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Oracle Data Integrator ETL からCSV データ連携

この記事では、Oracle Data Integratorを使用してCSV data をデータウェアハウスに転送する方法を説明します。

CSV への接続にJDBC 標準を使用して既存のスキルを活用します。 CData JDBC Driver for CSV は、Oracle Data Integrator(ODI)などのETL ツールへの統合によって、リアルタイムのCSV data をデータウェアハウス、ビジネスインテリジェンス、およびビッグデータテクノロジに連携します。

JDBC 接続を使用すると、ODI 内の他のデータベースと同じようにCSV を使用できます。RDBMS やフラットファイルを使用する代わりに、ドライバーを使用してリアルタイムでCSV API に直接連携できます。

ここでは、JDBC を利用したCSV - Oracle のETL 連携を行います。CSV エンティティのデータモデルをリバースエンジニアリングした後、マッピングを作成してだdata loading strategy を選択します。ドライバーはSQL-92 をサポートしているため、この最後の手順は組み込みSQL からSQL Loading を選択することで簡単に行えます。

ドライバーをインストール

To install the driver, copy the driver JAR and .lic file, located in the installation folder, into the ODI userlib directory:

On Unix: ~/.odi/oracledi/userlib On Windows: %APPDATA%\Roaming\odi\oracledi\userlib

Restart ODI to complete the installation.

モデルのリバースエンジニアリング

Reverse engineering the model retrieves metadata about the driver's relational view of CSV data.After reverse engineering, you can query real-time CSV data and create mappings based on CSV tables.

  1. In ODI, connect to your repository and click New -> Model and Topology Objects.
  2. On the Model screen of the resulting dialog, enter the following information:
    • Name:Enter CSV.
    • Technology:Select Generic SQL.
    • Logical Schema:Enter CSV.
    • Context:Select Global.
  3. On the Data Server screen of the resulting dialog, enter the following information:
    • Name:Enter CSV.
    • Driver List:Select Oracle JDBC Driver.
    • Driver:Enter cdata.jdbc.csv.CSVDriver
    • URL:Enter the JDBC URL containing the connection string.

      The DataSource property must be set to a valid local folder name.

      Also, specify the IncludeFiles property to work with text files having extensions that differ from .csv, .tab, or .txt. Specify multiple file extensions in a comma-separated list. You can also set Extended Properties compatible with the Microsoft Jet OLE DB 4.0 driver. Alternatively, you can provide the format of text files in a Schema.ini file.

      Set UseRowNumbers to true if you are deleting or updating in CSV. This will create a new column with the name RowNumber which will be used as key for that table.

      ビルトイン接続文字列デザイナー

      For assistance in constructing the JDBC URL, use the connection string designer built into the CSV JDBC Driver.Either double-click the JAR file or execute the jar file from the command-line.

      java -jar cdata.jdbc.csv.jar

      Fill in the connection properties and copy the connection string to the clipboard.

      Below is a typical connection string:

      jdbc:csv:DataSource=MyCSVFilesFolder;
  4. On the Physical Schema screen, enter the following information:
    • Schema (Schema):Enter CSV.
    • Schema (Work Schema):Enter CSV.
  5. In the opened model click Reverse Engineer to retrieve the metadata for CSV tables.

CSV Data を編集して保存

After reverse engineering you can now work with CSV data in ODI. To view CSV data, expand the Models accordion in the Designer navigator, right-click a table, and click View data.

ETL プロジェクトを作成

Follow the steps below to create an ETL from CSV.You will load Customer entities into the sample data warehouse included in the ODI Getting Started VM.

  1. Open SQL Developer and connect to your Oracle database.Right-click the node for your database in the Connections pane and click new SQL Worksheet.

    Alternatively you can use SQLPlus.From a command prompt enter the following:

    sqlplus / as sysdba
  2. Enter the following query to create a new target table in the sample data warehouse, which is in the ODI_DEMO schema.The following query defines a few columns that match the Customer table in CSV: CREATE TABLE ODI_DEMO.TRG_CUSTOMER (TOTALDUE NUMBER(20,0),City VARCHAR2(255));
  3. In ODI expand the Models accordion in the Designer navigator and double-click the Sales Administration node in the ODI_DEMO folder.The model is opened in the Model Editor.
  4. Click Reverse Engineer.The TRG_CUSTOMER table is added to the model.
  5. Right-click the Mappings node in your project and click New Mapping.Enter a name for the mapping and clear the Create Empty Dataset option.The Mapping Editor is displayed.
  6. Drag the TRG_CUSTOMER table from the Sales Administration model onto the mapping.
  7. Drag the Customer table from the CSV model onto the mapping.
  8. Click the source connector point and drag to the target connector point.The Attribute Matching dialog is displayed.For this example, use the default options.The target expressions are then displayed in the properties for the target columns.
  9. Open the Physical tab of the Mapping Editor and click CUSTOMER_AP in TARGET_GROUP.
  10. In the CUSTOMER_AP properties, select LKM SQL to SQL (Built-In) on the Loading Knowledge Module tab.

You can then run the mapping to load CSV data into Oracle.

 
 
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