Package de.quantummaid.eventmaid.qcec.queryresolving

Class QueryResolverImpl

java.lang.Object

de.quantummaid.eventmaid.qcec.queryresolving.QueryResolverImpl

All Implemented Interfaces:

QueryResolver

public class QueryResolverImpl
extends Object
implements QueryResolver

Method Summary

Modifier and Type	Method	Description
<T extends Query<?>> SubscriptionId	answer(Class<T> queryClass, Consumer<T> responder)	Adds a new Consumer as Subscriber forthe given Query class.
<R> Optional<R>	query(Query<R> query)	Sends the Query to all interested Subscribers.
<R> R	queryRequired(Query<R> query)	Sends the Query to all interested Subscribers.
void	unsubscribe(SubscriptionId subscriptionId)	Method to remove all Consumer matching the SubscriptionId.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

answer

public <T extends Query<?>> SubscriptionId answer(Class<T> queryClass,
                                                  Consumer<T> responder)

Description copied from interface: QueryResolver

Adds a new Consumer as Subscriber forthe given Query class.

Specified by:

answer in interface QueryResolver

Type Parameters:

T - the type of the query

Parameters:

queryClass - the class of the Query

responder - the Consumer to answer the query

Returns:

a SubscriptionId of the Subscriber

query

public <R> Optional<R> query(Query<R> query)

Description copied from interface: QueryResolver

Sends the Query to all interested Subscribers. This method does not need to return an result.

Specified by:

query in interface QueryResolver

Type Parameters:

R - the type of the result

Parameters:

query - the Query to be sent

Returns:

an Optional for the Query result

queryRequired

public <R> R queryRequired(Query<R> query)

Description copied from interface: QueryResolver

Sends the Query to all interested Subscribers. This method expects a valid result.

Specified by:

queryRequired in interface QueryResolver

Type Parameters:

R - the type of the result

Parameters:

query - the Query to be sent

Returns:

the Query result

unsubscribe

public void unsubscribe(SubscriptionId subscriptionId)

Description copied from interface: QueryResolver

Method to remove all Consumer matching the SubscriptionId.

Specified by:

unsubscribe in interface QueryResolver

Parameters:

subscriptionId - the SubscriptionId to remove