public object InjectFromPlan(InjectionPlan plan)
{
if (!plan.IsFeasible())
{
throw new InjectionException("Cannot inject " + plan.GetNode().GetFullName() + ": "
+ plan.ToCantInjectString());
}
if (plan.IsAmbiguous())
{
throw new InjectionException("Cannot inject " + plan.GetNode().GetFullName() + " "
+ plan.ToCantInjectString());
}
if (plan is InjectionFuturePlan)
{
InjectionFuturePlan fut = (InjectionFuturePlan)plan;
string key = fut.GetNode().GetFullName();
try
{
//we will see if we need to introduce T to replace object
InjectionFuture ret = new InjectionFuture(this, classHierarchy.ClassForName(fut.GetNode().GetFullName()));
pendingFutures.Add(ret);
return(ret);
}
catch (TypeLoadException e)
{
throw new InjectionException("Could not get class for " + key);
}
}
else if (plan.GetNode() is IClassNode && null != GetCachedInstance((IClassNode)plan.GetNode()))
{
return(GetCachedInstance((IClassNode)plan.GetNode()));
}
else if (plan is CsInstance)
{
// TODO: Must be named parameter node. Check.
// throw new IllegalStateException("Instance from plan not in Injector's set of instances?!?");
return(((CsInstance)plan).instance);
}
else if (plan is Constructor)
{
Constructor constructor = (Constructor)plan;
object[] args = new object[constructor.GetArgs().Length];
InjectionPlan[] argPlans = constructor.GetArgs();
for (int i = 0; i < argPlans.Length; i++)
{
args[i] = InjectFromPlan(argPlans[i]);
}
try
{
concurrentModificationGuard = true;
object ret;
try
{
IConstructorDef def = (IConstructorDef)constructor.GetConstructorDef();
ConstructorInfo c = GetConstructor(def);
if (aspect != null)
{
ret = aspect.Inject(def, c, args);
}
else
{
ret = c.Invoke(args);
}
}
catch (ArgumentException e)
{
StringBuilder sb = new StringBuilder("Internal Tang error? Could not call constructor " + constructor.GetConstructorDef() + " with arguments [");
foreach (Object o in args)
{
sb.Append("\n\t" + o);
}
sb.Append("]");
throw new IllegalStateException(sb.ToString(), e);
}
if (ret is IExternalConstructor)
{
ret = ((IExternalConstructor)ret).NewInstance();
}
instances.Add(constructor.GetNode(), ret);
return(ret);
}
catch (Exception e)
{
throw new InjectionException("Could not invoke constructor: " + plan, e); //check what exception might be got and refine it
} finally
{
concurrentModificationGuard = false;
}
}
else if (plan is Subplan)
{
Subplan ambiguous = (Subplan)plan;
return(InjectFromPlan(ambiguous.GetDelegatedPlan()));
}
else if (plan is SetInjectionPlan)
{
SetInjectionPlan setPlan = (SetInjectionPlan)plan;
ISet <object> ret = new MonotonicSet <object>();
foreach (InjectionPlan subplan in setPlan.GetEntryPlans())
{
ret.Add(InjectFromPlan(subplan));
}
return(ret);
}
else
{
throw new IllegalStateException("Unknown plan type: " + plan);
}
}
public object InjectFromPlan(InjectionPlan plan)
{
if (!plan.IsFeasible())
{
var ex = new InjectionException("Cannot inject " + plan.GetNode().GetFullName() + ": "
+ plan.ToCantInjectString());
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(ex, LOGGER);
}
if (plan.IsAmbiguous())
{
var ex = new InjectionException("Cannot inject " + plan.GetNode().GetFullName() + " "
+ plan.ToCantInjectString());
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(ex, LOGGER);
}
if (plan is InjectionFuturePlan)
{
InjectionFuturePlan fut = (InjectionFuturePlan)plan;
INode node = fut.GetNode();
string key = node.GetFullName();
try
{
Type t = null;
Type nodeType = classHierarchy.ClassForName(node.GetFullName());
if (node is IClassNode)
{
t = nodeType;
}
else if (node is INamedParameterNode)
{
var nn = (INamedParameterNode)node;
t = classHierarchy.ClassForName(nn.GetFullArgName());
if (nn.IsSet())
{
t = typeof(ISet <>).MakeGenericType(new Type[] { t });
}
}
else
{
var ex = new ApplicationException("Unexpected node type. Wanted ClassNode or NamedParameterNode. Got: " + node);
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(ex, LOGGER);
}
// Java - InjectionFuture<?> ret = new InjectionFuture<>(this, javaNamespace.classForName(fut.getNode().getFullName()));
// C# - InjectionFuture<object> ret = new InjectionFutureImpl<object>(this, classHierarchy.ClassForName(fut.GetNode().GetFullName()));
// We cannot simply create an object from generic with object as <T>
// typeof(InjectionFutureImpl<>).MakeGenericType(t) will get the InjectionFutureImpl generic Type with <T> as t
// for ClassNode, t is the Type of the class, for NamedParameterNode, t is the Type of the argument
// we then use reflection to invoke the constructor
// To retain generic argument information??
