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package javax.ws.rs;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Defines the media type(s) that the methods of a resource class or
 * {@link javax.ws.rs.ext.MessageBodyWriter} can produce.
 * If not specified then a container will assume that any type can be produced.
 * Method level annotations override a class level annotation. A container
 * is responsible for ensuring that the method invoked is capable of producing
 * one of the media types requested in the HTTP request. If no such method is
 * available the container must respond with a HTTP "406 Not Acceptable" as
 * specified by RFC 2616.
 *
 * <p>A method for which there is a single-valued {@code @Produces}
 * is not required to set the media type of representations that it produces:
 * the container will use the value of the {@code @Produces} when
 * sending a response.</p>
 *
 * @author Paul Sandoz
 * @author Marc Hadley
 * @see javax.ws.rs.ext.MessageBodyWriter
 * @since 1.0
 */
@Inherited
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Produces {

    /**
     * A list of media types. Each entry may specify a single type or consist
     * of a comma separated list of types, with any leading or trailing white-spaces
     * in a single type entry being ignored. For example:
     * <pre>
     *  {"image/jpeg, image/gif ", " image/png"}
     * </pre>
     * Use of the comma-separated form allows definition of a common string constant
     * for use on multiple targets.
     */
    String[] value() default "*/*";
}
