CollectorFactory (jdbi3 documentation 3.20.0 API)

All Known Implementing Classes:: BuiltInCollectorFactory

public interface CollectorFactory

Factory for building Collectors to assemble containers of elements. The collector produces only objects of the type of the container elements.

Method Summary

Modifier and Type

Method

Description

boolean

accepts(Type containerType)

Collector<?,?,?>

build(Type containerType)

Optional<Type>

elementType(Type containerType)

Method Details
- accepts
  
  boolean accepts(Type containerType)
  
  Parameters:
  
  containerType - the container type
  
  Returns:
  
  whether this factory can produce a collector for the given container type.
- elementType
  
  Optional<Type> elementType(Type containerType)
  
  Parameters:
  
  containerType - the container type
  
  Returns:
  
  the container element type if it can be discovered through reflection; empty otherwise.
  
  See Also:
  
  StatementContext.findElementTypeFor(Type)
- build
  
  Collector<?,?,?> build(Type containerType)
  
  Parameters:
  
  containerType - the type of the container
  
  Returns:
  
  a Collector for the given container type.
  
  See Also:
  
  StatementContext.findCollectorFor(Type), JdbiCollectors.findFor(Type)