Cassandra
 

Cassandra FireDAC Components

Delphi & C++Builder アプリの外部データ接続機能を拡張!

Delphi とC++ Builder アプリをApache Cassandra にリアルタイム接続。簡単かつ高速です。


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Cassandra FireDAC Component を使えば、Delphi & C++ Builder アプリケーションからCassandra データに簡単に連携できます。 Connect Delphi & C++Builder Apps with the Cassandra real-time NoSQL cloud database service. Use Apache Cassandra as the big data backend that powers your Delphi & C++Builder Apps.

機能紹介

  • Cassandra 2.0 through 3.0 Compatibility – Leverages the faster performance and improved security of Cassandra V3.0.
  • CQL Pass-through Capability – Delivers native CQL3 or CQL2 data access to clustered Cassandra data, enabling users to create queries in CQL or SQL
  • Enables SQL-92 capabilities on Apache Cassandra NoSQL data.
  • Flexible NoSQL flattening - automatic schema generation, flexible querying etc.
  • Connect to live Apache Cassandra data, for real-time data access
  • Full support for data aggregation and complex JOINs in SQL queries

Specifications

  • Native FireDAC Components for Cassandra seamlessly integrate with RAD Studio
  • Comprehensive support for CRUD (Create, Read, Update, & Delete)
  • Full Unicode support for data, parameter, & metadata
  • Support for 32-bit & 64-bit operating systems
  • Requires Delphi, C++ Builder, or RAD Studio 10.2 Professional or higher


AVAILABLE IN:
FireDAC SUBSCRIPTIONS
225+ FireDAC Drivers For Real-Time Data Access
詳細

FireDAC Components

あらゆるデータソースにRDB と同感覚で連携が可能に



標準FireDAC Components


MySQL やSQL Server のようなRDBMS への接続と同感覚。 TDFManager、TDFConnection、TDFQueryUse といった標準FireDAC components として。


	FDConnection1.Name := 'CassandraConnection';
	FDConnection1.DriverName := 'CData.Fire.Cassandra';
	with FDConnection1.Params as
	    TFDPhysCDataCassandraConnectionDefParams do begin

	    ...
	end;


	FDConnection1.Connected := true;
	FDQuery1.Active := true;
	FDQuery1.Open('select * from CQL Queries');

	...

	

Type SQL, Get Cassandra


データ連携アプリケーションを開発する最適解。 RDBMS の扱いと同感覚で、Cassandra への連携を、標準SQL で実装可能。JOIN、更新系、集計など多彩なSQL サポート。

SELECT WITH INNER JOIN

	SELECT CQL Queries.Id, CQL Queries.Name, CQL Queries.Fax,
	  Opportunity.AccountId, Opportunity.CloseDate
	FROM CQL Queries
	INNER JOIN Opportunity
	  ON CQL Queries.Id = Opportunity.AccountId
	

集計関数

	SELECT Name, AVG(AnnualRevenue) FROM CQL Queries GROUP BY Name
	

CRUD 処理

	UPDATE CQL Queries SET Name='John' WHERE Id = @myId
	


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