Delegating collections create BeanPath extension

[edudar]

Using 5.0.0. JPA.

According to the docs, extending a class that has a Path class already should create a Q class that extends said Path class, like

public class QueryExtensions {
  @QueryDelegate(Date.class)
  public static BooleanExpression inPeriod(DatePath<Date> date, Pair<Date,Date> period){
     return date.goe(period.getFirst()).and(date.loe(period.getSecond()));
  }
}

public class QDate extends DatePath<java.sql.Date> {
}

http://querydsl.com/static/querydsl/5.0.0/reference/html/ch03s03.html#d0e2529

However, when I'm trying to extend a collection, like Set, QueryDSL creates BeanPath rendering other collection functions unusable:

public class SetFunctions {
  @QueryDelegate(Set.class)
  public static BooleanExpression isEmptyOrContains(SetPath<Object, ? extends SimpleExpression<Object>> field, Object value) {
    return field.isEmpty().or(field.contains(value));
  }
}

@Generated("com.querydsl.codegen.DefaultEmbeddableSerializer")
public class QSet extends BeanPath<Set<?>> {
  public BooleanExpression isEmptyOrContains(Object value) { ... }
}

This also results in class cast errors because generated QSet is not SetPath.

[stale]

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