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From "Deepak Narkhede (JIRA)" <j...@apache.org>
Subject [jira] [Created] (APEXMALHAR-2330) JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL driver
Date Tue, 08 Nov 2016 12:45:58 GMT
Deepak Narkhede created APEXMALHAR-2330:
-------------------------------------------

             Summary: JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL
driver
                 Key: APEXMALHAR-2330
                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2330
             Project: Apache Apex Malhar
          Issue Type: Bug
            Reporter: Deepak Narkhede
            Assignee: Deepak Narkhede


Here is the description:
Problem: 
JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL driver.

Problem Description:
1) When JdbcPOJOPollInputOperator tries to populateColumnDataTypes, column names retrieved
from resultmetadata from database ( this case : Postgres) are all lowercase.
2) Whereas columnDatatypes specified in fieldinfos might be in same case.
3) Internally hashmap ( nameToType) is used which mismatches if column name and fieldinfo
are not in same case. Hence columnDataTypes is empty which causes null exception in activate
call.

Proposed Solution:
Using similar case for hashmap and column names irrespective of any database used for JdbcPOJOPollInputOperator.



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