netscape.ldap
Class LDAPSchema

java.lang.Object
  |
  +--netscape.ldap.LDAPSchema

public class LDAPSchema

extends java.lang.Object

This object represents the schema of an LDAP v3 server. You can use the fetchSchema method to retrieve the schema used by a server. (The server must support LDAP v3 and the capability to retrieve the schema over the LDAP protocol.)

After you retrieve the schema, you can use this object to get the object class, attribute type, and matching rule descriptions in the schema. You can also add your own object classes, attribute types, and matching rules to the schema.

To remove any object classes, attribute types, and matching rules that you added, call the remove methods of the LDAPObjectClassSchema, LDAPAttributeSchema, and LDAPMatchingRuleSchema classes. (This method is inherited from the LDAPSchemaElement class.)

The following class is an example of an LDAP client that can fetch the schema, get and print object class descriptions and attribute type descriptions, and add object classes and attribute types to the schema over the LDAP protocol.

 import netscape.ldap.*;
 public class TestSchema {
     public static void main( String[] args ) {
         String HOSTNAME = "ldap.netscape.com";
         int PORT_NUMBER = DEFAULT_PORT;
         String ROOT_DN = "cn=Directory Manager";
         String ROOT_PASSWORD = "23skidoo";

         LDAPConnection ld = new LDAPConnection();

         // Construct a new LDAPSchema object to get the schema.
         LDAPSchema dirSchema = new LDAPSchema();

         try {
             // Connect to the server.
             ld.connect( HOSTNAME, PORT_NUMBER );

             // Get the schema from the directory.
             dirSchema.fetchSchema( ld );

             // Get and print the inetOrgPerson object class description.
             LDAPObjectClassSchema objClass = dirSchema.getObjectClass(
                 "inetOrgPerson" );
             if ( objClass != null ) {
                 System.out.println("inetOrgPerson := "+objClass.toString());
             }

             // Get and print the definition of the userPassword attribute.
             LDAPAttributeSchema attrType = dirSchema.getAttribute(
                 "userpassword" );
             if ( attrType != null ) {
                 System.out.println("userPassword := " + attrType.toString());
             }

             // Create a new object class definition.
             String[] requiredAttrs = {"cn", "mail"};
             String[] optionalAttrs = {"sn", "phoneNumber"};
             LDAPObjectClassSchema newObjClass =
                     new LDAPObjectClassSchema( "newInetOrgPerson",
                                                "1.2.3.4.5.6.7",
                                                "top",
                                                "Experiment",
                                                requiredAttrs,
                                                optionalAttrs );

             // Authenticate as root DN to get permissions to edit the schema.
             ld.authenticate( ROOT_DN, ROOT_PASSWORD );

             // Add the new object class to the schema.
             newObjClass.add( ld );

             // Create a new attribute type "hairColor".
             LDAPAttributeSchema newAttrType =
                     new LDAPAttributeSchema( "hairColor",
                                              "1.2.3.4.5.4.3.2.1",
                                              "Blonde, red, etc",
                                              LDAPAttributeSchema.cis,
                                              false );
             // Add a custom qualifier
             newObjClass.setQualifier( "X-OWNER", "John Jacobson" );

             // Add the new attribute type to the schema.
             newAttrType.add( ld );

             // Fetch the schema again to verify that changes were made.
             dirSchema.fetchSchema( ld );

             // Get and print the new attribute type.
             newAttrType = dirSchema.getAttribute( "hairColor" );
             if ( newAttrType != null ) {
                 System.out.println("hairColor := " + newAttrType.toString());
             }

             // Get and print the new object class.
             newObjClass = dirSchema.getObjectClass( "newInetOrgPerson" );
             if ( newObjClass != null ) {
                 System.out.println("newInetOrgPerson := " +newObjClass.toString());
             }

             ld.disconnect();

         } catch ( Exception e ) {
             System.err.println( e.toString() );
             System.exit( 1 );
         }

         System.exit( 0 );
     }
 }
 

If you are using the Netscape Directory Server 3.0, you can also verify that the class and attribute type have been added through the directory server manager (go to Schema | Edit or View Attributes or Schema | Edit or View Object Classes).

To remove the classes and attribute types added by the example, see the examples under the LDAPSchemaElement class.

