play.routing

Class RoutingDsl

java.lang.Object

play.routing.RoutingDsl

public class RoutingDsl
extends java.lang.Object

A DSL for building a router.

This DSL matches requests based on method and a path pattern, and is able to extract up to three parameters out of the path pattern to pass into lambdas.

The passed in lambdas may optionally declare the types of the input parameters. If they don't, the JVM will infer a type of Object, but the parameters themselves are passed in as Strings. Supported types are java.lang.Integer, java.lang.Long, java.lang.Float, java.lang.Double, java.lang.Boolean, and any class that extends play.mvc.PathBindable. The router will attempt to decode parameters using a PathBindable for each of those types, if it fails it will return a 400 error.

Example usage:

 import javax.inject.*;
 import play.mvc.*;
 import play.routing.*;
 import play.libs.json.*;
 import play.api.routing.Router;

 public class MyRouterBuilder extends Controller {

   private final RoutingDsl routingDsl;

   \@Inject
   public MyRouterBuilder(RoutingDsl routingDsl) {
     this.routingDsl = routingDsl;
   }

   public Router getRouter() {
     return this.routingDsl

       .GET("/hello/:to").routeTo(to -> ok("Hello " + to))

       .POST("/api/items/:id").routeAsync((Integer id) -> {
         return Items.save(id,
           Json.fromJson(request().body().asJson(), Item.class)
         ).map(result -> ok("Saved item with id " + id));
       })

       .build();
   }
 }
 

The path pattern supports three different types of parameters, path segment parameters, prefixed with :, full path parameters, prefixed with *, and regular expression parameters, prefixed with $ and post fixed with a regular expression in angled braces.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	RoutingDsl.PathPatternMatcher A matcher for routes.

Constructor Summary

Constructors

Constructor and Description
RoutingDsl(BodyParser.Default bodyParser, play.core.j.JavaContextComponents contextComponents)

Method Summary

Modifier and Type	Method and Description
Router	build() Build the router.
RoutingDsl.PathPatternMatcher	DELETE(java.lang.String pathPattern) Create a DELETE route for the given path pattern.
static RoutingDsl	fromComponents(BuiltInComponents components)
RoutingDsl.PathPatternMatcher	GET(java.lang.String pathPattern) Create a GET route for the given path pattern.
RoutingDsl.PathPatternMatcher	HEAD(java.lang.String pathPattern) Create a HEAD route for the given path pattern.
RoutingDsl.PathPatternMatcher	match(java.lang.String method, java.lang.String pathPattern) Create a route for the given method and path pattern.
RoutingDsl.PathPatternMatcher	OPTIONS(java.lang.String pathPattern) Create a OPTIONS route for the given path pattern.
RoutingDsl.PathPatternMatcher	PATCH(java.lang.String pathPattern) Create a PATCH route for the given path pattern.
RoutingDsl.PathPatternMatcher	POST(java.lang.String pathPattern) Create a POST route for the given path pattern.
RoutingDsl.PathPatternMatcher	PUT(java.lang.String pathPattern) Create a PUT route for the given path pattern.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RoutingDsl

@Inject
public RoutingDsl(BodyParser.Default bodyParser,
                          play.core.j.JavaContextComponents contextComponents)

Method Detail

fromComponents

public static RoutingDsl fromComponents(BuiltInComponents components)

GET

public RoutingDsl.PathPatternMatcher GET(java.lang.String pathPattern)

Create a GET route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A GET route matcher.

HEAD

public RoutingDsl.PathPatternMatcher HEAD(java.lang.String pathPattern)

Create a HEAD route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A HEAD route matcher.

POST

public RoutingDsl.PathPatternMatcher POST(java.lang.String pathPattern)

Create a POST route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A POST route matcher.

PUT

public RoutingDsl.PathPatternMatcher PUT(java.lang.String pathPattern)

Create a PUT route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A PUT route matcher.

DELETE

public RoutingDsl.PathPatternMatcher DELETE(java.lang.String pathPattern)

Create a DELETE route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A DELETE route matcher.

PATCH

public RoutingDsl.PathPatternMatcher PATCH(java.lang.String pathPattern)

Create a PATCH route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A PATCH route matcher.

OPTIONS

public RoutingDsl.PathPatternMatcher OPTIONS(java.lang.String pathPattern)

Create a OPTIONS route for the given path pattern.

Parameters:

pathPattern - The path pattern.

Returns:

A OPTIONS route matcher.

match

public RoutingDsl.PathPatternMatcher match(java.lang.String method,
                                           java.lang.String pathPattern)

Create a route for the given method and path pattern.

Parameters:

method - The method;

pathPattern - The path pattern.

Returns:

A route matcher.

build

public Router build()

Build the router.

Returns:

The built router.