTime.Now + " Catalog profile not specified.");
                throw new NullReferenceException("Catalog profile not specified.");
            }

            CswProfile profile = _catalog.Profile;
            writeLogMessage("Csw profile used : " + profile.Name);
            // generate getRecords query
            string requestUrl = _catalog.Capabilities.GetRecords_PostURL;
            string requestQuery = profile.GenerateCSWGetRecordsRequest(_criteria);

         //   requestQuery = "<csw:GetCapabilities xmlns:csw=\"http://www.opengis.net/cat/csw/2.0.2\" request=\"GetCapabilities\" service=\"CSW\" version=\"2.0.2\"/>";

            requestQuery = requestQuery.Replace("utf-16", "utf-8");
            requestQuery = requestQuery.Replace("UTF-16", "UTF-8");

            // submit search query
            if (_cswClient == null) { _cswClient = new CswClient(); }

            string responseText;
            sb.AppendLine(DateTime.Now + " Sending CSW GetRecords request to endpoint : " + requestUrl);
            sb.AppendLine("Request Query : " + requestQuery);
            if(!_catalog.Capabilities.GetRecords_IsSoapEndPoint)
               responseText = _cswClient.SubmitHttpRequest("POST", requestUrl, requestQuery);
            else
               responseText = _cswClient.SubmitHttpRequest("SOAP", requestUrl, requestQuery);

            // parse out csw search records
            CswRecords records = new CswRecords();
            sb.AppendLine(DateTime.Now + " Response received : " + responseText);
            profile.ReadCSWGetRecordsResponse(responseText, records);
            sb.AppendLine(DateTime.Now + " Parsed GetRecords response.");

            // populate CSW response
            _response.ResponseXML = responseText;
            _response.Records = records;

            writeLogMessage(sb.ToString());
        }
예제 #8
0
        /// <summary>
        /// Get Add to map information
        /// </summary>
        /// <param name="DocID">document identifier</param>
        public void GetAddToMapInfoByID(string DocID)
        {

            _response = new CswSearchResponse();
            StringBuilder sb = new StringBuilder();

            if (DocID == null || DocID == "") { throw new ArgumentNullException(); }
            if (_catalog == null) { throw new NullReferenceException("Catalog not specified."); }
            if (_catalog.Capabilities == null) { throw new NullReferenceException("Catalog capabilities not initialized."); }
            if (_catalog.Profile == null) { throw new NullReferenceException("Catalog profile not specified."); }

            if (_catalog.Capabilities.GetRecordByID_GetURL == null || _catalog.Capabilities.GetRecordByID_GetURL.Length == 0)
            {
                sb.AppendLine(DateTime.Now + " GetRecordByID URL not specified for the catalog capabilities.");
                throw new NullReferenceException("GetRecordByID URL not specified for the catalog capabilities.");
            }

            CswProfile profile = _catalog.Profile;

            // generate request url
            string getRecordByIDBaseUrl = _catalog.Capabilities.GetRecordByID_GetURL;
            string requestUrl = profile.GenerateCSWGetMetadataByIDRequestURL(getRecordByIDBaseUrl, DocID);

            sb.AppendLine(DateTime.Now + " GetRecordsById request URL : " + requestUrl);
            if (_cswClient == null) { _cswClient = new CswClient(); }
            string responseText = _cswClient.SubmitHttpRequest("GET", requestUrl, "");
            _response.ResponseXML = responseText;

            sb.AppendLine(DateTime.Now + " GetRecordsById response xml : " + responseText);
            CswRecord record = new CswRecord(DocID);

            profile.ReadCSWGetMetadataByIDResponse(responseText, record);

                if (record.MetadataResourceURL != null && record.MetadataResourceURL.Equals("") && profile.Name.Equals("terra catalog CSW 2.0.2 AP ISO"))
                {
                    record.FullMetadata = responseText;
                }

                if (record == null) { throw new NullReferenceException("Record not populated."); }

