Connect to Presto from a Connection Pool in WebLogic

The CData JDBC Driver for Presto enables you to follow standard procedures to integrate Presto data into Java Web applications. This article shows how to deploy the CData JDBC Driver for Presto in WebLogic server.

Install the JDBC Driver in WebLogic Server

Add the driver JAR and license file to the classpath your application will be using. The .lic file must be located in the same folder as the JAR. These files are located in the lib subfolder of the installation directory.

If you want to add the driver to all domains, add the JAR to the WEBLOGIC_CLASSPATH environment variable. add the following line to the commEnv.cmd/sh script in WL_HOME\common\bin\.

If you want to add the driver to a specific domain, you will need to add the JAR to the PRE_CLASSPATH environment variable. Add the following line to the setDomainEnv.cmd/sh script in the bin subfolder of the folder for that domain:

Create a JDBC Data Source for Presto

After installing the driver, create the connection.

1. In the Domain Structure tree, click Services -> Data Sources -> New -> Generic Data Source.
2. On the JDBC Data Source Properties page, enter the following information:
   • Name: Enter a user-friendly name; for example, prestojdbc.
   • JDBC Name: Enter the path the JDBC data source will be bound to; for example, jdbc/Presto.
   • Database Type: Select Other.

3. Click Next to use the default options. On the last page, enter the following information and click Test Configuration:

   • Driver Class Name: Enter the driver class, cdata.jdbc.presto.PrestoDriver, in this property.

   • URL: Enter the JDBC URL. A typical JDBC URL is below:

     jdbc:presto:Server=127.0.0.1;Port=8080;

     Presto への接続には、まずはServer およびPort を接続プロパティとして設定します。それ以外の追加項目は接続方式によって異なります。

     TLS/SSL を有効化するには、UseSSL をTRUE に設定します。

     LDAP で認証

     LDAP で認証するには、次の接続プロパティを設定します:

     • AuthScheme: LDAP に設定。
     • User: LDAP で接続するユーザー名。
     • Password: LDAP で接続するユーザーのパスワード。

     Kerberos 認証

     KERBEROS 認証を使う場合には、以下を設定します:

     • AuthScheme: KERBEROS に設定。
     • KerberosKDC: 接続するユーザーのKerberos Key Distribution Center (KDC) サービス。
     • KerberosRealm: 接続するユーザーのKerberos Realm 。
     • KerberosSPN: Kerberos Domain Controller のService Principal Name。
     • KerberosKeytabFile: Kerberos principals とencrypted keys を含むKeytab file。
     • User: Kerberos のユーザー。
     • Password: Kerberos で認証するユーザーのパスワード。
   • Database User Name: Enter the username, if not specified in the JDBC URL.
   • Password: Enter the password, if not specified in the JDBC URL.

After selecting the server where you want to deploy the JDBC data source, you can now connect to Presto data.

More WebLogic Integration

The steps above show how configure the driver in a simple connection pooling scenario. For more use cases and information, see the JDBC sections in the WebLogic Data Sources chapter of the Oracle Fusion Middleware documentation.