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https://issues.apache.org/jira/browse/DDLUTILS-216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Riemer updated DDLUTILS-216:
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Attachment: split_copy_data.patch
> Split SqlBuilder.copyData() to allow for copying specific columns
> -----------------------------------------------------------------
>
> Key: DDLUTILS-216
> URL: https://issues.apache.org/jira/browse/DDLUTILS-216
> Project: DdlUtils
> Issue Type: Improvement
> Components: Core (No specific database)
> Affects Versions: 1.0
> Reporter: Rick Riemer
> Assignee: Thomas Dudziak
> Fix For: 1.1
>
> Attachments: split_copy_data.patch
>
>
> Currently the copyData() method on SqlBuilder is protected and only allows
> for copying data between columns with the same name. In some cases
> (especially during upgrades) it may be useful to copy the content of one
> column to another.
> As an example: during an upgrade a column may be moved out of a table to
> another table. To implement this change it is required to create the new
> column in a table, copy the data from the old column to the new column and
> optionally drop the old column.
> This behavior can easily be achieved by splitting copyData() into a part that
> determines the set of columns to copy and a part that actually copies the
> data between those columns. If the last part if made into a public method,
> this also allows for users to implement their custom table copy changes in
> combination with #DDLUTILS-215.
> The attached patch implements this behavior. The patch does not break the
> existing API.
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