TDDD05: Application frameworks

Transcription

1 TDDD05: Application frameworks Ola Leifler, IDA, Linköpings universitet

2 Component frameworks A component framework is a software entity that supports components conforming to certain standards and allows instances of these components to be plugged into the component framework [p. 425] Domain-agnostic

3 Application frameworks A framework is a set of classes that embodies an abstract design for solutions to a family of related problems, and supports reuses at a larger granularity than classes. Ralph Johnson and Brian Foote. Designing Reusable Classes. Journal of Object-Oriented Programming. SIGS, 1, 5 (June/July. 1988), Domain-specific

4 Agenda Case studies in Application Frameworks:

5 Agenda Case studies in Application Frameworks:

6 Agenda Case studies in Application Frameworks: Web application frameworks Domain specific

7 Agenda Case studies in Application Frameworks: Web application frameworks Domain specific Spring Domain agnostic

8 Web application frameworks

9 Web application frameworks Template language Caching Connecting Javascript to Controller code

10 Web application frameworks ORM/Persistence, Data validation, Localization Template language Caching Connecting Javascript to Controller code

11 Web application frameworks Routing, Controller wiring, HTTP filtering, Response encoding Parameter parsing ORM/Persistence, Data validation, Localization Template language Caching Connecting Javascript to Controller code

12 Web application frameworks Routing, Controller wiring, HTTP filtering, Response encoding Parameter parsing ORM/Persistence, Data validation, Localization HTTP response HTTP request Controller requests objects requests HTML rendered HTML Model View Template language Caching Connecting Javascript to Controller code

13 Web application frameworks Routing, Controller wiring, HTTP filtering, Response encoding Parameter parsing ORM/Persistence, Data validation, Localization HTTP response HTTP request Controller requests objects requests HTML rendered HTML Model View Template language Caching Connecting Javascript to Controller code Lifecycle management Dependency resolution

14 Web application frameworks Routing, Controller wiring, HTTP filtering, Response encoding Parameter parsing ORM/Persistence, Data validation, Localization HTTP response HTTP request Controller requests objects requests HTML rendered HTML Model View Template language Caching Connecting Javascript to Controller code Lifecycle management Dependency resolution Domain agnostic

15 Web application frameworks Routing, Controller wiring, HTTP filtering, Response encoding Parameter parsing ORM/Persistence, Data validation, Localization HTTP response HTTP request Domain specific Controller requests objects requests HTML rendered HTML Model View Template language Caching Connecting Javascript to Controller code Lifecycle management Dependency resolution Domain agnostic

16 Routing Declarative mapping of requests to controller methods GET /user/? usercontroller.listall GET /user/{<[0-9]+>id} usercontroller.showuser DELETE /user/{<[0-9]+>id} usercontroller.deleteuser POST /user/add/? usercontroller.createuser

17 Parameter parsing Converts HTTP request header/body data to parameter values through pluggable mechanisms Usually supports all built-in types, with support for custom or convention-based conversions

18 Lifecycle management (Java frameworks) Controllers are singletons (Java Servlets, Struts) Each page is a singleton (Tapestry) Application contexts specific to session, request or page, and beans belong to an application context

19 Spring

20 Spring dependency injection, testing

21 Spring dependency injection, testing authentication, authorization protection against session fixation, clickjacking, cross site request forgery

22 Spring dependency injection, dynamic programming testing language for the JVM authentication, authorization protection against session fixation, clickjacking, cross site request forgery

23 Spring dependency injection, dynamic programming testing language for the JVM authentication, authorization Support for event- and protection against data-driven applications session fixation, clickjacking, cross site request forgery

24 Spring

25 Spring Object mapping to non-relational databases such as key-value stores, document databases, graph-based storage integration with map-reduce frameworks, and REST publishing

26 Spring

27 Spring Messaging patterns Web service invocation Advanced Dependency Injection

28 Spring Messaging patterns Web service invocation Advanced Dependency Injection Transaction management Chunk-based processing Declaritive I/O Start/Stop/Restart Retry/Skip

29 Spring Messaging patterns Web service invocation Advanced Dependency Injection Transaction management Chunk-based processing Declaritive I/O Start/Stop/Restart Retry/Skip Distributed data ingestion to big data stores Real-time analytics at ingestion time Workflow management via batch jobs as well as Hadoop operations. High throughput data export

