/// <summary>
/// Generate a CSW request string.
/// </summary>
/// <remarks>
/// The CSW request string is built.
/// The request is string is build based on the request xslt.
/// </remarks>
/// <param name="param1">The search criteria</param>
/// <returns>The request string</returns>
public string GenerateCSWGetRecordsRequest(CswSearchCriteria search)
{
//build xml
StringWriter writer = new StringWriter();
StringBuilder request = new StringBuilder();
request.Append("<?xml version='1.0' encoding='UTF-8'?>");
request.Append("<GetRecords>");
request.Append("<StartPosition>" + search.StartPosition + "</StartPosition>");
request.Append("<MaxRecords>" + search.MaxRecords + "</MaxRecords>");
request.Append("<KeyWord>" + this.XmlEscape(search.SearchText) + "</KeyWord>");
request.Append("<LiveDataMap>" + search.LiveDataAndMapOnly.ToString() + "</LiveDataMap>");
if (search.Envelope != null)
{
request.Append("<Envelope>");
request.Append("<MinX>" + search.Envelope.MinX + "</MinX>");
request.Append("<MinY>" + search.Envelope.MinY + "</MinY>");
request.Append("<MaxX>" + search.Envelope.MaxX + "</MaxX>");
request.Append("<MaxY>" + search.Envelope.MaxY + "</MaxY>");
request.Append("</Envelope>");
}
request.Append("</GetRecords>");
try
{
TextReader textreader = new StringReader(request.ToString());
XmlTextReader xmltextreader = new XmlTextReader(textreader);
//load the Xml doc
XPathDocument myXPathDoc = new XPathDocument(xmltextreader);
if (requestxsltobj == null)
{
requestxsltobj = new XslCompiledTransform();
XsltSettings settings = new XsltSettings(true, true);
requestxsltobj.Load(requestxslt, settings, new XmlUrlResolver());
}
//do the actual transform of Xml
requestxsltobj.Transform(myXPathDoc, null, writer);
//requestxsltobj.Transform(myXPathDoc, null, writer);
writer.Close();
}
catch (Exception e)
{
throw e;
}
return writer.ToString();
}
/// <summary>
/// Function on click of find button
/// </summary>
/// <param name="sender">The sender object</param>
/// <param name="e">The event arguments</param>
private void btnSearch_Click(object sender, EventArgs e)
{
try
{
if (cmbCswCatalog.SelectedIndex == -1)
{
MessageBox.Show(resourceManager.GetString("catalogNotSelected"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
CswCatalog catalog = (CswCatalog)cmbCswCatalog.SelectedItem;
if (catalog == null) { throw new NullReferenceException(resourceManager.GetString("catalogNotSpecified")); }
if (!catalog.IsConnected())
{
string errMsg = "";
try { catalog.Connect(); }
catch (Exception ex) { errMsg = ex.ToString(); }
if (!catalog.IsConnected())
{
MessageBox.Show(resourceManager.GetString("catalogConnectFailed"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
// clear up result list
lstSearchResults.DataSource = null;
Cursor.Current = Cursors.WaitCursor;
// genrate search criteria
CswSearchCriteria searchCriteria = new CswSearchCriteria();
searchCriteria.SearchText = txtSearchPhrase.Text;
searchCriteria.StartPosition = 1;
searchCriteria.MaxRecords = (int)nudNumOfResults.Value; ;
searchCriteria.LiveDataAndMapOnly = (chkLiveDataAndMapOnly.CheckState == CheckState.Checked);
searchCriteria.Envelope = null; // place holder
CswSearchRequest searchRequest = new CswSearchRequest();
searchRequest.Catalog = catalog;
searchRequest.Criteria = searchCriteria;
searchRequest.Search();
CswSearchResponse response = searchRequest.GetResponse();
ArrayList alRecords = CswObjectsToArrayList(response.Records);
if (alRecords.Count == 0)
{
MessageBox.Show(resourceManager.GetString("noRecordFound"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (alRecords.Count > 0)
{
lstSearchResults.DataSource = alRecords;
lstSearchResults.DisplayMember = "Title";
lstSearchResults.ValueMember = "ID";
showAllFootPrintTSBtn.Enabled = catalog.Profile.SupportSpatialBoundary;
clearAllFootPrintTSBtn.Enabled = catalog.Profile.SupportSpatialBoundary;
displayFootPrintTSBtn.Enabled = catalog.Profile.SupportSpatialBoundary;
zoomToFootPrintTSBtn.Enabled = catalog.Profile.SupportSpatialBoundary;
showAll = true;
}
lblResult.Text = resourceManager.GetString("resultTxt") + " (" + alRecords.Count + ")";
}
catch (Exception ex)
{
MessageBox.Show(resourceManager.GetString("searchFailed"), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
/// <summary>
/// Search CSW catalog with the criteria defined by user
/// </summary>
/// <param name="sender">event sender</param>
/// <param name="e">event args</param>
private void FindButton_Click(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder();
try
{
// Todo: add more validation. only minimum validation at this point.
