javax.ws.rs.MatrixParam Maven / Gradle / Ivy
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/*
* Copyright (c) 2010, 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;
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;
/**
* Binds the value(s) of a URI matrix parameter to a resource method parameter, resource class
* field, or resource class bean property. Values are URL decoded unless this is disabled using the
* {@link Encoded} annotation. A default value can be specified using the {@link DefaultValue}
* annotation.
*
* Note that the {@code @MatrixParam} {@link #value() annotation value} refers to a name of a
* matrix parameter that resides in the last matched path segment of the {@link Path}-annotated Java
* structure that injects the value of the matrix parameter.
*
*
The type {@code T} of the annotated parameter, field or property must either:
*
*
* - Be a primitive type
*
- Have a constructor that accepts a single {@code String} argument
*
- Have a static method named {@code valueOf} or {@code fromString} that accepts a single
* {@code String} argument (see, for example, {@link Integer#valueOf(String)})
*
- Have a registered implementation of {@link javax.ws.rs.ext.ParamConverterProvider} JAX-RS
* extension SPI that returns a {@link javax.ws.rs.ext.ParamConverter} instance capable of a
* "from string" conversion for the type.
*
- Be {@code List
}, {@code Set} or {@code SortedSet}, where {@code T} satisfies 2, 3
* or 4 above. The resulting collection is read-only.
*
*
* If the type is not one of the collection types listed in 5 above and the matrix parameter is
* represented by multiple values then the first value (lexically) of the parameter is used.
*
*
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.
*
* @author Paul Sandoz
* @author Marc Hadley
* @see DefaultValue
* @see Encoded
* @see Matrix URIs
* @since 1.0
*/
@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface MatrixParam {
/**
* Defines the name of the URI matrix parameter whose value will be used to initialize the value
* of the annotated method argument, class field or bean property. The name is specified in
* decoded form, any percent encoded literals within the value will not be decoded and will
* instead be treated as literal text. E.g. if the parameter name is "a b" then the value of the
* annotation is "a b", not "a+b" or "a%20b".
*/
String value();
}