https://github.com/eclipse-ee4j/jaxrs-api: Jakarta RESTful Web Services API (Eclipse Foundation) 
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 * Copyright (c) 2012, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package javax.ws.rs.client;

import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.Cookie;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.MessageBodyWriter;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.net.URI;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Map;


Client request filter context.
A mutable class that provides request-specific information for the filter,
such as request URI, message headers, message entity or request-scoped
properties. The exposed setters allow modification of the exposed request-specific
information.

Author:Marek Potociar
Since:2.0
/**
 * Client request filter context.
 *
 * A mutable class that provides request-specific information for the filter,
 * such as request URI, message headers, message entity or request-scoped
 * properties. The exposed setters allow modification of the exposed request-specific
 * information.
 *
 * @author Marek Potociar
 * @since 2.0
 */
public interface ClientRequestContext {

    
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 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. 


Params:
  • name – a String specifying the name of the property.
See Also:
Returns:an Object containing the value of the property, or null if no property exists matching the given name.
/**
     * Returns the property with the given name registered in the current request/response
     * exchange context, or {@code null} if there is no property by that name.
     * <p>
     * A property allows filters and interceptors to exchange
     * additional custom information not already provided by this interface.
     * </p>
     * <p>
     * A list of supported properties can be retrieved using {@link #getPropertyNames()}.
     * Custom property names should follow the same convention as package names.
     * </p>
     *
     * @param name a {@code String} specifying the name of the property.
     * @return an {@code Object} containing the value of the property, or
     *         {@code null} if no property exists matching the given name.
     * @see #getPropertyNames()
     */
    public Object getProperty(String name);


    
Returns an immutable collection containing the property names available within the context of the current request/response exchange context. 
 Use the getProperty method with a property name to get the value of a property. 


See Also:
Returns:an immutable collection of property names.
/**
     * Returns an immutable {@link Collection collection} containing the property names
     * available within the context of the current request/response exchange context.
     * <p>
     * Use the {@link #getProperty} method with a property name to get the value of
     * a property.
     * </p>
     *
     * @return an immutable {@link Collection collection} of property names.
     * @see #getProperty
     */
    public Collection<String> getPropertyNames();


    
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. 


Params:
  • name –  a String specifying the name of the property.
  • object – an Object representing the property to be bound.
/**
     * 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.
     * <p>
     * A property allows a filters and interceptors to exchange
     * additional custom information not already provided by this interface.
     * </p>
     * <p>
     * A list of supported properties can be retrieved using {@link #getPropertyNames()}.
     * Custom property names should follow the same convention as package names.
     * </p>
     * <p>
     * If a {@code null} value is passed, the effect is the same as calling the
     * {@link #removeProperty(String)} method.
     * </p>
     *
     * @param name   a {@code String} specifying the name of the property.
     * @param object an {@code Object} representing the property to be bound.
     */
    public void setProperty(String name, Object object);

    
Removes a property with the given name from the current request/response exchange context. After removal, subsequent calls to getProperty to retrieve the property value will return null. 
Params:
  • name – a String specifying the name of the property to be removed.
/**
     * Removes a property with the given name from the current request/response
     * exchange context. After removal, subsequent calls to {@link #getProperty}
     * to retrieve the property value will return {@code null}.
     *
     * @param name a {@code String} specifying the name of the property to be removed.
     */
    public void removeProperty(String name);

    
Get the request URI.

Returns:request URI.
/**
     * Get the request URI.
     *
     * @return request URI.
     */
    public URI getUri();

    
Set a new request URI.

Params:
  • uri – new request URI.
/**
     * Set a new request URI.
     *
     * @param uri new request URI.
     */
    public void setUri(URI uri);

    
Get the request method.

See Also:
Returns:the request method.
/**
     * Get the request method.
     *
     * @return the request method.
     * @see javax.ws.rs.HttpMethod
     */
    public String getMethod();

    
Set the request method.

Params:
  • method – new request method.
See Also:
/**
     * Set the request method.
     *
     * @param method new request method.
     * @see javax.ws.rs.HttpMethod
     */
    public void setMethod(String method);

    
Get the mutable request headers multivalued map.

See Also:
Returns:mutable multivalued map of request headers.
/**
     * Get the mutable request headers multivalued map.
     *
     * @return mutable multivalued map of request headers.
     * @see #getStringHeaders()
     * @see #getHeaderString(String)
     */
    public MultivaluedMap<String, Object> getHeaders();

    
Get a string view of header values associated with the message. Changes in the underlying headers map are reflected in this view. 
 The method converts the non-string header values to strings using a HeaderDelegate if one is available via RuntimeDelegate.createHeaderDelegate(Class<Object>) for the class of the value or using the values toString method if a header delegate is not available. 


