[CAY-2812] ColumnQuery mapper function is not applied in ResultBatchIterator

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.2
• Fix Version/s: 4.2.1, 5.0-M1
• Component/s: Core Library
• Assignee: Nikita Timofeev
• Reporter: Nikita Timofeev
• Created: 10/Aug/23 11:12
• Updated: 24/Aug/23 15:18
• Resolved: 24/Aug/23 15:18

Description

query.batchIterator() call always returns Object[] disregarding mapper set for the ColumnQuery causing ClassCastException

Query example:

void select() {
  // actual type of the iterator will be Object[] instead of DTO
  ResultBatchIterator<DTO> it = ObjectSelect.columnQuery(Entity.class, Entity.ATTRIBUTE1, Entity.ATTRIBUTE2)
     .map(this::toDto)
     .batchIterator(context, 100);
}

DTO toDto(Object[] data) {
  // ...
}

Issue Links

• is superceded by: CAY-2814 Select query iterator() and batchIterator() methods return incorrect results