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package javax.servlet.annotation;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import javax.servlet.annotation.ServletSecurity.EmptyRoleSemantic;
import javax.servlet.annotation.ServletSecurity.TransportGuarantee;
/**
* This annotation is used within the {@link ServletSecurity} annotation to
* represent security constraints on specific HTTP protocol messages.
*
* @since Servlet 3.0
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
public @interface HttpMethodConstraint {
/**
* Http protocol method name
*
* @return the name of an HTTP protocol method. <code>value</code>
* may not be null, or the empty string, and must be a
* legitimate HTTP Method name as defined by RFC 2616.
*/
String value();
/**
* The default authorization semantic.
* This value is insignificant when <code>rolesAllowed</code> returns a
* non-empty array, and should not be specified when a non-empty
* array is specified for <tt>rolesAllowed</tt>.
*
* @return the {@link EmptyRoleSemantic} to be applied when
* <code>rolesAllowed</code> returns an empty (that is, zero-length) array.
*/
EmptyRoleSemantic emptyRoleSemantic() default EmptyRoleSemantic.PERMIT;
/**
* The data protection requirements (i.e., whether or not SSL/TLS is
* required) that must be satisfied by the connections on which requests
* arrive.
*
* @return the {@link TransportGuarantee}
* indicating the data protection that must be provided by the connection.
*/
TransportGuarantee transportGuarantee() default TransportGuarantee.NONE;
/**
* The names of the authorized roles.
*
* Duplicate role names appearing in rolesAllowed are insignificant and
* may be discarded during runtime processing of the annotation. The String
* <tt>"*"</tt> has no special meaning as a role name (should it occur in
* rolesAllowed).
*
* @return an array of zero or more role names. When the array contains
* zero elements, its meaning depends on the value returned by
* <code>emptyRoleSemantic</code>. If <code>emptyRoleSemantic</code> returns
* <tt>DENY</tt>, and <code>rolesAllowed</code> returns a zero length array,
* access is to be denied independent of authentication state and identity.
* Conversely, if <code>emptyRoleSemantic</code> returns
* <code>PERMIT</code>, it indicates that access is to be allowed
* independent of authentication state and identity. When the array
* contains the names of one or more roles, it indicates that access is
* contingent on membership in at least one of the named roles (independent
* of the value returned by <code>emptyRoleSemantic</code>).
*/
String[] rolesAllowed() default {};
}