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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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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 HTTP header to a resource method parameter,
 * resource class field, or resource class bean property. A default value
 * can be specified using the {@link DefaultValue} annotation.
 *
 * 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}
 * 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
 * header 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 javax.ws.rs.core.HttpHeaders
 * @since 1.0
 */
@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface HeaderParam {

    /**
     * Defines the name of the HTTP header whose value will be used
     * to initialize the value of the annotated method argument, class field or
     * bean property. Case insensitive.
     */
    String value();
}