With criteria builder, I’m calling a function which has a collection as parameter. This fails with a NullPointerException when hibernate validates the types.

My code (simplified), where I define a generic “contains in array” check.

    protected <T> Predicate contains(Expression<Collection<T>> array, Expression<T> value) {
        return criteriaBuilder.equal(value, criteriaBuilder.function("ANY", Object.class, array));
    }

This fails at ArgumentTypesValidator.validate:92 with a NullPointerException:

final JdbcType jdbcType = getJdbcType( queryEngine, argument, indicators, javaType ); // → null
jdbcType.getDefaultSqlTypeCode() → NullPointerException
The ArgumentTypesValidator.getJdbcType:139 calls javaType.getRecommendedJdbcType and CollectionJavaType.getRecommendedJdbcType always returns null. I think that ArgumentTypesValidator.validate should handle a null jdbcType properly, in that case not doing the validation.

Or what is your opinion? Is there a workaround?