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/*
 * HeaderParam.java
 *
 * Created on January 24, 2007, 2:33 PM
 *
 */

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 T of the annotated parameter, field or property 
 * must either:
 * 
    *
  1. Be a primitive type
  2. *
  3. Have a constructor that accepts a single String argument
  4. *
  5. Have a static method named valueOf or fromString * that accepts a single * String argument (see, for example, {@link Integer#valueOf(String)})
  6. *
  7. Be List<T>, Set<T> or * SortedSet<T>, where T satisfies 2 or 3 above. * The resulting collection is read-only.
  8. *
* *

If the type is not one of those listed in 4 above then the first value * (lexically) of the header 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.

* * @see DefaultValue * @see javax.ws.rs.core.HttpHeaders */ @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(); }




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