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 NamedParamterNode, 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
}
private void BuildInjectionPlan(INode n, IDictionary <INode, InjectionPlan> memo)
{
if (memo.ContainsKey(n))
{
InjectionPlan p = null;
memo.TryGetValue(n, out p);
if (BUILDING == p)
{
StringBuilder loopyList = new StringBuilder("[");
foreach (INode node in memo.Keys)
{
InjectionPlan p1 = null;
memo.TryGetValue(node, out p1);
if (p1 == BUILDING)
{
loopyList.Append(" " + node.GetFullName());
}
}
loopyList.Append(" ]");
var ex = new ClassHierarchyException("Detected loopy constructor involving "
+ loopyList.ToString());
Org.Apache.Reef.Utilities.Diagnostics.Exceptions.Throw(ex, LOGGER);
}
else
{
return;
}
}
memo.Add(n, BUILDING);
InjectionPlan ip = null;
if (n is INamedParameterNode)
{
INamedParameterNode np = (INamedParameterNode)n;
object boundInstance = ParseBoundNamedParameter(np);
object defaultInstance = this.classHierarchy.ParseDefaultValue(np);
object instance = boundInstance != null ? boundInstance : defaultInstance;
if (instance is INode)
{
BuildInjectionPlan((INode)instance, memo);
InjectionPlan sp;
memo.TryGetValue((INode)instance, out sp);
ip = new Subplan(n, 0, new InjectionPlan[] { sp });
}
else if (instance is ISet <object> )
{
ISet <object> entries = (ISet <object>)instance;
ip = CreateSetInjectionPlan(n, memo, entries);
}
else if (instance is ISet <INode> )
{
ISet <INode> entries = (ISet <INode>)instance;
ip = CreateSetInjectionPlan(n, memo, entries);
}
else if (instance is IList <object> )
{
IList <object> entries = (IList <object>)instance;
ip = CreateListInjectionPlan(n, memo, entries);
}
else if (instance is IList <INode> )
{
IList <INode> entries = (IList <INode>)instance;
ip = CreateListInjectionPlan(n, memo, entries);
}
else
{
ip = new CsInstance(np, instance);
}
}
else if (n is IClassNode)
{
IClassNode cn = (IClassNode)n;
// Any (or all) of the next four values might be null; that's fine.
object cached = GetCachedInstance(cn);
IClassNode boundImpl = this.configuration.GetBoundImplementation(cn);
IClassNode defaultImpl = ParseDefaultImplementation(cn);
IClassNode ec = this.configuration.GetBoundConstructor(cn);
ip = BuildClassNodeInjectionPlan(cn, cached, ec, boundImpl, defaultImpl, memo);
}
else if (n is IPackageNode)
{
Org.Apache.Reef.Utilities.Diagnostics.Exceptions.Throw(new ArgumentException(
"Request to instantiate Java package as object"), LOGGER);
}
else
{
Org.Apache.Reef.Utilities.Diagnostics.Exceptions.Throw(new IllegalStateException(
"Type hierarchy contained unknown node type!:" + n), LOGGER);
}
memo[n] = ip;
}