javax.naming.ldap
Class LdapName

java.lang.Object   
  javax.naming.ldap.LdapName

All Implemented Interfaces:

Serializable , Cloneable , Comparable <Object >, Name

public class LdapName
extends Object   
implements Name   

This class represents a distinguished name as specified by RFC 2253. A distinguished name, or DN, is composed of an ordered list of components called relative distinguished names, or RDNs. Details of a DN's syntax are described in RFC 2253.

This class resolves a few ambiguities found in RFC 2253 as follows:

• RFC 2253 leaves the term "whitespace" undefined. The ASCII space character 0x20 (" ") is used in its place.
• Whitespace is allowed on either side of ',', ';', '=', and '+'. Such whitespace is accepted but not generated by this code, and is ignored when comparing names.
• AttributeValue strings containing '=' or non-leading '#' characters (unescaped) are accepted.

String names passed to LdapName or returned by it use the full Unicode character set. They may also contain characters encoded into UTF-8 with each octet represented by a three-character substring such as "\\B4". They may not, however, contain characters encoded into UTF-8 with each octet represented by a single character in the string: the meaning would be ambiguous.

LdapName will properly parse all valid names, but does not attempt to detect all possible violations when parsing invalid names. It is "generous" in accepting invalid names. The "validity" of a name is determined ultimately when it is supplied to an LDAP server, which may accept or reject the name based on factors such as its schema information and interoperability considerations.

When names are tested for equality, attribute types, both binary and string values, are case-insensitive. String values with different but equivalent usage of quoting, escaping, or UTF8-hex-encoding are considered equal. The order of components in multi-valued RDNs (such as "ou=Sales+cn=Bob") is not significant.

The components of a LDAP name, that is, RDNs, are numbered. The indexes of a LDAP name with n RDNs range from 0 to n-1. This range may be written as [0,n). The right most RDN is at index 0, and the left most RDN is at index n-1. For example, the distinguished name: "CN=Steve Kille, O=Isode Limited, C=GB" is numbered in the following sequence ranging from 0 to 2: {C=GB, O=Isode Limited, CN=Steve Kille}. An empty LDAP name is represented by an empty RDN list.

Concurrent multithreaded read-only access of an instance of LdapName need not be synchronized.

Unless otherwise noted, the behavior of passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown.

Since:

1.5

See Also:

Serialized Form

Constructor Summary

LdapName (List <Rdn > rdns)
Constructs an LDAP name given its parsed RDN components.

LdapName (String name)
Constructs an LDAP name from the given distinguished name.

Method Summary

Name	add (int posn, Rdn comp) Adds a single RDN at a specified position within this LDAP name.
Name	add (int posn, String comp) Adds a single component at a specified position within this LDAP name.
Name	add (Rdn comp) Adds a single RDN to the end of this LDAP name.
Name	add (String comp) Adds a single component to the end of this LDAP name.
Name	addAll (int posn, List <Rdn > suffixRdns) Adds the RDNs of a name -- in order -- at a specified position within this name.
Name	addAll (int posn, Name suffix) Adds the components of a name -- in order -- at a specified position within this name.
Name	addAll (List <Rdn > suffixRdns) Adds the RDNs of a name -- in order -- to the end of this name.
Name	addAll (Name suffix) Adds the components of a name -- in order -- to the end of this name.
Object	clone () Generates a new copy of this name.
int	compareTo (Object obj) Compares this LdapName with the specified Object for order.
boolean	endsWith (List <Rdn > rdns) Determines whether the specified RDN sequence forms a suffix of this LDAP name.
boolean	endsWith (Name n) Determines whether this LDAP name ends with a specified LDAP name suffix.
boolean	equals (Object obj) Determines whether two LDAP names are equal.
String	get (int posn) Retrieves a component of this LDAP name as a string.
Enumeration <String >	getAll () Retrieves the components of this name as an enumeration of strings.
Name	getPrefix (int posn) Creates a name whose components consist of a prefix of the components of this LDAP name.
Rdn	getRdn (int posn) Retrieves an RDN of this LDAP name as an Rdn.
List <Rdn >	getRdns () Retrieves the list of relative distinguished names.
Name	getSuffix (int posn) Creates a name whose components consist of a suffix of the components in this LDAP name.
int	hashCode () Computes the hash code of this LDAP name.
boolean	isEmpty () Determines whether this LDAP name is empty.
Object	remove (int posn) Removes a component from this LDAP name.
int	size () Retrieves the number of components in this LDAP name.
boolean	startsWith (List <Rdn > rdns) Determines whether the specified RDN sequence forms a prefix of this LDAP name.
boolean	startsWith (Name n) Determines whether this LDAP name starts with a specified LDAP name prefix.
String	toString () Returns a string representation of this LDAP name in a format defined by RFC 2253 and described in the class description.

