org.apache.pulsar.shade.javax.ws.rs.HeaderParam Maven / Gradle / Ivy
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package org.apache.pulsar.shade.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 org.apache.pulsar.shade.javax.ws.rs.ext.ParamConverterProvider}
* JAX-RS extension SPI that returns a {@link org.apache.pulsar.shade.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();
}