pjs/directory/java-sdk/ietfldap/org/ietf/ldap/LDAPAttributeSchema.java

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/* -*- 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) 1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
package org.ietf.ldap;
import java.util.*;
/**
* The definition of an attribute type in the schema.
* <A HREF="http://www.ietf.org/rfc/rfc2252.txt"
* TARGET="_blank">RFC 2252, Lightweight Directory Access Protocol (v3):
* Attribute Syntax Definitions</A> 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:
* <P>
*
* <UL>
* <LI>an OID identifying the attribute type
* <LI>a name identifying the attribute type
* <LI>a description of the attribute type
* <LI>the name of the parent attribute type
* <LI>the syntax used by the attribute (for example,
* <CODE>cis</CODE> or <CODE>int</CODE>)
* <LI>an indication of whether the attribute type is single-valued
* or multi-valued
* </UL>
* <P>
*
* When you construct an <CODE>LDAPAttributeSchema</CODE> 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.
* <P>
*
* 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:
* <P>
*
* <UL>
* <LI>EQUALITY
* <LI>ORDERING
* <LI>SUBSTR
* <LI>COLLECTIVE
* <LI>NO-USER-MODIFICATION
* <LI>USAGE
* <LI>OBSOLETE
* </UL>
* <P>
*
* To get the name, OID, and description of this attribute type
* definition, use the <CODE>getName</CODE>, <CODE>getOID</CODE>, and
* <CODE>getDescription</CODE> methods inherited from the abstract class
* <CODE>LDAPSchemaElement</CODE>. Optional and custom qualifiers are
* accessed with <CODE>getQualifier</CODE> and <CODE>getQualifierNames</CODE>
* from <CODE>LDAPSchemaElement</CODE>.
* <P>
*
* To add or remove this attribute type 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 AttributeTypeDescription as follows:
* <P>
* <PRE>
* 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
* </PRE>
*
* @version 1.0
* @see org.ietf.ldap.LDAPSchemaElement
**/
public class LDAPAttributeSchema extends LDAPSchemaElement {
static final long serialVersionUID = 2482595821879862595L;
/**
* Constructs a blank element.
*/
protected LDAPAttributeSchema() {
super();
}
/**
* Constructs an attribute type definition, using the specified
* information
* @param names names of the attribute type
* @param oid object identifier (OID) of the attribute type
* in dotted-string format (for example, "1.2.3.4")
* @param description description of attribute type
* @param syntaxString syntax of this attribute type in dotted-string
* format (for example, "1.2.3.4.5")
* @param single <CODE>true</CODE> if the attribute type is single-valued
* @param superior superior attribute as a name or OID; <CODE>null</CODE>
* if there is no superior
* @param obsolete true if this attribute is obsolete
* @param equality Object Identifier of the equality matching rule
* for the attribute in dotted-decimal format; MAY be null
* @param ordering Object Identifier of the ordering matching rule
* for the attribute in dotted-decimal format; MAY be null
* @param substring Object Identifier of the substring matching rule
* for the attribute in dotted-decimal format; MAY be null
* @param collective true if this is a collective attribute.
* @param userMod true if the attribute is modifiable by users.
