Module org.fuin.cqrs4j
Package org.fuin.cqrs4j

Interface CommandExecutor<CONTEXT,RESULT,CMD extends Command>

Type Parameters:
CONTEXT - Type of context for the command execution.
RESULT - Result of the command execution.
CMD - Type of command to execute.
All Known Implementing Classes:
AbstractMultiCommandExecutor, MultiCommandExecutor
public interface CommandExecutor<CONTEXT,RESULT,CMD extends Command>
Executes one or more commands.

  • Method Summary

    Modifier and Type
    Method
    Description
    RESULT
    execute(CONTEXT ctx, CMD cmd)
    Executes the given command.
    @NotNull Set<org.fuin.ddd4j.ddd.EventType>
    getCommandTypes()
    Returns a list of commands this executor can handle.

  • Method Details

    • getCommandTypes

      @NotNull @NotNull Set<org.fuin.ddd4j.ddd.EventType> getCommandTypes()
      Returns a list of commands this executor can handle.
      Returns:
      List of unique command types.

    • execute

      RESULT execute(@NotNull CONTEXT ctx, @NotNull CMD cmd) throws org.fuin.ddd4j.ddd.AggregateVersionConflictException, org.fuin.ddd4j.ddd.AggregateNotFoundException, org.fuin.ddd4j.ddd.AggregateVersionNotFoundException, org.fuin.ddd4j.ddd.AggregateDeletedException, org.fuin.ddd4j.ddd.AggregateAlreadyExistsException, CommandExecutionFailedException
      Executes the given command. Only the main aggregate related exceptions are modeled via throws. All other checked exceptions must be wrapped into a CommandExecutionFailedException.
      Parameters:
      ctx - Context of the execute.
      cmd - Command to execute.
      Returns:
      Result.
      Throws:
      org.fuin.ddd4j.ddd.AggregateVersionConflictException - There is a conflict between an expected and an actual version for the aggregate targeted by the command.
      org.fuin.ddd4j.ddd.AggregateNotFoundException - The aggregate targeted by the command with a given type and identifier was not found in the repository.
      org.fuin.ddd4j.ddd.AggregateVersionNotFoundException - The requested version for the aggregate targeted by the command does not exist.
      org.fuin.ddd4j.ddd.AggregateDeletedException - The aggregate targeted by the command was deleted from the repository.
      org.fuin.ddd4j.ddd.AggregateAlreadyExistsException - The aggregate targeted by the command already exists when trying to create it.
      CommandExecutionFailedException - Other checked exceptions are wrapped into this one.