[JIRA] (HHH-16457) Values returned in ValueAccess.getValues() and getValue(…) not alphabetical for Java records
by Oliver Drotbohm (JIRA)
Oliver Drotbohm ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=62861a8... ) *updated* an issue
Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYWI3N2NkMjg2... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16457?atlOrigin=eyJpIjoiYWI3N2... ) HHH-16457 ( https://hibernate.atlassian.net/browse/HHH-16457?atlOrigin=eyJpIjoiYWI3N2... ) Values returned in ValueAccess.getValues() and getValue(…) not alphabetical for Java records ( https://hibernate.atlassian.net/browse/HHH-16457?atlOrigin=eyJpIjoiYWI3N2... )
Change By: Oliver Drotbohm ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=62861a8... )
The Javadoc of {{ValueAccess.getValues()}} states:
{code:java}/**
* Access to an individual value.
*
* @apiNote It is important to remember that attributes are
* sorted alphabetically. So the values here will be in alphabetically
* order according to the names of the corresponding attribute
*/{code}
For a Java record declaration like this:
{code:java}record MyRecord(int c, String b, LocalDate a) {}{code}
on Hibernate 6.1.7, {{ValueAccess.getValues()}} returns the {{LocalDate}} first, the {{String}} second, the integer last, i.e. alphabetically as defined in the Javadoc. On Hibernate 6.2, the same method invocation returns the integer first, the {{String}} second and the {{LocalDate}} last, i.e. as declared in the constructor but _not_ as specified in the Javadoc. This change of behavior is also evident when trying to access values by index , i. e. {{ValueAccess.getValue(…)}}.
h2. Steps to reproduce
{noformat}$ git clone https://github.com/odrotbohm/hibernate-bugs
$ cd hibernate-bugs/embeddable-instantiator
$ mvn clean test
// Success - Hibernate 6.1.7
// Change hibernate.version property in pom.xml to 6.2.0.Final
$ mvn clean test
// See test fail with
java.lang.ClassCastException: Cannot cast java.time.LocalDate to java.lang.Integer
at java.base/java.lang.Class.cast(Class.java:3889)
at org.hibernate.metamodel.spi.ValueAccess.getValue(ValueAccess.java:33)
at example.MyRecord$MyRecordInstantiator.instantiate(MyRecord.java:56){noformat}
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