issue2551142 - Import of retired node ... unique constraint failure. Title: Import of retired node with username after active node fails with unique constraint failure. More fixes needed for mysql and postgresql. mysql: add unique constraint for (keyvalue, __retired__) when creating class in the database. On schema change if class is changed, remove the unique constraint too. upgrade version of rdbms database from 5 to 6 to add constraint to all version 5 databases that were created as version 5 and didn't get the unique constraint. Make no changes on version 5 databases upgraded from version 4, the upgrade process to 5 added the constraint. Make no changes to other databases (sqlite, postgres) during upgrade from version 5 to 6. postgres: Handle the exception raised on unique constraint violation. The exception invalidates the database connection so it can't be used to recover from the exception. Added two new database methods: checkpoint_data - performs a db.commit under postgres does nothing on other backends restore_connection_on_error - does a db.rollback on postgres, does nothing on other backends with the rollback() done on the connection I can use the database connection to fixup the import that failed on the unique constraint. This makes postgres slower but without the commit after every imported object, the rollback will delete all the entries done up to this point. Trying to figure out how to make the caller do_import batch and recover from this failure is beyond me. Also dismissed having to process the export csv file before importing. Pushing that onto a user just seems wrong. Also since import/export isn't frequently done the lack of surprise on having a failing import and reduced load/frustration for the user seems worth it. Also the import can be run in verbose mode where it prints out a row as it is processed, so it may take a while, ut the user can get feedback. db_test-base.py: add test for upgrade from 5 to 6.

<tal:block metal:use-macro="templates/page/macros/icing">
<title metal:fill-slot="head_title" i18n:translate="">Password reset request - <span
 i18n:name="tracker" tal:replace="config/TRACKER_NAME" /></title>
<span metal:fill-slot="body_title" tal:omit-tag="python:1"
 i18n:translate="">Password reset request</span>
<td class="content" metal:fill-slot="content">

<tal:askforinfo tal:condition="python:options['error_message'] or
			       '@action' not in request.form"> 

<p i18n:translate="">You have two options if you have forgotten your password.
If you know the email address you registered with, enter it below.</p>

<p i18n:translate="">If your  user was  automatically  created during
import  from  the old  sourceforge  tracker,  your  e-mail address  is
&lt;Sourceforge  username&gt;@users.sourceforge.net. The  mail address
associated with your account can be changed after login.</p>

<form method="POST" onSubmit="return submit_once()"
      tal:attributes="action context/designator">
    <table class="form">
      <tr>
        <th i18n:translate="">Email Address:</th>
        <td><input name="address"></td>
      </tr>
      <tr>
        <td>&nbsp;</td>
        <td>
          <input type="hidden" name="@action" value="passrst">
          <input type="hidden" name="@template" value="forgotten">
          <input type="submit" value="Request password reset"
           i18n:attributes="value">
	  <input name="@csrf" type="hidden"
		 tal:attributes="value python:utils.anti_csrf_nonce()">
        </td>
      </tr>
</table>

<p i18n:translate="">Or, if you know your username, then enter it below.</p>

<p i18n:translate="">If you have previously created or modified issue
reports in the sourceforge issue tracker, you have an account here with
the same username as your sourceforge username.</p>

<table class="form">
 <tr><th i18n:translate="">Username:</th> <td><input name="username"></td> </tr>
 <tr><td></td><td><input type="submit" value="Request password reset"
   i18n:attributes="value"></td></tr>
</table>
</form>

<p i18n:translate="">A confirmation email will be sent to you -
please follow the instructions within it to complete the reset process.</p>

</tal:askforinfo>

</td>
g
</tal:block>