izzum\statemachine\StateMachine::setContext PHP Method

StateMachine Class Documentation Show file Open project: rolfvreijdenberger/izzum-statemachine

setContext() public method

change the context for a statemachine that already has a context. When the context is changed, but it is for the same statemachine (with the same transitions), the statemachine can be used directly with the new context. The current state is reset to whatever state the machine should be in (either the initial state or the stored state) whenever a context change is made. we can change context to: - switch builders/persistence adapters at runtime - reuse the statemachine for a different entity so we do not have to load the statemachine with the same transition definitions

public setContext ( Context $context )
$context	Context

    public function setContext(Context $context)
    {
        if ($this->getContext()) {
            // context already exists.
            if ($this->getContext()->getMachine() !== $context->getMachine()) {
                throw new Exception(sprintf("Trying to set context for a different machine. currently '%s' and new '%s'", $this->getContext()->getMachine(), $context->getMachine()), Exception::SM_CONTEXT_DIFFERENT_MACHINE);
            }
            // reset state TODO: move outside if statement
            $this->state = null;
        }
        $context->setStateMachine($this);
        $this->context = $context;
    }

StateMachine

__call

__construct

__toString

_onCheckCanTransition

_onEnterState

_onExitState

_onTransition

add

addState

addTransition

addTransitionWithoutRegex