| Class and Description | 
|---|
| QueryInvocationErrorHandler
 Interface describing a mechanism for the QueryMessage components to report errors. 
 | 
| SimpleQueryBus
 Implementation of the QueryBus that dispatches queries to the handlers within the JVM. 
 | 
| Class and Description | 
|---|
| QueryBus
 The mechanism that dispatches Query objects to their appropriate QueryHandlers. 
 | 
| QueryGateway
 Interface towards the Query Handling components of an application. 
 | 
| Class and Description | 
|---|
| QueryMessage
 Message type that carries a Query: a request for information. 
 | 
| Class and Description | 
|---|
| QueryBus
 The mechanism that dispatches Query objects to their appropriate QueryHandlers. 
 | 
| QueryGateway
 Interface towards the Query Handling components of an application. 
 | 
| QueryInvocationErrorHandler
 Interface describing a mechanism for the QueryMessage components to report errors. 
 | 
| QueryMessage
 Message type that carries a Query: a request for information. 
 | 
| QueryResponseMessage
 Message that contains the results of a Query. 
 | 
| Class and Description | 
|---|
| QueryBus
 The mechanism that dispatches Query objects to their appropriate QueryHandlers. 
 | 
| QueryHandlerAdapter
 Describes a class capable of subscribing to the query bus. 
 | 
| QueryMessage
 Message type that carries a Query: a request for information. 
 | 
| Class and Description | 
|---|
| QueryBus
 The mechanism that dispatches Query objects to their appropriate QueryHandlers. 
 | 
| QueryGateway
 Interface towards the Query Handling components of an application. 
 | 
| QueryHandlerAdapter
 Describes a class capable of subscribing to the query bus. 
 | 
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