                // check if full metadata or resourceURL has been returned
                bool hasFullMetadata = !(record.FullMetadata == null || record.FullMetadata == "");
                bool hasResourceUrl = !(record.MetadataResourceURL == null || record.MetadataResourceURL == "");
                if (!hasFullMetadata && !hasResourceUrl)
                {
                   // throw new InvalidOperationException("Neither full metadata nor metadata resource URL was found for the CSW record.");
                }
                else if (!hasFullMetadata && record.MetadataResourceURL != null)
                {
                    // need to load metadata from resource URL
                    responseText = _cswClient.SubmitHttpRequest("GET", record.MetadataResourceURL, "", "", "");
                    record.FullMetadata = responseText;
                }

                // add record to the response
                CswRecords records = new CswRecords();
                if (record != null) { records.Add(record.ID, record); }
                _response.Records = records;

                _mapServerUrl = record.MapServerURL;

                if (_mapServerUrl != null)
                    sb.AppendLine(DateTime.Now + " Map Server Url : " + _mapServerUrl);

                writeLogMessage(sb.ToString());
    }
예제 #9
0
        /// <summary>
        /// Retrieve metadata from CSW service by its ID 
        /// </summary>
        /// <param name="DocID">Metadata document ID</param>
        public bool GetMetadataByID(string DocID, bool bApplyTransform)
        {
            _response = new CswSearchResponse();
            StringBuilder sb = new StringBuilder();
            if (DocID == null || DocID == "") { throw new ArgumentNullException(); }
            if (_catalog == null) { throw new NullReferenceException("Catalog not specified."); }
            if (_catalog.Capabilities == null) { throw new NullReferenceException("Catalog capabilities not initialized."); }
            if (_catalog.Profile == null) { throw new NullReferenceException("Catalog profile not specified."); }

            if (_catalog.Capabilities.GetRecordByID_GetURL == null || _catalog.Capabilities.GetRecordByID_GetURL.Length == 0)
            {
                throw new NullReferenceException("GetRecordByID URL not specified for the catalog capabilities.");
            }

            CswProfile profile = _catalog.Profile;
            writeLogMessage(" Csw profile used : " + profile.Name);
            // generate request url
            string getRecordByIDBaseUrl = _catalog.Capabilities.GetRecordByID_GetURL;
            string requestUrl = profile.GenerateCSWGetMetadataByIDRequestURL(getRecordByIDBaseUrl, DocID);

            sb.AppendLine(DateTime.Now + " GetRecordsById request URL : " + requestUrl);
            if (_cswClient == null) { _cswClient = new CswClient(); }
            string responseText = _cswClient.SubmitHttpRequest("GET", requestUrl, "");
            _response.ResponseXML = responseText;
            sb.AppendLine(DateTime.Now + " GetRecordsById response xml : " + responseText);
            CswRecord record = new CswRecord(DocID);
            bool isTransformed = false;
            if (bApplyTransform)
            {
                isTransformed = profile.TransformCSWGetMetadataByIDResponse(responseText, record);
                if(isTransformed)
                    sb.AppendLine(DateTime.Now + " Transformed xml : " + record.FullMetadata);
            }
            else
            {
                record.FullMetadata = responseText;
            }

            /*if (!isTransformed)
            {
                XmlDocument responseXml = new XmlDocument();
                try { responseXml.LoadXml(responseText); }
                catch (XmlException xmlEx)
                {
                    throw new XmlException("Error occurred \r\n" + xmlEx.Message);
                }
                record.FullMetadata = responseXml.FirstChild.InnerText ;
            }*/

            // add record to the response
            CswRecords records = new CswRecords();
            if (record != null) { records.Add(record.ID, record); }
            _response.Records = records;

            _mapServerUrl = record.MapServerURL;

            if (_mapServerUrl != null)
                sb.AppendLine(DateTime.Now + " Map Server Url : " + _mapServerUrl);

            writeLogMessage(sb.ToString());

            return isTransformed;

        }