ノーコードでクラウド上のデータとの連携を実現。
詳細はこちら →
HDFS FireDAC Component を使えば、Delphi & C++ Builder アプリケーションからHDFS データに簡単に連携できます。 Rapidly create and deploy powerful Delphi & C++Builder Apps that integrate with HDFS.
機能紹介
- SQL access to Hadoop Distributed File System data
- Use SQL Stored Procedures to perform actions like creating files, appending data, setting permission, and more
- Connect to live Apache HDFS data, for real-time data access
- Full support for data aggregation and complex JOINs in SQL queries
- Generate table schema automatically based on existing Apache HDFS data or manually for greater control of the content you need
Specifications
- Native FireDAC Components for HDFS seamlessly integrate with RAD Studio
- 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 := 'HDFSConnection';
FDConnection1.DriverName := 'CData.Fire.HDFS';
with FDConnection1.Params as
TFDPhysCDataHDFSConnectionDefParams do begin
...
end;
FDConnection1.Connected := true;
FDQuery1.Active := true;
FDQuery1.Open('select * from HDFSData');
...
Type SQL, Get HDFS
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、HDFS 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 HDFSData.Id, HDFSData.Name, HDFSData.Fax, Opportunity.AccountId, Opportunity.CloseDate FROM HDFSData INNER JOIN Opportunity ON HDFSData.Id = Opportunity.AccountId
集計関数
SELECT Name, AVG(AnnualRevenue) FROM HDFSData GROUP BY Name
CRUD 処理
UPDATE HDFSData SET Name='John' WHERE Id = @myId