Methods inherited from class java.lang.Object

finalize , getClass , notify , notifyAll , wait , wait , wait

Constructor Detail

LdapName

public LdapName(String    name)
         throws InvalidNameException   

Constructs an LDAP name from the given distinguished name.

Parameters:

name - This is a non-null distinguished name formatted according to the rules defined in RFC 2253.

Throws:

InvalidNameException - if a syntax violation is detected.

See Also:

Rdn.escapeValue(Object value)

LdapName

public LdapName(List   <Rdn   > rdns)

Constructs an LDAP name given its parsed RDN components.

The indexing of RDNs in the list follows the numbering of RDNs described in the class description.

Parameters:

rdns - The non-null list of Rdns forming this LDAP name.

Method Detail

size

public int size()

Retrieves the number of components in this LDAP name.

Specified by:

size in interface Name

Returns:

The non-negative number of components in this LDAP name.

isEmpty

public boolean isEmpty()

Determines whether this LDAP name is empty. An empty name is one with zero components.

Specified by:

isEmpty in interface Name

Returns:

true if this LDAP name is empty, false otherwise.

getAll

public Enumeration   <String   > getAll()

Retrieves the components of this name as an enumeration of strings. The effect of updates to this name on this enumeration is undefined. If the name has zero components, an empty (non-null) enumeration is returned. The order of the components returned by the enumeration is same as the order in which the components are numbered as described in the class description.

Specified by:

getAll in interface Name

Returns:

A non-null enumeration of the components of this LDAP name. Each element of the enumeration is of class String.

get

public String    get(int posn)

Retrieves a component of this LDAP name as a string.

Specified by:

get in interface Name

Parameters:

posn - The 0-based index of the component to retrieve. Must be in the range [0,size()).

Returns:

The non-null component at index posn.

Throws:

IndexOutOfBoundsException - if posn is outside the specified range.

getRdn

public Rdn    getRdn(int posn)

Retrieves an RDN of this LDAP name as an Rdn.

Parameters:

posn - The 0-based index of the RDN to retrieve. Must be in the range [0,size()).

Returns:

The non-null RDN at index posn.

Throws:

IndexOutOfBoundsException - if posn is outside the specified range.

getPrefix

public Name    getPrefix(int posn)

Creates a name whose components consist of a prefix of the components of this LDAP name. Subsequent changes to this name will not affect the name that is returned and vice versa.

Specified by:

getPrefix in interface Name

Parameters:

posn - The 0-based index of the component at which to stop. Must be in the range [0,size()].

Returns:

An instance of LdapName consisting of the components at indexes in the range [0,posn). If posn is zero, an empty LDAP name is returned.

Throws:

IndexOutOfBoundsException - If posn is outside the specified range.

getSuffix

public Name    getSuffix(int posn)

Creates a name whose components consist of a suffix of the components in this LDAP name. Subsequent changes to this name do not affect the name that is returned and vice versa.

Specified by:

getSuffix in interface Name

Parameters:

posn - The 0-based index of the component at which to start. Must be in the range [0,size()].

Returns:

An instance of LdapName consisting of the components at indexes in the range [posn,size()). If posn is equal to size(), an empty LDAP name is returned.

Throws:

IndexOutOfBoundsException - If posn is outside the specified range.

startsWith

public boolean startsWith(Name    n)

Determines whether this LDAP name starts with a specified LDAP name prefix. A name n is a prefix if it is equal to getPrefix(n.size())--in other words this LDAP name starts with 'n'. If n is null or not a RFC2253 formatted name as described in the class description, false is returned.

