/// <summary>
/// Ctor.
/// </summary>
/// <param name="maxAgeSec">is the maximum age in seconds</param>
/// <param name="purgeIntervalSec">is the purge interval in seconds</param>
/// <param name="cacheReferenceType">indicates whether hard, soft or weak references are used in the cache</param>
/// <param name="schedulingService">is a service for call backs at a scheduled time, for purging</param>
/// <param name="scheduleSlot">slot for scheduling callbacks for this cache</param>
/// <param name="epStatementAgentInstanceHandle">is the statements-own handle for use in registering callbacks with services</param>
/// <param name="timeAbacus">time abacus</param>
public DataCacheExpiringImpl(
double maxAgeSec,
double purgeIntervalSec,
ConfigurationCacheReferenceType cacheReferenceType,
SchedulingService schedulingService,
long scheduleSlot,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
TimeAbacus timeAbacus)
{
_maxAgeSec = maxAgeSec;
_purgeIntervalSec = purgeIntervalSec;
_schedulingService = schedulingService;
_scheduleSlot = scheduleSlot;
_timeAbacus = timeAbacus;
if (cacheReferenceType == ConfigurationCacheReferenceType.HARD)
{
_cache = new Dictionary <Object, Item>();
}
else if (cacheReferenceType == ConfigurationCacheReferenceType.SOFT)
{
_cache = new ReferenceMap <Object, Item>(ReferenceType.SOFT, ReferenceType.SOFT);
}
else
{
_cache = new WeakDictionary <Object, Item>();
}
_epStatementAgentInstanceHandle = epStatementAgentInstanceHandle;
}
/// <summary>Ctor. </summary>
/// <param name="maxAgeSec">is the maximum age in seconds</param>
/// <param name="purgeIntervalSec">is the purge interval in seconds</param>
/// <param name="cacheReferenceType">indicates whether hard, soft or weak references are used in the cache</param>
/// <param name="schedulingService">is a service for call backs at a scheduled time, for purging</param>
/// <param name="scheduleSlot">slot for scheduling callbacks for this cache</param>
/// <param name="epStatementAgentInstanceHandle">is the statements-own handle for use in registering callbacks with services</param>
public DataCacheExpiringImpl(double maxAgeSec,
double purgeIntervalSec,
ConfigurationCacheReferenceType cacheReferenceType,
SchedulingService schedulingService,
long scheduleSlot,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle)
{
MaxAgeMSec = (long)maxAgeSec * 1000;
PurgeIntervalMSec = (long)purgeIntervalSec * 1000;
_schedulingService = schedulingService;
_scheduleSlot = scheduleSlot;
if (cacheReferenceType == ConfigurationCacheReferenceType.HARD)
{
_cache = new Dictionary <Object, Item>();
}
else if (cacheReferenceType == ConfigurationCacheReferenceType.SOFT)
{
_cache = new ReferenceMap <Object, Item>(ReferenceType.SOFT, ReferenceType.SOFT);
}
else
{
_cache = new WeakDictionary <Object, Item>();
}
_epStatementAgentInstanceHandle = epStatementAgentInstanceHandle;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="maxAgeSeconds">is the maximum age in seconds</param>
/// <param name="purgeIntervalSeconds">is the purge interval</param>
/// <param name="configurationCacheReferenceType">cacheReferenceType the reference type may allow garbage collection to remove entries from
/// cache unless HARD reference type indicates otherwise</param>
public ExpiryTimeCacheDesc(double maxAgeSeconds, double purgeIntervalSeconds, ConfigurationCacheReferenceType configurationCacheReferenceType)
{
MaxAgeSeconds = maxAgeSeconds;
PurgeIntervalSeconds = purgeIntervalSeconds;
ConfigurationCacheReferenceType = configurationCacheReferenceType;
}
/// <summary>
/// Configures an expiry-time cache of the given maximum age in seconds and purge interval in seconds. Also allows
/// setting the reference type indicating whether garbage collection may remove entries from cache.
/// </summary>
/// <param name="maxAgeSeconds">the maximum number of seconds before a query result is considered stale (also known as time-to-live)</param>
/// <param name="purgeIntervalSeconds">the interval at which the engine purges stale data from the cache.</param>
/// <param name="cacheReferenceType">specifies the reference type to use</param>
public virtual void SetExpiryTimeCache(double maxAgeSeconds, double purgeIntervalSeconds, ConfigurationCacheReferenceType cacheReferenceType)
{
dataCacheDesc = new ConfigurationExpiryTimeCache(maxAgeSeconds, purgeIntervalSeconds, cacheReferenceType);
}
/// <summary>Ctor. </summary>
/// <param name="maxAgeSeconds">is the maximum age in seconds</param>
/// <param name="purgeIntervalSeconds">is the purge interval</param>
/// <param name="cacheReferenceType">the reference type may allow garbage collection to remove entries fromcache unless HARD reference type indicates otherwise </param>
public ConfigurationExpiryTimeCache(double maxAgeSeconds, double purgeIntervalSeconds, ConfigurationCacheReferenceType cacheReferenceType)
{
this.maxAgeSeconds = maxAgeSeconds;
this.purgeIntervalSeconds = purgeIntervalSeconds;
this.cacheReferenceType = cacheReferenceType;
}
