[GROOVY-5975] @TypeChecked error when calling Standard Java Methods (i.e StringBuilder.append)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.1.0
• Component/s: groovy-jdk, Static Type Checker
• Labels: java typechecked
• Environment: JDK 1.6u39, IntelliJ IDEA 12.0.3
• Assignee: Cédric Champeau
• Reporter: Stefan Leonhartsberger
• Created: 04/Feb/13 09:33
• Updated: 18/May/13 06:12
• Resolved: 18/May/13 06:12

Description

When I call standard (plain simple) Java methods from within a Groovy script, which is annotated by @TypeChecked it seems that I always get back Java Object instances, which causes static type checking errors.

An example:

for(String output : RuntimeUtil.getErrOutput()) {
   recordExecutionStep("STDERR", output, "", true);
}

Method definitions (written in standard JAVA):

java.util.List<java.lang.String> getErrOutput();
void recordExecutionStep(java.lang.String a, java.lang.String b, java.lang.String c, boolean bSuccess)

Error:

[ERROR] GroovyScript.groovy: 61: [Static type checking] - Cannot find matching method scripts.profile.GroovyScript#recordExecutionStep(java.lang.String, java.lang.Object, java.lang.String, boolean)

So the output String variable is recogniced as a plain Object instance, which causes the error.