com.novell.ldap.LDAPSchema Maven / Gradle / Ivy
/* **************************************************************************
* $OpenLDAP: pkg/jldap/com/novell/ldap/LDAPSchema.java,v 1.42 2004/08/25 07:39:50 sunilk Exp $
*
* Copyright (C) 1999 - 2002 Novell, Inc. All Rights Reserved.
*
* THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND
* TREATIES. USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT
* TO VERSION 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS
* AVAILABLE AT HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE"
* IN THE TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION
* OF THIS WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP
* PUBLIC LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT
* THE PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
******************************************************************************/
package com.novell.ldap;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import com.novell.ldap.client.Debug;
import com.novell.ldap.client.EnumeratedIterator;
import com.novell.ldap.util.LDAPXMLHandler;
import com.novell.ldap.util.SAXEventMultiplexer;
/**
* Represents a schema entry that controls one or more entries held by a
* Directory Server.
*
* LDAPSchema Contains methods to parse schema attributes into
* individual schema definitions, represented by subclasses of
* {@link LDAPSchemaElement}. Schema may be retrieved from a Directory server
* with the fetchSchema method of LDAPConnection or by creating an LDAPEntry
* containing schema attributes. The following sample code demonstrates how to
* retrieve schema elements from LDAPSchema
*
*
* .
* .
* .
* LDAPSchema schema;
* LDAPSchemaElement element;
*
* // connect to the server
* lc.connect( ldapHost, ldapPort );
* lc.bind( ldapVersion, loginDN, password );
*
* // read the schema from the directory
* schema = lc.fetchSchema( lc.getSchemaDN() );
*
* // retrieve the definition of common name
* element = schema.getAttributeSchema( "cn" );
* System.out.println("The attribute cn has an oid of " + element.getID());
* .
* .
* .
*
*
* Other sample code:
*
* - Adding and deleting Schema.
*
- ExtendSchema.java
*
*
- Modifing an existing schema element
*
- MakeContainer.java
*
*
- Listing schema in a GUI
*
- ListSchema.java
*
- ListAttributeSchema.java
*
- ListObjectClassSchema.java
*
*
*
*
*
* @see LDAPSchemaElement
* @see LDAPConnection#fetchSchema
* @see LDAPConnection#getSchemaDN
*/
public class LDAPSchema extends LDAPEntry{
/** The idTable hash on the oid (or integer ID for DITStructureRule) and
* is used for retrieving enumerations
*/
private HashMap idTable[] = new HashMap[8];
/** The nameTable will hash on the names (if available). To insure
* case-insensibility, the Keys for this table will be a String cast to
* Uppercase.
*/
private HashMap nameTable[] = new HashMap[8];
/**
* The following lists the LDAP names of subschema attributes for
* schema elements (definitions):
*/
/*package*/ static final String[] schemaTypeNames =
{
"attributeTypes",
"objectClasses",
"ldapSyntaxes",
"nameForms",
"dITContentRules",
"dITStructureRules",
"matchingRules",
"matchingRuleUse"
};
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int ATTRIBUTE = 0;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int OBJECT_CLASS = 1;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int SYNTAX = 2;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int NAME_FORM = 3;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int DITCONTENT = 4;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int DITSTRUCTURE = 5;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int MATCHING = 6;
/** An index into the the arrays schemaTypeNames, idTable, and nameTable */
/*package*/
static final int MATCHING_USE = 7;
/**
* This constructor was added to support default Serialization
*
*/
public LDAPSchema()
{
super();
}
/**
* Constructs an LDAPSchema object from attributes of an LDAPEntry.
* The object is empty if the entry parameter contains no schema
* attributes. The recognized schema attributes are the following:
*
* "attributeTypes", "objectClasses", "ldapSyntaxes",
* "nameForms", "dITContentRules", "dITStructureRules",
* "matchingRules","matchingRuleUse"
*
* @param ent An LDAPEntry containing schema information.