* @param usage One of the following:
* <UL>
* <LI>USER_APPLICATIONS
* <LI>DIRECTORY_OPERATION
* <LI>DISTRIBUTED_OPERATION
* <LI>DSA_OPERATION
* </UL>
*/
public LDAPAttributeSchema( String[] names,
String oid,
String description,
String syntaxString,
boolean single,
String superior,
boolean obsolete,
String equality,
String ordering,
String substring,
String collective,
boolean userMod,
int usage ) {
super( names, oid, description );
attrName = "attributetypes";
syntaxElement.syntax = syntaxElement.syntaxCheck( syntaxString );
syntaxElement.syntaxString = syntaxString;
setQualifier( SYNTAX, syntaxElement.syntaxString );
if ( single ) {
setQualifier( SINGLE, "" );
}
if ( (superior != null) && (superior.length() > 0) ) {
setQualifier( SUPERIOR, superior );
}
if ( obsolete ) {
setQualifier( OBSOLETE, "" );
}
if ( (equality != null) && (equality.length() > 0) ) {
setQualifier( EQUALITY, equality );
}
if ( (ordering != null) && (ordering.length() > 0) ) {
setQualifier( ORDERING, ordering );
}
if ( (substring != null) && (substring.length() > 0) ) {
setQualifier( SUBSTR, substring );
}
if ( (collective != null) && (collective.length() > 0) ) {
setQualifier( COLLECTIVE, collective );
}
if ( !userMod ) {
setQualifier( NO_USER_MODIFICATION, "" );
}
setQualifier( USAGE, String.valueOf( usage ) );
}
/**
* Constructs an attribute type definition based on a description in
* the AttributeTypeDescription format. For information on this format,
* (see <A HREF="http://www.ietf.org/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 the attributes "objectclasses" and "attributetypes". The
* values of "attributetypes" are attribute type descriptions
* in this format.)
* <P>
*
* @param raw definition of the attribute type in the
* AttributeTypeDescription format
*/
public LDAPAttributeSchema( String raw ) {
attrName = "attributetypes";
parseValue( raw );
String val = (String)properties.get( SYNTAX );
if ( val != null ) {
syntaxElement.syntaxString = val;
syntaxElement.syntax = syntaxElement.syntaxCheck( val );
}
}
/**
* Returns the value of a property of the object or null if there is none
*
* @param key the name of the property
* @return the value of a property of the object or null if there is none
*/
private String getStringProperty( String key ) {
String[] val = getQualifier( key );
return ((val != null) && (val.length > 0)) ? val[0] : null;
}
/**
* Returns the Object Identifier of the equality matching rule in effect
* for this attribute, or null if there is none
* @return the Object Identifier of the equality matching rule in effect
* for this attribute, or null if there is none
*/
public String getEqualityMatchingRule() {
return getStringProperty( EQUALITY );
}
/**
* Returns the Object Identifier of the order matching rule in effect
* for this attribute, or null if there is none
* @return the Object Identifier of the order matching rule in effect
* for this attribute, or null if there is none
*/
public String getOrderMatchingRule() {
return getStringProperty( ORDERING );
}
/**
* Returns the Object Identifier of the substring matching rule in effect
* for this attribute, or null if there is none
* @return the Object Identifier of the substring matching rule in effect
* for this attribute, or null if there is none
*/
public String getSubstringMatchingRule() {
return getStringProperty( SUBSTR );
}
/**
* Gets the name of the attribute that this attribute inherits from,
* if any.
* @return the name of the attribute from which this attribute
* inherits, or <CODE>null</CODE> if it does not have a superior.
*/
public String getSuperior() {
return getStringProperty( SUPERIOR );
}
/**
* Gets the syntax of the schema element
* @return one of the following values:
* <UL>
* <LI><CODE>cis</CODE> (case-insensitive string)
* <LI><CODE>ces</CODE> (case-exact string)
* <LI><CODE>binary</CODE> (binary data)
* <LI><CODE>int</CODE> (integer)
* <LI><CODE>telephone</CODE> (telephone number -- identical to cis,
* but blanks and dashes are ignored during comparisons)
* <LI><CODE>dn</CODE> (distinguished name)
* <LI><CODE>unknown</CODE> (not a known syntax)
* </UL>
* @deprecated use getSyntaxString instead
*/
public int getSyntax() {
return syntaxElement.syntax;
}
/**
* Gets the usage property of the object
*
* @return the usage property of the object; one of the following:
* <UL>
* <LI>USER_APPLICATIONS
* <LI>DIRECTORY_OPERATION
* <LI>DISTRIBUTED_OPERATION
* <LI>DSA_OPERATION
* </UL>
*/
public int getUsage() {
int usage;
try {
usage = Integer.parseInt( getStringProperty( USAGE ) );
} catch ( Exception e ) {
usage = USER_APPLICATIONS;
}
return usage;
}
/**
* Gets the syntax of the attribute type in dotted-decimal format,
* for example "1.2.3.4.5"
* @return The attribute syntax in dotted-decimal format.
