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));
}
protected virtual int DoUpdate(Connector.Database db, Row row, IDataStoreKey key, FieldFilterFunc filter = null)
{
var doc = convertRowToBSONDocumentWith_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);
}
public static Query ID_EQ_String(string id)
{
if (id==null)
throw new MongoDBConnectorException(StringConsts.ARGUMENT_ERROR+"ID_EQ_String(id==null)");
var result = new Query();
result.Set( new BSONStringElement(_ID, id) );
return result;
}
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));
}
private void btnFetchOrderBy_Click(object sender, EventArgs e)
{
var c = MongoClient.Instance.DefaultLocalServer["db1"]["t1"];
var query = new Query(
@"{
'$query': {'_id': {'$lte': '$$ID'}},
'$orderby': {'age': '$$ORD'}
}",
true,
new TemplateArg("ID", BSONElementType.Int32, 197),
new TemplateArg("ORD", BSONElementType.Int32, -1)
);
var data = c.FindAndFetchAll(query, cursorFetchLimit: 4);
MessageBox.Show( "Got {0} \n=======================\n {1}".Args(data.Count, data.ToJSON(JSONWritingOptions.PrettyPrint)) );
}
protected virtual int DoDelete(Connector.Database db, Row row, IDataStoreKey key)
{
var doc = convertRowToBSONDocumentWith_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);
}
/// <summary>
/// Finds a document that satisfied query or null
/// </summary>
public BSONDocument FindOne(Query query, BSONDocument selector = null)
{
EnsureObjectNotDisposed();
if (query==null)
throw new MongoDBConnectorException(StringConsts.ARGUMENT_ERROR+"Collection.FindOne(query==null)");
var connection = Server.AcquireConnection();
try
{
var reqId = Database.NextRequestID;
return connection.FindOne(reqId, this, query, selector);
}
finally
{
connection.Release();
}
}
protected virtual int DoUpdate(Connector.Database db, Row row, IDataStoreKey key)
{
var doc = convertRowToBSONDocumentWith_ID(row, "update");
var tname = GetCollectionName(row.Schema);
var collection = db[tname];
var qry = new Connector.Query();
qry.Set(doc[Connector.Protocol._ID]);
var upd = new Connector.UpdateEntry(qry, doc, false, false);
var result = collection.Update(upd);
checkCRUDResult(result, row.Schema.Name, "update");
return(result.TotalDocumentsAffected);
}
public void AllocClient()
{
using(var client= new MongoClient("My Test"))
{
var server = client.DefaultLocalServer;
Assert.IsNotNull( server );
Assert.IsTrue( object.ReferenceEquals(server, client[server.Node]) );
var db = server["db1"];
Assert.IsNotNull( db );
Assert.IsTrue( object.ReferenceEquals(db, server[db.Name]) );
var collection = db["t1"];
Assert.IsNotNull( collection );
Assert.IsTrue( object.ReferenceEquals(collection, db[collection.Name]) );
var query = new Query();
var result = collection.FindOne( query );
}
}
/* 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));
}
private void btnFetch_Click(object sender, EventArgs e)
{
var c = MongoClient.Instance.DefaultLocalServer["db1"]["t1"];
var sw = new System.Diagnostics.Stopwatch();
var cnt = 0;
var query = new Query();
BSONDocument lastDoc = null;
using(var cursor = c.Find(query))
foreach(var doc in cursor)
{
cnt++;
if (cnt==1) sw.Start();
lastDoc = doc;
// if (cnt>3) break;
}
var el = sw.ElapsedMilliseconds;
Text = "Fetched {0} in {1} ms at {2}ops/sec".Args(cnt, el, cnt / (el / 1000d));
MessageBox.Show(lastDoc.ToString());
}
/// <summary>
/// Performs server-side count over cursor
/// </summary>
/// <param name="query">Optional. A query that selects which documents to count in a collection</param>
/// <param name="limit">Optional. The maximum number of matching documents to return</param>
