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From "Steve Ferguson (Issue Comment Edited) (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (DERBY-5201) Create tools for reading the contents of the seg0 directory
Date Fri, 27 Jan 2012 17:34:15 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13194936#comment-13194936
] 

Steve Ferguson edited comment on DERBY-5201 at 1/27/12 5:33 PM:
----------------------------------------------------------------

Thanks very much for this. 2 pieces of feedback.

 If I provide a data signature, and a row contains a column with a null value, and Exception
is thrown and the program exits. I put a try catch ignore Throwable block around  dvd.readExternalFromArray(
is ); to circumvent this. 

I think it would nice if a data signature is present to add an XML element to output the name
of the column in addition to its index. 

I also found this link helpful in conjunction with the tool to query out my ddl to pass into
the tool as a data signature for tables with lots of columns. 

http://wiki.apache.org/db-derby/ListTableColumns
                
      was (Author: sferguson):
    Thanks very much for this. 2 pieces of feedback.

 If I provide a data signature, and a row contains a column with a null value, and Exception
is thrown and the program exists. I put a try catch ignore Throwable block around  dvd.readExternalFromArray(
is ); to circumvent this. 

I think it would nice if a data signature is present to add an XML element to output the name
of the column in addition to its index. 

I also found this link helpful in conjunction with the tool to query out my ddl to pass into
the tool as a data signature for tables with lots of columns. 

http://wiki.apache.org/db-derby/ListTableColumns
                  
> Create tools for reading the contents of the seg0 directory
> -----------------------------------------------------------
>
>                 Key: DERBY-5201
>                 URL: https://issues.apache.org/jira/browse/DERBY-5201
>             Project: Derby
>          Issue Type: Task
>          Components: Tools
>    Affects Versions: 10.9.0.0
>            Reporter: Rick Hillegas
>         Attachments: DataFileReader.java, DataFileReader.java
>
>
> It would be nice to have tools which read Derby data files (the files in the seg0 directory)
without disturbing their contents.

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