Package ratpack.core.service

Interface ServiceDependenciesSpec

public interface ServiceDependenciesSpec

Allows declaring which services depend on which services.

Since:

1.3

See Also:

ServiceDependencies, DependsOn

Method Summary

Modifier and Type	Method	Description
default ServiceDependenciesSpec	dependsOn(Class<?> dependents, Class<?> dependencies)	A convenience form of dependsOn(Predicate, Predicate) where the predicates are based on compatibility with the given types.
default <T1,T2> ServiceDependenciesSpec	dependsOn(Class<T1> dependentsType, Predicate<? super T1> dependents, Class<T2> dependenciesType, Predicate<? super T2> dependencies)	Specifies that all services that are of the given dependentsType that match the dependents predicate are dependent on all services that are of the dependenciesType that match the dependencies predicate.
ServiceDependenciesSpec	dependsOn(Predicate<? super Service> dependents, Predicate<? super Service> dependencies)	Specifies that all services that match the dependents predicate are dependent on all services that match the dependencies predicate.

Method Detail

dependsOn

ServiceDependenciesSpec dependsOn(Predicate<? super Service> dependents,
                                  Predicate<? super Service> dependencies)
                           throws Exception

Specifies that all services that match the dependents predicate are dependent on all services that match the dependencies predicate.

Parameters:

dependents - the criteria for dependent services

dependencies - the criteria for services they depend on

Returns:

this

Throws:

Exception - any thrown by either predicate

dependsOn

default <T1,T2> ServiceDependenciesSpec dependsOn(Class<T1> dependentsType,
                                                        Predicate<? super T1> dependents,
                                                        Class<T2> dependenciesType,
                                                        Predicate<? super T2> dependencies)
                                                 throws Exception

Specifies that all services that are of the given dependentsType that match the dependents predicate are dependent on all services that are of the dependenciesType that match the dependencies predicate.

Type Parameters:

T1 - the type of dependent services

T2 - the type of services they depend on

Parameters:

dependents - the criteria for dependent services

dependencies - the criteria for services they depend on

Returns:

this

Throws:

Exception - any thrown by either predicate

dependsOn

default ServiceDependenciesSpec dependsOn(Class<?> dependents,
                                          Class<?> dependencies)
                                   throws Exception

A convenience form of dependsOn(Predicate, Predicate) where the predicates are based on compatibility with the given types.

All services that are type compatible with the dependents type, will be considered dependents of all services that are type compatible with the dependencies type.

Use of this method is equivalent to annotating dependents with DependsOn with a value of dependencies. It can be useful in situations however where you are unable to modify the dependents class.

Parameters:

dependents - the type of dependent services

dependencies - the type of the services they depend on

Returns:

this

Throws:

Exception - any

See Also:

DependsOn