[CALCITE-3745] UnitCompiler can not find required class information.

[birschick-bq]

https://issues.apache.org/jira/browse/CALCITE-3745

• Uses Calcite class loaders to ensure access to resource and included classes.
• Updates to Janino 3.1.4

Note: Janino still has a bug which causes this to fail to load the factory class.
janino-compiler/janino#150
So we'll need to integrate with a future version (3.1.5) before merging this code.

Edit:
Janino pull request was merged. Awaiting release.

@gr4ve
@vlsi

[birschick-bq]

Removing PR as the Janino compiler 3.1.3 and 3.1.4 cause Calcite unit tests to fail.

[vlsi]

 Caused by: org.codehaus.commons.compiler.InternalCompilerException: Line 61, Column 17: org.codehaus.commons.compiler.InternalCompilerException: Operand stack underflow
                                        at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2393)
                                        at org.codehaus.janino.UnitCompiler.access$1800(UnitCompiler.java:231)
                                        at org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1530)
                                        at org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1523)
                                        at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:3198)
                                        at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1523)
                                        at org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1607)
                                        at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3531)
                                        at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3218)
                                        ... 75 more
                                        Caused by: org.codehaus.commons.compiler.InternalCompilerException: Operand stack underflow
                                            at org.codehaus.janino.StackMap.peekOperand(StackMap.java:94)
                                            at org.codehaus.janino.CodeContext.popOperand(CodeContext.java:1349)
                                            at org.codehaus.janino.UnitCompiler.putfield(UnitCompiler.java:12363)
                                            at org.codehaus.janino.UnitCompiler.compileSet2(UnitCompiler.java:6498)
                                            at org.codehaus.janino.UnitCompiler.access$13400(UnitCompiler.java:231)
                                            at org.codehaus.janino.UnitCompiler$20.visitFieldAccess(UnitCompiler.java:6480)
                                            at org.codehaus.janino.UnitCompiler$20.visitFieldAccess(UnitCompiler.java:6475)
                                            at org.codehaus.janino.Java$FieldAccess.accept(Java.java:4668)
                                            at org.codehaus.janino.UnitCompiler.compileSet(UnitCompiler.java:6475)
                                            at org.codehaus.janino.UnitCompiler.compileSet2(UnitCompiler.java:6489)
                                            at org.codehaus.janino.UnitCompiler.access$13200(UnitCompiler.java:231)
                                            at org.codehaus.janino.UnitCompiler$20.visitAmbiguousName(UnitCompiler.java:6478)
                                            at org.codehaus.janino.UnitCompiler$20.visitAmbiguousName(UnitCompiler.java:6475)
                                            at org.codehaus.janino.Java$AmbiguousName.accept(Java.java:4574)
                                            at org.codehaus.janino.UnitCompiler.compileSet(UnitCompiler.java:6475)
                                            at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3992)
                                            at org.codehaus.janino.UnitCompiler.access$6000(UnitCompiler.java:231)
                                            at org.codehaus.janino.UnitCompiler$12.visitAssignment(UnitCompiler.java:3944)
                                            at org.codehaus.janino.UnitCompiler$12.visitAssignment(UnitCompiler.java:3924)
                                            at org.codehaus.janino.Java$Assignment.accept(Java.java:4835)
                                            at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3924)
                                            at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2391)
                                            ... 83 more

It looks like an error that is worth reporting to janino.

[kuixiang]

select max(cast(ts as timestamp)) from database.table

with the same error...

update the janino to 3.1.6 will be ok~