private void WriteResultsIgnoringError <T>(string prefix, QueryCriteria query, CachedResult <T>[] results)
{
if (prefix == null)
{
throw new ArgumentNullException(nameof(prefix));
}
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
if (results == null)
{
throw new ArgumentNullException(nameof(results));
}
try
{
var cacheFile = GetCacheFile(prefix, query.GetHashCode());
cacheFile.Directory.Create();
using (var stream = cacheFile.OpenWrite())
{
(new BinaryFormatter()).Serialize(stream, results);
}
}
catch (Exception e)
{
_errorLogger(e);
}
}
protected override byte[] DataSetRetriever(QueryCriteria query)
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
var result = GetCachedResultsIgnoringError <byte[]>(PREFIX_DATASET, query.GetHashCode())
.FirstOrDefault(cachedResult => cachedResult.Query.Equals(query));
return((result == null) ? null : result.Value);
}
protected override int?RowCountRetriever(QueryCriteria query)
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
var result = GetCachedResultsIgnoringError <int>(PREFIX_ROWCOUNT, query.GetHashCode())
.FirstOrDefault(cachedResult => cachedResult.Query.Equals(query));
return((result == null) ? (int?)null : result.Value);
}
protected override Tuple <object> ScalarRetriever(QueryCriteria query)
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
var result = GetCachedResultsIgnoringError <object>(PREFIX_SCALAR, query.GetHashCode())
.FirstOrDefault(cachedResult => cachedResult.Query.Equals(query));
return((result == null) ? null : Tuple.Create(result.Value));
}
private CachedResult <T>[] SetInCachedResults <T>(string prefix, QueryCriteria query, T data)
{
if (prefix == null)
{
throw new ArgumentNullException(nameof(prefix));
}
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
var hashCode = query.GetHashCode();
return(GetCachedResultsIgnoringError <T>(prefix, hashCode)
.Where(result => !result.Query.Equals(query))
.Concat(new[] { new CachedResult <T>(query, data) })
.ToArray());
}
