[CAY-2258] DI: typesafe binding of List and Map

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.B1
• Component/s: Core Library
• Labels: DI
• Assignee: Nikita Timofeev
• Reporter: Nikita Timofeev
• Created: 07/Mar/17 11:48
• Updated: 15/Mar/17 11:38
• Resolved: 15/Mar/17 11:38

Description

The goal of this improvement is to add compile time type-safety to dependency injection of Lists and Maps.

Proposed changes in DI API:
Add following methods in Binder interface

    <T> MapBuilder<T> bindMap(Class<T> valueType);
    <T> MapBuilder<T> bindMap(Class<T> valueType, String bindingName);
    <T> ListBuilder<T> bindList(Class<T> valueType, String bindingName);
    <T> ListBuilder<T> bindList(Class<T> valueType);

And deprecate non type-safe methods:

    <T> MapBuilder<T> bindMap(String bindingName);
    <T> ListBuilder<T> bindList(String bindingName);

Incompatibility
If Cayenne DI is used in third-party code (custom modules or Cayenne modifications) the code should be updated if bindings other than List<Object> and Map<String, Object> were used, as this code will be broken.