/// <summary>
/// Get the list of datasets for a particular path
/// </summary>
/// <param name="oServer"></param>
/// <param name="strHierarchy"></param>
/// <param name="iTimestamp"></param>
/// <param name="oBounds"></param>
/// <param name="bAOIFilter"></param>
/// <param name="bTextFilter"></param>
/// <param name="strSearchString"></param>
/// <returns>true if server's cache version changed or some other error occured</returns>
internal bool bGetDatasetList(Server oServer, string strHierarchy, int iTimestamp, BoundingBox oBounds, bool bAOIFilter, bool bTextFilter, string strSearchString)
{
string strEdition;
System.Xml.XmlDocument oDoc = null;
string strKey = oServer.Url + ':' + strHierarchy;
if (!bAOIFilter && !bTextFilter)
oDoc = oServer.Command.GetCatalog(strHierarchy, 1, 0, 0, null, null, null);
else if (!bAOIFilter && bTextFilter)
oDoc = oServer.Command.GetCatalog(strHierarchy, 1, 0, 0, strSearchString, null, null);
else if (bAOIFilter && !bTextFilter)
oDoc = oServer.Command.GetCatalog(strHierarchy, 1, 0, 0, null, oBounds, null);
else if (bAOIFilter && bTextFilter)
oDoc = oServer.Command.GetCatalog(strHierarchy, 1, 0, 0, strSearchString, oBounds, null);
if (bTextFilter)
strKey += "_" + strSearchString;
if (bAOIFilter)
strKey += "_" + oBounds.GetHashCode().ToString(CultureInfo.InvariantCulture);
string strFile = Path.Combine(oServer.CacheDir, strKey.GetHashCode().ToString(CultureInfo.InvariantCulture) + ".dap_datasetlist.gz");
FolderDatasetList oDataset = FolderDatasetList.Parse(oServer, strKey, iTimestamp, oDoc, out strEdition);
if (strEdition != oServer.CacheVersion)
{
oServer.UpdateConfiguration();
return false;
}
if (oDataset != null)
{
try
{
if (File.Exists(strFile))
File.Delete(strFile);
// --- Use SOAP formatting and GZip compression to disk ---
// --- This way we have a nice human readable format and ---
// --- we may later move caching to database based. ---
SoapFormatter formatter = new SoapFormatter();
using (Stream stream = new FileStream(strFile, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (GZipStream compStream = new GZipStream(stream, CompressionMode.Compress, true))
{
formatter.Serialize(compStream, oDataset);
compStream.Close();
stream.Close();
}
}
}
catch
{
}
}
return true;
}
internal FolderDatasetList GetDatasets(Server oServer, CatalogFolder oFolder, BoundingBox oBounds, bool bAOIFilter, bool bTextFilter, string strSearchString)
{
FolderDatasetList oRet = null;
string strKey = oServer.Url + ':' + oFolder.Hierarchy;
if (bTextFilter)
strKey += "_" + strSearchString;
if (bAOIFilter)
strKey += "_" + oBounds.GetHashCode().ToString(CultureInfo.InvariantCulture);
string strFile = Path.Combine(oServer.CacheDir, strKey.GetHashCode().ToString(CultureInfo.InvariantCulture) + ".dap_datasetlist.gz");
if (File.Exists(strFile))
{
try
{
// --- Use SOAP formatting and GZip compression to disk ---
// --- This way we have a nice human readable format and ---
// --- we may later move caching to database based. ---
SoapFormatter formatter = new SoapFormatter();
formatter.Binder = new FolderDatasetListDeserializationBinder();
using (Stream stream = new FileStream(strFile, FileMode.Open, FileAccess.Read, FileShare.Read))
{
using (GZipStream compStream = new GZipStream(stream, CompressionMode.Decompress))
{
oRet = (FolderDatasetList)formatter.Deserialize(compStream);
compStream.Close();
stream.Close();
}
}
}
catch
{
oRet = null;
try
{
if (File.Exists(strFile))
File.Delete(strFile);
}
catch (IOException) { } // Bug report where this delete failed; suppress failed deletions.
