MongoDB: ClassCastException while doing JOIN based query -------------------------------------------------------- Key: TEIID-2843 URL: https://issues.jboss.org/browse/TEIID-2843 Project: Teiid Issue Type: Bug Components: Misc. Connectors Affects Versions: 8.4 Reporter: Ramesh Reddy Assignee: Ramesh Reddy Labels: mongodb, Alpha3 Fix For: 8.7 With Schema like {code} CREATE FOREIGN TABLE Company ( name varchar(50) PRIMARY KEY, description varchar(256) ) OPTIONS(UPDATABLE 'TRUE',"teiid_mongo:EMBEDDABLE" 'true'); CREATE FOREIGN TABLE Job ( jobId integer PRIMARY KEY, description varchar(256), companyname varchar(50), FOREIGN KEY (companyname) REFERENCES Company (name) ) OPTIONS(UPDATABLE 'TRUE', "teiid_mongo:EMBEDDABLE" 'true'); CREATE FOREIGN TABLE Employee ( ename varchar(50) PRIMARY KEY, jobId integer, FOREIGN KEY (jobId) REFERENCES Job (jobId) ) OPTIONS(UPDATABLE 'TRUE'); {code} then doing a single JOIN Query {code} select e.ename, c.name, j.description from Employee as e JOIN Job j ON e.jobId = j.jobId JOIN Company c ON j.companyname = c.name {code} fails with {code} 14:22:05,271 ERROR [org.teiid.PROCESSOR] (Worker23_QueryProcessorQueue432) 258Se2CWMytI TEIID30019 Unexpected exception for request 258Se2CWMytI.28: java.lang.ClassCastException: org.teiid.language.Join cannot be cast to org.teiid.language.NamedTable at org.teiid.translator.mongodb.MongoDBSelectVisitor.visit(MongoDBSelectVisitor.java:419) at org.teiid.language.Join.acceptVisitor(Join.java:66) [teiid-api-8.7.0.Alpha3-SNAPSHOT.jar:8.7.0.Alpha3-SNAPSHOT] at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51) [teiid-api-8.7.0.Alpha3-SNAPSHOT.jar:8.7.0.Alpha3-SNAPSHOT] at org.teiid.translator.mongodb.MongoDBSelectVisitor.append(MongoDBSelectVisitor.java:95) at org.teiid.translator.mongodb.MongoDBSelectVisitor.append(MongoDBSelectVisitor.java:106) at org.teiid.translator.mongodb.MongoDBSelectVisitor.visit(MongoDBSelectVisitor.java:482) at org.teiid.language.Select.acceptVisitor(Select.java:103) [teiid-api-8.7.0.Alpha3-SNAPSHOT.jar:8.7.0.Alpha3-SNAPSHOT] at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51) [teiid-api-8.7.0.Alpha3-SNAPSHOT.jar:8.7.0.Alpha3-SNAPSHOT] {code}