package cc.blynk.core.http.annotation;
import java.lang.annotation.*;
/**
* Binds the value(s) of a HTTP query parameter to a resource classMethod parameter,
* resource class field, or resource class bean property.
* Values are URL decoded unless this is disabled using the
* annotation. A default value can be specified using the
* annotation.
*
* The type {@code T} of the annotated parameter, field or property must
* either:
* <ol>
* <li>Be a primitive type</li>
* <li>Have a constructor that accepts a single {@code String} argument</li>
* <li>Have a static classMethod named {@code valueOf} or {@code fromString}
* that accepts a single
* {@code String} argument (see, for example, {@link Integer#valueOf(String)})</li>
* <li>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.</li>
* <li>Be {@code List<T>}, {@code Set<T>} or
* {@code SortedSet<T>}, where {@code T} satisfies 2, 3 or 4 above.
* The resulting collection is read-only.</li>
* </ol>
*
* <p>If the type is not one of the collection types listed in 5 above and the
* query parameter is represented by multiple values then the first value (lexically)
* of the parameter is used.</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 classMethod
* parameters.</p>
*
* @author Paul Sandoz
* @author Marc Hadley
* @see javax.ws.rs.core.UriInfo#getQueryParameters
* @since 1.0
*/
@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface QueryParam {
/**
* Defines the name of the HTTP query parameter whose value will be used
* to initialize the value of the annotated classMethod 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", <i>not</i> "a+b" or "a%20b".
*/
String value();
}