protected virtual int DoUpdate(Connector.Database db, Doc row, IDataStoreKey key, FieldFilterFunc filter = null)
{
var doc = convertDocToBSONDocumentWith_ID(row, "update", filter);
var _id = doc[Connector.Protocol._ID];
doc.Delete(Connector.Protocol._ID);
if (doc.Count == 0)
{
return(0); // nothing to update
}
//20160212 spol
if (filter != null)
{
var wrapDoc = new BSONDocument();
wrapDoc.Set(new BSONDocumentElement(Connector.Protocol.SET, doc));
doc = wrapDoc;
}
var tname = GetCollectionName(row.Schema);
var collection = db[tname];
var qry = new Connector.Query();
qry.Set(_id);
var upd = new Connector.UpdateEntry(qry, doc, false, false);
var result = collection.Update(upd);
CheckCRUDResult(result, row.Schema.Name, "update");
return(result.TotalDocumentsAffected);
}
internal bool Delete(string table, byte[] key)
{
//todo: Why do we obtain ref to db every time, need to consider cache for speed
var db = App.GetMongoDatabaseFromConnectString(EffectiveConnectionString);
return(db[table].DeleteOne(MongoQuery.ID_EQ_BYTE_ARRAY(key)).TotalDocumentsAffected > 0);
}
internal KdbRecord <byte[]> GetRaw(string table, byte[] key)
{
var db = App.GetMongoDatabaseFromConnectString(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)
{
//todo: Why do we obtain ref to db every time, need to consider cache for speed
var db = App.GetMongoDatabaseFromConnectString(EffectiveConnectionString);
var udoc = new BSONDocument()
.Set(new BSONDateTimeElement(FIELD_LAST_USE_DATE, App.TimeSource.UTCNow));
//Need to 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));
}
protected virtual int DoDelete(Connector.Database db, Doc row, IDataStoreKey key)
{
var doc = convertDocToBSONDocumentWith_ID(row, "delete");
var tname = GetCollectionName(row.Schema);
var collection = db[tname];
var qry = new Connector.Query();
qry.Set(doc[Connector.Protocol._ID]);
var result = collection.Delete(new Connector.DeleteEntry(qry, Connector.DeleteLimit.OnlyFirstMatch));
CheckCRUDResult(result, row.Schema.Name, "delete");
return(result.TotalDocumentsAffected);
}
/* 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 <TDoc> Get <TDoc>(string table, byte[] key) where TDoc : Doc
{
var db = App.GetMongoDatabaseFromConnectString(EffectiveConnectionString);
var doc = db[table].FindOne(MongoQuery.ID_EQ_BYTE_ARRAY(key));
if (doc == null)
{
return(KdbRecord <TDoc> .Unassigned);
}
var elmValue = doc[FIELD_VALUE] as BSONDocumentElement;
if (elmValue == null)
{
return(KdbRecord <TDoc> .Unassigned);
}
DateTime lastUseDate;
DateTime?absoluteExpirationDateUTC;
int slidingExpirationDays;
readAttrs(table, doc, out lastUseDate, out absoluteExpirationDateUTC, out slidingExpirationDays);
var value = elmValue.Value;
TDoc row;
if (value == null)
{
row = Doc.MakeDoc(new Schema(Guid.NewGuid().ToString()), typeof(TDoc)) as TDoc;
}
else
{
var schema = Store.m_Converter.InferSchemaFromBSONDocument(value);
row = Doc.MakeDoc(schema, typeof(TDoc)) as TDoc;
Store.m_Converter.BSONDocumentToDataDoc(value, row, null);
}
return(new KdbRecord <TDoc>(row, slidingExpirationDays, lastUseDate, absoluteExpirationDateUTC));
}