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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 ServletSecurity annotation to represent security constraints on specific HTTP protocol messages. 
Since:Servlet 3.0
/**
 * 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

Returns:the name of an HTTP protocol method. value
may not be null, or the empty string, and must be a
legitimate HTTP Method name as defined by RFC 2616.
/**
     * 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 rolesAllowed returns a
non-empty array, and should not be specified when a non-empty
array is specified for rolesAllowed.

Returns:the EmptyRoleSemantic to be applied when rolesAllowed returns an empty (that is, zero-length) array.
/**
     * 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.

Returns:the TransportGuarantee indicating the data protection that must be provided by the connection.
/**
     * 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
"*" has no special meaning as a role name (should it occur in
rolesAllowed).

Returns:an array of zero or more role names. When the array contains
zero elements, its meaning depends on the value returned by
emptyRoleSemantic. If emptyRoleSemantic returns
DENY, and rolesAllowed returns a zero length array,
access is to be denied independent of authentication state and identity.
Conversely, if emptyRoleSemantic returns
PERMIT, 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 emptyRoleSemantic).
/**
     * 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 {};
}