[ASTERIXDB-2748] CASE expression fails if default value is TRUE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.4.1
• Fix Version/s: 0.9.5
• Component/s: RT - Runtime
• Assignee: Dmitry Lychagin
• Reporter: Dmitry Lychagin
• Created: 15/Jun/20 18:46
• Updated: 23/Jun/20 20:50
• Resolved: 23/Jun/20 20:45

Description

SELECT (CASE WHEN t = 2 THEN False ELSE True END) FROM [1] t 

fails with

Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 4 out of bounds for length 4
at org.apache.asterix.runtime.evaluators.functions.SwitchCaseDescriptor$2$1.evaluate(SwitchCaseDescriptor.java:83)

This error happens when the default value returned by the CASE expression is TRUE and none of the WHEN clauses match at runtime.