/// <param name="skip">Optional. The number of matching documents to skip before returning results</param>
/// <param name="hint">Optional. The index to use. Specify either the index name as a string or the index specification document.</param>
/// <returns>Count </returns>
public long Count(Query query = null, int limit = -1, int skip = -1, object hint = null)
{ // See http://docs.mongodb.org/v3.0/reference/command/count/
EnsureObjectNotDisposed();
if (hint!=null && (!(hint is string)) && (!(hint is BSONDocument)))
throw new MongoDBConnectorException(StringConsts.ARGUMENT_ERROR+"Collection.Count(hint must be string | BSONDocument)");
var connection = Server.AcquireConnection();
try
{
var reqId = Database.NextRequestID;
return connection.Count(reqId, this, query, limit, skip, hint);
}
finally
{
connection.Release();
}
}
/// <summary>
/// Deletes 1 document from the server. Inspect CRUDResult for write errors and docs affected/matched
/// </summary>
public CRUDResult DeleteOne(Query query)
{
if (query==null)
throw new MongoDBConnectorException(StringConsts.ARGUMENT_ERROR+"Collection.DeleteOne(query==null)");
return this.Delete(new DeleteEntry(query, DeleteLimit.OnlyFirstMatch));
}
private void btnSave_Click(object sender, EventArgs e)
{
var c = MongoClient.Instance.DefaultLocalServer["db1"]["t1"];
var query = new Query("{'_id': '$$ID'}", true, new TemplateArg("ID", BSONElementType.Int32, 7));
var doc = c.FindOne(query);
doc["age"].ObjectValue = 777;
var result = c.Save(doc);
Text = "Affected: {0} Updated: {1}".Args(result.TotalDocumentsAffected, result.TotalDocumentsUpdatedAffected);
}
protected virtual int DoDelete(Connector.Database db, Row row, IDataStoreKey key)
{
var doc = convertRowToBSONDocumentWith_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;
}
internal Cursor Find(int requestID, Collection collection, Query query, BSONDocument selector, int skipCount, int fetchBy)
{
EnsureObjectNotDisposed();
if (fetchBy<=0) fetchBy = Cursor.DEFAULT_FETCH_BY;
m_BufferStream.Position = 0;
var total = Protocol.Write_QUERY(m_BufferStream,
requestID,
collection.Database,
collection,
Protocol.QueryFlags.None,
skipCount,
fetchBy,
query,
selector);
writeSocket(total);
var got = readSocket();
var reply = Protocol.Read_REPLY(got);
Protocol.CheckReplyDataForErrors(reply);
var result = new Cursor(reply.CursorID, collection, query, selector, reply.Documents){ FetchBy = fetchBy };
return result;
}
public static Query ID_EQ_BYTE_ARRAY(byte[] id)
{
var result = new Query();
result.Set( NFX.Serialization.BSON.RowConverter.ByteBufferID_CLRtoBSON(_ID, id) );
return result;
}
public static Int32 Write_COUNT(Stream stream,
Int32 requestID,
Collection collection,
Query query,
Int32 limit,
Int32 skip,
object hint)
{
var body = new BSONDocument();
body.Set( new BSONStringElement("count", collection.Name) );
if (query!=null) body.Set( new BSONDocumentElement("query", query) );
if (limit>0) body.Set( new BSONInt32Element("limit", limit) );
if (skip>0) body.Set( new BSONInt32Element("skip", limit) );
if (hint is string) body.Set( new BSONStringElement("hint", (string)hint) );
else
if (hint is BSONDocument) body.Set( new BSONDocumentElement("hint", (BSONDocument)hint) );
return Write_QUERY(stream, requestID, collection.Database, null, QueryFlags.None, 0, -1, body, null);
}
internal bool Delete(string table, byte[] key)
{
var db = MongoClient.DatabaseFromConnectString(EffectiveConnectionString);
return(db[table].DeleteOne(MongoQuery.ID_EQ_BYTE_ARRAY(key)).TotalDocumentsAffected > 0);
}
/// <summary>
/// Finds all documents that match the supplied query, optionally skipping some.
