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 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);
}
