private IScalar LoadWithCache(string document, IServerProcess process)
{
IScalar result = null;
lock (Cache)
{
uint cRC32 = Cache.GetCRC32(document);
if (cRC32 > 0)
{
try
{
result = LoadFromCache(document, process);
}
catch
{
result = null;
cRC32 = 0;
}
}
using
(
DAE.Runtime.Data.Row row = (DAE.Runtime.Data.Row)process.Evaluate
(
String.Format
(
"LoadIfNecessary('{0}', {1})",
document.Replace("'", "''"),
((int)cRC32).ToString()
),
null
)
)
if (!(bool)row["CRCMatches"])
{
using (DAE.Runtime.Data.Scalar value = row.GetValue("Value") as DAE.Runtime.Data.Scalar)
{
SaveToCache(document, process, value, (uint)(int)row["ActualCRC32"]);
result = (DAE.Runtime.Data.Scalar)value.Copy();
}
}
}
return(result);
}
private IScalar InternalRequest(string document, IServerProcess process)
{
bool isImageRequest = false;
if (ImageCache != null)
{
isImageRequest = IsImageRequest(document);
if (isImageRequest)
{
lock (ImageCache)
{
byte[] data;
if (ImageCache.TryGetValue(document, out data))
{
return(new Scalar(process.ValueManager, process.DataTypes.SystemGraphic, data));
}
}
}
}
IScalar result;
if (Cache != null)
{
result = LoadWithCache(document, process);
}
else
{
result = (IScalar)process.Evaluate(document, null);
}
if (isImageRequest)
{
SaveToImageCache(document, process, result);
}
return(result);
}
