/// <summary>
/// Resolves a dependency.
/// </summary>
/// <param name="typeToResolve">The type to be resolved.</param>
/// <param name="typeToCreate">The type to be created, if the type cannot be resolved
/// (and notPresent is set to <see cref="NotPresentBehavior.CreateNew"/>).</param>
/// <param name="id">The ID of the object to be resolved. Pass null for the unnamed object.</param>
/// <param name="notPresent">Flag to describe how to behave if the dependency is not found.</param>
/// <param name="searchMode">Flag to describe whether searches are local only, or local and up.</param>
/// <returns>The dependent object. If the object is not found, and notPresent
/// is set to <see cref="NotPresentBehavior.ReturnNull"/>, will return null.</returns>
public object Resolve(Type typeToResolve, Type typeToCreate, string id, NotPresentBehavior notPresent, SearchMode searchMode)
{
if (typeToResolve == null)
throw new ArgumentNullException("typeToResolve");
if (!Enum.IsDefined(typeof(NotPresentBehavior), notPresent))
throw new ArgumentException(Properties.Resources.InvalidEnumerationValue, "notPresent");
if (typeToCreate == null)
typeToCreate = typeToResolve;
DependencyResolutionLocatorKey key = new DependencyResolutionLocatorKey(typeToResolve, id);
if (context.Locator.Contains(key, searchMode))
return context.Locator.Get(key, searchMode);
switch (notPresent)
{
case NotPresentBehavior.CreateNew:
return context.HeadOfChain.BuildUp(context, typeToCreate, null, key.ID);
case NotPresentBehavior.ReturnNull:
return null;
default:
throw new DependencyMissingException(
string.Format(CultureInfo.CurrentCulture,
Properties.Resources.DependencyMissing, typeToResolve.ToString()));
}
}
public static object Resolve(IBuilderContext context,
object buildKey,
NotPresentBehavior behavior)
{
Guard.ArgumentNotNull(context, "context");
Guard.ArgumentNotNull(buildKey, "buildKey");
if (context.Locator.Contains(buildKey))
{
return(context.Locator.Get(buildKey));
}
switch (behavior)
{
case NotPresentBehavior.Build:
return(context.HeadOfChain.BuildUp(context, buildKey, null));
case NotPresentBehavior.Null:
return(null);
case NotPresentBehavior.Throw:
throw new DependencyMissingException(buildKey);
default:
throw new ArgumentException("Unknown NotPresentBehavior " + behavior);
}
}
public static object Resolve(IBuilderContext context,
object buildKey,
NotPresentBehavior behavior)
{
Guard.ArgumentNotNull(context, "context");
Guard.ArgumentNotNull(buildKey, "buildKey");
if (context.Locator.Contains(buildKey))
{
return(context.Locator.Get(buildKey));
}
switch (behavior)
{
case NotPresentBehavior.Build:
IBuilderContext recursiveContext = context.CloneForNewBuild(buildKey, null);
return(recursiveContext.Strategies.ExecuteBuildUp(recursiveContext));
case NotPresentBehavior.Null:
return(null);
case NotPresentBehavior.Throw:
throw new DependencyMissingException(buildKey);
default:
throw new ArgumentException(
string.Format(CultureInfo.CurrentCulture,
Resources.UnknownNotPresentBehavior,
behavior));
}
}
public DependencyParameter(Type parameterType, string name, Type createType, NotPresentBehavior notPresentBehavior, SearchMode searchMode) : base(parameterType)
{
this.name = name;
this.createType = createType;
this.notPresentBehavior = notPresentBehavior;
this.searchMode = searchMode;
}
/// <summary>
/// Initializes a new instance of the <see cref="DependencyParameter"/> class using the
/// provided parameter type, name, creation type, not present behavior, and search mode.
/// </summary>
public DependencyParameter(Type parameterType, string name,
Type createType, NotPresentBehavior notPresentBehavior, SearchMode searchMode)
: base(parameterType)
{
this.name = name;
this.createType = createType;
this.notPresentBehavior = notPresentBehavior;
this.searchMode = searchMode;
}
/// <summary>
/// Resolves a dependency.
/// </summary>
/// <param name="typeToResolve">The type to be resolved.</param>
/// <param name="typeToCreate">The type to be created, if the type cannot be resolved
/// (and notPresent is set to <see cref="NotPresentBehavior.CreateNew"/>).</param>
/// <param name="id">The ID of the object to be resolved. Pass null for the unnamed object.</param>
/// <param name="notPresent">Flag to describe how to behave if the dependency is not found.</param>
/// <param name="searchMode">Flag to describe whether searches are local only, or local and up.</param>
/// <returns>The dependent object. If the object is not found, and notPresent
/// is set to <see cref="NotPresentBehavior.ReturnNull"/>, will return null.</returns>
public object Resolve(Type typeToResolve, Type typeToCreate, string id, NotPresentBehavior notPresent, SearchMode searchMode)
{
if (typeToResolve == null)
{
throw new ArgumentNullException("typeToResolve");
}
if (!Enum.IsDefined(typeof(NotPresentBehavior), notPresent))
{
throw new ArgumentException(Properties.Resources.InvalidEnumerationValue, "notPresent");
}
if (typeToCreate == null)
{
typeToCreate = typeToResolve;
}
DependencyResolutionLocatorKey key = new DependencyResolutionLocatorKey(typeToResolve, id);
if (context.Locator.Contains(key, searchMode))
{
return(context.Locator.Get(key, searchMode));
}
switch (notPresent)
{
case NotPresentBehavior.CreateNew:
return(context.HeadOfChain.BuildUp(context, typeToCreate, null, key.ID));
case NotPresentBehavior.ReturnNull:
return(null);
default:
throw new DependencyMissingException(
string.Format(CultureInfo.CurrentCulture,
Properties.Resources.DependencyMissing, typeToResolve.ToString()));
}
}
public DependencyParameter(object buildKey,
NotPresentBehavior notPresentBehavior)
{
this.buildKey = buildKey;
this.notPresentBehavior = notPresentBehavior;
}
