/// <summary>
/// Creates a cache implementation for the strategy as defined by the cache descriptor.
/// </summary>
/// <param name="cacheDesc">cache descriptor</param>
/// <param name="epStatementAgentInstanceHandle">statement handle for timer invocations</param>
/// <param name="schedulingService">scheduling service for time-based caches</param>
/// <param name="scheduleBucket">for ordered timer invokation</param>
/// <param name="statementContext">statement context</param>
/// <param name="streamNum">stream number</param>
/// <returns>data cache implementation</returns>
public DataCache GetDataCache(ConfigurationDataCache cacheDesc,
StatementContext statementContext,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
int streamNum)
{
if (cacheDesc == null)
{
return(new DataCacheNullImpl());
}
if (cacheDesc is ConfigurationLRUCache)
{
ConfigurationLRUCache lruCache = (ConfigurationLRUCache)cacheDesc;
return(new DataCacheLRUImpl(lruCache.Size));
}
if (cacheDesc is ConfigurationExpiryTimeCache)
{
ConfigurationExpiryTimeCache expCache = (ConfigurationExpiryTimeCache)cacheDesc;
return(MakeTimeCache(expCache, statementContext, epStatementAgentInstanceHandle, schedulingService, scheduleBucket, streamNum));
}
throw new IllegalStateException("Cache implementation class not configured");
}
/// <summary>Creates a cache implementation for the strategy as defined by the cache descriptor. </summary>
/// <param name="cacheDesc">cache descriptor</param>
/// <param name="epStatementAgentInstanceHandle">statement handle for timer invocations</param>
/// <param name="schedulingService">scheduling service for time-based caches</param>
/// <param name="scheduleBucket">for ordered timer invokation</param>
/// <returns>data cache implementation</returns>
public static DataCache GetDataCache(ConfigurationDataCache cacheDesc,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket)
{
if (cacheDesc == null)
{
return(new DataCacheNullImpl());
}
if (cacheDesc is ConfigurationLRUCache)
{
ConfigurationLRUCache lruCache = (ConfigurationLRUCache)cacheDesc;
return(new DataCacheLRUImpl(lruCache.Size));
}
if (cacheDesc is ConfigurationExpiryTimeCache)
{
ConfigurationExpiryTimeCache expCache = (ConfigurationExpiryTimeCache)cacheDesc;
return(new DataCacheExpiringImpl(expCache.MaxAgeSeconds, expCache.PurgeIntervalSeconds, expCache.CacheReferenceType,
schedulingService, scheduleBucket.AllocateSlot(), epStatementAgentInstanceHandle));
}
throw new IllegalStateException("Cache implementation class not configured");
}