Specified by:

startsWith in interface Name

Parameters:

n - The LDAP name to check.

Returns:

true if n is a prefix of this LDAP name, false otherwise.

See Also:

getPrefix(int posn)

startsWith

public boolean startsWith(List   <Rdn   > rdns)

Determines whether the specified RDN sequence forms a prefix of this LDAP name. Returns true if this LdapName is at least as long as rdns, and for every position p in the range [0, rdns.size()) the component getRdn(p) matches rdns.get(p). Returns false otherwise. If rdns is null, false is returned.

Parameters:

rdns - The sequence of Rdns to check.

Returns:

true if rdns form a prefix of this LDAP name, false otherwise.

endsWith

public boolean endsWith(Name    n)

Determines whether this LDAP name ends with a specified LDAP name suffix. A name n is a suffix if it is equal to getSuffix(size()-n.size())--in other words this LDAP name ends with 'n'. If n is null or not a RFC2253 formatted name as described in the class description, false is returned.

Specified by:

endsWith in interface Name

Parameters:

n - The LDAP name to check.

Returns:

true if n is a suffix of this name, false otherwise.

See Also:

getSuffix(int posn)

endsWith

public boolean endsWith(List   <Rdn   > rdns)

Determines whether the specified RDN sequence forms a suffix of this LDAP name. Returns true if this LdapName is at least as long as rdns, and for every position p in the range [size() - rdns.size(), size()) the component getRdn(p) matches rdns.get(p). Returns false otherwise. If rdns is null, false is returned.

Parameters:

rdns - The sequence of Rdns to check.

Returns:

true if rdns form a suffix of this LDAP name, false otherwise.

addAll

public Name    addAll(Name    suffix)
            throws InvalidNameException   

Adds the components of a name -- in order -- to the end of this name.

Specified by:

addAll in interface Name

Parameters:

suffix - The non-null components to add.

Returns:

The updated name (not a new instance).

Throws:

InvalidNameException - if suffix is not a valid LDAP name, or if the addition of the components would violate the syntax rules of this LDAP name.

addAll

public Name    addAll(List   <Rdn   > suffixRdns)

Adds the RDNs of a name -- in order -- to the end of this name.

Parameters:

suffixRdns - The non-null suffix Rdns to add.

Returns:

The updated name (not a new instance).

addAll

public Name    addAll(int posn,
                   Name    suffix)
            throws InvalidNameException   

Adds the components of a name -- in order -- at a specified position within this name. Components of this LDAP name at or after the index (if any) of the first new component are shifted up (away from index 0) to accomodate the new components.

Specified by:

addAll in interface Name

Parameters:

suffix - The non-null components to add.

posn - The index at which to add the new component. Must be in the range [0,size()].

Returns:

The updated name (not a new instance).

Throws:

InvalidNameException - if suffix is not a valid LDAP name, or if the addition of the components would violate the syntax rules of this LDAP name.

IndexOutOfBoundsException. - If posn is outside the specified range.

addAll

public Name    addAll(int posn,
                   List   <Rdn   > suffixRdns)

Adds the RDNs of a name -- in order -- at a specified position within this name. RDNs of this LDAP name at or after the index (if any) of the first new RDN are shifted up (away from index 0) to accomodate the new RDNs.

Parameters:

suffixRdns - The non-null suffix Rdns to add.

posn - The index at which to add the suffix RDNs. Must be in the range [0,size()].

Returns:

The updated name (not a new instance).

Throws:

IndexOutOfBoundsException. - If posn is outside the specified range.

add

public Name    add(String    comp)
         throws InvalidNameException   

Adds a single component to the end of this LDAP name.

Specified by:

add in interface Name

Parameters:

comp - The non-null component to add.

Returns:

The updated LdapName, not a new instance. Cannot be null.

Throws:

InvalidNameException - If adding comp at end of the name would violate the name's syntax.

add

public Name    add(Rdn    comp)

Adds a single RDN to the end of this LDAP name.

Parameters:

comp - The non-null RDN to add.

Returns:

The updated LdapName, not a new instance. Cannot be null.

add