public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
if (extensionPoint.GetType() == typeof(DicomCodecFactoryExtensionPoint))
return new object[]{ new DicomRleCodecFactory() };
return new object[0];
}
/// <summary>
/// Creates instances of available extensions that extend the specified extension point and match the specified filter.
/// </summary>
/// <param name="extensionPoint">The extension point for which to create extensions.</param>
/// <param name="filter">An <see cref="ExtensionFilter"/> used to limit the result set to extensions with particular characteristics.</param>
/// <param name="justOne">Indicates whether or not to return only the first matching extension that is found.</param>
/// <returns>A set of extension instances.</returns>
/// <remarks>
/// Available extensions are those which are both enabled and licensed.
/// If <paramref name="justOne"/> is true, the first matching extension that is successfully instantiated is returned,
/// an no other extensions are instantiated.
/// </remarks>
public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
// get subset of applicable extensions
var extensions = ListExtensionsHelper(extensionPoint, filter);
// attempt to instantiate the extension classes
var createdObjects = new List<object>();
foreach (var extension in extensions)
{
if (justOne && createdObjects.Count > 0)
break;
try
{
// instantiate
var o = Activator.CreateInstance(extension.ExtensionClass.Resolve());
createdObjects.Add(o);
}
catch (Exception e)
{
// instantiation failed
// this should not be considered an exceptional circumstance
// instantiation may fail by design in some cases (e.g extension is designed only to run on a particular platform)
Platform.Log(LogLevel.Debug, e);
}
}
return createdObjects.ToArray();
}
/// <summary>
/// Creates one of each type of object that extends the input <paramref name="extensionPoint" />,
/// matching the input <paramref name="filter" />; creates a single extension if <paramref name="justOne"/> is true.
/// </summary>
/// <param name="extensionPoint">The <see cref="ExtensionPoint"/> to create extensions for.</param>
/// <param name="filter">The filter used to match each extension that is discovered.</param>
/// <param name="justOne">Indicates whether or not to return only the first matching extension that is found.</param>
/// <returns></returns>
public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
// get subset of applicable extensions
var extensions = ListExtensionsHelper(extensionPoint, filter);
// attempt to instantiate the extension classes
var createdObjects = new List <object>();
foreach (var extension in extensions)
{
if (justOne && createdObjects.Count > 0)
{
break;
}
try
{
// instantiate
var o = Activator.CreateInstance(extension.ExtensionClass);
createdObjects.Add(o);
}
catch (Exception e)
{
// instantiation failed
// this should not be considered an exceptional circumstance
// instantiation may fail by design in some cases (e.g extension is designed only to run on a particular platform)
Platform.Log(LogLevel.Debug, e);
}
}
return(createdObjects.ToArray());
}
public ExtensionInfo[] ListExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
if (extensionPoint is CacheProviderExtensionPoint)
{
return new[] { new ExtensionInfo(typeof(TestCacheProvider), typeof(CacheProviderExtensionPoint), null, null, true) };
}
throw new NotImplementedException();
}
public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
if (extensionPoint is CacheProviderExtensionPoint)
{
return new[] { new TestCacheProvider() };
}
throw new NotImplementedException();
}
public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
if (extensionPoint.GetType() == typeof(ProcedureStepBuilderExtensionPoint))
{
return new object[] { new ModalityProcedureStepBuilder() };
}
return new object[] { };
}
/// <summary>
/// Starts the application.
/// </summary>
/// <param name="applicationRootFilter">An extension filter that selects the application root extension to execute.</param>
/// <param name="args">The set of arguments passed from the command line.</param>
/// <remarks>
/// A ClearCanvas based application is started by calling this convenience method from
/// a bootstrap executable of some kind. Calling this method results in the loading
/// of all plugins and creation of an <see cref="IApplicationRoot"/> extension.
/// This method is not thread-safe as it should only ever be invoked once per execution, by a single thread.