*/
public LDAPSchema(LDAPEntry ent){
super(ent.getDN(), ent.getAttributeSet());
//reset all definitions
for (int i=0; i< schemaTypeNames.length; i++) {
idTable[i] = new HashMap();
nameTable[i] = new HashMap();
}
Iterator itr = super.getAttributeSet().iterator();
while(itr.hasNext()) {
LDAPAttribute attr = (LDAPAttribute) itr.next();
String value, attrName = attr.getName();
Enumeration enumString = attr.getStringValues();
if(attrName.equalsIgnoreCase( schemaTypeNames[OBJECT_CLASS] )) {
LDAPObjectClassSchema classSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
try {
classSchema = new LDAPObjectClassSchema( value );
}
catch (Exception e){
if( Debug.LDAP_DEBUG) {
Debug.trace( Debug.all, "fetchSchema could not "+
"parse the schema definition:" + value);
}
continue; //Error parsing: do not add this definition
}
addElement( OBJECT_CLASS, classSchema );
}
}
else if(attrName.equalsIgnoreCase( schemaTypeNames[ATTRIBUTE] )) {
LDAPAttributeSchema attrSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
try {
attrSchema = new LDAPAttributeSchema( value );
}
catch (Exception e){
if( Debug.LDAP_DEBUG) {
Debug.trace( Debug.all, "fetchSchema could not "+
"parse the schema definition:" + value);
}
continue; //Error parsing: do not add this definition
}
addElement( ATTRIBUTE, attrSchema );
}
}
else if(attrName.equalsIgnoreCase( schemaTypeNames[SYNTAX] )) {
LDAPSyntaxSchema syntaxSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
syntaxSchema = new LDAPSyntaxSchema( value );
addElement( SYNTAX, syntaxSchema );
}
}
else if(attrName.equalsIgnoreCase( schemaTypeNames[MATCHING] )) {
LDAPMatchingRuleSchema matchingRuleSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
matchingRuleSchema =
new LDAPMatchingRuleSchema( value, null );
addElement( MATCHING, matchingRuleSchema );
}
}
else if(attrName.equalsIgnoreCase( schemaTypeNames[MATCHING_USE])) {
LDAPMatchingRuleUseSchema matchingRuleUseSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
matchingRuleUseSchema =
new LDAPMatchingRuleUseSchema( value );
addElement( MATCHING_USE, matchingRuleUseSchema );
}
}
else if(attrName.equalsIgnoreCase( schemaTypeNames[DITCONTENT] )) {
LDAPDITContentRuleSchema dITContentRuleSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
dITContentRuleSchema =
new LDAPDITContentRuleSchema( value );
addElement( DITCONTENT, dITContentRuleSchema );
}
}
else if(attrName.equalsIgnoreCase( schemaTypeNames[DITSTRUCTURE])) {
LDAPDITStructureRuleSchema dITStructureRuleSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
dITStructureRuleSchema =
new LDAPDITStructureRuleSchema( value );
addElement( DITSTRUCTURE, dITStructureRuleSchema );
}
}
else if(attrName.equalsIgnoreCase(schemaTypeNames[NAME_FORM])) {
LDAPNameFormSchema nameFormSchema;
while(enumString.hasMoreElements()) {
value = (String) enumString.nextElement();
nameFormSchema = new LDAPNameFormSchema( value );
addElement( NAME_FORM, nameFormSchema );
}
}
//All non schema attributes are ignored.
continue;
}
return;
}
/**
* Adds the schema definition to the idList and nameList HashMaps.
* This method is used by the methods fetchSchema and add.
*
* Note that the nameTable has all keys cast to Upper-case. This is so we
* can have a case-insensitive HashMap. The getXXX (String key) methods
* will also cast to uppercase.
*
* @param schemaType Type of schema definition, use one of the final
* integers defined at the top of this class:
* ATTRIBUTE, OBJECT_CLASS, SYNTAX, NAME_FORM,
* DITCONTENT, DITSTRUCTURE, MATCHING, MATCHING_USE
*
* @param element Schema element definition.