}
}
if (oRet != null && oRet.Timestamp == oFolder.Timestamp && strKey == oRet.Key)
return oRet;
return null;
}
/// <summary>
/// Get the root catalog hierarchy for a particular path
/// </summary>
/// <param name="oServer"></param>
/// <param name="oBounds"></param>
/// <param name="bAOIFilter"></param>
/// <param name="bTextFilter"></param>
/// <param name="strSearchString"></param>
/// <returns>The hierarchy as a CatalogFolder</returns>
internal CatalogFolder GetCatalogHierarchyRoot(Server oServer, BoundingBox oBounds, bool bAOIFilter, bool bTextFilter, string strSearchString, out bool bEntireCatalogMode, out string strEdition)
{
XmlDocument oDoc = null;
strEdition = "";
bEntireCatalogMode = false;
string strKey = oServer.Url;
if (bTextFilter)
strKey += "_" + strSearchString;
if (bAOIFilter)
strKey += "_" + oBounds.GetHashCode().ToString(CultureInfo.InvariantCulture);
string strFile = Path.Combine(oServer.CacheDir, strKey.GetHashCode().ToString(CultureInfo.InvariantCulture) + ".dap_cataloghierarchy.gz");
if (File.Exists(strFile))
{
try
{
// --- Use GZip compression to disk ---
using (Stream stream = new FileStream(strFile, FileMode.Open, FileAccess.Read, FileShare.Read))
{
using (GZipStream compStream = new GZipStream(stream, CompressionMode.Decompress))
{
oDoc = new XmlDocument();
oDoc.Load(compStream);
compStream.Close();
stream.Close();
CatalogFolder oCatalogFolder = CatalogFolder.Parse(oDoc, out strEdition);
if (oCatalogFolder != null && strEdition == oServer.CacheVersion)
return oCatalogFolder;
oDoc = null;
}
}
}
catch
{
oDoc = null;
if (File.Exists(strFile))
File.Delete(strFile);
}
}
if (oDoc == null)
{
try
{
if (!bAOIFilter && !bTextFilter)
oDoc = oServer.Command.GetCatalogHierarchy();
else if (!bAOIFilter && bTextFilter)
oDoc = oServer.Command.GetCatalogHierarchy(strSearchString);
else if (bAOIFilter && !bTextFilter)
oDoc = oServer.Command.GetCatalogHierarchy(oBounds);
else if (bAOIFilter && bTextFilter)
oDoc = oServer.Command.GetCatalogHierarchy(strSearchString, oBounds);
}
catch (DapException)
{
// Assume the server is older
bEntireCatalogMode = true;
return null;
}
catch
{
oDoc = null;
}
if (oDoc == null)
{
// --- do something to disable server ---
#if !DAPPLE
m_oServerTree.NoResponseError();
#else
if (m_oServerTree != null)
m_oServerTree.NoResponseError(oServer);
#endif
return null;
}
#if DAPPLE
// --- Looks like the server is online now ---
if (m_oServerTree != null)
m_oServerTree.ReenableServer(oServer);
#endif
CatalogFolder oCatalogFolder = CatalogFolder.Parse(oDoc, out strEdition);
if (oCatalogFolder == null)
{
// --- check to see if this is an unknown request ---
System.Xml.XmlNodeList oNodeList;
System.Xml.XmlNode oNode;
oNodeList = oDoc.SelectNodes("//" + Geosoft.Dap.Xml.Common.Constant.Tag.ERROR_TAG);
if (oNodeList != null && oNodeList.Count > 0)
{
oNode = oNodeList[0];
if (oNode != null && oNode.InnerText.ToLower() == "unknown request.")
bEntireCatalogMode = true;
}
}
else
{
if (strEdition != oServer.CacheVersion)
{
oServer.UpdateConfiguration();
return null;
}
try
{
if (File.Exists(strFile))
File.Delete(strFile);
// --- Use GZip compression to disk ---
using (Stream stream = new FileStream(strFile, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (GZipStream compStream = new GZipStream(stream, CompressionMode.Compress, true))
{
XmlWriter writer = XmlWriter.Create(compStream);
oDoc.Save(writer);
compStream.Close();
stream.Close();
}
}
}
catch
{
}
return oCatalogFolder;
}
}
return null;
}