Package netscape.ldap

Class LDAPAttributeSchema

java.lang.Object
netscape.ldap.LDAPSchemaElement
netscape.ldap.LDAPAttributeSchema
All Implemented Interfaces:
Serializable
Direct Known Subclasses:
LDAPMatchingRuleSchema, LDAPMatchingRuleUseSchema
public class LDAPAttributeSchema extends LDAPSchemaElement
The definition of an attribute type in the schema. RFC 2252, Lightweight Directory Access Protocol (v3): Attribute Syntax Definitions covers the types of information to specify when defining an attribute type. According to the RFC, the description of an attribute type can include the following:

  • an OID identifying the attribute type
  • a name identifying the attribute type
  • a description of the attribute type
  • the name of the parent attribute type
  • the syntax used by the attribute (for example, cis or int)
  • an indication of whether the attribute type is single-valued or multi-valued

When you construct an LDAPAttributeSchema object, you can specify these types of information as arguments to the constructor or in the AttributeTypeDescription format specified in RFC 2252. When an LDAP client searches an LDAP server for the schema, the server returns schema information as an object with attribute values in this format.

There a number of additional optional description fields which are not explicitly accessible through LDAPAttributeSchema, but which can be managed with setQualifier, getQualifier, and getQualifierNames:

  • EQUALITY
  • ORDERING
  • SUBSTR
  • COLLECTIVE
  • NO-USER-MODIFICATION
  • USAGE
  • OBSOLETE

To get the name, OID, and description of this attribute type definition, use the getName, getOID, and getDescription methods inherited from the abstract class LDAPSchemaElement. Optional and custom qualifiers are accessed with getQualifier and getQualifierNames from LDAPSchemaElement.

To add or remove this attribute type definition from the schema, use the add and remove methods, which this class inherits from the LDAPSchemaElement abstract class.

RFC 2252 defines AttributeTypeDescription as follows: 

     AttributeTypeDescription = "(" whsp
          numericoid whsp              ; AttributeType identifier
        [ "NAME" qdescrs ]             ; name used in AttributeType
        [ "DESC" qdstring ]            ; description
        [ "OBSOLETE" whsp ]
        [ "SUP" woid ]                 ; derived from this other
                                       ; AttributeType
        [ "EQUALITY" woid              ; Matching Rule name
        [ "ORDERING" woid              ; Matching Rule name
        [ "SUBSTR" woid ]              ; Matching Rule name
        [ "SYNTAX" whsp noidlen whsp ] ; see section 4.3
        [ "SINGLE-VALUE" whsp ]        ; default multi-valued
        [ "COLLECTIVE" whsp ]          ; default not collective
        [ "NO-USER-MODIFICATION" whsp ]; default user modifiable
        [ "USAGE" whsp AttributeUsage ]; default userApplications
        whsp ")"

    AttributeUsage =
        "userApplications"     /
        "directoryOperation"   /
        "distributedOperation" / ; DSA-shared
        "dSAOperation"          ; DSA-specific, value depends on server
Version:
1.0
See Also:

  • Field Details

  • Constructor Details

    • LDAPAttributeSchema

      protected LDAPAttributeSchema()
      Constructs a blank element.

    • LDAPAttributeSchema

      public LDAPAttributeSchema(String name, String oid, String description, int syntax, boolean single)
      Constructs an attribute type definition, using the specified information.
      Parameters:
      name - name of the attribute type
      oid - object identifier (OID) of the attribute type in dotted-string format (for example, "1.2.3.4")
      description - description of attribute type
      syntax - syntax of this attribute type. The value of this argument can be one of the following:
      • cis (case-insensitive string)
      • ces (case-exact string)
      • binary (binary data)
      • int (integer)
      • telephone (telephone number -- identical to cis, but blanks and dashes are ignored during comparisons)
      • dn (distinguished name)
      single - true if the attribute type is single-valued

    • LDAPAttributeSchema

      public LDAPAttributeSchema(String name, String oid, String description, String syntaxString, boolean single)
      Constructs an attribute type definition, using the specified information.
      Parameters:
      name - name of the attribute type
      oid - object identifier (OID) of the attribute type in dotted-string format (for example, "1.2.3.4")
      description - description of attribute type
      syntaxString - syntax of this attribute type in dotted-string format (for example, "1.2.3.4.5")
      single - true if the attribute type is single-valued

    • LDAPAttributeSchema

      public LDAPAttributeSchema(String name, String oid, String description, String syntaxString, boolean single, String superior, String[] aliases)
      Constructs an attribute type definition, using the specified information.
      Parameters:
      name - name of the attribute type
      oid - object identifier (OID) of the attribute type in dotted-string format (for example, "1.2.3.4")
      description - description of attribute type
      syntaxString - syntax of this attribute type in dotted-string format (for example, "1.2.3.4.5")
      single - true if the attribute type is single-valued
      superior - superior attribute as a name or OID; null if there is no superior
      aliases - names which are to be considered aliases for this attribute; null if there are no aliases

    • LDAPAttributeSchema

      public LDAPAttributeSchema(String raw)
      Constructs an attribute type definition based on a description in the AttributeTypeDescription format. For information on this format, (see RFC 2252, Lightweight Directory Access Protocol (v3): Attribute Syntax Definitions. This is the format that LDAP servers and clients use to exchange schema information. (For example, when you search an LDAP server for its schema, the server returns an entry with the attributes "objectclasses" and "attributetypes". The values of "attributetypes" are attribute type descriptions in this format.)

      Parameters:
      raw - definition of the attribute type in the AttributeTypeDescription format

  • Method Details

    • isSingleValued

      public boolean isSingleValued()
      Determines if the attribute type is single-valued.
      Returns:
      true if single-valued, false if multi-valued.

    • getSuperior

      public String getSuperior()
      Gets the name of the attribute that this attribute inherits from, if any.
      Returns:
      the name of the attribute from which this attribute inherits, or null if it does not have a superior.

    • getSyntax

      public int getSyntax()
      Gets the syntax of the schema element
      Returns:
      one of the following values:
      • cis (case-insensitive string)
      • ces (case-exact string)
      • binary (binary data)
      • int (integer)
      • telephone (telephone number -- identical to cis, but blanks and dashes are ignored during comparisons)
      • dn (distinguished name)
      • unknown (not a known syntax)

    • getSyntaxString

      public String getSyntaxString()
      Gets the syntax of the attribute type in dotted-decimal format, for example "1.2.3.4.5"
      Returns:
      The attribute syntax in dotted-decimal format.

    • getValue

      String getValue(boolean quotingBug)
      Prepares a value in RFC 2252 format for submission to a server
      Overrides:
      getValue in class LDAPSchemaElement
      Parameters:
      quotingBug - true if SUP and SYNTAX values are to be quoted. This is required to work with bugs in certain LDAP servers.
      Returns:
      a String ready for submission to an LDAP server.

    • toString

      public String toString()
      Gets the definition of the attribute type in a user friendly format. This is the format that the attribute type definition uses when printing the attribute type or the schema.
      Overrides:
      toString in class Object
      Returns:
      definition of the attribute type in a user friendly format.