*/
private void addElement ( int schemaType, LDAPSchemaElement element)
{
idTable[schemaType].put( element.getID(), element );
String names[] = element.getNames();
for (int i=0; i< names.length; i++) {
nameTable[schemaType].put( names[i].toUpperCase(), element );
}
return;
}
// #######################################################################
// The following methods retrieve a SchemaElement given a Key name:
// #######################################################################
/**
* This function abstracts retrieving LDAPSchemaElements from the local
* copy of schema in this LDAPSchema class. This is used by
* getXXX(String name) functions.
*
* Note that the nameTable has all keys cast to Upper-case. This is so
* we can have a case-insensitive HashMap. The getXXX (String key)
* methods will also cast to uppercase.
*
* The first character of a NAME string can only be an alpha character
* (see section 4.1 of rfc2252) Thus if the first character is a digit we
* can conclude it is an OID. Note that this digit is ASCII only.
*
* @param schemaType Specifies which list is to be used in schema
* lookup.
* @param key The key can be either an OID or a name string.
*/
private LDAPSchemaElement getSchemaElement( int schemaType, String key )
{
if( key == null || key.equalsIgnoreCase(""))
return null;
char c = key.charAt(0);
if( c >= '0' && c <= '9' ) {
//oid lookup
return (LDAPSchemaElement) idTable[schemaType].get( key );
} else {
//name lookup
return (LDAPSchemaElement)
nameTable[schemaType].get( key.toUpperCase() );
}
}
/**
* Returns a particular attribute definition, or null if not found.
*
* @param name Name or OID of the attribute for which a definition is
* to be returned.
*
* @return The attribute definition, or null if not found.
*/
public LDAPAttributeSchema getAttributeSchema( String name )
{
return (LDAPAttributeSchema) getSchemaElement( ATTRIBUTE, name);
}
/**
* Returns a particular DIT content rule definition, or null if not found.
*
* @param name The name of the DIT content rule use for which a
* definition is to be returned.
*
* @return The DIT content rule definition, or null if not found.
*/
public LDAPDITContentRuleSchema getDITContentRuleSchema( String name )
{
return (LDAPDITContentRuleSchema) getSchemaElement( DITCONTENT, name);
}
/**
* Returns a particular DIT structure rule definition, or null if not found.
*
* @param name The name of the DIT structure rule use for which a
* definition is to be returned.
*
* @return The DIT structure rule definition, or null if not found.
*/
public LDAPDITStructureRuleSchema getDITStructureRuleSchema( String name )
{
return (LDAPDITStructureRuleSchema)getSchemaElement(DITSTRUCTURE, name);
}
/**
* Returns a particular DIT structure rule definition, or null if not found.
*
* @param ID The ID of the DIT structure rule use for which a
* definition is to be returned.
*
* @return The DIT structure rule definition, or null if not found.
*/
public LDAPDITStructureRuleSchema getDITStructureRuleSchema( int ID )
{
Integer IDKey = new Integer(ID);
return (LDAPDITStructureRuleSchema) idTable[DITSTRUCTURE].get(IDKey);
}
/**
* Returns a particular matching rule definition, or null if not found.
*
* @param name The name of the matching rule for which a definition
* is to be returned.
*
* @return The matching rule definition, or null if not found.
*/
public LDAPMatchingRuleSchema getMatchingRuleSchema( String name )
{
return (LDAPMatchingRuleSchema) getSchemaElement( MATCHING, name);
}
/**
* Returns a particular matching rule use definition, or null if not found.
*
* @param name The name of the matching rule use for which a definition
* is to be returned.
*
* @return The matching rule use definition, or null if not found.
*/
public LDAPMatchingRuleUseSchema getMatchingRuleUseSchema( String name )
{
return (LDAPMatchingRuleUseSchema)getSchemaElement(MATCHING_USE, name);
}
/**
* Returns a particular name form definition, or null if not found.
*
* @param name The name of the name form for which a definition
* is to be returned.
