[FLINK-26327] throw not a literal exception in callContext.getArgumentValue when getTypeInference

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.14.2
• Component/s: Table SQL / API
• Assignee: Unassigned
• Reporter: Spongebob
• Created: 23/Feb/22 09:34
• Updated: 31/Mar/22 13:31

Description

 

//代码占位符
tableEnvironment.createTemporaryFunction("ROUNDX", RoundX.class);
tableEnvironment.createTemporaryFunction("NVL", Nvl.class);
tableEnvironment.executeSql("select ROUNDX( CAST(1.12345 as decimal(10,3)),NVL(MAX(f0),2) ) from t1").print();

// exception
Exception in thread "main" java.lang.AssertionError: not a literal: NVL($0, 2)

// trace
// `NVL` is a scalarFunction that likes oracle nvl function. And this exception might be thrown from this code in my  `getTypeInference` function of ROUNDX scalarFunction.
Optional<Integer> secondValue = callContext.getArgumentValue(1, Integer.class);