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DI: pass-through arbitrary arguments for initialisation of a ServiceInstance

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...this part is a no-brainer.
However, it is not clear yet if we can (and want to) do something similar for deferred (lazy) instance creation
This commit is contained in:
Fischlurch 2018-03-22 04:19:33 +01:00
parent 5c39498929
commit e74576f6b0
2 changed files with 40 additions and 10 deletions
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7
src/lib/depend-inject.hpp
View file

@ -40,12 +40,14 @@
#include "lib/sync-classlock.hpp"
#include <type_traits>
#include <utility>
#include <memory>
namespace lib {
namespace error = lumiera::error;
using std::forward;
using std::move;
@ -108,8 +110,9 @@ namespace lib {
std::unique_ptr<IMP> instance_;
public:
ServiceInstance()
: instance_(new IMP{})
template<typename...ARGS>
ServiceInstance(ARGS&& ...ctorArgs)
: instance_(new IMP(forward<ARGS> (ctorArgs)...))
{
__assert_compatible<IMP>();
activateServiceAccess (*instance_);

43
wiki/thinkPad.ichthyo.mm
View file

@ -26809,7 +26809,8 @@
<icon BUILTIN="button_ok"/>
</node>
</node>
<node CREATED="1521208257336" ID="ID_1129640741" MODIFIED="1521208261323" TEXT="ServiceInstance">
<node COLOR="#338800" CREATED="1521208257336" ID="ID_1129640741" MODIFIED="1521688342829" TEXT="ServiceInstance">
<icon BUILTIN="button_ok"/>
<node COLOR="#338800" CREATED="1521208859989" ID="ID_549061661" MODIFIED="1521387920055" TEXT="Lazy-Init-Factory deaktivieren">
<icon BUILTIN="button_ok"/>
</node>
@ -26839,7 +26840,26 @@
<node COLOR="#338800" CREATED="1521208724943" ID="ID_1527628667" MODIFIED="1521335442003" TEXT="smart-ptr-artiger Zugriff auf die Service-Impl">
<icon BUILTIN="button_ok"/>
</node>
<node CREATED="1521208339124" ID="ID_1092066450" MODIFIED="1521387948246" TEXT="(optional)Closure &#xfc;ber konkreten Ctor"/>
<node CREATED="1521208339124" ID="ID_1092066450" MODIFIED="1521688307817" TEXT="(optional)Closure &#xfc;ber konkreten Ctor">
<icon BUILTIN="button_cancel"/>
<node CREATED="1521688310369" ID="ID_1697840327" MODIFIED="1521688369496" TEXT="sinnlos">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
sie werden ja sofort ausgewertet, da die Service-Instanz unmittelbar gebaut wird
</p>
</body>
</html>
</richcontent>
<icon BUILTIN="ksmiletris"/>
</node>
<node COLOR="#338800" CREATED="1521688321599" ID="ID_764253251" MODIFIED="1521688339230" TEXT="stattdessen: ctor-Argumente forwarden">
<icon BUILTIN="button_ok"/>
</node>
</node>
</node>
<node CREATED="1521208261887" ID="ID_384054163" MODIFIED="1521208264827" TEXT="Local">
<node CREATED="1521209044203" ID="ID_1994153994" MODIFIED="1521409010023" TEXT="(optional)Closure mit speziellen Argumenten "/>
@ -27193,16 +27213,23 @@
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521160691830" ID="ID_53329830" MODIFIED="1521160718843" TEXT="Implementierung ausf&#xfc;hren">
<icon BUILTIN="flag-yellow"/>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521418559868" ID="ID_592269917" MODIFIED="1521418569579" TEXT="Depend&lt;SRV&gt; Front-End">
<icon BUILTIN="flag-yellow"/>
<node COLOR="#338800" CREATED="1521418559868" ID="ID_592269917" MODIFIED="1521688403021" TEXT="Depend&lt;SRV&gt; Front-End">
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521418571594" ID="ID_1432227459" MODIFIED="1521418597112" TEXT="DependInject&lt;SRV&gt; ersetzt dependency-factory.hpp">
<icon BUILTIN="flag-yellow"/>
<node COLOR="#338800" CREATED="1521418571594" ID="ID_1432227459" MODIFIED="1521688407751" TEXT="DependInject&lt;SRV&gt; ersetzt dependency-factory.hpp">
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521418598463" ID="ID_237484313" MODIFIED="1521418617389" TEXT="Objekterzeugung erweitern">
<icon BUILTIN="flag-yellow"/>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521418618052" ID="ID_1253147848" MODIFIED="1521418626516" TEXT="auf beliebige Argumente">
<icon BUILTIN="flag-yellow"/>
<node COLOR="#990000" CREATED="1521418618052" ID="ID_1253147848" MODIFIED="1521688468798" TEXT="auf beliebige Argumente">
<icon BUILTIN="stop-sign"/>
<node CREATED="1521688471643" ID="ID_1037697154" MODIFIED="1521688504558" TEXT="gef&#xe4;hrlich wenn Objekterzeugung lazy">
<icon BUILTIN="messagebox_warning"/>
</node>
<node CREATED="1521688505734" ID="ID_1656307893" MODIFIED="1521688520760" TEXT="der Client sieht ja nicht, wie wir die Argumente speichern"/>
<node CREATED="1521688524620" ID="ID_480802115" MODIFIED="1521688537015" TEXT="sinnvoll nur im Fall Service-Instanz">
<icon BUILTIN="button_ok"/>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521418627130" ID="ID_206705145" MODIFIED="1521418639801" TEXT="auf allgemeine Closures">
<icon BUILTIN="flag-yellow"/>