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/*
* Copyright (c) 2010, 2019 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 jakarta.ws.rs;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Identifies the URI path that a resource class or class method will serve requests for.
*
*
* Paths are relative. For an annotated class the base URI is the application path, see {@link ApplicationPath}. For an
* annotated method the base URI is the effective URI of the containing class. For the purposes of absolutizing a path
* against the base URI , a leading '/' in a path is ignored and base URIs are treated as if they ended in '/'. E.g.:
*
*
*
* @Path("widgets")
* public class WidgetsResource {
* @GET
* String getList() {...}
*
* @GET @Path("{id}")
* String getWidget(@PathParam("id") String id) {...}
* }
*
*
*
* In the above, if the application path is {@code catalogue} and the application is deployed at
* {@code http://example.com/}, then {@code GET} requests for {@code http://example.com/catalogue/widgets} will be
* handled by the {@code getList} method while requests for http://example.com/catalogue/widgets/nnn
* (where nnn is some value) will be handled by the {@code getWidget} method. The same would apply
* if the value of either {@code @Path} annotation started with '/'.
*
*
*
* Classes and methods may also be annotated with {@link Consumes} and {@link Produces} to filter the requests they will
* receive.
*
*
* @author Paul Sandoz
* @author Marc Hadley
* @see Consumes
* @see Produces
* @see PathParam
* @since 1.0
*/
@Target({ ElementType.TYPE, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Path {
/**
* Defines a URI template for the resource class or method, must not include matrix parameters.
*
*
* Embedded template parameters are allowed and are of the form:
*
*
*
* param = "{" *WSP name *WSP [ ":" *WSP regex *WSP ] "}"
* name = (ALPHA / DIGIT / "_")*(ALPHA / DIGIT / "." / "_" / "-" ) ; \w[\w\.-]*
* regex = *( nonbrace / "{" *nonbrace "}" ) ; where nonbrace is any char other than "{" and "}"
*
*
*
* See RFC 5234 for a description of the syntax used above and the
* expansions of {@code WSP}, {@code ALPHA} and {@code DIGIT}. In the above {@code name} is the template parameter name
* and the optional {@code regex} specifies the contents of the capturing group for the parameter. If {@code regex} is
* not supplied then a default value of {@code [^/]+} which terminates at a path segment boundary, is used. Matching of
* request URIs to URI templates is performed against encoded path values and implementations will not escape literal
* characters in regex automatically, therefore any literals in {@code regex} should be escaped by the author according
* to the rules of RFC 3986 section 3.3. Caution is
* recommended in the use of {@code regex}, incorrect use can lead to a template parameter matching unexpected URI
* paths. See Pattern for
* further information on the syntax of regular expressions. Values of template parameters may be extracted using
* {@link PathParam}.
*
*
*
* The literal part of the supplied value (those characters that are not part of a template parameter) is automatically
* percent encoded to conform to the {@code path} production of
* RFC 3986 section 3.3. Note that percent encoded values
* are allowed in the literal part of the value, an implementation will recognize such values and will not double encode
* the '%' character.
*
*
* @return URI template.
*/
String value();
}