Class RequiredServicesComponentFeature

    • Constructor Detail

      • RequiredServicesComponentFeature

        public RequiredServicesComponentFeature​(IInternalAccess component,
                                                ComponentCreationInfo cinfo)
        Factory method constructor for instance level.
    • Method Detail

      • init

        public IFuture<java.lang.Void> init()
        Init the required services
        Specified by:
        init in interface IComponentFeature
        Overrides:
        init in class jadex.bridge.component.impl.AbstractComponentFeature
      • hasUserBody

        public boolean hasUserBody()
        Check if the feature potentially executed user code in body. Allows blocking operations in user bodies by using separate steps for each feature. Non-user-body-features are directly executed for speed. If unsure just return true. ;-)
        Specified by:
        hasUserBody in interface IComponentFeature
        Overrides:
        hasUserBody in class jadex.bridge.component.impl.AbstractComponentFeature
      • shutdown

        public IFuture<java.lang.Void> shutdown()
        Called when the feature is shutdowned.
        Specified by:
        shutdown in interface IComponentFeature
        Overrides:
        shutdown in class jadex.bridge.component.impl.AbstractComponentFeature
      • addRequiredServiceInfos

        protected void addRequiredServiceInfos​(RequiredServiceInfo[] requiredservices)
        Add required services for a given prefix.
        Parameters:
        prefix - The name prefix to use.
        required - services The required services to set.
      • getService

        public <T> IFuture<T> getService​(java.lang.String name)
        Resolve a declared required service of a given name. Asynchronous method for locally as well as remotely available services.
        Specified by:
        getService in interface IRequiredServicesFeature
        Parameters:
        name - The service name.
        Returns:
        The service.
      • getService

        public <T> IFuture<T> getService​(java.lang.Class<T> type)
        Resolve a required service of a given type. Asynchronous method for locally as well as remotely available services.
        Specified by:
        getService in interface IRequiredServicesFeature
        Parameters:
        type - The service type.
        Returns:
        The service.
      • getServices

        public <T> ITerminableIntermediateFuture<T> getServices​(java.lang.String name)
        Resolve a required services of a given name. Asynchronous method for locally as well as remotely available services.
        Specified by:
        getServices in interface IRequiredServicesFeature
        Parameters:
        name - The services name.
        Returns:
        Each service as an intermediate result and a collection of services as final result.
      • getServices

        public <T> ITerminableIntermediateFuture<T> getServices​(java.lang.Class<T> type)
        Resolve a required services of a given type. Asynchronous method for locally as well as remotely available services.
        Specified by:
        getServices in interface IRequiredServicesFeature
        Parameters:
        type - The services type.
        Returns:
        Each service as an intermediate result and a collection of services as final result.
      • getLocalService

        public <T> T getLocalService​(java.lang.String name)
        Resolve a declared required service of a given name. Synchronous method only for locally available services.
        Specified by:
        getLocalService in interface IRequiredServicesFeature
        Parameters:
        name - The service name.
        Returns:
        The service.
      • getLocalService

        public <T> T getLocalService​(java.lang.Class<T> type)
        Resolve a required service of a given type. Synchronous method only for locally available services.
        Specified by:
        getLocalService in interface IRequiredServicesFeature
        Parameters:
        type - The service type.
        Returns:
        The service.
      • getLocalService0

        public <T> T getLocalService0​(java.lang.Class<T> type)
        Resolve a required service of a given type. Synchronous method only for locally available services.
        Specified by:
        getLocalService0 in interface IRequiredServicesFeature
        Parameters:
        type - The service type.
        Returns:
        The service.
      • getLocalServices

        public <T> java.util.Collection<T> getLocalServices​(java.lang.String name)
        Resolve a required services of a given name. Synchronous method only for locally available services.
        Specified by:
        getLocalServices in interface IRequiredServicesFeature
        Parameters:
        name - The services name.
        Returns:
        Each service as an intermediate result and a collection of services as final result.
      • getLocalServices

        public <T> java.util.Collection<T> getLocalServices​(java.lang.Class<T> type)
        Resolve a required services of a given type. Synchronous method only for locally available services.
        Specified by:
        getLocalServices in interface IRequiredServicesFeature
        Parameters:
        type - The services type.
        Returns:
        Each service as an intermediate result and a collection of services as final result.
      • searchService

        public <T> IFuture<T> searchService​(ServiceQuery<T> query)
        Search for matching services and provide first result.
        Specified by:
        searchService in interface IExternalRequiredServicesFeature
        Parameters:
        query - The search query.
        Returns:
        Future providing the corresponding service or ServiceNotFoundException when not found.
      • searchLocalService

