I want to add new maps to the Mapper created. I studied this document
http://docs.automapper.org/en/stable/Configuration.html#profile-instances
but could not understand it. The way I want is like this
var config = new MapperConfiguration(cfg =>
{
cfg.CreateMap<Contact, Person>();
cfg.CreateMap<Student, Class>();
etc..
});
//My other code
//My other code
cfg.CreateMap<X, Y>();
So I want to reach cfg again and use it to add new maps to existing mapper configuration. How can I add new mapper to the already Initialized Mapper?
Related
I am using MvcSiteMapProvider 4.6.3, MVC 4. Using DI to config the Sitemap.
this.For<System.Runtime.Caching.ObjectCache>()
.Use(s => System.Runtime.Caching.MemoryCache.Default);
this.For(typeof (ICacheProvider<>)).Use(typeof (RuntimeCacheProvider<>));
var rootCacheDependency = this.For<ICacheDependency>().Use<RuntimeFileCacheDependency>()
.Ctor<string>("fileName").Is(rootFileName);
var rootCacheDetails = this.For<ICacheDetails>().Use<CacheDetails>()
.Ctor<TimeSpan>("absoluteCacheExpiration").Is(absoluteCacheExpiration)
.Ctor<TimeSpan>("slidingCacheExpiration").Is(TimeSpan.MinValue)
.Ctor<ICacheDependency>().Is(rootCacheDependency);
var cacheDetails = new List<SmartInstance<CacheDetails>>();
var xmlSources = new List<SmartInstance<FileXmlSource>>();
How to make it automatically update the cache when the Sitemap xml is updated?
I am upgrading MvcSitemapProvider from v3 to v4.
In version 3, it seems the sitemap is automatically refreshed.
I did set the cache expiration time to be 5 min, is this causing problem?
TimeSpan absoluteCacheExpiration = TimeSpan.FromMinutes(5);
var rootCacheDetails = this.For<ICacheDetails>().Use<CacheDetails>()
.Ctor<TimeSpan>("absoluteCacheExpiration").Is(absoluteCacheExpiration)
.Ctor<TimeSpan>("slidingCacheExpiration").Is(TimeSpan.MinValue)
.Ctor<ICacheDependency>().Is(rootCacheDependency);
UPDATE
When I change the sitemap xml file the cache is not updated till 5 min the cache expire.
I am using multiple sitemap xml files.
var sitmapPath = HostingEnvironment.MapPath("~/Sitemaps");
var sitemaps = new List<string>();
if (sitmapPath != null)
{
sitemaps.AddRange(Directory.GetFiles(sitmapPath, "*.sitemap"));
}
foreach (var sitemapFileName in sitemaps)
{
var cacheDependencie =
this.For<ICacheDependency>()
.Use<RuntimeFileCacheDependency>()
.Ctor<string>("fileName")
.Is(sitemapFileName);
cacheDetails.Add(this.For<ICacheDetails>().Use<CacheDetails>()
.Ctor<TimeSpan>("absoluteCacheExpiration").Is(absoluteCacheExpiration)
.Ctor<TimeSpan>("slidingCacheExpiration").Is(TimeSpan.MinValue)
.Ctor<ICacheDependency>().Is(cacheDependencie));
xmlSources.Add(this.For<IXmlSource>().Use<FileXmlSource>()
.Ctor<string>("fileName").Is(sitemapFileName));
}
Will this be the reason it's not working?
I don't see a problem with the code you posted. However, it is the RuntimeFileCacheDependency that will make it reload when the XML is changed.
The RuntimeFileCacheDependency expects the fileName argument to be an absolute path. So you must convert it using HostingEnvironment.MapPath before providing it to the RuntimeFileCacheDependency constructor.
var rootFileName = HostingEnvironment.MapPath("~/root.sitemap");
Response to Your Update
The purpose of the cacheDetails object is to specify the caching policy for a single SiteMapBuilderSet instance. If you look further down in the (original) DI module, notice that the variable is passed to the constructor of this class.