/// </remarks>
public static void StartApp(ExtensionFilter applicationRootFilter, string[] args)
{
FatalExceptionHandler.Initialize();
ApplicationRootExtensionPoint xp = new ApplicationRootExtensionPoint();
_applicationRoot = (applicationRootFilter == null) ?
(IApplicationRoot)xp.CreateExtension() :
(IApplicationRoot)xp.CreateExtension(applicationRootFilter);
_applicationRoot.RunApplication(args);
}
/// <summary>
/// Creates one of each type of object that extends the input <paramref name="extensionPoint" />,
/// matching the input <paramref name="filter" />; creates a single extension if <paramref name="justOne"/> is true.
/// </summary>
/// <param name="extensionPoint">The <see cref="ExtensionPoint"/> to create extensions for.</param>
/// <param name="filter">The filter used to match each extension that is discovered.</param>
/// <param name="justOne">Indicates whether or not to return only the first matching extension that is found.</param>
/// <returns></returns>
public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
// get subset of applicable extensions
List <ExtensionInfo> extensions = ListExtensionsHelper(extensionPoint, filter);
// attempt to instantiate the extension classes
List <object> createdObjects = new List <object>();
foreach (ExtensionInfo extension in extensions)
{
if (justOne && createdObjects.Count > 0)
{
break;
}
// is the extension a concrete class?
if (!IsConcreteClass(extension.ExtensionClass))
{
Platform.Log(LogLevel.Warn, SR.ExceptionExtensionMustBeConcreteClass,
extension.ExtensionClass.FullName);
continue;
}
// does the extension implement the required interface?
if (!extensionPoint.InterfaceType.IsAssignableFrom(extension.ExtensionClass))
{
Platform.Log(LogLevel.Warn, SR.ExceptionExtensionDoesNotImplementRequiredInterface,
extension.ExtensionClass.FullName,
extensionPoint.InterfaceType);
continue;
}
try
{
// instantiate
object o = Activator.CreateInstance(extension.ExtensionClass);
createdObjects.Add(o);
}
catch (Exception e)
{
// instantiation failed
// this should not be considered an exceptional circumstance
// instantiation may fail by design in some cases (e.g extension is designed only to run on a particular platform)
Platform.Log(LogLevel.Debug, e);
}
}
return(createdObjects.ToArray());
}
/// <summary>
/// Creates one of each type of object that extends the input <paramref name="extensionPoint" />,
/// matching the input <paramref name="filter" />; creates a single extension if <paramref name="justOne"/> is true.
/// </summary>
/// <param name="extensionPoint">The <see cref="ExtensionPoint"/> to create extensions for.</param>
/// <param name="filter">The filter used to match each extension that is discovered.</param>
/// <param name="justOne">Indicates whether or not to return only the first matching extension that is found.</param>
/// <returns></returns>
public object[] CreateExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter, bool justOne)
{
// get subset of applicable extensions
List<ExtensionInfo> extensions = ListExtensionsHelper(extensionPoint, filter);
// attempt to instantiate the extension classes
List<object> createdObjects = new List<object>();
foreach (ExtensionInfo extension in extensions)
{
if (justOne && createdObjects.Count > 0)
break;
// is the extension a concrete class?
if (!IsConcreteClass(extension.ExtensionClass))
{
Platform.Log(LogLevel.Warn, SR.ExceptionExtensionMustBeConcreteClass,
extension.ExtensionClass.FullName);
continue;
}
// does the extension implement the required interface?
if (!extensionPoint.InterfaceType.IsAssignableFrom(extension.ExtensionClass))
{
Platform.Log(LogLevel.Warn, SR.ExceptionExtensionDoesNotImplementRequiredInterface,
extension.ExtensionClass.FullName,
extensionPoint.InterfaceType);
continue;
}
try
{
// instantiate
object o = Activator.CreateInstance(extension.ExtensionClass);
createdObjects.Add(o);
}
catch (Exception e)
{
// instantiation failed
// this should not be considered an exceptional circumstance
// instantiation may fail by design in some cases (e.g extension is designed only to run on a particular platform)
Platform.Log(LogLevel.Debug, e);
}
}
return createdObjects.ToArray();
}
/// <summary>
/// Starts the application.
