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SQLServerBulkCopy does not accept the ISQLServerConnection during initialization while running in websphere liberty server #1072

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@GayathriNagarajan18

Description

@GayathriNagarajan18

Driver version

sqljdbc42.jar

SQL Server version

SQL Server 2014

Client Operating System

Windows 10

JAVA/JVM version

JDK 1.8

Table schema

I wanna just store the complete raw data directly from a text file to the corresponding columns using SQLServerBulkCopy API, so I have not kept any keys (primary/unique/foreign) for my table

Problem description

I am using SQLServerBulkCopy API to store millions of records. My app runs in websphere-liberty. I use SQLServerConnectionPoolDataSource. So when I try to pass the connection to the bulkCopy like
SQLServerBulkCopy bulkCopy = new SQLServerBulkCopy(conn);
I get an exception stating
com.microsoft.sqlserver.jdbc.SQLServerException: Destination connection must be a connection from the Microsoft JDBC Driver for SQL Server.
where the conn is unwrapped using ISQLServerConnection interface from app server created connection namely WsJdbcConnection.

But passing a physical connection using the connection url to the SQLServerBulkCopy works good.

Reproduction code

if(connection.isWrapperFor(ISQLServerConnection.class)) {
       ISQLServerConnection conn = connection.unwrap(ISQLServerConnection.class);
       SQLServerBulkCopy bulkCopy =  new SQLServerBulkCopy(conn);
}

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