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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4907) EmbeddedXADataSource with ;create=true attribute set in setDatabaseName fails with java.sql.SQLException: Database not available
Date Wed, 16 Feb 2011 21:50:24 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995536#comment-12995536

Kathey Marsden commented on DERBY-4907:

It would be a good performance optimization to set a shortDatabaseName  field on set rather
than parsing databaseName  on every connection.  I think the current  implementation is ok
too as I don't think it creates that big a hit.

I have always combined code and test in the patch, but it actually would be nice to have them
separate so the reviewer could run the test first and see that it fails and then with the
code change to see that it passes.  Maybe I'll start doing that #:)

On shortName() vs getShortName() I think the name is ok. I am concerned that often reflection
is used to get the bean properties on DataSources and don't want this one to show up but perhaps
if it is not public that is not an issue.  I am just not sure. Also as it is currently implemented
it is not just a straight getter and does some manipulation so the name is ok in that regard

> EmbeddedXADataSource with ;create=true attribute set in setDatabaseName fails with java.sql.SQLException:
Database not available
> --------------------------------------------------------------------------------------------------------------------------------
>                 Key: DERBY-4907
>                 URL: https://issues.apache.org/jira/browse/DERBY-4907
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions:,,,,,
>            Reporter: Kathey Marsden
>            Assignee: Siddharth Srivastava
>            Priority: Minor
>              Labels: derby_triage10_8
>         Attachments: derby4907.diff, derby4907.diff, derby4907.txt, derby4907_final.diff
> Setting the ;create=true attribute in setDatabaseName with EmbededXADataSource and EmbeddedXADataSource40
 fails with 
> $ java TestDerbyCreate
> Exception in thread "main" java.sql.SQLException: Database not available
>         at org.apache.derby.jdbc.EmbeddedXADataSource.setupResourceAdapter(Embe
> dedXADataSource.java:175)
>         at org.apache.derby.jdbc.EmbeddedXADataSource.getXAConnection(EmbeddedX
> DataSource.java:101)
>         at TestDerbyCreate.main(TestDerbyCreate.java:18)
> using the create attributie in databaseName works fine with EmbeddedDataSource.  
> Using setCreateDatabase("create") with EmbeddedXADataSource is a good work around and
I think generally preferable.
> import java.sql.*;
> import javax.sql.*;
> public class TestDerbyCreate
> {
>     public static void main(String[] args) throws Throwable
>     {
>         org.apache.derby.jdbc.EmbeddedXADataSource ds =
>             new 
> org.apache.derby.jdbc.EmbeddedXADataSource();
>         ds.setDatabaseName("TestDB;create=true");
>         ds.setUser("dbuser1");
>         ds.setPassword("dbpwd1");
> 	PooledConnection pooledConn = ds.getXAConnection();
>         Connection conn = pooledConn.getConnection();
>         System.out.println("Database product: " + 
> conn.getMetaData().getDatabaseProductName());
>         System.out.println("Database version: " + 
> conn.getMetaData().getDatabaseProductVersion());
>         System.out.println("Driver name:      " + 
> conn.getMetaData().getDriverName());
>         System.out.println("Driver version:   " + 
> conn.getMetaData().getDriverVersion());
>         System.out.println("JDBC driver major ve

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