netscape.ldap
Class LDAPUrl

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

public class LDAPUrl

extends java.lang.Object

Represents an LDAP URL. The complete specification for LDAP URLs is in RFC 1959. LDAP URLs have the following format:

 "ldap://" [ hostName [":" portNumber] ] "//"
                      distinguishedName
          ["?" attributeList ["?" scope
                      "?" filterString ] ]
 

where

• all text within double-quotes are literal

• hostName and portNumber identify the location of the LDAP server.

• distinguishedName is the name of an entry within the given directory (the entry represents the starting point of the search)

• attributeList contains a list of attributes to retrieve (if null, fetch all attributes). This is a comma-delimited list of attribute names.

• scope is one of the following:
  • base indicates that this is a search only for the specified entry
  • one indicates that this is a search for matching entries one level under the specified entry (and not including the entry itself)
  • sub indicates that this is a search for matching entries at all levels under the specified entry (including the entry itself)

  If not specified, scope is base by default.

• filterString is a human-readable representation of the search criteria. This value is used only for one-level or subtree searches.

Note that if scope and filterString are not specified, an LDAP URL identifies exactly one entry in the directory.

The same encoding rules for other URLs (e.g. HTTP) apply for LDAP URLs. Specifically, any "illegal" characters are escaped with %HH, where HH represent the two hex digits which correspond to the ASCII value of the character. This encoding is only legal (or necessary) on the DN and filter portions of the URL.

Field Summary

static java.lang.String

defaultFilter

Constructor Summary

LDAPUrl(java.lang.String url)
Constructs a URL object with the specified string as URL.

LDAPUrl(java.lang.String host, int port, java.lang.String DN)
Constructs with the specified host, port, and DN.

LDAPUrl(java.lang.String host, int port, java.lang.String DN, java.util.Enumeration attributes, int scope, java.lang.String filter)
Constructs a full-blown LDAP URL to specify an LDAP search operation.

LDAPUrl(java.lang.String host, int port, java.lang.String DN, java.lang.String[] attributes, int scope, java.lang.String filter)
Constructs a full-blown LDAP URL to specify an LDAP search operation.

Method Summary

static java.lang.String	decode(java.lang.String URLEncoded) Decodes a URL-encoded string.
static java.lang.String	encode(java.lang.String toEncode) Encodes an arbitrary string.
boolean	equals(LDAPUrl url) Reports if the two objects represent the same URL
java.lang.String[]	getAttributeArray() Return the collection of attributes specified in the URL, or null for "every attribute"
java.util.Enumeration	getAttributes() Return the collection of attributes specified in the URL, or null for "every attribute"
java.lang.String	getDN() Return the distinguished name encapsulated in the URL
java.lang.String	getFilter() Returns the search filter (RFC 1558), or the default if none was specified.
java.lang.String	getHost() Return the host name of the LDAP server
int	getPort() Return the port number for the LDAP server
int	getScope() Returns the scope of the search, according to the values SCOPE_BASE, SCOPE_ONE, SCOPE_SUB as defined in LDAPv2.
java.lang.String	getUrl() Returns a valid string representation of this LDAP URL.
java.lang.String	toString() Returns the URL in String format

Methods inherited from class java.lang.Object

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

Field Detail

defaultFilter

public static java.lang.String defaultFilter

Constructor Detail

LDAPUrl

public LDAPUrl(java.lang.String url)
        throws java.net.MalformedURLException

Constructs a URL object with the specified string as URL.

Parameters:

url - LDAP search expression in URL form

Throws:

java.net.MalformedURLException - failed to parse URL

LDAPUrl

public LDAPUrl(java.lang.String host,
               int port,
               java.lang.String DN)

Constructs with the specified host, port, and DN. This form is used to create URL references to a particular object in the directory.