See Also:

LDAPAttributeSchema, LDAPObjectClassSchema, LDAPMatchingRuleSchema, LDAPSchemaElement

Constructor Summary

LDAPSchema()
Constructs a new LDAPSchema object.

Method Summary

protected void	addAttribute(LDAPAttributeSchema attrSchema) Add an attribute type schema definition to the current schema.
protected void	addMatchingRule(LDAPMatchingRuleSchema matchSchema) Add a matching rule schema definition to the current schema.
protected void	addObjectClass(LDAPObjectClassSchema objectSchema) Adds an object class schema definition to the current schema.
void	fetchSchema(LDAPConnection ld) Retrieve the entire schema from the root of a Directory Server.
void	fetchSchema(LDAPConnection ld, java.lang.String dn) Retrieve the schema for a specific entry.
LDAPAttributeSchema	getAttribute(java.lang.String name) Gets the definition of the attribute type with the specified name.
java.util.Enumeration	getAttributeNames() Get an enumeration of the names of the attribute types in this schema.
java.util.Enumeration	getAttributes() Gets an enumeration ofthe attribute type definitions in this schema.
LDAPMatchingRuleSchema	getMatchingRule(java.lang.String name) Gets the definition of a matching rule with the specified name.
java.util.Enumeration	getMatchingRuleNames() Get an enumeration of the names of the matching rules in this schema.
java.util.Enumeration	getMatchingRules() Gets an enumeration ofthe matching rule definitions in this schema.
LDAPObjectClassSchema	getObjectClass(java.lang.String name) Gets the definition of the object class with the specified name.
java.util.Enumeration	getObjectClasses() Gets an enumeration ofthe object class definitions in this schema.
java.util.Enumeration	getObjectClassNames() Get an enumeration of the names of the object classes in this schema.
static void	main(java.lang.String[] args) Fetch the schema from the LDAP server at the specified host and port, and print out the schema (including descriptions of its object classes, attribute types, and matching rules).
java.lang.String	toString() Displays the schema (including the descriptions of its object classes, attribute types, and matching rules) in an easily readable format (not the same as the format expected by an LDAP server).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LDAPSchema

public LDAPSchema()

Constructs a new LDAPSchema object. Once you construct the object, you can get the schema by calling fetchSchema.

You can also print out the schema by using the main method. For example, you can enter the following command:

 java netscape.ldap.LDAPSchema myhost.mydomain.com 389
 

Note that you need to call fetchSchema to get the schema from the server. Constructing the object does not fetch the schema.

See Also:

fetchSchema(netscape.ldap.LDAPConnection, java.lang.String), main(java.lang.String[])

Method Detail

addObjectClass

protected void addObjectClass(LDAPObjectClassSchema objectSchema)

Adds an object class schema definition to the current schema. You can also add object class schema definitions by calling the add method of your newly constructed LDAPObjectClassSchema object.

To remove an object class schema definition that you have added, call the getObjectClass method to get the LDAPObjectClassSchema object representing your object class and call the remove method.

NOTE: For information on the add and remove methods of LDAPObjectClassSchema, see the documentation for LDAPSchemaElement. (These methods are inherited from LDAPSchemaElement.)

Parameters:

objectSchema - LDAPObjectClassSchema object representing the object class schema definition to add

See Also:

LDAPObjectClassSchema, LDAPSchemaElement.add(netscape.ldap.LDAPConnection, java.lang.String), LDAPSchemaElement.remove(netscape.ldap.LDAPConnection, java.lang.String)

addAttribute

protected void addAttribute(LDAPAttributeSchema attrSchema)

Add an attribute type schema definition to the current schema. You can also add attribute type schema definitions by calling the add method of your newly constructed LDAPAttributeSchema object.

To remove an attribute type schema definition that you have added, call the getAttribute method to get the LDAPAttributeSchema object representing your attribute type and call the remove method.

NOTE: For information on the add and remove methods of LDAPAttributeSchema, see the documentation for LDAPSchemaElement. (These methods are inherited from LDAPSchemaElement.)

