Query to a MongoDB array gives "TEIID30384 Error while evaluating function array_get"

Solution Verified - Updated -

Issue

  • Manually modeled a MongoDB source and querying using ARRAYTABLE function to retrieve from an array list and get:
WARN  \[org.teiid.PROCESSOR\] (Worker86_QueryProcessorQueue113612) TEIID30020 Processing exception for request vfjR8qG6wgW+.10 'TEIID30328 Unable to evaluate convert(array_get(a.formlist, 1), string): TEIID30384 Error while evaluating function array_get'. Originally ExpressionEvaluationException 'TEIID30416 Expected a java.sql.Array, or java array type, but got: class com.mongodb.BasicDBList' FunctionMethods.java:1476.: org.teiid.api.exception.query.ExpressionEvaluationException: TEIID30328 Unable to evaluate convert(array_get(a.formlist, 1), string): TEIID30384 Error while evaluating function array_get

Environment

  • Red Hat JBoss Data Virtualization (DV) 6.2.5
  • MongoDB metadata:
CREATE FOREIGN TABLE subjects (
    _id string(24) OPTIONS(NAMEINSOURCE '_id'),
    studyoid string(16793600) OPTIONS(NAMEINSOURCE 'studyoid'),
    metadataversionoid string(16793600) OPTIONS(NAMEINSOURCE 'metadataversionoid'),
    subjectkey string(16793600) OPTIONS(NAMEINSOURCE 'subjectkey'),
    formlist object OPTIONS(NAMEINSOURCE 'formlist'),
    CONSTRAINT NewPrimaryKey PRIMARY KEY(_id)
) OPTIONS(NAMEINSOURCE 'subjects')

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