public bool Initialize(DatabaseContext _dbContext, CollectionConfiguration config)
{
//eviction is always enabled for now and can not be turned off.
_isEvictionEnabled = true;
if (_parent.CollectionConfiguration.EvictionConfiguration != null) //TODO this check is added if eviction configuration is not available at collection level in db.config
{
//_isEvictionEnabled = _parent.CollectionConfiguration.EvictionConfiguration.EnabledEviction;
if (_parent.CollectionConfiguration.EvictionConfiguration.Policy.ToLower() == "lru")
{
_evictionPolicy = new LRUEvictionPolicy(_parent.DbContext.StatsIdentity);
}
}
else
{
_evictionPolicy = new LRUEvictionPolicy(_parent.DbContext.StatsIdentity);
}
_persistenceManager = _parent.DbContext.PersistenceManager;
_persistenceManager.AddMetadataIndex(_parent.Name, _parent.MetadataIndex);
_indexManager = new CollectionIndexManager(_dbContext, _dbContext.IndexPersistanceManager, this, config.CollectionName);
if (!_indexManager.Initialize(config.Indices))
{
return(false);
}
//if (_statsCollector != null)
// _statsCollector.SetStatsValue(StatisticsType.PendingPersistentDocuments, _dirtyDocuments.Count);
if (_persistenceManager == null)
{
return(false);
}
return(true);
}
public CostBasedOptimizer(CollectionIndexManager indexManager)
{
_indexManager = indexManager;
_predicateCache = new LightCache <ITreePredicate, IPredicate>();
}