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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