/// </summary>
/// <param name="applicationRootFilter">An extension filter that selects the application root extension to execute.</param>
/// <param name="args">The set of arguments passed from the command line.</param>
/// <remarks>
/// A ClearCanvas based application is started by calling this convenience method from
/// a bootstrap executable of some kind. Calling this method results in the loading
/// of all plugins and creation of an <see cref="IApplicationRoot"/> extension.
/// This method is not thread-safe as it should only ever be invoked once per execution, by a single thread.
/// </remarks>
public static void StartApp(ExtensionFilter applicationRootFilter, string[] args)
{
#if !DEBUG
try
{
#endif
ApplicationRootExtensionPoint xp = new ApplicationRootExtensionPoint();
_applicationRoot = (applicationRootFilter == null) ?
(IApplicationRoot)xp.CreateExtension() :
(IApplicationRoot)xp.CreateExtension(applicationRootFilter);
_applicationRoot.RunApplication(args);
#if !DEBUG
}
catch (Exception e)
{
Platform.Log(LogLevel.Fatal, e);
// for convenience, if this is console app, also print the message to the console
Console.WriteLine(e.Message);
}
#endif
}
/// <summary>
/// Gets metadata describing all enabled extensions of the input <paramref name="extensionPoint"/>,
/// matching the given <paramref name="filter"/>.
/// </summary>
/// <param name="extensionPoint">The <see cref="ExtensionPoint"/> whose extension metadata is to be retrieved.</param>
/// <param name="filter">An <see cref="ExtensionFilter"/> used to filter out extensions with particular characteristics.</param>
/// <returns></returns>
public ExtensionInfo[] ListExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
return ListExtensionsHelper(extensionPoint, filter).ToArray();
}
/// <summary>
/// Protected method that actually retrieves the <see cref="ExtensionInfo"/>
/// objects from an internal <see cref="IExtensionFactory"/>.
/// </summary>
protected ExtensionInfo[] ListExtensionsHelper(ExtensionFilter filter)
{
// we assume that the factory itself is thread-safe, and therefore we don't need to lock
// (don't want to incur the cost of locking if not necessary)
return _extensionFactory.ListExtensions(this, filter);
}
/// <summary>
/// List meta-data for enabled extensions of this point that match the supplied filter.
/// </summary>
/// <param name="filter"></param>
/// <returns></returns>
public ExtensionInfo[] ListExtensions(ExtensionFilter filter)
{
return ListExtensionsHelper(filter);
}
/// <summary>
/// Instantiates all enabled extensions of this point that match the supplied filter.
/// </summary>
public object[] CreateExtensions(ExtensionFilter filter)
{
return CreateExtensionsHelper(filter, false);
}
/// <summary>
/// Protected method that actually performs the extension creation
/// from an internal <see cref="IExtensionFactory"/>.
/// </summary>
protected object[] CreateExtensionsHelper(ExtensionFilter filter, bool justOne)
{
// we assume that the factory itself is thread-safe, and therefore we don't need to lock
// (don't want to incur the cost of locking if not necessary)
return _extensionFactory.CreateExtensions(this, filter, justOne);
}
private List<ExtensionInfo> ListExtensionsHelper(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
// ensure extension map has been constructed
BuildExtensionMapOnce();
List<ExtensionInfo> extensions;
if (_extensionMap.TryGetValue(extensionPoint.GetType(), out extensions))
{
return CollectionUtils.Select(extensions,
extension => extension.Enabled && extension.Authorized && (filter == null || filter.Test(extension)));
}
return new List<ExtensionInfo>();
}
/// <summary>
/// Instantiates one extension of this point that matches the specified filter.
/// </summary>
public object CreateExtension(ExtensionFilter filter)
{
return AtLeastOne(CreateExtensionsHelper(filter, true), this.GetType());
}
/// <summary>
/// Protected method that actually retrieves the <see cref="ExtensionInfo"/>
/// objects from an internal <see cref="IExtensionFactory"/>.
