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Simplified caching in TileImageLoader, FileDbCache deletes expired items on creation, TileLayers collection moved to Window resources in SampleApplication.

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ClemensF 2012-08-13 19:16:59 +02:00
parent fbeb01fca3
commit ae4fb7881a
7 changed files with 126 additions and 153 deletions
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36
Caching/FileDbCache/FileDbCache.cs
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@ -56,14 +56,14 @@ namespace Caching
public FileDbCache(string name, string directory)
{
if (string.IsNullOrEmpty(name))
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentException("The parameter name must not be null or empty.");
throw new ArgumentException("The parameter name must not be null or empty or only white-space.");
}
if (string.IsNullOrEmpty(directory))
if (string.IsNullOrWhiteSpace(directory))
{
throw new ArgumentException("The parameter directory must not be null or empty.");
throw new ArgumentException("The parameter directory must not be null or empty or only white-space.");
}
this.name = name;
@ -78,6 +78,14 @@ namespace Caching
{
fileDb.Open(path, false);
Trace.TraceInformation("FileDbCache: Opened database with {0} cached items in {1}", fileDb.NumRecords, path);
fileDb.DeleteRecords(new FilterExpression(expiresField, DateTime.UtcNow, EqualityEnum.LessThan));
if (fileDb.NumDeleted > 0)
{
Trace.TraceInformation("FileDbCache: Deleted {0} expired items", fileDb.NumDeleted);
fileDb.Clean();
}
}
catch
{
@ -372,7 +380,10 @@ namespace Caching
{
try
{
fileDb.Flush();
if (fileDb.IsOpen)
{
fileDb.Flush();
}
}
catch (Exception ex)
{
@ -384,7 +395,10 @@ namespace Caching
{
try
{
fileDb.Clean();
if (fileDb.IsOpen)
{
fileDb.Clean();
}
}
catch (Exception ex)
{
@ -396,16 +410,6 @@ namespace Caching
{
if (fileDb.IsOpen)
{
try
{
fileDb.DeleteRecords(new FilterExpression(expiresField, DateTime.UtcNow, EqualityEnum.LessThanOrEqual));
Trace.TraceInformation("FileDbCache: Deleted {0} expired items", fileDb.NumDeleted);
fileDb.Clean();
}
catch
{
}
fileDb.Close();
}
}