Transcript .net framework

Architektúry softvérových systémov
24.11. Peter Dušek, Gratex
16:00 , DE150
.NET Application
.NET Framework
Operating System + Hardware
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Common Language Runtime
Garbage Collection
Code Access Security
Code Verification
Code Execution
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Visual Basic, C#, Visual C++, F#
third-party compilers Eiffel, Perl, COBOL
MSIL (Microsoft Intermediate Language)
just-in-time (JIT) compiler
Code in VB.NET
Code in C#
Another
.NET Language
VB.NET compiler
C# compiler
Appropriate
Compiler
IL(Intermediate
Language) code
CLR just-in-time
execution
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Triedy
Štruktúry
Číselníky
Rozhrania
Delegáty
Anonymous Types
Lambda Expressions
dynamic
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Value types
(Structs, Enumerations, Integral types,
Floating-point types, decimal, bool)
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Reference types
(class, interface, delegate, dynamic, object, string)
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Pointer types (unsafe context)
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Immutable (napr String, DateTime)
K izoláci aplikací sú používáne procesy, ale..
Domény vytvorené hostitelským modulom
runtime
Načítať komponentu aplikácie do domény
Vykonať a uvolniť doménu
CreateDomain
ExecuteAssembly
CreateInstanceAndUnwrap
Unload
[AttributeUsage(AttributeTargets.Method,
Inherited = false, AllowMultiple = true)]
public class YourAttribute : Attribute {
//...
}
public class MyClass
{
[YourAttribute]
public virtual void MyMethod() {
//...
}
}
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Reflection provides objects (of type Type)
that describe assemblies, modules and types.
Create instances of objects
Hook up events
Invoke methods
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mechanism for communicating between
objects which are not in the same process
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Proxy objects are created when a client
activates a remote object.
The proxy object acts as a representative of
the remote object and ensures that all calls
made on the proxy are forwarded to the
correct remote object instance
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library for creating lightweight, extensible
applications
príklad
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lambda výrazy sú anonymné funkcie, ktoré
môžu obsahovať výrazy a príkazy, a môžu byť
použité na vytvorenie delegátov
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operator => is read as "goes to"
int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };
int oddNumbers = numbers.Count(n => n % 2 == 1);
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public Lazy(LazyExecutionMode mode)
public Lazy(Func<T>
valueFactory,LazyExecutionMode mode)
NotThreadSafe
EnsureSingleThreadSafeExecution
AllowMultipleThreadSafeExecution
ukážka implementácie cez Reflector
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XmlSerializer
BinaryFormatter
DataContractSerializer
JSON
XAMLSerializer
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ukážka v príkladoch
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Výnimky sú spracované bez ohľadu na jazyk,
ktorý generuje výnimky alebo jazyk, ktorý ich
spracováva.
 Spracovanie nevyžaduje žiadnu konkrétnu
jazykovú syntax, ale umožňuje každému jazyku
definovať vlastnú syntax.
 Umožňuje, aby boli výnimky vyvolané aj cez
hranice procesov a dokonca na iné počítače.
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udalosť AppDomain.UnhandledException
try
{
}
catch(Exception ex)
{
// throw ex;
}
finaly
{
}
LINQ to Objects
LINQ to SQL
LINQ to XML
LINQ to DataSet
var source = Enumerable.Range(1, 10000);
var evenNums = from num in source
where (num%2) == 0
select num;
SomeDataContext dc = new SomeDataContext();
var queue = from r in dc.Restaurant
where r.Place == “Bratislava”
orderby (r.Ranking, r.Name)
select r;
Ľahšie písanie join-ov na daľšie tabuľky
var queue2 = dc. Restaurant
.Where( r => r.Place == “Bratislava” )
.OrderBy(r => r.Ranking)
.ThenBy(r => r.Name).Skip(10).Take(10);
Obsahuje funkcie, ktoré nemajú ekvivalent v query notation
Single(), First(), Count(), Skip(), Take()
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Observer Design Pattern
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Implementácia INotifyPropertyChanged
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MVVM (model-view-viewModel)
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http://www.asp.net/mvc
aktualne verzia 3
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ServiceDescription
 ServiceType
 ServiceEndpoint
▪ Endpoint address
▪ Uri, AddressHeader, Identity
▪ Binding – popisuje encoding, security,...
▪ Name, BindingElement
▪ Contract description – popisuje služby servisu
▪ OperationDescription, MessageDescriptions