Parameters:

host - host name of the LDAP server, or null for "nearest X.500/LDAP"

port - port number of the LDAP server (use LDAPv2.DEFAULT_PORT for the default port)

DN - distinguished name of the object

LDAPUrl

public LDAPUrl(java.lang.String host,
               int port,
               java.lang.String DN,
               java.lang.String[] attributes,
               int scope,
               java.lang.String filter)

Constructs a full-blown LDAP URL to specify an LDAP search operation.

Parameters:

host - host name of the LDAP server, or null for "nearest X.500/LDAP"

port - port number of the LDAP server (use LDAPv2.DEFAULT_PORT for the default port)

DN - distinguished name of the object

attributes - list of attributes to return. Use null for "all attributes."

scope - depth of search (in DN namespace). Use one of the LDAPv2 scopes: SCOPE_BASE, SCOPE_ONE, or SCOPE_SUB.

filter - LDAP filter string (as defined in RFC 1558). Use null for no filter (this effectively makes the URL reference a single object).

LDAPUrl

public LDAPUrl(java.lang.String host,
               int port,
               java.lang.String DN,
               java.util.Enumeration attributes,
               int scope,
               java.lang.String filter)

Constructs a full-blown LDAP URL to specify an LDAP search operation.

Parameters:

host - host name of the LDAP server, or null for "nearest X.500/LDAP"

port - port number of the LDAP server (use LDAPv2.DEFAULT_PORT for the default port)

DN - distinguished name of the object

attributes - list of the attributes to return. Use null for "all attributes."

scope - depth of the search (in DN namespace). Use one of the LDAPv2 scopes: SCOPE_BASE, SCOPE_ONE, or SCOPE_SUB.

filter - LDAP filter string (as defined in RFC 1558). Use null for no filter (this effectively makes the URL reference a single object).

Method Detail

getHost

public java.lang.String getHost()

Return the host name of the LDAP server

Returns:

LDAP host.

getPort

public int getPort()

Return the port number for the LDAP server

Returns:

port number.

getDN

public java.lang.String getDN()

Return the distinguished name encapsulated in the URL

Returns:

target distinguished name.

getAttributes

public java.util.Enumeration getAttributes()

Return the collection of attributes specified in the URL, or null for "every attribute"

Returns:

enumeration of attributes.

getAttributeArray

public java.lang.String[] getAttributeArray()

Return the collection of attributes specified in the URL, or null for "every attribute"

Returns:

string array of attributes.

getScope

public int getScope()

Returns the scope of the search, according to the values SCOPE_BASE, SCOPE_ONE, SCOPE_SUB as defined in LDAPv2. This refers to how deep within the directory namespace the search will look

Returns:

search scope.

getFilter

public java.lang.String getFilter()

Returns the search filter (RFC 1558), or the default if none was specified.

Returns:

the search filter.

getUrl

public java.lang.String getUrl()

Returns a valid string representation of this LDAP URL.

Returns:

the LDAP search expression in URL form.

decode

public static java.lang.String decode(java.lang.String URLEncoded)
                               throws java.net.MalformedURLException

Decodes a URL-encoded string. Any occurences of %HH are decoded to the hex value represented. However, this routine does NOT decode "+" into " ". See RFC 1738 for full details about URL encoding/decoding.

Parameters:

URLEncoded - a segment of a URL which was encoded using the URL encoding rules

Throws:

java.net.MalformedURLException - failed to parse URL

encode

public static java.lang.String encode(java.lang.String toEncode)

Encodes an arbitrary string. Any illegal characters are encoded as %HH. However, this routine does NOT decode "+" into " " (this is a HTTP thing, not a general URL thing). Note that, because Sun's URLEncoder does do this encoding, we can't use it. See RFC 1738 for full details about URL encoding/decoding.

Parameters:

toEncode - an arbitrary string to encode for embedding within a URL

toString

public java.lang.String toString()

Returns the URL in String format

Overrides:

toString in class java.lang.Object

Returns:

the URL in String format

equals

public boolean equals(LDAPUrl url)

Reports if the two objects represent the same URL

Parameters:

url - the object to be compared to

Returns:

true if the two are equivalent