*
* @return The name form definition, or null if not found.
*/
public LDAPNameFormSchema getNameFormSchema( String name )
{
return (LDAPNameFormSchema) getSchemaElement( NAME_FORM, name);
}
/**
* Returns a particular object class definition, or null if not found.
*
* @param name The name or OID of the object class for which a
* definition is to be returned.
*
* @return The object class definition, or null if not found.
*/
public LDAPObjectClassSchema getObjectClassSchema( String name )
{
return (LDAPObjectClassSchema) getSchemaElement( OBJECT_CLASS, name);
}
/**
* Returns a particular syntax definition, or null if not found.
*
* @param oid The oid of the syntax for which a definition
* is to be returned.
*
* @return The syntax definition, or null if not found.
*/
public LDAPSyntaxSchema getSyntaxSchema( String oid )
{
return (LDAPSyntaxSchema) getSchemaElement( SYNTAX, oid);
}
// ########################################################################
// The following methods return an Enumeration of SchemaElements by schema type
// ########################################################################
/**
* Returns an enumeration of attribute definitions.
*
* @return An enumeration of attribute definitions.
*/
public Enumeration getAttributeSchemas()
{
return new EnumeratedIterator (
idTable[ATTRIBUTE].values().iterator());
}
/**
* Returns an enumeration of DIT content rule definitions.
*
* @return An enumeration of DIT content rule definitions.
*/
public Enumeration getDITContentRuleSchemas()
{
return new EnumeratedIterator (
idTable[DITCONTENT].values().iterator() );
}
/**
* Returns an enumeration of DIT structure rule definitions.
*
* @return An enumeration of DIT structure rule definitions.
*/
public Enumeration getDITStructureRuleSchemas()
{
return new EnumeratedIterator (
idTable[DITSTRUCTURE].values().iterator() );
}
/**
* Returns an enumeration of matching rule definitions.
*
* @return An enumeration of matching rule definitions.
*/
public Enumeration getMatchingRuleSchemas()
{
return new EnumeratedIterator (
idTable[MATCHING].values().iterator() );
}
/**
* Returns an enumeration of matching rule use definitions.
*
* @return An enumeration of matching rule use definitions.
*/
public Enumeration getMatchingRuleUseSchemas()
{
return new EnumeratedIterator (
idTable[MATCHING_USE].values().iterator() );
}
/**
* Returns an enumeration of name form definitions.
*
* @return An enumeration of name form definitions.
*/
public Enumeration getNameFormSchemas()
{
return new EnumeratedIterator (
idTable[NAME_FORM].values().iterator() );
}
/**
* Returns an enumeration of object class definitions.
*
* @return An enumeration of object class definitions.
*/
public Enumeration getObjectClassSchemas()
{
return new EnumeratedIterator (
idTable[OBJECT_CLASS].values().iterator() );
}
/**
* Returns an enumeration of syntax definitions.
*
* @return An enumeration of syntax definitions.
*/
public Enumeration getSyntaxSchemas()
{
return new EnumeratedIterator (
idTable[SYNTAX].values().iterator() );
}
// #######################################################################
// The following methods retrieve an Enumeration of Names of a schema type
// #######################################################################
/**
* Returns an enumeration of attribute names.
*
* @return An enumeration of attribute names.
*/
public Enumeration getAttributeNames()
{
return new EnumeratedIterator (
nameTable[ATTRIBUTE].keySet().iterator() );
}
/**
* Returns an enumeration of DIT content rule names.
*
* @return An enumeration of DIT content rule names.
*/
public Enumeration getDITContentRuleNames()
{
return new EnumeratedIterator (
nameTable[DITCONTENT].keySet().iterator() );
}
/**
* Returns an enumeration of DIT structure rule names.
*
* @return An enumeration of DIT structure rule names.
*/
public Enumeration getDITStructureRuleNames()
{
return new EnumeratedIterator (
nameTable[DITSTRUCTURE].keySet().iterator() );
}
/**
* Returns an enumeration of matching rule names.
