[teiid-issues] [JBoss JIRA] (TEIID-3281) MongoDB: EmptyStackException when joining tables

[Filip Elias (JIRA)]

Filip Elias created TEIID-3281:
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             Summary: MongoDB: EmptyStackException when joining tables
                 Key: TEIID-3281
                 URL: https://issues.jboss.org/browse/TEIID-3281
             Project: Teiid
          Issue Type: Bug
          Components: Connector API
    Affects Versions: 8.7
            Reporter: Filip Elias
            Assignee: Steven Hawkins


Teiid throws java.util.EmptyStackException when joining data from table which has teiid_mongo:MERGE property enabled.

Example:
{code}
insert into customer2 values(1,'Pepa', 'Koukal');
insert into customer2 values(2,'Jan', 'Tlemil');
insert into Address values(1,1,'Pepas Street','Pepas City','Pepas State', 'Pepas zipcode');
insert into Address values(2,2,'Jans Street','Pepa','Jans State', 'Jans zipcode');
{code}
{code}
select a.*,b.* from customer2 a inner join Address b on a.CustomerId=b.CustomerId order by a.customerID
{code}
{code}
Error: 
 java.util.EmptyStackException
at java.util.Stack.peek(Stack.java:102)
at java.util.Stack.pop(Stack.java:84)
at org.teiid.translator.mongodb.MongoDBSelectVisitor.visit(MongoDBSelectVisitor.java:993)
at org.teiid.language.SortSpecification.acceptVisitor(SortSpecification.java:53)
at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51)
at org.teiid.translator.mongodb.MongoDBSelectVisitor.append(MongoDBSelectVisitor.java:112)
{code}
VDB and log are in the attachment.



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