if (catalogComboBox.SelectedIndex == -1)
{
ShowErrorMessageBox(StringResources.PleaseSelectACswCatalog);
return;
}
CswCatalog catalog = (CswCatalog)catalogComboBox.SelectedItem;
if (catalog == null) { throw new NullReferenceException(StringResources.CswCatalogIsNull); }
// reset GUI for search results
ResetSearchResultsGUI();
System.Windows.Forms.Cursor.Current = Cursors.WaitCursor;
if (!catalog.IsConnected())
{
string errMsg = "";
try { catalog.Connect();
}
catch (Exception ex) { errMsg = ex.Message; }
if (!catalog.IsConnected())
{
sb.AppendLine("Failed to connect to Catalog");
ShowErrorMessageBox (StringResources.ConnectToCatalogFailed + "\r\n" + errMsg);
return;
}
}
// todo: need paging maganism. update SearchCriteria.StartPoistion
// generate search criteria
CswSearchCriteria searchCriteria = new CswSearchCriteria();
searchCriteria.SearchText = searchPhraseTextBox.Text;
searchCriteria.StartPosition = 1;
searchCriteria.MaxRecords = (int)maxResultsNumericUpDown.Value;
searchCriteria.LiveDataAndMapOnly = (liveDataAndMapsOnlyCheckBox.Checked);
if (useCurrentExtentCheckBox.Checked)
{
try { searchCriteria.Envelope = CurrentMapViewExtent(); }
catch (Exception ex)
{
String errMsg = StringResources.GetCurrentExtentFailed + "\r\n" +
ex.Message + "\r\n" + "\r\n" +
StringResources.UncheckCurrentExtentAndTryAgain;
sb.AppendLine(errMsg);
ShowErrorMessageBox(errMsg);
return;
}
}
else { searchCriteria.Envelope = null; }
// search
if (_searchRequest == null) { _searchRequest = new CswSearchRequest(); }
_searchRequest.Catalog = catalog;
_searchRequest.Criteria = searchCriteria;
_searchRequest.Search();
CswSearchResponse response = _searchRequest.GetResponse();
// show search results
ArrayList alRecords = CswObjectsToArrayList(response.Records);
if (alRecords.Count > 0)
{
resultsListBox.BeginUpdate();
resultsListBox.DataSource = alRecords;
resultsListBox.DisplayMember = "Title";
resultsListBox.ValueMember = "ID";
resultsListBox.SelectedIndex = 0;
resultsListBox.EndUpdate();
showAllFootprintToolStripButton.Enabled = catalog.Profile.SupportSpatialBoundary;
clearAllFootprinttoolStripButton.Enabled = catalog.Profile.SupportSpatialBoundary;
showAll = true;
}
else
{
sb.AppendLine(StringResources.NoRecordsFound);
ShowErrorMessageBox(StringResources.NoRecordsFound);
}
resultsLabel.Text = StringResources.SearchResultsLabelText + " (" + alRecords.Count.ToString() + ")";
}
catch (Exception ex)
{
sb.AppendLine(ex.Message);
ShowErrorMessageBox (ex.Message);
}
finally
{
Utils.logger.writeLog(sb.ToString());
Cursor.Current = Cursors.Default;
}
}
