Contents > Developing ColdFusion MX Applications > Managing LDAP Directories > The LDAP information structure > Schema Object class

Object class

Object classes enable LDAP to group related information. Frequently, an object class corresponds to a real object or concept, such as a country, person, room, or domain (in fact, these are all standard object type names). Each entry in an LDAP directory must belong to one or more object classes.

The following characteristics define an object class:

• The class name
• A unique object ID that identifies the class
• The attribute types that entries of the class must contain
• The attribute types that entries of the class can optionally contain
• (Optional) A superior class from which the class is derived

If an entry belongs to a class that derives from another class, the entry's objectclass attribute lists the lowest-level class and all the superior classes from which the lowest-level class derives.

When you add, modify, or delete a directory entry, you must treat the entry's object class as a possibly multivalued attribute. For example, when you add a new entry, you specify the object class in the cfldap tag attributes attribute. To retrieve an entry's object class names, specify "objectclass" in the list of query attributes. To retrieve entries that provide a specific type of information, you can use the object class name in the cfldap tag filter attribute.

Contents > Developing ColdFusion MX Applications > Managing LDAP Directories > The LDAP information structure > Schema Object class

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