internal KDBRecord <byte[]> GetRaw(string table, byte[] key)
{
var db = MongoClient.DatabaseFromConnectString(EffectiveConnectionString);
var doc = db[table].FindOne(MongoQuery.ID_EQ_BYTE_ARRAY(key));
if (doc == null)
{
return(KDBRecord <byte[]> .Unassigned);
}
var elmValue = doc[FIELD_VALUE] as BSONBinaryElement;
if (elmValue == null)
{
return(KDBRecord <byte[]> .Unassigned);
}
DateTime lastUseDate;
DateTime?absoluteExpirationDateUTC;
int slidingExpirationDays;
readAttrs(table, doc, out lastUseDate, out absoluteExpirationDateUTC, out slidingExpirationDays);
var value = elmValue.Value;
return(new KDBRecord <byte[]>(value.Data, slidingExpirationDays, lastUseDate, absoluteExpirationDateUTC));
}
internal void Touch(string table, byte[] key)
{
var db = MongoClient.DatabaseFromConnectString(EffectiveConnectionString);
var udoc = new BSONDocument()
.Set(new BSONDateTimeElement(FIELD_LAST_USE_DATE, App.TimeSource.UTCNow));
// 20170404 spol: update document with $set to prevent document clear
udoc = new BSONDocument()
.Set(new BSONDocumentElement("$set", udoc));
db[table].Update(new UpdateEntry(MongoQuery.ID_EQ_BYTE_ARRAY(key), udoc, multi: false, upsert: false));
}
/* BSON Document Schema:
* ----------------
*
* {_id: key, v: {}|binary, lastUseDate: dateUTC, absoluteExpirationDateUTC: date|null, slidingExpirationDays: int|null}
* actual field names:
* {_id: key, v: {}|binary, d: dateUTC, a: date|null, s: int|null}
*/
internal KDBRecord <TRow> Get <TRow>(string table, byte[] key) where TRow : Row
{
var db = MongoClient.DatabaseFromConnectString(EffectiveConnectionString);
var doc = db[table].FindOne(MongoQuery.ID_EQ_BYTE_ARRAY(key));
if (doc == null)
{
return(KDBRecord <TRow> .Unassigned);
}
var elmValue = doc[FIELD_VALUE] as BSONDocumentElement;
if (elmValue == null)
{
return(KDBRecord <TRow> .Unassigned);
}
DateTime lastUseDate;
DateTime?absoluteExpirationDateUTC;
int slidingExpirationDays;
readAttrs(table, doc, out lastUseDate, out absoluteExpirationDateUTC, out slidingExpirationDays);
var value = elmValue.Value;
TRow row;
if (value == null)
{
row = Row.MakeRow(new Schema(Guid.NewGuid().ToString()), typeof(TRow)) as TRow;
}
else
{
var schema = Store.m_Converter.InferSchemaFromBSONDocument(value);
row = Row.MakeRow(schema, typeof(TRow)) as TRow;
Store.m_Converter.BSONDocumentToRow(value, row, null);
}
return(new KDBRecord <TRow>(row, slidingExpirationDays, lastUseDate, absoluteExpirationDateUTC));
}
internal bool Delete(string table, byte[] key)
{
var db = MongoClient.DatabaseFromConnectString(EffectiveConnectionString);
return(db[table].DeleteOne(MongoQuery.ID_EQ_BYTE_ARRAY(key)).TotalDocumentsAffected > 0);
}
