gecko-dev/directory/java-sdk/ldapjdk/netscape/ldap/LDAPMatchingRuleUseSchema.java

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Java

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
package netscape.ldap;
import java.util.*;
/**
* The definition of a matching rule use in the schema.
* <A HREF="http://ds.internic.net/rfc/rfc2252.txt"
* TARGET="_blank">RFC 2252, Lightweight Directory Access Protocol (v3):
* Attribute Syntax Definitions</A> covers the types of information
* that need to be specified in the definition of a matching rule use.
* According to the RFC, the description of a matching rule use can
* include the following information:
* <P>
*
* <UL>
* <LI>an OID identifying the matching rule
* <LI>a name identifying the matching rule use
* <LI>a description of the matching rule use
* <LI>a list of attributes the matching rule applies to
* </UL>
* <P>
*
* When you construct an <CODE>LDAPMatchingRuleUseSchema</CODE> object, you can
* specify these types of information as arguments to the constructor or
* in the MatchingRuleUseDescription 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 values in this
* format.
* <P>
*
* You can get the name, OID, and description of this matching rule use
* definition by using the <CODE>getName</CODE>, <CODE>getOID</CODE>, and
* <CODE>getDescription</CODE> methods inherited from the abstract class
* <CODE>LDAPSchemaElement</CODE>. Custom qualifiers are
* accessed with <CODE>getQualifier</CODE> and <CODE>getQualifierNames</CODE>
* from <CODE>LDAPSchemaElement</CODE>.
* <P>
*
* To add or remove this matching rule definition from the
* schema, use the <CODE>add</CODE> and <CODE>remove</CODE>
* methods, which this class inherits from the <CODE>LDAPSchemaElement</CODE>
* abstract class.
* <P>
* RFC 2252 defines MatchingRuleUseDescription follows:
* <P>
* <PRE>
* Values of the matchingRuleUse list the attributes which are suitable
* for use with an extensible matching rule.
*
* MatchingRuleUseDescription = "(" whsp
* numericoid whsp ; MatchingRule identifier
* [ "NAME" qdescrs ]
* [ "DESC" qdstring ]
* [ "OBSOLETE" ]
* "APPLIES" oids ; AttributeType identifiers
* whsp ")"
* </PRE>
* <P>
*
* @version 1.0
* @see netscape.ldap.LDAPSchemaElement
* @see netscape.ldap.LDAPMatchingRuleSchema
**/
public class LDAPMatchingRuleUseSchema extends LDAPAttributeSchema {
/**
* Constructs a matching rule use definition, using the specified
* information.
* @param name name of the matching rule
* @param oid object identifier (OID) of the matching rule
* in dotted-decimal format (for example, "1.2.3.4")
* @param description description of the matching rule
* @param attributes array of the OIDs of the attributes for which
* the matching rule is applicable
*/
public LDAPMatchingRuleUseSchema( String name, String oid,
String description,
String[] attributes ) {
if ( (oid == null) || (oid.trim().length() < 1) ) {
throw new IllegalArgumentException( "OID required" );
}
this.name = name;
this.oid = oid;
this.description = description;
attrName = "matchingruleuse";
this.attributes = new String[attributes.length];
for( int i = 0; i < attributes.length; i++ ) {
this.attributes[i] = attributes[i];
}
}
/**
* Constructs a matching rule use definition based on descriptions in
* the MatchingRuleUseDescription format. For information on this format,
* (see <A HREF="http://ds.internic.net/rfc/rfc2252.txt"
* TARGET="_blank">RFC 2252, Lightweight Directory Access Protocol (v3):
* Attribute Syntax Definitions</A>. 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 attributes that include "matchingrule" and "matchingruleuse".
* The values of these attributes are matching rule descriptions
* in this format.
* <P>
*
* @param use definition of the use of the matching rule in the
* MatchingRuleUseDescription format
*/
public LDAPMatchingRuleUseSchema( String use ) {
attrName = "matchingruleuse";
parseValue( use );
Vector v = (Vector)properties.get( "APPLIES" );
if ( v != null ) {
attributes = new String[v.size()];
v.copyInto( attributes );
v.removeAllElements();
}
}
/**
* Gets the list of the OIDs of the attribute types which can be used
* with the matching rule.
* @return array of the OIDs of the attribute types which can be used
* with the matching rule.
*/
public String[] getApplicableAttributes() {
return attributes;
}
/**
* Gets the matching rule use definition in the string representation
* of the MatchingRuleUseDescription data type defined in X.501 (see
* <A HREF="http://ds.internic.net/rfc/rfc2252.txt"
* TARGET="_blank">RFC 2252, Lightweight Directory Access Protocol
* (v3): Attribute Syntax Definitions</A>
* for a description of these formats).
* 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 "matchingrules" and "matchingruleuse". The
* values of these attributes are matching rule description and
* matching rule use description in these formats.)
* <P>
*
* @return a string in a format that can be used as the value of
* the <CODE>matchingruleuse</CODE> attribute (which describes the use of
* a matching rule in the schema) of a <CODE>subschema</CODE> object
*/
public String getValue() {
String s = getValuePrefix();
if ( (attributes != null) && (attributes.length > 0) ) {
s += "APPLIES ( ";
for( int i = 0; i < attributes.length; i++ ) {
if ( i > 0 )
s += " $ ";
s += attributes[i];
}
s += " ) ";
}
s += ')';
return s;
}
/**
* Gets the definition of the matching rule use in a user friendly format.
* This is the format that the matching rule use definition uses when
* you print the matching rule or the schema.
* @return definition of the matching rule in a user friendly format.
*/
public String toString() {
String s = "Name: " + name + "; OID: " + oid;
s += "; Description: " + description;
if ( attributes != null ) {
s += "; Applies to: ";
for( int i = 0; i < attributes.length; i++ ) {
if ( i > 0 )
s += ", ";
s += attributes[i];
}
}
s += getQualifierString( EXPLICIT );
return s;
}
// Qualifiers tracked explicitly
static final String[] EXPLICIT = { OBSOLETE };
private String[] attributes = null;
}