AbstractCommandFunction

abstract class AbstractCommandFunction<C : Any>(val commandAggregate: CommandAggregate<C, *>, afterCommandFunctions: List<AfterCommandFunction<C>>) : MessageFunction<C, ServerCommandExchange<*>, Mono<DomainEventStream>>

Abstract base class for command functions that handle command processing with after-command functions.

This class provides the framework for executing commands and their associated after-command functions, combining their results into a domain event stream.

Parameters

C

The type of the command aggregate.

Inheritors

Constructors

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constructor(commandAggregate: CommandAggregate<C, *>, afterCommandFunctions: List<AfterCommandFunction<C>>)

Creates a new AbstractCommandFunction with the specified command aggregate and after functions.

Properties

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The command aggregate instance this function belongs to.

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abstract val contextName: String
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abstract override val name: String
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abstract val processor: C

The processor instance that contains the actual business logic for handling messages.

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open override val processorName: String

The name of the processor class, derived from the simple name of the processor's class.

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open override val qualifiedName: String

The fully qualified name of the function, formatted as "processorName.functionName(supportedTypeSimpleName)". This provides a unique identifier for the function.

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The set of named aggregates (topics) that this function supports. The function will only process messages that match one of these aggregates.

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abstract val supportedType: Class<*>

The class type of message bodies that this function can process. Used to determine if a message is supported by checking if the message body is an instance of this type.

Functions

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abstract fun <A : Annotation> getAnnotation(annotationClass: Class<A>): A?

Retrieves an annotation of the specified type from the function's metadata.

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fun NamedBoundedContext.getContextAlias(boundedContext: BoundedContext? = MetadataSearcher.metadata.contexts[contextName]): String
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Gets the context alias prefix for this bounded context.

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open fun handle(exchange: ServerCommandExchange<*>): Mono<DomainEventStream>

Handles the message exchange by invoking the function. This method provides an alternative way to process the exchange.

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open operator override fun invoke(exchange: ServerCommandExchange<*>): Mono<DomainEventStream>

Invokes the command function and returns a domain event stream.

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abstract fun invokeCommand(exchange: ServerCommandExchange<*>): Mono<*>

Invokes the main command logic.

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open fun isEmpty(): Boolean
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open fun isSameFunction(functionInfo: FunctionInfo): Boolean
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Checks if a function matches the criteria specified by this NamedFunctionInfo. Used to determine if a wait strategy should be notified about a specific function execution. Returns true if all specified criteria (context, processor, name) match or are not specified.

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Checks if the given message is supported by this function. A message is supported if its body is an instance of the supported type and its aggregate matches one of the supported topics.

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fun FunctionInfo.toWaitSignal(id: String, waitCommandId: String, commandId: String, aggregateId: AggregateId, stage: CommandStage, isLastProjection: Boolean = false, aggregateVersion: Int? = null, errorCode: String = ErrorCodes.SUCCEEDED, errorMsg: String = ErrorCodes.SUCCEEDED_MESSAGE, bindingErrors: List<BindingError> = emptyList(), result: Map<String, Any> = emptyMap(), commands: List<String> = listOf(), signalTime: Long = System.currentTimeMillis()): WaitSignal