/// </summary>
protected ExtensionInfo[] ListExtensionsHelper(ExtensionFilter filter)
{
// we assume that the factory itself is thread-safe, and therefore we don't need to lock
// (don't want to incur the cost of locking if not necessary)
return(_extensionFactory.ListExtensions(this, filter));
}
private List <ExtensionInfo> ListExtensionsHelper(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
// ensure extension map has been constructed
BuildExtensionMapOnce();
List <ExtensionInfo> extensions;
if (_extensionMap.TryGetValue(extensionPoint.GetType(), out extensions))
{
return(CollectionUtils.Select(extensions,
extension => extension.Enabled && extension.Authorized && (filter == null || filter.Test(extension))));
}
return(new List <ExtensionInfo>());
}
/// <summary>
/// Instantiates all enabled extensions of this point that match the supplied filter.
/// </summary>
public object[] CreateExtensions(ExtensionFilter filter)
{
return(CreateExtensionsHelper(filter, false));
}
/// <summary>
/// Protected method that actually performs the extension creation
/// from an internal <see cref="IExtensionFactory"/>.
/// </summary>
protected object[] CreateExtensionsHelper(ExtensionFilter filter, bool justOne)
{
// we assume that the factory itself is thread-safe, and therefore we don't need to lock
// (don't want to incur the cost of locking if not necessary)
return(_extensionFactory.CreateExtensions(this, filter, justOne));
}
/// <summary>
/// Gets metadata describing all enabled extensions of the input <paramref name="extensionPoint"/>,
/// matching the given <paramref name="filter"/>.
/// </summary>
/// <param name="extensionPoint">The <see cref="ExtensionPoint"/> whose extension metadata is to be retrieved.</param>
/// <param name="filter">An <see cref="ExtensionFilter"/> used to filter out extensions with particular characteristics.</param>
/// <returns></returns>
public ExtensionInfo[] ListExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
return(ListExtensionsHelper(extensionPoint, filter).ToArray());
}
/// <summary>
/// List meta-data for enabled extensions of this point that match the supplied filter.
/// </summary>
/// <param name="filter"></param>
/// <returns></returns>
public ExtensionInfo[] ListExtensions(ExtensionFilter filter)
{
return(ListExtensionsHelper(filter));
}
public ExtensionInfo[] ListExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
return new ExtensionInfo[0];
}
private List<ExtensionInfo> ListExtensionsHelper(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
// ensure extension map has been constructed
BuildExtensionMapOnce();
Type extensionPointClass = extensionPoint.GetType();
List<ExtensionInfo> extensions;
if (_extensionMap.TryGetValue(extensionPointClass, out extensions))
{
return CollectionUtils.Select(extensions,
delegate(ExtensionInfo extension)
{
return extension.Enabled
&& (filter == null || filter.Test(extension));
});
}
else
{
return new List<ExtensionInfo>();
}
}
private List <ExtensionInfo> ListExtensionsHelper(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
// ensure extension map has been constructed
BuildExtensionMapOnce();
Type extensionPointClass = extensionPoint.GetType();
List <ExtensionInfo> extensions;
if (_extensionMap.TryGetValue(extensionPointClass, out extensions))
{
return(CollectionUtils.Select(extensions,
delegate(ExtensionInfo extension)
{
return extension.Enabled &&
(filter == null || filter.Test(extension));
}));
}
else
{
return(new List <ExtensionInfo>());
}
}
/// <summary>
/// Instantiates one extension of this point that matches the specified filter.
/// </summary>
public object CreateExtension(ExtensionFilter filter)
{
return(AtLeastOne(CreateExtensionsHelper(filter, true), this.GetType()));
}
public ExtensionInfo[] ListExtensions(ExtensionPoint extensionPoint, ExtensionFilter filter)
{
throw new Exception("The method or operation is not implemented.");
}
