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Posted to issues@kylin.apache.org by "Luke Han (JIRA)" <ji...@apache.org> on 2015/09/06 13:47:46 UTC
[jira] [Closed] (KYLIN-945) Kylin JDBC - Get Connection from
DataSource results in NullPointerException
[ https://issues.apache.org/jira/browse/KYLIN-945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Luke Han closed KYLIN-945.
--------------------------
Resolution: Fixed
> Kylin JDBC - Get Connection from DataSource results in NullPointerException
> ---------------------------------------------------------------------------
>
> Key: KYLIN-945
> URL: https://issues.apache.org/jira/browse/KYLIN-945
> Project: Kylin
> Issue Type: Bug
> Components: Driver - JDBC
> Affects Versions: v1.0
> Reporter: Sébastien Jelsch
> Assignee: Shaofeng SHI
> Fix For: v1.0
>
> Attachments: kylin-945.patch
>
>
> Trying to get JDBC Connection from DataSource results in NullPointerException after upgrading to Apache Calcite 1.3.0.
> It's necessary for Mondrian integration.
> *+Example:+*
> {code:title=KylinDataSourceConnection.java|borderStyle=solid}
> import java.sql.Connection;
> import java.sql.SQLException;
> import java.sql.Statement;
> import org.apache.commons.dbcp.BasicDataSource;
> public class KylinDataSourceConnection {
> public static void main(String[] args) {
> BasicDataSource basicDataSource = new BasicDataSource();
> basicDataSource.setDriverClassName("org.apache.kylin.jdbc.Driver");
> basicDataSource.setUrl("jdbc:kylin://localhost:7070/projectName");
> basicDataSource.setUsername("admin");
> basicDataSource.setPassword("KYLIN");
> try {
> Connection conn = basicDataSource.getConnection();
> Statement stmt = conn.createStatement();
> stmt.executeQuery("SELECT count(*) FROM FACTS");
> } catch (SQLException e) {
> e.printStackTrace();
> }
> }
> }
> {code}
> *+Exception:+*
> {quote}
> Exception in thread "main" java.lang.NullPointerException
> at org.apache.calcite.avatica.AvaticaConnection.getAutoCommit(AvaticaConnection.java:137)
> at org.apache.commons.dbcp.DelegatingConnection.getAutoCommit(DelegatingConnection.java:337)
> at org.apache.commons.dbcp.PoolableConnectionFactory.activateObject(PoolableConnectionFactory.java:703)
> at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1557)
> at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
> at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388)
> at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
> at org.testsource.mondrianlagunitas.KylinDataSourceConnection.main(KylinDataSourceConnection.java:19)
> {quote}
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