Type injectionFuture = typeof(InjectionFutureImpl <>).MakeGenericType(t);
var constructor = injectionFuture.GetConstructor(new Type[] { typeof(IInjector), typeof(Type) });
IInjectionFuture <object> ret = (IInjectionFuture <object>)constructor.Invoke(new object[] { this, nodeType });
pendingFutures.Add(ret);
return(ret);
}
catch (TypeLoadException e)
{
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Caught(e, Level.Error, LOGGER);
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new InjectionException("Could not get class for " + key), LOGGER);
}
}
else if (plan.GetNode() is IClassNode && null != GetCachedInstance((IClassNode)plan.GetNode()))
{
return(GetCachedInstance((IClassNode)plan.GetNode()));
}
else if (plan is CsInstance)
{
// TODO: Must be named parameter node. Check.
// throw new IllegalStateException("Instance from plan not in Injector's set of instances?!?");
return(((CsInstance)plan).instance);
}
else if (plan is Constructor)
{
Constructor constructor = (Constructor)plan;
object[] args = new object[constructor.GetArgs().Length];
InjectionPlan[] argPlans = constructor.GetArgs();
for (int i = 0; i < argPlans.Length; i++)
{
args[i] = InjectFromPlan(argPlans[i]);
}
try
{
concurrentModificationGuard = true;
object ret = null;
try
{
IConstructorDef def = (IConstructorDef)constructor.GetConstructorDef();
ConstructorInfo c = GetConstructor(def);
if (aspect != null)
{
ret = aspect.Inject(def, c, args);
}
else
{
ret = c.Invoke(args);
}
}
catch (ArgumentException e)
{
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Caught(e, Level.Error, LOGGER);
StringBuilder sb = new StringBuilder("Internal Tang error? Could not call constructor " + constructor.GetConstructorDef() + " with arguments [");
foreach (object o in args)
{
sb.Append("\n\t" + o);
}
sb.Append("]");
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new IllegalStateException(sb.ToString(), e), LOGGER);
}
if (ret is IExternalConstructor <object> )
{
ret = ((IExternalConstructor <object>)ret).NewInstance();
}
instances.Add(constructor.GetNode(), ret);
return(ret);
}
catch (TargetInvocationException e)
{
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Caught(e, Level.Error, LOGGER);
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new InjectionException("Could not invoke constructor: " + plan, e), LOGGER);
}
finally
{
concurrentModificationGuard = false;
}
}
else if (plan is Subplan)
{
Subplan ambiguous = (Subplan)plan;
return(InjectFromPlan(ambiguous.GetDelegatedPlan()));
}
else if (plan is SetInjectionPlan)
{
SetInjectionPlan setPlan = (SetInjectionPlan)plan;
INode n = setPlan.GetNode();
string typeOfSet = null;
// TODO: This doesn't work for sets of generics (e.g., Set<Foo<int>>
// because GetFullName and GetFullArgName strip generic info).
if (n is INamedParameterNode)
{
INamedParameterNode np = (INamedParameterNode)n;
typeOfSet = np.GetFullArgName();
}
else if (n is IClassNode)
{
typeOfSet = n.GetFullName();
}
else
{
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new ApplicationException("Unknown node type :" + n.ToString()), LOGGER);
}
Type t = classHierarchy.ClassForName(typeOfSet);
// MakeGenericType(t = int: MonotonicHashSet<> -> MonotonicHashSet<int>
// Get constructor: MonotonicHashSet<int> -> public MonotonicHashSet<int>() { ... }
// Invoke: public MonotonicHashSet<int> -> new MonotonicHashSet<int>()
object ret = typeof(MonotonicHashSet <>).MakeGenericType(t).GetConstructor(new Type[] { }).Invoke(new object[] { }); // (this, classHierarchy.ClassForName(fut.GetNode().GetFullName()));
MethodInfo mf = ret.GetType().GetMethod("Add");
foreach (InjectionPlan subplan in setPlan.GetEntryPlans())
{
// ret.Add(InjectFromPlan(subplan));
mf.Invoke(ret, new object[] { InjectFromPlan(subplan) });
}
return(ret);
}
else if (plan is ListInjectionPlan)
{
ListInjectionPlan listPlan = (ListInjectionPlan)plan;
INode n = listPlan.GetNode();
string typeOfList = null;
if (n is INamedParameterNode)
{
INamedParameterNode np = (INamedParameterNode)n;
typeOfList = np.GetFullArgName();
}
else if (n is IClassNode)
{
typeOfList = n.GetFullName();
}
else
{
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new ApplicationException("Unknown node type :" + n.ToString()), LOGGER);
}
Type t = classHierarchy.ClassForName(typeOfList);
object ret = typeof(List <>).MakeGenericType(t).GetConstructor(new Type[] { }).Invoke(new object[] { });
MethodInfo mf = ret.GetType().GetMethod("Add");
foreach (InjectionPlan subplan in listPlan.GetEntryPlans())
{
mf.Invoke(ret, new object[] { InjectFromPlan(subplan) });
}
return(ret);
}
else
{
Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new IllegalStateException("Unknown plan type: " + plan), LOGGER);
}
return(null); // should never reach here
}