/// Fetches and returns all documents as a list. Be careful not to fetch too many
/// </summary>
/// <param name="query">Query to match against</param>
/// <param name="skipCount">How many documents to skip at the beginning</param>
/// <param name="cursorFetchLimit">Impose a limit on total number of fetched docs</param>
/// <param name="fetchBy">Size of fetch block</param>
/// <param name="selector">Optional field mapping document like: {"field_name": 1}</param>
/// <returns>A list of documents (may be empty)</returns>
public List<BSONDocument> FindAndFetchAll(Query query, int skipCount = 0, int cursorFetchLimit = 0, int fetchBy = 0, BSONDocument selector = null)
{
var result = new List<BSONDocument>();
using(var cursor = this.Find(query, skipCount, fetchBy, selector))
foreach(var doc in cursor)
if (cursorFetchLimit<=0 || result.Count<cursorFetchLimit)
result.Add(doc);
else
break;
return result;
}
internal long Count(int requestID, Collection collection, Query query = null, int limit = -1, int skip = -1, object hint = null)
{
EnsureObjectNotDisposed();
m_BufferStream.Position = 0;
var total = Protocol.Write_COUNT(m_BufferStream,
requestID,
collection,
query,
limit,
skip,
hint);
writeSocket(total);
var got = readSocket();
var reply = Protocol.Read_REPLY(got);
Protocol.CheckReplyDataForErrors(reply);
if (Protocol.IsOKReplyDoc(reply))
{
return reply.Documents[0]["n"].AsLong();
}
throw new MongoDBConnectorProtocolException(StringConsts.PROTO_COUNT_REPLY_ERROR);
}
protected virtual int DoUpdate(Connector.Database db, Row row, IDataStoreKey key, FieldFilterFunc filter = null)
{
var doc = convertRowToBSONDocumentWith_ID(row, "update", filter);
var _id = doc[Connector.Protocol._ID];
//20160212 spol
if (filter != null)
{
doc.Delete(Connector.Protocol._ID);
if (doc.Count == 0) return 0; // nothing to update
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;
}
protected virtual int DoUpdate(Connector.Database db, Row row, IDataStoreKey key)
{
var doc = convertRowToBSONDocumentWith_ID(row, "update");
var tname = GetCollectionName(row.Schema);
var collection = db[tname];
var qry = new Connector.Query();
qry.Set( doc[Connector.Protocol._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 BSONDocument FindOne(int requestID, Collection collection, Query query, BSONDocument selector)
{
EnsureObjectNotDisposed();
m_BufferStream.Position = 0;
var total = Protocol.Write_QUERY(m_BufferStream,
requestID,
collection.Database,
collection,
Protocol.QueryFlags.None,
0,
-1,// If the number is negative, then the database will return that number and close the cursor.
// No futher results for that query can be fetched. If numberToReturn is 1 the server will treat it as -1
//(closing the cursor automatically).
query,
selector);
writeSocket(total);
var got = readSocket();
var reply = Protocol.Read_REPLY(got);
Protocol.CheckReplyDataForErrors(reply);
var result = reply.Documents!=null && reply.Documents.Length>0 ? reply.Documents[0] : null;
return result;
}
public static Query ID_EQ_Int32(Int64 id)
{
var result = new Query();
result.Set( new BSONInt64Element(_ID, id) );
return result;
}
private void btnOpenCursors_Click(object sender, EventArgs e)
{
var c = MongoClient.Instance.DefaultLocalServer["db1"]["t1"];
var query = new Query();
for(var i=0; i<10; i++)
c.Find(query);
}
public static Query ID_EQ_GDID(GDID id)
{
var result = new Query();
result.Set( NFX.Serialization.BSON.RowConverter.GDID_CLRtoBSON(_ID, id) );
return result;
}
private void btnQuery_Click(object sender, EventArgs e)
{
var qry = new Query("{'$and': [{lastName: {'$ge': '$$ln'}}, {firstName: {'$ge': '$$fn'}}], kaka: true}", true,
new TemplateArg("fn", BSONElementType.String, "Dima"),
new TemplateArg("ln", BSONElementType.String, "Kozlevich")
);
MessageBox.Show( qry.ToString() );
}