See Also:
Returns:response headers as a string view of header values.
/**
     * Get a string view of header values associated with the message.
     *
     * Changes in the underlying {@link #getHeaders() headers map} are reflected
     * in this view.
     * <p>
     * The method converts the non-string header values to strings using a
     * {@link javax.ws.rs.ext.RuntimeDelegate.HeaderDelegate} if one is available via
     * {@link javax.ws.rs.ext.RuntimeDelegate#createHeaderDelegate(java.lang.Class)} for the
     * class of the value or using the values {@code toString} method if a header delegate is
     * not available.
     * </p>
     *
     * @return response headers as a string view of header values.
     * @see #getHeaders()
     * @see #getHeaderString(String)
     */
    public abstract MultivaluedMap<String, String> getStringHeaders();

    
Get a message header as a single string value. Each single header value is converted to String using a HeaderDelegate if one is available via RuntimeDelegate.createHeaderDelegate(Class<Object>) for the header value class or using its toString method if a header delegate is not available. 
Params:
  • name – the message header.
See Also:
Returns:the message header value. If the message header is not present then null is returned. If the message header is present but has no value then the empty string is returned. If the message header is present more than once then the values of joined together and separated by a ',' character.
/**
     * Get a message header as a single string value.
     *
     * Each single header value is converted to String using a
     * {@link javax.ws.rs.ext.RuntimeDelegate.HeaderDelegate} if one is available
     * via {@link javax.ws.rs.ext.RuntimeDelegate#createHeaderDelegate(java.lang.Class)}
     * for the header value class or using its {@code toString} method  if a header
     * delegate is not available.
     *
     * @param name the message header.
     * @return the message header value. If the message header is not present then
     *         {@code null} is returned. If the message header is present but has no
     *         value then the empty string is returned. If the message header is present
     *         more than once then the values of joined together and separated by a ','
     *         character.
     * @see #getHeaders()
     * @see #getStringHeaders()
     */
    public String getHeaderString(String name);

    
Get message date.

Returns:the message date, otherwise null if not present.
/**
     * Get message date.
     *
     * @return the message date, otherwise {@code null} if not present.
     */
    public Date getDate();

    
Get the language of the entity.

Returns:the language of the entity or null if not specified
/**
     * Get the language of the entity.
     *
     * @return the language of the entity or {@code null} if not specified
     */
    public Locale getLanguage();

    
Get the media type of the entity.

Returns:the media type or null if not specified (e.g. there's no request entity).
/**
     * Get the media type of the entity.
     *
     * @return the media type or {@code null} if not specified (e.g. there's no
     *         request entity).
     */
    public MediaType getMediaType();

    
Get a list of media types that are acceptable for the response.

Returns:a read-only list of requested response media types sorted according
        to their q-value, with highest preference first.
/**
     * Get a list of media types that are acceptable for the response.
     *
     * @return a read-only list of requested response media types sorted according
     *         to their q-value, with highest preference first.
     */
    public List<MediaType> getAcceptableMediaTypes();

    
Get a list of languages that are acceptable for the response.

Returns:a read-only list of acceptable languages sorted according
        to their q-value, with highest preference first.
/**
     * Get a list of languages that are acceptable for the response.
     *
     * @return a read-only list of acceptable languages sorted according
     *         to their q-value, with highest preference first.
     */
    public List<Locale> getAcceptableLanguages();

    
Get any cookies that accompanied the request.

Returns:a read-only map of cookie name (String) to Cookie.
/**
     * Get any cookies that accompanied the request.
     *
     * @return a read-only map of cookie name (String) to {@link Cookie}.
     */
    public Map<String, Cookie> getCookies();

    
Check if there is an entity available in the request. The method returns true if the entity is present, returns false otherwise. 
Returns:true if there is an entity present in the message, false otherwise.
/**
     * Check if there is an entity available in the request.
     *
     * The method returns {@code true} if the entity is present, returns
     * {@code false} otherwise.
     *
     * @return {@code true} if there is an entity present in the message,
     *         {@code false} otherwise.
     */
    public boolean hasEntity();

    
Get the message entity Java instance. Returns null if the message does not contain an entity. 
Returns:the message entity or null if message does not contain an entity body.
/**
     * Get the message entity Java instance.
     *
     * Returns {@code null} if the message does not contain an entity.
     *
     * @return the message entity or {@code null} if message does not contain an
     *         entity body.
     */
    public Object getEntity();

    
Get the raw entity type information.

