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https://issues.apache.org/jira/browse/GROOVY-7696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-7696.
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> Bug with @TypeChecked and generic properties of Java classes used in binary
> expressions
> ---------------------------------------------------------------------------------------
>
> Key: GROOVY-7696
> URL: https://issues.apache.org/jira/browse/GROOVY-7696
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 2.4.5
> Reporter: Marc Ewert
> Assignee: Paul King
> Fix For: 2.4.6
>
>
> I have the following two Java Classes:
> {code}
> import java.math.BigDecimal;
> public abstract class Attribute<T> {
> private BigDecimal numericValue;
> public abstract T getValue();
> public abstract void setValue(T value);
> public BigDecimal getNumericValue() {
> return numericValue;
> }
> public void setNumericValue(BigDecimal numericValue) {
> this.numericValue = numericValue;
> }
> }
> {code}
> {code}
> import java.math.BigDecimal;
> public class LongAttribute extends Attribute<Long> {
> public Long getValue() {
> return getNumericValue() == null ? null :
> getNumericValue().longValue();
> }
> public void setValue(Long value) {
> setNumericValue(BigDecimal.valueOf(value));
> }
> }
> {code}
> And a Groovy test class with @TypeChecked annotation:
> {code}
> import groovy.transform.TypeChecked
> @TypeChecked
> class Scratch {
> public static void main(String[] args) {
> LongAttribute attr = new LongAttribute();
> attr.value = 0L
> println "getter: " + attr.value
> println "smaller as 0? " + (attr.value < 0)
> }
> }
> {code}
> Compiling the class leads to the error message:
> {code}
> Error:(10, 36) Groovyc: [Static type checking] - Cannot find matching method
> java.lang.Object#compareTo(int). Please check if the declared type is right
> and if the method exists.
> {code}
> Removing the @TypeChecked annotation or moving the Java classes into the
> Groovy class as static inner classes suppresses the compilation error.
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