        public <T> T searchLocalService​(ServiceQuery<T> query)
        Search for matching services and provide first result. Synchronous method only for locally available services.
        Specified by:
        searchLocalService in interface IRequiredServicesFeature
        Parameters:
        query - The search query.
        Returns:
        Future providing the corresponding service or ServiceNotFoundException when not found.
      • searchLocalServices

        public <T> java.util.Collection<T> searchLocalServices​(ServiceQuery<T> query)
        Search for all matching services. Synchronous method only for locally available services.
        Specified by:
        searchLocalServices in interface IRequiredServicesFeature
        Parameters:
        query - The search query.
        Returns:
        Future providing the corresponding services or ServiceNotFoundException when not found.
      • searchService

        public <T> IFuture<T> searchService​(ServiceQuery<T> query,
                                            long timeout)
        Performs a sustained search for a service. Attempts to find a service for a maximum duration until timeout occurs.
        Specified by:
        searchService in interface IRequiredServicesFeature
        Parameters:
        query - The search query.
        timeout - Maximum time period to search, -1 for no wait.
        Returns:
        Service matching the query, exception if service is not found.
      • addQuery

        public <T> ISubscriptionIntermediateFuture<T> addQuery​(ServiceQuery<T> query,
                                                               long timeout)
        Add a query for a declared required service. Continuously searches for matching services.
        Specified by:
        addQuery in interface IRequiredServicesFeature
        Parameters:
        name - The name of the required service declaration.
        Returns:
        Future providing the corresponding services as intermediate results.
      • addQuery

        public <T> ISubscriptionIntermediateFuture<T> addQuery​(java.lang.String name)
        Add a query for a declared required service. Continuously searches for matching services.
        Specified by:
        addQuery in interface IRequiredServicesFeature
        Parameters:
        name - The name of the required service declaration.
        Returns:
        Future providing the corresponding services as intermediate results.
      • addQuery

        public <T> ISubscriptionIntermediateFuture<T> addQuery​(java.lang.Class<T> type)
        Add a query for a declared required service. Continuously searches for matching services.
        Specified by:
        addQuery in interface IRequiredServicesFeature
        Parameters:
        type - The type of the required service declaration.
        Returns:
        Future providing the corresponding services as intermediate results.
      • getRawService

        public <T> T getRawService​(java.lang.Class<T> type)
        Get a service raw (i.e. w/o required proxy).
        Specified by:
        getRawService in interface IInternalRequiredServicesFeature
        Returns:
        null when not found.
      • processResult

        protected java.lang.Object processResult​(java.lang.Object result,
                                                 RequiredServiceInfo info)
        Parameters:
        result -
        info -
        Returns:
      • resolveLocalService

        public <T> T resolveLocalService​(ServiceQuery<T> query,
                                         RequiredServiceInfo info)
        Search for matching services and provide first result. Synchronous method only for locally available services.
        Specified by:
        resolveLocalService in interface IInternalRequiredServicesFeature
        Parameters:
        query - The search query.
        info - Used for required service proxy configuration -> null for no proxy.
        Returns:
        Future providing the corresponding service or ServiceNotFoundException when not found.
      • resolveLocalServices

        public <T> java.util.Collection<T> resolveLocalServices​(ServiceQuery<T> query,
                                                                RequiredServiceInfo info)
        Search for all matching services. Synchronous method only for locally available services.
        Specified by:
        resolveLocalServices in interface IInternalRequiredServicesFeature
        Parameters:
        query - The search query.
        info - Used for required service proxy configuration -> null for no proxy.
        Returns:
        Future providing the corresponding services or ServiceNotFoundException when not found.
      • getServiceQuery

        protected <T> ServiceQuery<T> getServiceQuery​(RequiredServiceInfo info)
        When searching for declared service -> map required service declaration to service query.
      • getServiceInfo

        protected RequiredServiceInfo getServiceInfo​(java.lang.Class<?> type)
        Get the required service info for a type.
        Parameters:
        type - The required service type.
      • processServiceEvent

        protected ServiceEvent processServiceEvent​(ServiceEvent event,
                                                   RequiredServiceInfo info)
        Create the user-facing object from the received search or query result. Result may be service object, service identifier (local or remote), or event. User object is either event or service (with or without required proxy).
      • enhanceQuery

        protected <T> void enhanceQuery​(ServiceQuery<T> query,
                                        boolean multi)
        Enhance a query before processing. Does some necessary preprocessing and needs to be called at least once before processing the query.
        Parameters:
        query - The query to be enhanced.
      • isRemote

        public boolean isRemote​(ServiceQuery<?> query)
        Check if a query is potentially remote.
        Returns:
        True, if scope is set to a remote scope (e.g. global or network).