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Use instantiation context to decide whether to autowire or not

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Mike Bierlee 2015-01-25 19:46:17 +01:00
parent 9d931f511b
commit 5ebb5805cf
3 changed files with 29 additions and 16 deletions
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17
source/poodinis/autowire.d
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@ -92,9 +92,20 @@ class AutowiredRegistration(RegistrationType : Object) : Registration {
super(registeredType, typeid(RegistrationType)); super(registeredType, typeid(RegistrationType));
} }
public override Object getInstance() { public override Object getInstance(InstantiationContext context = new AutowireInstantiationContext()) {
RegistrationType instance = cast(RegistrationType) super.getInstance(); RegistrationType instance = cast(RegistrationType) super.getInstance(context);
container.autowire(instance);
AutowireInstantiationContext autowireContext = cast(AutowireInstantiationContext) context;
enforce(!(autowireContext is null), "Given instantiation context type could not be cast to an AutowireInstantiationContext. If you relied on using the default assigned context: make sure you're calling getInstance() on an instance of type AutowiredRegistration!");
if (autowireContext.autowireInstance) {
container.autowire(instance);
}
return instance; return instance;
} }
}
class AutowireInstantiationContext : InstantiationContext {
public bool autowireInstance = true;
} }

26
source/poodinis/registration.d
View file

@ -16,17 +16,17 @@ class Registration {
TypeInfo registeredType = null; TypeInfo registeredType = null;
TypeInfo_Class instantiatableType = null; TypeInfo_Class instantiatableType = null;
CreationScope registationScope = null; CreationScope registationScope = null;
this(TypeInfo registeredType, TypeInfo_Class instantiatableType) { this(TypeInfo registeredType, TypeInfo_Class instantiatableType) {
this.registeredType = registeredType; this.registeredType = registeredType;
this.instantiatableType = instantiatableType; this.instantiatableType = instantiatableType;
} }
public Object getInstance() { public Object getInstance(InstantiationContext context = new InstantiationContext()) {
if (registationScope is null) { if (registationScope is null) {
throw new NoScopeDefinedException(registeredType); throw new NoScopeDefinedException(registeredType);
} }
return registationScope.getInstance(); return registationScope.getInstance();
} }
} }
@ -53,11 +53,11 @@ class NullScope : CreationScope {
class SingleInstanceScope : CreationScope { class SingleInstanceScope : CreationScope {
TypeInfo_Class instantiatableType = null; TypeInfo_Class instantiatableType = null;
Object instance = null; Object instance = null;
this(TypeInfo_Class instantiatableType) { this(TypeInfo_Class instantiatableType) {
this.instantiatableType = instantiatableType; this.instantiatableType = instantiatableType;
} }
public Object getInstance() { public Object getInstance() {
if (instance is null) { if (instance is null) {
debug(poodinisVerbose) { debug(poodinisVerbose) {
@ -69,8 +69,8 @@ class SingleInstanceScope : CreationScope {
writeln(format("DEBUG: Existing instance returned of type %s (SingleInstanceScope)", instantiatableType.toString())); writeln(format("DEBUG: Existing instance returned of type %s (SingleInstanceScope)", instantiatableType.toString()));
} }
} }
return instance; return instance;
} }
} }
@ -82,11 +82,11 @@ public Registration singleInstance(Registration registration) {
class NewInstanceScope : CreationScope { class NewInstanceScope : CreationScope {
TypeInfo_Class instantiatableType = null; TypeInfo_Class instantiatableType = null;
this(TypeInfo_Class instantiatableType) { this(TypeInfo_Class instantiatableType) {
this.instantiatableType = instantiatableType; this.instantiatableType = instantiatableType;
} }
public Object getInstance() { public Object getInstance() {
debug(poodinisVerbose) { debug(poodinisVerbose) {
writeln(format("DEBUG: Creating new instance of type %s (SingleInstanceScope)", instantiatableType.toString())); writeln(format("DEBUG: Creating new instance of type %s (SingleInstanceScope)", instantiatableType.toString()));
@ -102,11 +102,11 @@ public Registration newInstance(Registration registration) {
class ExistingInstanceScope : CreationScope { class ExistingInstanceScope : CreationScope {
Object instance = null; Object instance = null;
this(Object instance) { this(Object instance) {
this.instance = instance; this.instance = instance;
} }
public Object getInstance() { public Object getInstance() {
debug(poodinisVerbose) { debug(poodinisVerbose) {
writeln("DEBUG: Existing instance returned (ExistingInstanceScope)"); writeln("DEBUG: Existing instance returned (ExistingInstanceScope)");
@ -130,3 +130,5 @@ public string toConcreteTypeListString(Registration[] registrations) {
} }
return concreteTypeListString; return concreteTypeListString;
} }
class InstantiationContext {}

2
test/poodinis/autowiretest.d
View file

@ -179,7 +179,7 @@ version(unittest) {
container.register!ComponentA; container.register!ComponentA;
auto registration = new AutowiredRegistration!ComponentB(typeid(ComponentB), container).singleInstance(); auto registration = new AutowiredRegistration!ComponentB(typeid(ComponentB), container).singleInstance();
auto instance = cast(ComponentB) registration.getInstance(); auto instance = cast(ComponentB) registration.getInstance(new AutowireInstantiationContext());
assert(!instance.componentIsNull()); assert(!instance.componentIsNull());
} }