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https://issues.apache.org/jira/browse/AVRO-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16363943#comment-16363943
 ] 

Aldo Sinanaj commented on AVRO-2139:
------------------------------------

Hi guys,

I'm experiencing the same issue and would be very nice not having this problem. 
Is there any update on this?

Cheers,

Aldo

> Unable to use the copy builder with @java-class annotated generated classes
> ---------------------------------------------------------------------------
>
>                 Key: AVRO-2139
>                 URL: https://issues.apache.org/jira/browse/AVRO-2139
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.8.2
>            Reporter: Auke van Leeuwen
>            Priority: Critical
>
> Description:
> When I'm using a schema with an {{@java-class}}, I can't seem to be using the 
> 'copy' builder.
> I think a piece of code says more than a thousands words:
> {{.avdl}} snippet:
> {noformat}
> ...
>   record Money {
>     Currency currency;
>     @java-class("java.math.BigDecimal")
>     string amount;
>   }
> ...
> {noformat}
> Test:
> {noformat}
> @Test
> void test_copy_builder() {
>     Money original = Money.newBuilder()
>             .setAmount(BigDecimal.TEN)
>             .setCurrency(Currency.EUR)
>             .build();
>     Money duplicate = Money.newBuilder(original).build();
>     assertThat(duplicate, is(equalTo(original)));
> }
> {noformat}
> Result:
> {noformat}
> java.lang.ClassCastException: org.apache.avro.util.Utf8 cannot be cast to 
> java.math.BigDecimal
>       at 
> avro.moneyou.midlayer.common.financial.Money$Builder.<init>(Money.java:193)
>       at 
> avro.moneyou.midlayer.common.financial.Money$Builder.<init>(Money.java:155)
>       at 
> avro.moneyou.midlayer.common.financial.Money.newBuilder(Money.java:149)
>       at 
> avro.moneyou.midlayer.common.financial.MoneyTest.test_copy_builder(MoneyTest.java:20)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:389)
>       at 
> org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)
>       at 
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:167)
>       at 
> org.junit.jupiter.engine.execution.ThrowableCollector.execute(ThrowableCollector.java:40)
>       at 
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:163)
> ...
> {noformat}



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