protected string BuildResult(bool key)
{
var result = new StringBuilder();
var prefix = "?";
if (SubBuilder)
{
result.Append("$expand=");
prefix = "&";
}
result.Append(base.BuildResult());
var options = BuildOptionsResult(prefix, key);
if (!string.IsNullOrWhiteSpace(options))
{
if (!CompareUtilities.IsDefault(Key))
{
throw new ArgumentException($"{Filter} may only be used on collections. {nameof(Key)} is already applied.");
}
if (SubBuilder)
{
result.Append("(");
}
result.Append(options);
if (SubBuilder)
{
result.Append(")");
}
prefix = "&";
}
if (SubEntity != null)
{
result.Append(prefix);
result.Append(SubEntity.Build());
}
return(result.ToString());
}
/// <summary>
/// Reduce number of entries in <see cref="settings"/> based on <see cref="IHistorySettings"/>.
/// </summary>
/// <typeparam name="TValue"></typeparam>
/// <param name="settings"></param>
/// <param name="values"></param>
/// <param name="anomalies"></param>
/// <param name="referenceDate"></param>
/// <returns></returns>
internal static long ReduceValues <TValue>(
this IHistorySettings settings,
ConcurrentDictionary <DateTimeOffset, TValue> values,
ConcurrentBag <TValue> anomalies,
DateTimeOffset referenceDate)
{
long result = 0;
var oldestValue = values.Keys.OrderBy(x => x).FirstOrDefault();
while (!anomalies.IsEmpty)
{
if (!anomalies.TryTake(out var _))
{
return(result++);
}
}
if (settings.PreserveTimeSpan > TimeSpan.Zero)
{
var preserveDate = referenceDate - settings.PreserveTimeSpan;
while (!CompareUtilities.IsDefault(oldestValue) && oldestValue < preserveDate)
{
values.TryRemove(oldestValue, out _);
oldestValue = values.Keys.OrderBy(x => x).FirstOrDefault();
result++;
}
return(result);
}
while (!CompareUtilities.IsDefault(oldestValue) && values.Keys.Count > settings.PreserveCount)
{
if (!values.TryRemove(oldestValue, out _))
{
return(result);
}
oldestValue = values.Keys.OrderBy(x => x).FirstOrDefault();
result++;
}
return(result);
}
protected override string BuildResult()
{
var result = new StringBuilder();
result.Append(Entity.ToLowerInvariant());
if (!CompareUtilities.IsDefault(Key))
{
if (SubBuilder)
{
throw new ArgumentException($"Expand can not be used with {nameof(Key)}.");
}
result
.Append("(")
.Append(StringKey)
.Append(")");
}
return(result.ToString());
}
