javax.ws.rs.ext

Interface InterceptorContext

All Known Subinterfaces:

ReaderInterceptorContext, WriterInterceptorContext

public interface InterceptorContext

Context shared by message body interceptors that can be used to wrap calls to MessageBodyReader.readFrom(java.lang.Class<T>, java.lang.reflect.Type, java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType, javax.ws.rs.core.MultivaluedMap<java.lang.String, java.lang.String>, java.io.InputStream) and MessageBodyWriter.writeTo(T, java.lang.Class<?>, java.lang.reflect.Type, java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType, javax.ws.rs.core.MultivaluedMap<java.lang.String, java.lang.Object>, java.io.OutputStream). The getters and setters in this context class correspond to the parameters in the aforementioned methods.

Since:

2.0

Author:

Santiago Pericas-Geertsen, Bill Burke

See Also:

ReaderInterceptor, WriterInterceptor, ReaderInterceptorContext, WriterInterceptorContext

Method Summary

Modifier and Type	Method and Description
Annotation[]	getAnnotations() Get an array of the annotations formally declared on the artifact that initiated the intercepted entity provider invocation.
Type	getGenericType() Get the type of the object to be produced or written.
MediaType	getMediaType() Get media type of HTTP entity.
Object	getProperty(String name) Returns the property with the given name registered in the current request/response exchange context, or null if there is no property by that name.
Collection<String>	getPropertyNames() Returns an immutable collection containing the property names available within the context of the current request/response exchange context.
Class<?>	getType() Get Java type supported by corresponding message body provider.
void	removeProperty(String name) Removes a property with the given name from the current request/response exchange context.
void	setAnnotations(Annotation[] annotations) Update annotations on the formal declaration of the artifact that initiated the intercepted entity provider invocation.
void	setGenericType(Type genericType) Update type of the object to be produced or written.
void	setMediaType(MediaType mediaType) Update media type of HTTP entity.
void	setProperty(String name, Object object) Binds an object to a given property name in the current request/response exchange context.
void	setType(Class<?> type) Update Java type before calling message body provider.

Method Detail

getProperty

Object getProperty(String name)

Returns the property with the given name registered in the current request/response exchange context, or null if there is no property by that name.

A property allows a filters and interceptors to exchange additional custom information not already provided by this interface.

A list of supported properties can be retrieved using getPropertyNames(). Custom property names should follow the same convention as package names.

In a Servlet container, on the server side, the properties are backed by the ServletRequest and contain all the attributes available in the ServletRequest.

Parameters:

name - a String specifying the name of the property.

Returns:

an Object containing the value of the property, or null if no property exists matching the given name.

See Also:

getPropertyNames()

getPropertyNames

Collection<String> getPropertyNames()

Returns an immutable collection containing the property names available within the context of the current request/response exchange context.

Use the getProperty(java.lang.String) method with a property name to get the value of a property.

In a Servlet container, the properties are synchronized with the ServletRequest and expose all the attributes available in the ServletRequest. Any modifications of the properties are also reflected in the set of properties of the associated ServletRequest.

Returns:

an immutable collection of property names.

See Also:

getProperty(java.lang.String)

setProperty

void setProperty(String name,
                 Object object)

Binds an object to a given property name in the current request/response exchange context. If the name specified is already used for a property, this method will replace the value of the property with the new value.

A property allows a filters and interceptors to exchange additional custom information not already provided by this interface.

A list of supported properties can be retrieved using getPropertyNames(). Custom property names should follow the same convention as package names.

If a null value is passed, the effect is the same as calling the removeProperty(String) method.

In a Servlet container, on the server side, the properties are backed by the ServletRequest and contain all the attributes available in the ServletRequest.

Parameters:

name - a String specifying the name of the property.

object - an Object representing the property to be bound.

removeProperty

void removeProperty(String name)

Removes a property with the given name from the current request/response exchange context. After removal, subsequent calls to getProperty(java.lang.String) to retrieve the property value will return null.

In a Servlet container, on the server side, the properties are backed by the ServletRequest and contain all the attributes available in the ServletRequest.

Parameters:

name - a String specifying the name of the property to be removed.

getAnnotations

Annotation[] getAnnotations()

Get an array of the annotations formally declared on the artifact that initiated the intercepted entity provider invocation. E.g. if the message body is to be converted into a method parameter, this will be the annotations on that parameter returned by Method.getParameterAnnotations(); if the server-side response entity instance is to be converted into an output stream, this will be the annotations on the matched resource method returned by Method.getAnnotations(). This method may return an empty array in case the interceptor is not invoked in a context of any particular resource method (e.g. as part of the client API), but will never return null.

Returns:

annotations declared on the artifact that initiated the intercepted entity provider invocation.

setAnnotations

void setAnnotations(Annotation[] annotations)

Update annotations on the formal declaration of the artifact that initiated the intercepted entity provider invocation. Calling this method has no effect in the client API.

Parameters:

annotations - updated annotations declarataion of the artifact that initiated the intercepted entity provider invocation. Must not be null.

Throws:

NullPointerException - in case the input parameter is null.

getType

Class<?> getType()

Get Java type supported by corresponding message body provider.

Returns:

java type supported by provider

setType

void setType(Class<?> type)

Update Java type before calling message body provider.

Parameters:

type - java type for provider

getGenericType

Type getGenericType()

Get the type of the object to be produced or written.

Returns:

type of object produced or written

setGenericType

void setGenericType(Type genericType)

Update type of the object to be produced or written.

Parameters:

genericType - new type for object

getMediaType

MediaType getMediaType()

Get media type of HTTP entity.

Returns:

media type of HTTP entity

setMediaType

void setMediaType(MediaType mediaType)

Update media type of HTTP entity.

Parameters:

mediaType - new type for HTTP entity