*/
public String getSyntaxString() {
return syntaxElement.syntaxString;
}
/**
* Prepares a value in RFC 2252 format for submission to a server
*
* @param quotingBug <CODE>true</CODE> if SUP and SYNTAX values are to
* be quoted. This is required to work with bugs in certain LDAP servers.
* @return a String ready for submission to an LDAP server.
*/
String getValue( boolean quotingBug ) {
String s = getValuePrefix();
String val = getValue( SUPERIOR, false );
if ( val.length() > 0 ) {
s += val + ' ';
}
val = getOptionalValues( MATCHING_RULES );
if ( val.length() > 0 ) {
s += val + ' ';
}
val = getValue( SYNTAX, quotingBug );
if ( val.length() > 0 ) {
s += val + ' ';
}
if ( isSingleValued() ) {
s += SINGLE + ' ';
}
val = getOptionalValues( NOVALS );
if ( val.length() > 0 ) {
s += val + ' ';
}
val = getOptionalValues( new String[] {USAGE} );
if ( val.length() > 0 ) {
s += val + ' ';
}
val = getCustomValues();
if ( val.length() > 0 ) {
s += val + ' ';
}
s += ')';
return s;
}
/**
* Determines if the attribute type is collective
*
* @return <code>true</code> if collective
*/
public boolean isCollective() {
return (properties != null) ? properties.containsKey( COLLECTIVE ) :
false;
}
/**
* Determines if the attribute type is single-valued
*
* @return <code>true</code> if single-valued,
* <code>false</code> if multi-valued.
*/
public boolean isSingleValued() {
return (properties != null) ? properties.containsKey( SINGLE ) :
false;
}
/**
* Determines if the attribute type is modifiable by users
*
* @return <code>true</code> if modifiable by users
*/
public boolean isUserModifiable() {
return (properties != null) ?
!properties.containsKey( NO_USER_MODIFICATION ) :
true;
}
/**
* Gets the definition of the attribute type in Directory format
*
* @return definition of the attribute type in Directory format
*/
public String toString() {
return getValue( false );
}
/**
* Gets the attribute name for a schema element
*
* @return The attribute name of the element
*/
String getAttributeName() {
return "attributetypes";
}
// Predefined qualifiers
public static final String EQUALITY = "EQUALITY";
public static final String ORDERING = "ORDERING";
public static final String SUBSTR = "SUBSTR";
public static final String SINGLE = "SINGLE-VALUE";
public static final String COLLECTIVE = "COLLECTIVE";
public static final String NO_USER_MODIFICATION = "NO-USER-MODIFICATION";
public static final String USAGE = "USAGE";
// Usage constants
/** An ordinary user attribute
*/
public static final int USER_APPLICATIONS = 0;
/** An operational attribute used for a directory operation or which
* holds a directory specific value
*/
public static final int DIRECTORY_OPERATION = 1;
/** An operational attribute used to hold server (DSA) information that
* is shared among servers holding replicas of the entry
*/
public static final int DISTRIBUTED_OPERATION = 2;
/** An operational attribute used to hold server (DSA) information that
* is local to a server
*/
public static final int DSA_OPERATION = 3;
// Qualifiers known to not have values; prepare a Hashtable
static String[] NOVALS = { SINGLE,
COLLECTIVE,
NO_USER_MODIFICATION };
static {
for( int i = 0; i < NOVALS.length; i++ ) {
novalsTable.put( NOVALS[i], NOVALS[i] );
}
}
static final String[] MATCHING_RULES = { EQUALITY,
ORDERING,
SUBSTR };
// Qualifiers which we output explicitly in toString()
static final String[] IGNOREVALS = { SINGLE,
OBSOLETE,
SUPERIOR,
SINGLE,
COLLECTIVE,
NO_USER_MODIFICATION,
SYNTAX};
protected LDAPSyntaxSchemaElement syntaxElement =
new LDAPSyntaxSchemaElement();
}