// Configure the builder sets
this.For<ISiteMapBuilderSetStrategy>().Use<SiteMapBuilderSetStrategy>()
.EnumerableOf<ISiteMapBuilderSet>().Contains(x =>
{
x.Type<SiteMapBuilderSet>()
.Ctor<string>("instanceName").Is("default")
.Ctor<bool>("securityTrimmingEnabled").Is(securityTrimmingEnabled)
.Ctor<bool>("enableLocalization").Is(enableLocalization)
.Ctor<bool>("visibilityAffectsDescendants").Is(visibilityAffectsDescendants)
.Ctor<bool>("useTitleIfDescriptionNotProvided").Is(useTitleIfDescriptionNotProvided)
.Ctor<ISiteMapBuilder>().Is(builder)
.Ctor<ICacheDetails>().Is(cacheDetails); // <- caching specified here explicitly.
});
This is what is used to expire the cache, but it is a completely separate mechanism from the part that specifies to use multiple files to build a SiteMap:
// Register the sitemap node providers
var siteMapNodeProvider = this.For<ISiteMapNodeProvider>().Use<CompositeSiteMapNodeProvider>()
.EnumerableOf<ISiteMapNodeProvider>().Contains(x =>
{
x.Type<XmlSiteMapNodeProvider>()
.Ctor<bool>("includeRootNode").Is(true)
.Ctor<bool>("useNestedDynamicNodeRecursion").Is(false)
.Ctor<IXmlSource>().Is(rootXmlSource);
// NOTE: Each additional XmlSiteMapNodeProvider instance for the same SiteMap instance must
// specify includeRootNode as "false"
x.Type<XmlSiteMapNodeProvider>()
.Ctor<bool>("includeRootNode").Is(false)
.Ctor<bool>("useNestedDynamicNodeRecursion").Is(false)
.Ctor<IXmlSource>().Is(childXmlSource1);
x.Type<XmlSiteMapNodeProvider>()
.Ctor<bool>("includeRootNode").Is(false)
.Ctor<bool>("useNestedDynamicNodeRecursion").Is(false)
.Ctor<IXmlSource>().Is(childXmlSource2);
// Add additional XmlSiteMapNodeProviders here (with includeRootNode as "false")...
// You only need this if you intend to use MvcSiteMapNodeAttribute in your application
x.Type<ReflectionSiteMapNodeProvider>()
.Ctor<IEnumerable<string>>("includeAssemblies").Is(includeAssembliesForScan)
.Ctor<IEnumerable<string>>("excludeAssemblies").Is(new string[0]);
});
// Register the sitemap builders
var builder = this.For<ISiteMapBuilder>().Use<SiteMapBuilder>()
.Ctor<ISiteMapNodeProvider>().Is(siteMapNodeProvider);
This is how to specify multiple XML files for a single SiteMap, but it is also possible to make each XML file into its own SiteMap instance by passing each instance of XmlSiteMapNodeProvider to a separate SiteMapBuilder and a separate SiteMapBuilderSet as described in Multiple SiteMaps in One Application.
IMPORTANT: For multiple XML files to work on a single SiteMap instance, you must specify the same key for the root node of each SiteMap as shown at the bottom of this answer. But you cannot specify a node representing the same controller action in more than one XML file (other than the root node).
If you need more flexibility than this, I would suggest implementing your own XmlSiteMapNodeProvider or abandoning the idea of using XML altogether, since using ISiteMapNodeProvider or IDynamicNodeProvider is much more flexible.
Now, back to the caching. If you are indeed using multiple XML files in the same SiteMap instance, you need to use a RuntimeCompositeCacheDependency so each of the files will be considered a dependency for the same cache, but you must use a single instance of CacheDetails.
var rootCacheDependency =
this.For<ICacheDependency>().Use<RuntimeFileCacheDependency>()
.Ctor<string>("fileName").Is(rootAbsoluteFileName);
var childCacheDependency1 =
this.For<ICacheDependency>().Use<RuntimeFileCacheDependency>()
.Ctor<string>("fileName").Is(childAbsoluteFileName1);
var childCacheDependency2 =
this.For<ICacheDependency>().Use<RuntimeFileCacheDependency>()
.Ctor<string>("fileName").Is(childAbsoluteFileName2);
var cacheDependency =
this.For<ICacheDependency>().Use<RuntimeCompositeCacheDependency>()
.Ctor<ICacheDependency[]>().Is(new ICacheDependency[]
{
(ICacheDependency)rootCacheDependency,
(ICacheDependency)childCacheDependency1,
(ICacheDependency)childCacheDependency2
});
var cacheDetails =
this.For<ICacheDetails>().Use<CacheDetails>()
.Ctor<TimeSpan>("absoluteCacheExpiration").Is(absoluteCacheExpiration)
.Ctor<TimeSpan>("slidingCacheExpiration").Is(TimeSpan.MinValue)
.Ctor<ICacheDependency>().Is(cacheDependency);
I am using Entity Framework 5 (DBContext) and I am trying to find the best way to deep copy an entity (i.e. copy the entity and all related objects) and then save the new entities in the database. How can I do this? I have looked into using extension methods such as CloneHelper but I am not sure if it applies to DBContext.
