javax.ws.rs.ext

Class RuntimeDelegate

java.lang.Object

javax.ws.rs.ext.RuntimeDelegate

public abstract class RuntimeDelegate
extends Object

Implementations of JAX-RS provide a concrete subclass of RuntimeDelegate and various JAX-RS API methods defer to methods of RuntimeDelegate for their functionality. Regular users of JAX-RS are not expected to use this class directly and overriding an implementation of this class with a user supplied subclass may cause unexpected behavior.

Since:

1.0

Author:

Paul Sandoz, Marc Hadley

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	RuntimeDelegate.HeaderDelegate<T> Defines the contract for a delegate that is responsible for converting between the String form of a HTTP header and the corresponding JAX-RS type T.

Field Summary

Fields

Modifier and Type	Field and Description
static String	JAXRS_RUNTIME_DELEGATE_PROPERTY Name of the property identifying the RuntimeDelegate implementation to be returned from getInstance().

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RuntimeDelegate() Allows custom implementations to extend the RuntimeDelegate class.

Method Summary

Modifier and Type	Method and Description
abstract <T> T	createEndpoint(Application application, Class<T> endpointType) Create a configured instance of the supplied endpoint type.
abstract <T> RuntimeDelegate.HeaderDelegate<T>	createHeaderDelegate(Class<T> type) Obtain an instance of a RuntimeDelegate.HeaderDelegate for the supplied class.
abstract Link.Builder	createLinkBuilder() Create a new instance of a Link.Builder.
abstract Response.ResponseBuilder	createResponseBuilder() Create a new instance of a Response.ResponseBuilder.
abstract UriBuilder	createUriBuilder() Create a new instance of a UriBuilder.
abstract Variant.VariantListBuilder	createVariantListBuilder() Create a new instance of a Variant.VariantListBuilder.
static RuntimeDelegate	getInstance() Obtain a RuntimeDelegate instance.
static void	setInstance(RuntimeDelegate rd) Set the runtime delegate that will be used by JAX-RS classes.

Methods inherited from class java.lang.Object

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

Field Detail

JAXRS_RUNTIME_DELEGATE_PROPERTY

public static final String JAXRS_RUNTIME_DELEGATE_PROPERTY

Name of the property identifying the RuntimeDelegate implementation to be returned from getInstance().

See Also:

Constant Field Values

Constructor Detail

RuntimeDelegate

protected RuntimeDelegate()

Allows custom implementations to extend the RuntimeDelegate class.

Method Detail

getInstance

public static RuntimeDelegate getInstance()

Obtain a RuntimeDelegate instance. If an instance had not already been created and set via setInstance(RuntimeDelegate), the first invocation will create an instance which will then be cached for future use.

The algorithm used to locate the RuntimeDelegate subclass to use consists of the following steps:

• If a resource with the name of META-INF/services/javax.ws.rs.ext.RuntimeDelegate exists, then its first line, if present, is used as the UTF-8 encoded name of the implementation class.
• If the $java.home/lib/jaxrs.properties file exists and it is readable by the java.util.Properties.load(InputStream) method and it contains an entry whose key is javax.ws.rs.ext.RuntimeDelegate, then the value of that entry is used as the name of the implementation class.
• If a system property with the name javax.ws.rs.ext.RuntimeDelegate is defined, then its value is used as the name of the implementation class.
• Finally, a default implementation class name is used.

Returns:

an instance of RuntimeDelegate.

setInstance

public static void setInstance(RuntimeDelegate rd)

Set the runtime delegate that will be used by JAX-RS classes. If this method is not called prior to getInstance() then an implementation will be sought as described in getInstance().

Parameters:

rd - the runtime delegate instance

Throws:

SecurityException - if there is a security manager and the permission ReflectPermission("suppressAccessChecks") has not been granted.

createUriBuilder

public abstract UriBuilder createUriBuilder()

Create a new instance of a UriBuilder.

Returns:

new UriBuilder instance.

See Also:

UriBuilder

createResponseBuilder

public abstract Response.ResponseBuilder createResponseBuilder()

Create a new instance of a Response.ResponseBuilder.

Returns:

new ResponseBuilder instance.

See Also:

Response.ResponseBuilder

createVariantListBuilder

public abstract Variant.VariantListBuilder createVariantListBuilder()

Create a new instance of a Variant.VariantListBuilder.

Returns:

new VariantListBuilder instance.

See Also:

Variant.VariantListBuilder

createEndpoint

public abstract <T> T createEndpoint(Application application,
                                     Class<T> endpointType)
                              throws IllegalArgumentException,
                                     UnsupportedOperationException

Create a configured instance of the supplied endpoint type. How the returned endpoint instance is published is dependent on the type of endpoint.

Type Parameters:

T - endpoint type.

Parameters:

application - the application configuration.

endpointType - the type of endpoint instance to be created.

Returns:

a configured instance of the requested type.

Throws:

IllegalArgumentException - if application is null or the requested endpoint type is not supported.

UnsupportedOperationException - if the implementation supports no endpoint types.

createHeaderDelegate

public abstract <T> RuntimeDelegate.HeaderDelegate<T> createHeaderDelegate(Class<T> type)
                                                                    throws IllegalArgumentException

Obtain an instance of a RuntimeDelegate.HeaderDelegate for the supplied class. An implementation is required to support the following values for type: CacheControl, Cookie, EntityTag, Link, NewCookie, MediaType and java.util.Date.

Type Parameters:

T - header type.

Parameters:

type - the class of the header.

Returns:

an instance of HeaderDelegate for the supplied type.

Throws:

IllegalArgumentException - if type is null.

See Also:

RuntimeDelegate.HeaderDelegate

createLinkBuilder

public abstract Link.Builder createLinkBuilder()

Create a new instance of a Link.Builder.

Returns:

new Link.Builder instance.

See Also:

Link.Builder