[jira] [Created] (OODT-546) XMLPS inner-joins default table with itself

["Michael Joyce (JIRA)" <ji...@apache.org>]

Michael Joyce created OODT-546:
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             Summary: XMLPS inner-joins default table with itself
                 Key: OODT-546
                 URL: https://issues.apache.org/jira/browse/OODT-546
             Project: OODT
          Issue Type: Bug
          Components: xmlps
    Affects Versions: 0.5
            Reporter: Michael Joyce
             Fix For: 0.6


When the default table is set to an existing table name, XMLPS tries to inner join the default table with itself, resulting in a failed query. 

Example

With the following ps.xml file
<oodt:xmlps xmlns:oodt="http://incubator.apache.org/oodt/0.1-incubating"
	name="CERC Query Handler" id="EDRN.CERC.CancerData">
	<!--<tables default="Table1">-->
  <tables default="Cancer_Data">
    <table name="Cancer_Data" join="STUDY_PARTICIPANT_ID_SITE_TEXT" tofld="STUDY_PARTICIPANT_ID_SITE_TEXT"/>
  </tables>

  <field type="dynamic" name="STUDY_PARTICIPANT_ID" dbname="STUDY_PARTICIPANT_ID_SITE_TEXT" />
    
  <field type="constant" name="BASELINE_CANCER-CONFIRMATION_CODE" value="1"/>
</oodt:xmlps>

A query to 
http://localhost:8080/web-grid/prod?q=RETURN%3DSTUDY_PARTICIPANT_ID

Results in the following:
WARNING: Error executing sql: [SELECT Cancer_Data.STUDY_PARTICIPANT_ID_SITE_TEXT as STUDY_PARTICIPANT_ID FROM Cancer_Data INNER JOIN Cancer_Data ON Cancer_Data.STUDY_PARTICIPANT_ID_SITE_TEXT = Cancer_Data.STUDY_PARTICIPANT_ID_SITE_TEXT ]: Message: Not unique table/alias: 'Cancer_Data'

If the default table is changed to "Participant_Data" then the query functions fine.

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