Parameters:

attrSchema - LDAPAttributeSchema object representing the attribute type schema definition to add

See Also:

LDAPAttributeSchema, LDAPSchemaElement.add(netscape.ldap.LDAPConnection, java.lang.String), LDAPSchemaElement.remove(netscape.ldap.LDAPConnection, java.lang.String)

addMatchingRule

protected void addMatchingRule(LDAPMatchingRuleSchema matchSchema)

Add a matching rule schema definition to the current schema. You can also add matching rule schema definitions by calling the add method of your newly constructed LDAPMatchingRuleSchema object.

To remove an attribute type schema definition that you have added, call the getMatchingRule method to get the LDAPMatchingRuleSchema object representing your matching rule and call the remove method.

NOTE: For information on the add and remove methods of LDAPMatchingRuleSchema, see the documentation for LDAPSchemaElement. (These methods are inherited from LDAPSchemaElement.)

Parameters:

matchSchema - LDAPMatchingRuleSchema object representing the matching rule schema definition to add

See Also:

LDAPMatchingRuleSchema, LDAPSchemaElement.add(netscape.ldap.LDAPConnection, java.lang.String), LDAPSchemaElement.remove(netscape.ldap.LDAPConnection, java.lang.String)

getObjectClasses

public java.util.Enumeration getObjectClasses()

Gets an enumeration ofthe object class definitions in this schema.

Returns:

an enumeration of object class definitions.

getAttributes

public java.util.Enumeration getAttributes()

Gets an enumeration ofthe attribute type definitions in this schema.

Returns:

an enumeration of attribute type definitions.

getMatchingRules

public java.util.Enumeration getMatchingRules()

Gets an enumeration ofthe matching rule definitions in this schema.

Returns:

an enumeration of matching rule definitions.

getObjectClass

public LDAPObjectClassSchema getObjectClass(java.lang.String name)

Gets the definition of the object class with the specified name.

Parameters:

name - name of the object class to find

Returns:

an LDAPObjectClassSchema object representing the object class definition, or null if not found.

getAttribute

public LDAPAttributeSchema getAttribute(java.lang.String name)

Gets the definition of the attribute type with the specified name.

Parameters:

name - name of the attribute type to find

Returns:

an LDAPAttributeSchema object representing the attribute type definition, or null if not found.

getMatchingRule

public LDAPMatchingRuleSchema getMatchingRule(java.lang.String name)

Gets the definition of a matching rule with the specified name.

Parameters:

name - name of the matching rule to find

Returns:

an LDAPMatchingRuleSchema object representing the matching rule definition, or null if not found.

getObjectClassNames

public java.util.Enumeration getObjectClassNames()

Get an enumeration of the names of the object classes in this schema.

Returns:

an enumeration of object class names (all lower-case).

getAttributeNames

public java.util.Enumeration getAttributeNames()

Get an enumeration of the names of the attribute types in this schema.

Returns:

an enumeration of attribute names (all lower-case).

getMatchingRuleNames

public java.util.Enumeration getMatchingRuleNames()

Get an enumeration of the names of the matching rules in this schema.

Returns:

an enumeration of matching rule names (all lower-case).

fetchSchema

public void fetchSchema(LDAPConnection ld,
                        java.lang.String dn)
                 throws LDAPException

Retrieve the schema for a specific entry.

Parameters:

ld - an active connection to a Directory Server

dn - the entry for which to fetch schema

Throws:

LDAPException - on failure.

fetchSchema

public void fetchSchema(LDAPConnection ld)
                 throws LDAPException

Retrieve the entire schema from the root of a Directory Server.

Parameters:

ld - an active connection to a Directory Server

Throws:

LDAPException - on failure.

toString

public java.lang.String toString()

Displays the schema (including the descriptions of its object classes, attribute types, and matching rules) in an easily readable format (not the same as the format expected by an LDAP server).

Overrides:

toString in class java.lang.Object

Returns:

a string containing the schema in printable format.

main

public static void main(java.lang.String[] args)

Fetch the schema from the LDAP server at the specified host and port, and print out the schema (including descriptions of its object classes, attribute types, and matching rules). The schema is printed in an easily readable format (not the same as the format expected by an LDAP server). For example, you can enter the following command to print the schema:

 java netscape.ldap.LDAPSchema myhost.mydomain.com 389
 

Parameters:

args - the host name and the port number of the LDAP server (for example, netscape.ldap.LDAPSchema directory.netscape.com 389)