Returns:raw entity type.
/**
     * Get the raw entity type information.
     *
     * @return raw entity type.
     */
    public Class<?> getEntityClass();

    
Get the generic entity type information.

Returns:generic entity type.
/**
     * Get the generic entity type information.
     *
     * @return generic entity type.
     */
    public Type getEntityType();

    
Set a new message entity. The existing entity annotations and media type are preserved. 
 It is the callers responsibility to wrap the actual entity with GenericEntity if preservation of its generic type is required. 


Params:
  • entity – entity object.
See Also:
/**
     * Set a new message entity. The existing entity {@link #getEntityAnnotations() annotations}
     * and {@link #getMediaType() media type} are preserved.
     * <p>
     * It is the callers responsibility to wrap the actual entity with
     * {@link javax.ws.rs.core.GenericEntity} if preservation of its generic
     * type is required.
     * </p>
     *
     * @param entity entity object.
     * @see #setEntity(Object, java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType)
     * @see MessageBodyWriter
     */
    public void setEntity(final Object entity);

    
Set a new message entity, including the attached annotations and the media type.

 It is the callers responsibility to wrap the actual entity with GenericEntity if preservation of its generic type is required. 


Params:
  • entity –      entity object.
  • annotations – annotations attached to the entity instance.
  • mediaType –   entity media type.
See Also:
/**
     * Set a new message entity, including the attached annotations and the media type.
     * <p>
     * It is the callers responsibility to wrap the actual entity with
     * {@link javax.ws.rs.core.GenericEntity} if preservation of its generic
     * type is required.
     * </p>
     *
     * @param entity      entity object.
     * @param annotations annotations attached to the entity instance.
     * @param mediaType   entity media type.
     * @see #setEntity(Object)
     * @see MessageBodyWriter
     */
    public void setEntity(
            final Object entity,
            final Annotation[] annotations,
            final MediaType mediaType);

    
Get the annotations attached to the entity instance.

 Note that the returned annotations array contains only those annotations explicitly attached to entity instance (such as the ones attached using Entity(Object, MediaType, Annotation[]) method). The entity instance annotations array does not include annotations declared on the entity implementation class or its ancestors. 


Returns:annotations attached to the entity instance.
/**
     * Get the annotations attached to the entity instance.
     * <p>
     * Note that the returned annotations array contains only those annotations
     * explicitly attached to entity instance (such as the ones attached using
     * {@link Entity#Entity(Object, javax.ws.rs.core.MediaType, java.lang.annotation.Annotation[])} method).
     * The entity instance annotations array does not include annotations declared on the entity
     * implementation class or its ancestors.
     * </p>
     *
     * @return annotations attached to the entity instance.
     */
    public Annotation[] getEntityAnnotations();


    
Get the entity output stream. The runtime is responsible for
closing the output stream.

Returns:entity output stream.
/**
     * Get the entity output stream. The runtime is responsible for
     * closing the output stream.
     *
     * @return entity output stream.
     */
    public OutputStream getEntityStream();

    
Set a new entity output stream. The runtime is responsible for
closing the output stream.

Params:
  • outputStream – new entity output stream.
/**
     * Set a new entity output stream. The runtime is responsible for
     * closing the output stream.
     *
     * @param outputStream new entity output stream.
     */
    public void setEntityStream(OutputStream outputStream);

    
Get the client instance associated with the request.

Returns:client instance associated with the request.
/**
     * Get the client instance associated with the request.
     *
     * @return client instance associated with the request.
     */
    public Client getClient();

    
Get the immutable configuration of the request.

Returns:immutable request configuration.
/**
     * Get the immutable configuration of the request.
     *
     * @return immutable request configuration.
     */
    public Configuration getConfiguration();

    
Abort the filter chain with a response.
This method breaks the filter chain processing and returns the provided
response back to the client. The provided response goes through the
chain of applicable response filters.

Params:
  • response – response to be sent back to the client.
/**
     * Abort the filter chain with a response.
     *
     * This method breaks the filter chain processing and returns the provided
     * response back to the client. The provided response goes through the
     * chain of applicable response filters.
     *
     * @param response response to be sent back to the client.
     */
    public void abortWith(Response response);
}