com.sap.cds.services.impl.handlerregistry.resolver

Interface ArgumentResolver

All Known Implementing Classes:

EventContextArgumentResolver, PojoArgumentResolver

public interface ArgumentResolver

Describes how to resolve a certain argument value on a given EventContext

Method Summary

Modifier and Type	Method and Description
default String[]	indicateEntities()
default String[]	indicateEvents()
Object	resolve(EventContext context) Finds an argument value on the given EventContext
void	verifyOrThrow(HandlerDescriptor descriptor) Verifies the resolver, based on the final HandlerDescriptor.

Method Detail

resolve

Object resolve(EventContext context)

Finds an argument value on the given EventContext

Parameters:

context - the EventContext currently processed

Returns:

the determined argument value

verifyOrThrow

void verifyOrThrow(HandlerDescriptor descriptor)

Verifies the resolver, based on the final HandlerDescriptor.

Parameters:

descriptor - the HandlerDescriptor

Throws:

IllegalArgumentException - if the verification failed

indicateEvents

default String[] indicateEvents()

Returns:

an array of indicated events, that can be used if the handler does not specify events in their annotation

indicateEntities

default String[] indicateEntities()

Returns:

an array of indicated entities, that can be used if the handler does not specify entities in their annotation