javax.servlet.HttpConstraintElement Maven / Gradle / Ivy
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package javax.servlet;
import java.util.*;
import javax.servlet.annotation.HttpConstraint;
import javax.servlet.annotation.ServletSecurity.EmptyRoleSemantic;
import javax.servlet.annotation.ServletSecurity.TransportGuarantee;
/**
* Java Class representation of an {@link HttpConstraint} annotation value.
*
* @since Servlet 3.0
*/
public class HttpConstraintElement {
private EmptyRoleSemantic emptyRoleSemantic;
private TransportGuarantee transportGuarantee;
private String[] rolesAllowed;
/**
* Constructs a default HTTP constraint element
*/
public HttpConstraintElement() {
this(EmptyRoleSemantic.PERMIT);
}
/**
* Convenience constructor to establish EmptyRoleSemantic.DENY
*
* @param semantic should be EmptyRoleSemantic.DENY
*/
public HttpConstraintElement(EmptyRoleSemantic semantic) {
this(semantic, TransportGuarantee.NONE, new String[0]);
}
/**
* Constructor to establish non-empty getRolesAllowed and/or
* TransportGuarantee.CONFIDENTIAL.
*
* @param guarantee TransportGuarantee.NONE or
* TransportGuarantee.CONFIDENTIAL
* @param roleNames the names of the roles that are to be
* allowed access
*/
public HttpConstraintElement(TransportGuarantee guarantee,
String... roleNames) {
this(EmptyRoleSemantic.PERMIT, guarantee, roleNames);
}
/**
* Constructor to establish all of getEmptyRoleSemantic,
* getRolesAllowed, and getTransportGuarantee.
*
* @param semantic EmptyRoleSemantic.DENY or
* EmptyRoleSemantic.PERMIT
* @param guarantee TransportGuarantee.NONE or
* TransportGuarantee.CONFIDENTIAL
* @param roleNames the names of the roles that are to be allowed
* access, or missing if the semantic is EmptyRoleSemantic.DENY
*/
public HttpConstraintElement(EmptyRoleSemantic semantic,
TransportGuarantee guarantee, String... roleNames) {
if (semantic == EmptyRoleSemantic.DENY && roleNames.length > 0) {
throw new IllegalArgumentException(
"Deny semantic with rolesAllowed");
}
this.emptyRoleSemantic = semantic;
this.transportGuarantee = guarantee;
this.rolesAllowed = copyStrings(roleNames);
}
/**
* Gets the default authorization semantic.
*
* This value is insignificant when getRolesAllowed
* returns a non-empty array, and should not be specified when a
* non-empty array is specified for getRolesAllowed.
*
* @return the {@link EmptyRoleSemantic} to be applied when
* getRolesAllowed returns an empty (that is, zero-length)
* array
*/
public EmptyRoleSemantic getEmptyRoleSemantic() {
return this.emptyRoleSemantic;
}
/**
* Gets the data protection requirement (i.e., whether or not SSL/TLS is
* required) that must be satisfied by the transport connection.
*
* @return the {@link TransportGuarantee} indicating the data
* protection that must be provided by the connection
*/
public TransportGuarantee getTransportGuarantee() {
return this.transportGuarantee;
}
/**
* Gets the names of the authorized roles.
*
*
Duplicate role names appearing in getRolesAllowed are insignificant
* and may be discarded. The String "*" has no special meaning
* as a role name (should it occur in getRolesAllowed).
*
* @return a (possibly empty) array of role names. When the
* array is empty, its meaning depends on the value of
* {@link #getEmptyRoleSemantic}. If its value is DENY,
* and getRolesAllowed returns an empty array,
* access is to be denied independent of authentication state and
* identity. Conversely, if its value is 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 of
* {@link #getEmptyRoleSemantic}).
*/
public String[] getRolesAllowed() {
return copyStrings(this.rolesAllowed);
}
private String[] copyStrings(String[] strings) {
String[] arr = null;
if (strings != null) {
int len = strings.length;
arr = new String[len];
if (len > 0) {
System.arraycopy(strings, 0, arr, 0, len);
}
}
return ((arr != null) ? arr : new String[0]);
}
}