*
* @return An enumeration of matching rule names.
*/
public Enumeration getMatchingRuleNames()
{
return new EnumeratedIterator (
nameTable[MATCHING].keySet().iterator() );
}
/**
* Returns an enumeration of matching rule use names.
*
* @return An enumeration of matching rule use names.
*/
public Enumeration getMatchingRuleUseNames()
{
return new EnumeratedIterator (
nameTable[MATCHING_USE].keySet().iterator() );
}
/**
* Returns an enumeration of name form names.
*
* @return An enumeration of name form names.
*/
public Enumeration getNameFormNames()
{
return new EnumeratedIterator (
nameTable[NAME_FORM].keySet().iterator() );
}
/**
* Returns an enumeration of object class names.
*
* @return An enumeration of object class names.
*/
public Enumeration getObjectClassNames()
{
return new EnumeratedIterator (
nameTable[OBJECT_CLASS].keySet().iterator() );
}
/**
* This helper function returns a number that represents the type of schema
* definition the element represents. The top of this file enumerates
* these types.
*
* @param element A class extending LDAPSchemaElement.
*
* @return a Number that identifies the type of schema element and
* will be one of the following:
* ATTRIBUTE, OBJECT_CLASS, SYNTAX, NAME_FORM,
* DITCONTENT, DITSTRUCTURE, MATCHING, MATCHING_USE
*/
private int getType( LDAPSchemaElement element )
{
if( element instanceof LDAPAttributeSchema)
return this.ATTRIBUTE;
else if( element instanceof LDAPObjectClassSchema)
return this.OBJECT_CLASS;
else if( element instanceof LDAPSyntaxSchema)
return this.SYNTAX;
else if( element instanceof LDAPNameFormSchema)
return this.NAME_FORM;
else if( element instanceof LDAPMatchingRuleSchema)
return this.MATCHING;
else if( element instanceof LDAPMatchingRuleUseSchema)
return this.MATCHING_USE;
else if( element instanceof LDAPDITContentRuleSchema)
return this.DITCONTENT;
else if( element instanceof LDAPDITStructureRuleSchema)
return this.DITSTRUCTURE;
else
throw new IllegalArgumentException(
"The specified schema element type is not recognized");
}
/**
* This method is used to deserialize the DSML encoded representation of
* this class.
* @param input InputStream for the DSML formatted data.
* @return Deserialized form of this class.
* @throws IOException when serialization fails.
*/
public static Object readDSML(InputStream input)throws IOException
{
SAXEventMultiplexer xmlreader = new SAXEventMultiplexer();
xmlreader.setLDAPXMLHandler(getXMLHandler("LDAPEntry",null));
return (LDAPSchema) xmlreader.parseXML(input);
}
/**
* This method return the LDAPHandler which handles the XML (DSML) tags
* for this class
* @param tagname Name of the Root tag used to represent this class.
* @param parenthandler Parent LDAPXMLHandler for this tag.
* @return LDAPXMLHandler to handle this element.
*/
static LDAPXMLHandler getXMLHandler(String tagname,LDAPXMLHandler parenthandler) {
return new LDAPXMLHandler(tagname, parenthandler) {
String dn;
List valuelist = new ArrayList();
protected void initHandler() {
//set LDAPAttribute handler.
setchildelement(LDAPAttribute.getXMLHandler("attr",this));
}
protected void endElement() {
LDAPAttributeSet attrset = new LDAPAttributeSet();
attrset.addAll(valuelist);
LDAPEntry entry = new LDAPEntry(dn,attrset);
LDAPSchema sch = new LDAPSchema(entry);
setObject(sch);
}
protected void addValue(String tag, Object value) {
if (tag.equals("attr")) {
valuelist.add(value);
}
}
protected void handleAttributes(Attributes attributes)throws SAXException {
dn = attributes.getValue("dn");
if (dn== null)
throw new SAXException("invalid entry Tag, dn is mandatory element: ");
}
};
}
}
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