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package javax.ws.rs.client;

import java.net.URI;

import javax.ws.rs.core.Configurable;
import javax.ws.rs.core.Link;
import javax.ws.rs.core.UriBuilder;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;

/**
 * Client is the main entry point to the fluent API used to build and execute client
 * requests in order to consume responses returned.
 * 

* Clients are heavy-weight objects that manage the client-side communication * infrastructure. Initialization as well as disposal of a {@code Client} instance * may be a rather expensive operation. It is therefore advised to construct only * a small number of {@code Client} instances in the application. Client instances * must be {@link #close() properly closed} before being disposed to avoid leaking * resources. * * @author Marek Potociar * @see javax.ws.rs.core.Configurable * @since 2.0 */ public interface Client extends Configurable { /** * Close client instance and all it's associated resources. Subsequent calls * have no effect and are ignored. Once the client is closed, invoking any * other method on the client instance would result in an {@link IllegalStateException} * being thrown. *

* Calling this method effectively invalidates all {@link WebTarget resource targets} * produced by the client instance. Invoking any method on such targets once the client * is closed would result in an {@link IllegalStateException} being thrown. */ public void close(); /** * Build a new web resource target. * * @param uri web resource URI. May contain template parameters. Must not be {@code null}. * @return web resource target bound to the provided URI. * @throws IllegalArgumentException in case the supplied string is not a valid URI template. * @throws NullPointerException in case the supplied argument is {@code null}. */ public WebTarget target(String uri); /** * Build a new web resource target. * * @param uri web resource URI. Must not be {@code null}. * @return web resource target bound to the provided URI. * @throws NullPointerException in case the supplied argument is {@code null}. */ public WebTarget target(URI uri); /** * Build a new web resource target. * * @param uriBuilder web resource URI represented as URI builder. Must not be {@code null}. * @return web resource target bound to the provided URI. * @throws NullPointerException in case the supplied argument is {@code null}. */ public WebTarget target(UriBuilder uriBuilder); /** * Build a new web resource target. * * @param link link to a web resource. Must not be {@code null}. * @return web resource target bound to the linked web resource. * @throws NullPointerException in case the supplied argument is {@code null}. */ public WebTarget target(Link link); /** *

Build an invocation builder from a link. It uses the URI and the type * of the link to initialize the invocation builder. The type is used as the * initial value for the HTTP Accept header, if present.

* * @param link link to build invocation from. Must not be {@code null}. * @return newly created invocation builder. * @throws NullPointerException in case link is {@code null}. */ public Invocation.Builder invocation(Link link); /** * Get the SSL context configured to be used with the current client run-time. * * @return SSL context configured to be used with the current client run-time. */ public SSLContext getSslContext(); /** * Get the hostname verifier configured in the client or {@code null} in case * no hostname verifier has been configured. * * @return client hostname verifier or {@code null} if not set. */ public HostnameVerifier getHostnameVerifier(); }




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