30 Spring Messaging patterns Web service invocation Advanced Dependency Injection Transaction management Chunk-based processing Declaritive I/O Start/Stop/Restart Retry/Skip MVC support for web applications Web application contexts Distributed data ingestion to big data stores Real-time analytics at ingestion time Workflow management via batch jobs as well as Hadoop operations. High throughput data export

31 Spring Example Model

32 Spring Example Controller

33 Spring Example Controller

34 Spring Example Controller

35 Spring Example Controller

36 Spring Example Web App

37 Spring Example Web App Server initialized with port: 8080 Startup log Mapped "{[/greeting],... }" onto public rest.greeting rest.greetingcontroller.greeting(java.lang.string)

38 Spring Example Web App Server initialized with port: 8080 Startup log Mapped "{[/greeting],... }" onto public rest.greeting rest.greetingcontroller.greeting(java.lang.string) lap-161:~ olale$ curl {"id":1,"content":"hello World!"} lap-161:~ olale$ curl {"id":2,"content":"hello World!"} lap-161:~ olale$ curl {"id":4,"content":"hello Ola!"}

39 Spring Example Web App Server initialized with port: 8080 Startup log Mapped "{[/greeting],... }" onto public rest.greeting rest.greetingcontroller.greeting(java.lang.string) lap-161:~ olale$ curl {"id":1,"content":"hello World!"} lap-161:~ olale$ curl {"id":2,"content":"hello World!"} lap-161:~ olale$ curl {"id":4,"content":"hello Ola!"}

40 Spring Example Web App Server initialized with port: 8080 Startup log Mapped "{[/greeting],... }" onto public rest.greeting rest.greetingcontroller.greeting(java.lang.string) lap-161:~ olale$ curl {"id":1,"content":"hello World!"} lap-161:~ olale$ curl {"id":2,"content":"hello World!"} lap-161:~ olale$ curl {"id":4,"content":"hello Ola!"}

41 Spring Example Web App Server initialized with port: 8080 Startup log Mapped "{[/greeting],... }" onto public rest.greeting rest.greetingcontroller.greeting(java.lang.string) lap-161:~ olale$ curl {"id":1,"content":"hello World!"} lap-161:~ olale$ curl {"id":2,"content":"hello World!"} lap-161:~ olale$ curl {"id":4,"content":"hello Ola!"}

42 Spring Example 2 Required dependency

43 Spring Example 2 Required dependency

44 Spring Example 2 Implementation of MessageService

45 Spring Example 2 Implementation of MessageService

46 Spring Example 2 Autowiring by type from bean name 'messageprinter' to bean named 'getmockmessageservice' Finished creating instance of bean 'messageprinter' this is just a fake message service

47 Spring Example 3 Getters and setters public class User extends AbstractPersistable<Long> {! private static final long serialversionuid = = true) private String username;! private String firstname;! private String lastname;! public User() {!! this(null);! }! /**! * Creates a new user instance.! */! public User(Long id) {!! this.setid(id);! }! /**! * Returns the username.! *! */! public String getusername() {!! return username;! }

48 Spring Example 3 public interface SimpleUserRepository extends CrudRepository<User, Long> {! /**! * Find all users with the given lastname. This method will be translated into a query by constructing it directly! * from the method name as there is no other query declared.! *! lastname! */! List<User> findbylastname(string lastname);! /**! * Returns all users with the given firstname. This method will be translated into a query using the one declared in! * the {@link Query} annotation declared one.! *! firstname! u from User u where u.firstname =?")! List<User> findbyfirstname(string firstname); }

49 Spring Example 3 public interface SimpleUserRepository extends CrudRepository<User, Long> {! /**! * Find all users with the given lastname. This method will be translated into a query by constructing it directly! * from the method name as there is no other query declared.! *! lastname What would be required to achieve this?! */! List<User> findbylastname(string lastname);! /**! * Returns all users with the given firstname. This method will be translated into a query using the one declared in! * the {@link Query} annotation declared one.! *! firstname! u from User u where u.firstname =?")! List<User> findbyfirstname(string firstname); }