/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* http://www.opensource.org/licenses/cddl1.php
* See the License for the specific language governing
* permissions and limitations under the License.
*/
/*
* PathParam.java
*
* Created on November 16, 2006, 2:04 PM
*
*/
package javax.ws.rs;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Binds the value of a URI template parameter or a path segment
* containing the template parameter to a resource method parameter, resource
* class field, or resource class
* bean property. The value is URL decoded unless this
* is disabled using the {@link Encoded} annotation.
* A default value can be specified using the {@link DefaultValue}
* annotation.
*
* The type of the annotated parameter, field or property must either:
* <ul>
* <li>Be {@link javax.ws.rs.core.PathSegment}, the value will be the final
* segment of the matching part of the path.
* See {@link javax.ws.rs.core.UriInfo} for a means of retrieving all request
* path segments.</li>
* <li>Be {@code List<}{@link javax.ws.rs.core.PathSegment}{@code >}, the
* value will be a list of {@code PathSegment} corresponding to the path
* segment(s) that matched the named template parameter.
* See {@link javax.ws.rs.core.UriInfo} for a means of retrieving all request
* path segments.</li>
* <li>Be a primitive type.</li>
* <li>Have a constructor that accepts a single String argument.</li>
* <li>Have a static method named <code>valueOf</code> or <code>fromString</code>
* that accepts a single
* String argument (see, for example, {@link Integer#valueOf(String)}).
* </ul>
*
* <p>The injected value corresponds to the latest use (in terms of scope) of
* the path parameter. E.g. if a class and a sub-resource method are both
* annotated with a {@link Path} containing the same URI template parameter, use
* of {@code PathParam} on a subresource method parameter will bind the value
* matching URI template parameter in the method's {@link Path} annotation.</p>
*
* <p>Because injection occurs at object creation time, use of this annotation
* on resource class fields and bean properties is only supported for the
* default per-request resource class lifecycle. Resource classes using
* other lifecycles should only use this annotation on resource method
* parameters.</p>
*
* @see Encoded
* @see DefaultValue
* @see javax.ws.rs.core.PathSegment
* @see javax.ws.rs.core.UriInfo
*/
@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface PathParam {
/**
* Defines the name of the URI template parameter whose value will be used
* to initialize the value of the annotated method parameter, class field or
* property. See {@link Path#value()} for a description of the syntax of
* template parameters.
*
* <p>E.g. a class annotated with: <code>@Path("widgets/{id}")</code>
* can have methods annotated whose arguments are annotated
* with <code>@PathParam("id")</code>.
*/
String value();
}
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