Package org.forgerock.opendj.ldap.controls

Interface Control

All Known Implementing Classes:
AdNotificationRequestControl, AssertionRequestControl, AuthorizationIdentityRequestControl, AuthorizationIdentityResponseControl, EntryChangeNotificationResponseControl, GenericControl, GetEffectiveRightsRequestControl, ManageDsaItRequestControl, MatchedValuesRequestControl, PasswordExpiredResponseControl, PasswordExpiringResponseControl, PasswordPolicyRequestControl, PasswordPolicyResponseControl, PermissiveModifyRequestControl, PersistentSearchRequestControl, PostReadRequestControl, PostReadResponseControl, PreReadRequestControl, PreReadResponseControl, ProxiedAuthV1RequestControl, ProxiedAuthV2RequestControl, RelaxRulesRequestControl, ServerSideSortRequestControl, ServerSideSortResponseControl, SimplePagedResultsControl, SubentriesRequestControl, SubtreeDeleteRequestControl, VirtualListViewRequestControl, VirtualListViewResponseControl
public interface Control
Controls provide a mechanism whereby the semantics and arguments of existing LDAP operations may be extended. One or more controls may be attached to a single LDAP message. A control only affects the semantics of the message it is attached to. Controls sent by clients are termed 'request controls', and those sent by servers are termed 'response controls'.

NOTE: Implementations of Control must be immutable.

To determine whether a directory server supports a given control, read the list of supported controls from the root DSE to get a collection of control OIDs, and then check for a match: 

 
 Connection connection = ...;
 Collection<String> supported =
     RootDSE.readRootDSE(connection).getSupportedControls();

 Control control = ...;
 String OID = control.getOID();
 if (supported != null && !supported.isEmpty() && supported.contains(OID)) {
     // The control is supported. Use it here...
 }
See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    getAlias()
    Returns the control "friendly name" alias for the control.
    String
    getOid()
    Returns the numeric OID associated with this control.
    ByteString
    getValue()
    Returns the value, if any, associated with this control.
    boolean
    hasValue()
    Returns true if this control has a value.
    boolean
    isCritical()
    Returns true if it is unacceptable to perform the operation without applying the semantics of this control.

  • Method Details

    • getOid

      String getOid()
      Returns the numeric OID associated with this control.
      Returns:
      The numeric OID associated with this control.

    • getValue

      ByteString getValue()
      Returns the value, if any, associated with this control. Its format is defined by the specification of this control.
      Returns:
      The value associated with this control, or null if there is no value.

    • hasValue

      boolean hasValue()
      Returns true if this control has a value. In some circumstances it may be useful to determine if a control has a value, without actually calculating the value and incurring any performance costs.
      Returns:
      true if this control has a value, or false if there is no value.

    • isCritical

      boolean isCritical()
      Returns true if it is unacceptable to perform the operation without applying the semantics of this control.

      The criticality field only has meaning in controls attached to request messages (except UnbindRequest). For controls attached to response messages and the UnbindRequest, the criticality field SHOULD be false, and MUST be ignored by the receiving protocol peer. A value of true indicates that it is unacceptable to perform the operation without applying the semantics of the control.

      Returns:
      true if this control must be processed by the Directory Server, or false if it can be ignored.

    • getAlias

      String getAlias()
      Returns the control "friendly name" alias for the control.
      Returns:
      "Friendly name" alias for the control.