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DataBind Controls to Bullhorn CRM データ in C++Builder
DataBind to Bullhorn CRM のデータ in C++Builder with standard components and controls.
最終更新日：2023-06-12The CData ODBC Driver for Bullhorn CRM makes it easy to integrate connectivity to live Bullhorn CRM のデータ with standard data access components in C++Builder. This article shows how to create a simple visual component library (VCL) application in C++Builder that connects to Bullhorn CRM のデータ, executes queries, and displays the results in a grid. An additional section shows how to use FireDAC components to execute commands from code.
Create a Connection to Bullhorn CRM データ
If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.
Bullhorn CRM 接続プロパティの取得・設定方法
Bullhorn CRM に接続するには、Bullhorn CRM アカウントの資格情報を入力します。また、DataCenterCode プロパティをデータセンターに対応するデータセンターコードに設定してください。詳しくは、こちら を参照してください。
CLS2、CLS21 などのコードはクラスタID で、ログインした際のブラウザのURL（アドレスバー）に含まれます。
例えば、
https://cls21.bullhornstaffing.com/BullhornSTAFFING/MainFrame.jsp?#no-baこちらのURL は、ログインしたユーザーがCLS21 クラスタに存在することを示しています。
ちなみに、コールバックURL の末尾に"/" を含む値、例えば http://localhost:33333/ を指定する場合は、アプリケーション設定で指定したコールバックURL と厳密に同じ値を指定する必要があります。このパラメータの文字が一致しない場合、エラーとなります。
Bullhorn CRM への認証（OAuth）
Bullhorn CRM ではOAuth 2.0 認証標準を利用できます。 OAuth を使用して認証するには、すべてのシナリオでカスタムOAuth アプリケーションを作成して設定する必要があります。詳しい認証方法については、ヘルプドキュメントの「OAuth」セクションを参照してください。
You can then follow the steps below to use the Data Explorer to create a FireDAC connection to Bullhorn CRM.
- In a new VCL Forms application, expand the FireDAC node in the Data Explorer.
- Right-click the ODBC Data Source node in the Data Explorer.
- Click Add New Connection.
- Enter a name for the connection.
- In the FireDAC Connection Editor that appears, set the DataSource property to the name of the ODBC DSN for Bullhorn CRM.
Create VCL Applications with Connectivity to Bullhorn CRM データ
Follow the procedure below to start querying Bullhorn CRM のデータ from a simple VCL application that displays the results of a query in a grid.
-
Drop a TFDConnection component onto the form and set the following properties:
- ConnectionDefName: Select the FireDAC connection to Bullhorn CRM.
- Connected: Select True from the menu and, in the dialog that appears, enter your credentials.
-
Drop a TFDQuery component onto the form and set the properties below:
- Connection: Set this property to the TFDConnection component, if this component is not already specified.
SQL: Click the button in the SQL property and enter a query. For example:
SELECT Id, CandidateName FROM Candidate WHERE CandidateName = '山田太郎'- Active: Set this property to true.
Drop a TDataSource component onto the form and set the following property:
- DataSet: In the menu for this property, select the name of the TFDQuery component.
-
Drop a TDBGrid control onto the form and set the following property:
- DataSource: Select the name of the TDataSource.
- Drop a TFDGUIxWaitCursor onto the form — this is required to avoid a run-time error.
Execute Commands to Bullhorn CRM with FireDAC Components
You can use the TFDConnection and TFQuery components to execute queries to Bullhorn CRM のデータ. This section provides bullhorncrmspecific examples of executing queries with the TFQuery component.
Connect to Bullhorn CRM データ
To connect to the data source, set the Connected property of the TFDConnection component to true. You can set the same properties from code:
FDConnection1->ConnectionDefName = "CData Bullhorn CRM ODBC Source";
FDConnection1->Connected = true;
To connect the TFDQuery component to Bullhorn CRM のデータ, set the Connection property of the component. When a TFDQuery component is added at design time, its Connection property is automatically set to point to a TFDConnection on the form, as in the application above.
Create Parameterized Queries
To create a parameterized query, use the following syntax below:
FDQuery1->SQL->Text = "select * from Candidate where candidatename = :CandidateName";
FDQuery1->ParamByName("candidatename")->AsString = "山田太郎";
query->Open();
The example above binds a string-type input parameter by name and then opens the dataset that results.
Prepare the Statement
Preparing statements is costly in system resources and time. The connection must be active and open while a statement is prepared. By default, FireDAC prepares the query to avoid recompiling the same query over and over. To disable statement preparation, set ResourceOptions.DirectExecute to True; for example, when you need to execute a query only once.
Execute a Query
To execute a query that returns a result set, such as a select query, use the Open method. The Open method executes the query, returns the result set, and opens it. The Open method will return an error if the query does not produce a result set.
FDQuery1->SQL->Text := "select * from Candidate where candidatename = :CandidateName";
FDQuery1.ParamByName("candidatename")->AsString = "山田太郎";
FDQuery1->Open();
To execute a query that does not return a result set, use the ExecSQL method. The ExecSQL method will return an error if the query returns a result set. To retrieve the count of affected rows use the TFD.RowsAffected property.
FDQ.SQL.Text := "delete from Candidate where Id = :Id";
FDQuery1->Params->Items[0]->AsString = "x12345";
FDQuery1->ExecSQL();
AnsiString i = FDQuery1->RowsAffected;
Related Articles
Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.
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