Beyond PrettyFaces - Einführung in Rewrite
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A rewrite engine modifies the appearance of URLs in a web application. URL rewriting is used to make URLs more readable, search engine optimized, and to loosely couple the URL from the underlying implementation or framework. Rewrite is a new open source URL rewrite engine that provides a Java DSL for configuration and supports features like parameter extraction, validation, request actions, navigation handling, and response transformations through a pipeline. It aims to improve on existing solutions by providing a more extensible and typesafe configuration approach without framework dependencies. The rewrite-config-prettyfaces module can help migrate existing PrettyFaces applications to use Rewrite.
![Inbound
GET /faces/home.xhtml HTTP/1.1
Host: www.acme.com
Connection: keep-alive
[....]](https://image.slidesharecdn.com/rewrite-130426010216-phpapp02/85/Beyond-PrettyFaces-Einfuhrung-in-Rewrite-19-320.jpg)
![Validierung
@Named
@RequestScoped
@Join(path = "/products/{category}",
to = "/faces/products.xhtml")
public class ProductListPage {
@Parameter
@Matches("[a-zA-Z-]+")
private String category;
/* ... */
}](https://image.slidesharecdn.com/rewrite-130426010216-phpapp02/85/Beyond-PrettyFaces-Einfuhrung-in-Rewrite-39-320.jpg)
Beyond PrettyFaces - Einführung in Rewrite
- 1. Christian Kaltepoth | ingenit GmbH & Co. KG Beyond PrettyFaces Einführung in Rewrite
- 3. Wikipedia A rewrite engine is software located in a Web application framework running on a Web server that modifies a web URL's appearance. This modification is called URL rewriting. http://en.wikipedia.org/wiki/Rewrite_engine
- 7. Vorteile • Adressierbare Informationen – Wo bin ich hier? – "Vertrauen" • Reload und Bookmarks • Einfache HTML Links – Lose Kopplung • Technologieneutralität
- 8. SEO • Keywords in URL • Optimierung des Rankings http://www.amazon.com/JavaServer- Faces-2-0-Complete- Reference/dp/0071625097
- 9. PrettyFaces • JSF URL-Rewriting De-facto-Standard • RESTful URLs • Page Actions • Einfache Rewrite Engine • Dynamic Views • Integration mit JSF Navigation
- 10. Warum Rewrite?
- 13. Einschränkungen • Mapping nur via Request Path • Eingeschränkte Konfiguration via XML • Annotation API „verbesserungswürdig“ • Konvertierung nur eingeschränkt möglich • Nicht besonders erweiterbar
- 14. Der Neuanfang
- 15. Was ist Rewrite?
- 16. Key Features • Servlet basiertes Rewriting auf Basis einer Rule-Engine • Framework Integration – JSF, CDI, Spring, Shiro, etc. • Konfiguration: Java DSL + Annotations • Fokus auf Erweiterbarkeit • Open Source (Apache 2.0)
- 17. Begriffe • Configuration: – Sortierte Liste von Rules • Rule: – Conditions – Operations – Priority
- 19. Inbound GET /faces/home.xhtml HTTP/1.1 Host: www.acme.com Connection: keep-alive [....]
- 21. Java DSL
- 22. Warum? • Typensichere Konfiguration • Code Assist durch IDE • Erweiterbar • Geführte Konfiguration • „Plain Java“
- 23. Java DSL public class RewriteConfig extends HttpConfigurationProvider { @Override public Configuration getConfiguration(ServletContext ctx) { // Konfiguration } @Override public int priority() { return 10; } }
- 24. ConfigurationBuilder return ConfigurationBuilder.begin() // Variante 1 .addRule() .when( /* condition */ ) .perform( /* operation */ ) // Variante 2 .addRule( /* rule */ ) ;
- 31. JSF 2.0 View Parameter <f:metadata> <f:viewParam name="category" value="#{productListPage.category}" /> </f:metadata> @Named @RequestScoped public class ProductListPage { private String category; }
- 33. Demo
- 34. Annotations?
- 35. Einfacher Join @Named @RequestScoped @Join(path = "/home", to = "/faces/home.xhtml") public class HomePage { /* your code */ }
- 37. Mit View-Parametern @Named @RequestScoped @Join(path = "/products/{category}", to = "/faces/products.xhtml") public class ProductListPage { // <f:viewParam name=“category“ ...> private String category; /* ... */ }
- 38. Ohne View-Parameter @Named @RequestScoped @Join(path = "/products/{category}", to = "/faces/products.xhtml") public class ProductListPage { @Parameter private String category; /* ... */ }
- 39. Validierung @Named @RequestScoped @Join(path = "/products/{category}", to = "/faces/products.xhtml") public class ProductListPage { @Parameter @Matches("[a-zA-Z-]+") private String category; /* ... */ }
- 40. JSF Validators @Named @RequestScoped @Join(path = "/products/{category}", to = "/faces/products.xhtml") public class ProductListPage { @Parameter @Validate(with = CategoryValidator.class) private String category; /* ... */ }
- 41. Request Actions
- 42. Request Actions @Named @RequestScoped @Join(path = "/home", to = "/faces/home.xhtml") public class HomePage { @RequestAction public void init() { /* your code */ } }
- 43. Ignore Postbacks @Named @ViewScoped @Join(path = "/home", to = "/faces/home.xhtml") public class HomePage { @RequestAction @IgnorePostback public void init() { /* your code */ } }
- 44. Deferral @Named @ViewScoped @Join(path = "/home", to = "/faces/home.xhtml") public class HomePage { @RequestAction @Deferred(before = Phase.RENDER_RESPONSE) public void prepareRender() { /* your code */ } }
- 45. Navigation
- 46. Navigation <h:link outcome="/products.xhtml"> <f:param name="category" value="books"/> Bücher </h:link> <a href="/products/books"> Bücher </a>
- 47. Navigation public class SomePage { public String actionMethod() { /* do something */ return "/products.xhtml?category=books" + "&faces-redirect=true"; } }
- 48. Navigation public class SomePage { public Navigate actionMethod() { /* do something */ return Navigate.to(ProductListPage.class) .with("category", "books"); } }
- 49. Was kann Rewrite noch?
- 51. JSF Resources <h:outputScript name="jquery.js" /> <script type="text/javascript" src="/faces/javax.faces.resource/jquery.js" /> <script type="text/javascript" src="http://dh8sm43.cloudfront.net/jquery.js" /> Erzeugt Gewünscht
- 55. Usecases • Minification – JavaScript, CSS • Compression – GZIP, Deflate • Rendering – SASS, SCSS, Markdown, Textile, ... • Custom Processing
- 57. Rendering
- 58. Beispiel: Sass $blue: #3bbfce; $margin: 16px; .content-navigation { border-color: $blue; color: darken($blue, 9%); } .border { padding: $margin / 2; margin: $margin / 2; border-color: $blue; } .content-navigation { border-color: #3bbfce; color: #2b9eab; } .border { padding: 8px; margin: 8px; border-color: #3bbfce; }
- 60. Wie migriere ich meine PrettyFaces Anwendung?
- 61. Rewrite PrettyFaces Module <dependency> <groupId>org.ocpsoft.rewrite</groupId> <artifactId>rewrite-config-prettyfaces</artifactId> <version>2.0.0.Final</version> </dependency> • Drop-In Replacement für PrettyFaces • „Sanfte“ Migration