One cheap easy way of cloning an entity is to do something like this:
var originalEntity = Context.MySet.AsNoTracking()
.FirstOrDefault(e => e.Id == 1);
Context.MySet.Add(originalEntity);
Context.SaveChanges();
the trick here is AsNoTracking() - when you load an entity like this, your context do not know about it and when you call SaveChanges, it will treat it like a new entity.
If MySet has a reference to MyProperty and you want a copy of it too, just use an Include:
var originalEntity = Context.MySet.Include("MyProperty")
.AsNoTracking()
.FirstOrDefault(e => e.Id == 1);
Here's another option.
I prefer it in some cases because it does not require you to run a query specifically to get data to be cloned. You can use this method to create clones of entities you've already obtained from the database.
//Get entity to be cloned
var source = Context.ExampleRows.FirstOrDefault();
//Create and add clone object to context before setting its values
var clone = new ExampleRow();
Context.ExampleRows.Add(clone);
//Copy values from source to clone
var sourceValues = Context.Entry(source).CurrentValues;
Context.Entry(clone).CurrentValues.SetValues(sourceValues);
//Change values of the copied entity
clone.ExampleProperty = "New Value";
//Insert clone with changes into database
Context.SaveChanges();
This method copies the current values from the source to a new row that has been added.
This is a generic extension method which allows generic cloning.
You have to fetch System.Linq.Dynamic from nuget.
public TEntity Clone<TEntity>(this DbContext context, TEntity entity) where TEntity : class
{
var keyName = GetKeyName<TEntity>();
var keyValue = context.Entry(entity).Property(keyName).CurrentValue;
var keyType = typeof(TEntity).GetProperty(keyName, System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance).PropertyType;
var dbSet = context.Set<TEntity>();
var newEntity = dbSet
.Where(keyName + " = #0", keyValue)
.AsNoTracking()
.Single();
context.Entry(newEntity).Property(keyName).CurrentValue = keyType.GetDefault();
context.Add(newEntity);
return newEntity;
}
The only thing you have to implement yourself is the GetKeyName method. This could be anything from return typeof(TEntity).Name + "Id" to return the first guid property or return the first property marked with DatabaseGenerated(DatabaseGeneratedOption.Identity)].
In my case I already marked my classes with [DataServiceKeyAttribute("EntityId")]
private string GetKeyName<TEntity>() where TEntity : class
{
return ((DataServiceKeyAttribute)typeof(TEntity)
.GetCustomAttributes(typeof(DataServiceKeyAttribute), true).First())
.KeyNames.Single();
}
I had the same issue in Entity Framework Core where deep clone involves multiple steps when children entities are lazy loaded. One way to clone the whole structure is the following:
var clonedItem = Context.Parent.AsNoTracking()
.Include(u => u.Child1)
.Include(u => u.Child2)
// deep includes might go here (see ThenInclude)
.FirstOrDefault(u => u.ParentId == parentId);
// remove old id from parent
clonedItem.ParentId = 0;
// remove old ids from children
clonedItem.Parent1.ForEach(x =>
{
x.Child1Id = 0;
x.ParentId= 0;
});
clonedItem.Parent2.ForEach(x =>
{
x.Child2Id = 0;
x.ParentId= 0;
});
// customize entities before inserting it
// mark everything for insert
Context.Parent.Add(clonedItem);
// save everything in one single transaction
Context.SaveChanges();
Of course, there are ways to make generic functions to eager load everything and/or reset values for all keys, but this should make all the steps much clear and customizable (e.g. all for some children to not be cloned at all, by skipping their Include).
When creating views in Monotouch Dialog, one possible way is to create .cs files which hold the view information like so:
[Caption("Create user")]
[Alignment(UITextAlignment.Center)]
public RegistrationSchema CreateAccount;
But say I needed to have button added dynamically, like so:
//This is what I'd like to do, but there doesn't seem to be any support for this
_newUserSection = new Section("Create user) {
new RegistrationSchema()
};
Any ideas?
