[BUG] Incompatibility with Java pre version 14

[StepanOrt]

Describe the bug
Mappie is not able to generate mappers from Java classes if run on with JVM language version that doesn't include Records (introduced in Java 14).

> Task :commons:compileKotlin
e: java.lang.NullPointerException
	at tech.mappie.ir.resolving.classes.sources.ImplicitClassMappingSourcesCollector.isJavaGetter(ImplicitClassMappingSourcesCollector.kt:43)
	at tech.mappie.ir.resolving.classes.sources.ImplicitClassMappingSourcesCollector.visitFunction(ImplicitClassMappingSourcesCollector.kt:27)
	at tech.mappie.ir.resolving.classes.sources.ImplicitClassMappingSourcesCollector.visitFunction(ImplicitClassMappingSourcesCollector.kt:17)
	at org.jetbrains.kotlin.ir.visitors.IrVisitor.visitSimpleFunction(IrVisitor.kt:65)
	at org.jetbrains.kotlin.ir.declarations.IrSimpleFunction.accept(IrSimpleFunction.kt:39)
	at tech.mappie.ir.util.BaseVisitor.accept(BaseVisitor.kt:15)
	at tech.mappie.ir.resolving.classes.sources.ImplicitClassMappingSourcesCollector.visitClass(ImplicitClassMappingSourcesCollector.kt:22)
	at tech.mappie.ir.resolving.classes.sources.ImplicitClassMappingSourcesCollector.visitClass(ImplicitClassMappingSourcesCollector.kt:17)

Line that throw exception:

if (parentAsClass.isSubclassOf(context.pluginContext.referenceClass(CLASS_ID_RECORD)!!)) {

The problem is that if SDK of Java doesn't contain class java.lang.Record, the function referenceClass is null and non-null assertion operator throws the exception. Solution is refactoring of the code with removal of assumption of non-null.

if (context.pluginContext.referenceClass(CLASS_ID_RECORD)?.let {  parentAsClass.isSubclassOf(it) } ?: false) {

Kotlin version
2.2.0

Mappie version
1.4.0

Mappie and Kotlin compatibility
yes

Invocation method
Gradle

Additional context
Tested on Java 11

[stefankoppier]

Thanks for the report and solution. I'll create a PR and create a release today :)

[stefankoppier]

Just released v2.2.0-1.4.1 in which this problem should be resolved.

[StepanOrt]

Thank you