Edit My RegistrationSchema.cs file
public class RegistrationSchema
{
[Section("Fill out the form")]
[Caption("E-mail")]
[Entry(KeyboardType=UIKeyboardType.EmailAddress)]
public string Email;
//more stuff here
}
// Create a new section
var section = new Section("A section");
// Create a new element
var elem = new StringElement("String Element")
// Add element to section
section.Add(elem);
// Add section to root.
Root.Add(section);
// Refresh
Root.ReloadData();
All well documented here https://github.com/migueldeicaza/MonoTouch.Dialog and in the Xamarin tutorials, like there http://blog.xamarin.com/2012/02/10/easily-create-ios-user-interfaces-with-monotouch-dialog/
To push a new controller, use a RootElement:
var newRoot = RootElement("Another root", new ThisWillBePushedController());
root.Add(newRoot);
Tapping the newRoot will push the ThisWillBePushedController().
Note that you'll have to override MonoTouch.DialogViewController and call the base c'tor passing TRUE for the last argument "pushing" if you're using a UINavigationController.
I'm trying to use:
var viewEngineResult = ViewEngines.Engines.FindView(ControllerContext, myViewName, null);
as part of a process to render the contents of a view to send nice formatted emails. I'm using it inside an Orchard Controller. I have used similar code outside of Orchard in an MVC project and it works fine.
However in Orchard running this code fails to find the view I'm looking for and returns a view engine result that has searched 0 locations.
viewEngineResult has the following values after it is called:
SearchedLocations: Count = 0,
View: null,
ViewEngine: null
Is there a reason this doesn't work in Orchard and is there a way to make it work?
This answer is based on the advise given me by Bertrand, but I wanted to bring it together with what I'd discovered.
To be able to use FindPartialView I needed to inject an instance of IViewEngineProvider into my controller.
I then used the following code to resolve and render a view:
private String RenderView(String viewName, object model)
{
var paths = new List<string>(); // This can just be an empty list and it still finds it.
var viewEngine = _viewEngineProvider.CreateModulesViewEngine(new CreateModulesViewEngineParams {VirtualPaths = paths});
var viewResult = viewEngine.FindPartialView(ControllerContext, viewName, false);
if (viewResult.View == null) {
throw new Exception("Couldn't find view " + viewName);
}
var viewData = new ViewDataDictionary {Model = model};
using (var sw = new StringWriter())
{
var viewContext = new ViewContext(ControllerContext, viewResult.View, viewData, TempData, sw);
viewResult.View.Render(viewContext, sw);
return sw.GetStringBuilder().ToString();
}
}
I think you'll want to take a close look at Orchard.Framework/Mvc/ViewEngines, in particular IViewEngineProvider and ThemeAwareViewEngine. There's a lot more going on when in Orchard, such as themes, multi-tenancy, and a richer environment in general that may be needed to make this work.
What's likely happening here is that the view engines don't have enough information to resolve a view and thus opt out of the chain. You might want to put a breakpoint into ThemeAwareViewEngine.FindView, and then inspect the private dependency fields of that class. I wouldn't be surprised if they were null, because getting to FindView through statics will probably not allow dependency injection to do its stuff properly.
Then again I'm just guessing.
In short, has anyone got one, including how to register the custom mapper.
I'm trying to map a custom IList<T> implementation and am not getting very far.
Just replace the MapperRegistry.AllMappers with a new list. Here's the default:
public static Func<IEnumerable<IObjectMapper>> AllMappers = () => new IObjectMapper[]
{
new DataReaderMapper(),
new TypeMapMapper(TypeMapObjectMapperRegistry.AllMappers()),
new StringMapper(),
new FlagsEnumMapper(),
new EnumMapper(),
new ArrayMapper(),
new EnumerableToDictionaryMapper(),
new DictionaryMapper(),
new ListSourceMapper(),
new ReadOnlyCollectionMapper(),
new CollectionMapper(),
new EnumerableMapper(),
new AssignableMapper(),
new TypeConverterMapper(),
new NullableMapper()
};
You'd take this Func, and replace it with something else, with this set of code as a starting point.
Not the prettiest thing in the world, but at least it's possible.