org.apache.directory.api.ldap.model.schema

Class LdapSyntax

java.lang.Object

org.apache.directory.api.ldap.model.schema.AbstractSchemaObject

org.apache.directory.api.ldap.model.schema.LdapSyntax

All Implemented Interfaces:

Serializable, SchemaObject

public class LdapSyntax
extends AbstractSchemaObject

A syntax definition. Each attribute stored in a directory has a defined syntax (i.e. data type) which constrains the structure and format of its values. The description of each syntax specifies how attribute or assertion values conforming to the syntax are normally represented when transferred in LDAP operations. This representation is referred to as the LDAP-specific encoding to distinguish it from other methods of encoding attribute values.

According to ldapbis [MODELS]:

  4.1.5. LDAP Syntaxes
 
    LDAP Syntaxes of (attribute and assertion) values are described in
    terms of ASN.1 [X.680] and, optionally, have an octet string encoding
    known as the LDAP-specific encoding.  Commonly, the LDAP-specific
    encoding is constrained to string of Universal Character Set (UCS)
    [ISO10646] characters in UTF-8 [UTF-8] form.
 
    Each LDAP syntax is identified by an object identifier (OID).
 
    LDAP syntax definitions are written according to the ABNF:
 
      SyntaxDescription = LPAREN WSP
          numericoid                ; object identifier
          [ SP "DESC" SP qdstring ] ; description
          extensions WSP RPAREN     ; extensions
 
    where:
      [numericoid] is object identifier assigned to this LDAP syntax;
      DESC [qdstring] is a short descriptive string; and
      [extensions] describe extensions.
 

Author:

Apache Directory Project

See Also:

RFC2252 Section 4.3.3, ldapbis [MODELS], Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	hasHumanReadableFlag A flag set to true if the Syntax has a X-NOT-HUMAN-READABLE extension
protected boolean	isHumanReadable the human readable flag
static long	serialVersionUID The mandatory serialVersionUID
protected SyntaxChecker	syntaxChecker The associated SyntaxChecker

Fields inherited from class org.apache.directory.api.ldap.model.schema.AbstractSchemaObject

description, extensions, isEnabled, isObsolete, isReadOnly, locked, names, objectType, oid, schemaName, specification

Constructor Summary

Constructors

Constructor and Description
LdapSyntax(String oid) Creates a Syntax object using a unique OID.
LdapSyntax(String oid, String description) Creates a Syntax object using a unique OID.
LdapSyntax(String oid, String description, boolean isHumanReadable) Creates a Syntax object using a unique OID.

Method Summary

Modifier and Type	Method and Description
void	clear() Clear the current SchemaObject : remove all the references to other objects, and all the Maps.
LdapSyntax	copy() Copy the current SchemaObject on place
boolean	equals(Object o)
SyntaxChecker	getSyntaxChecker() Gets the SyntaxChecker used to validate values in accordance with this Syntax.
boolean	isHumanReadable() Gets whether or not the Syntax is human readable.
void	setHumanReadable(boolean humanReadable) Sets the human readable flag value.
void	setSyntaxChecker(SyntaxChecker syntaxChecker) Sets the associated SyntaxChecker
String	toString()
void	updateSyntaxChecker(SyntaxChecker newSyntaxChecker) Update the associated SyntaxChecker, even if the SchemaObject is readOnly

Methods inherited from class org.apache.directory.api.ldap.model.schema.AbstractSchemaObject

addExtension, addExtension, addName, compareOid, copy, getDescription, getExtension, getExtensions, getName, getNames, getObjectType, getOid, getSchemaName, getSpecification, hasExtension, hashCode, isDisabled, isEnabled, isObsolete, isReadOnly, lock, setDescription, setEnabled, setExtensions, setNames, setNames, setObsolete, setOid, setReadOnly, setSchemaName, setSpecification, unlock

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

public static final long serialVersionUID

The mandatory serialVersionUID

See Also:

Constant Field Values

isHumanReadable

protected boolean isHumanReadable

the human readable flag

hasHumanReadableFlag

private boolean hasHumanReadableFlag

A flag set to true if the Syntax has a X-NOT-HUMAN-READABLE extension

syntaxChecker

protected SyntaxChecker syntaxChecker

The associated SyntaxChecker

Constructor Detail

LdapSyntax

public LdapSyntax(String oid)

Creates a Syntax object using a unique OID.

Parameters:

oid - the OID for this Syntax

LdapSyntax

public LdapSyntax(String oid,
                  String description)

Creates a Syntax object using a unique OID.

Parameters:

oid - the OID for this syntax

description - the description for this syntax

LdapSyntax

public LdapSyntax(String oid,
                  String description,
                  boolean isHumanReadable)

Creates a Syntax object using a unique OID.

Parameters:

oid - the OID for this syntax

description - the description for this syntax

isHumanReadable - true if this syntax is human readable

Method Detail

isHumanReadable

public boolean isHumanReadable()

Gets whether or not the Syntax is human readable.

Returns:

true if the syntax can be interpreted by humans, false otherwise

setHumanReadable

public void setHumanReadable(boolean humanReadable)

Sets the human readable flag value.

Parameters:

humanReadable - the human readable flag value to set

getSyntaxChecker

public SyntaxChecker getSyntaxChecker()

Gets the SyntaxChecker used to validate values in accordance with this Syntax.

Returns:

the SyntaxChecker

setSyntaxChecker

public void setSyntaxChecker(SyntaxChecker syntaxChecker)

Sets the associated SyntaxChecker

Parameters:

syntaxChecker - The associated SyntaxChecker

updateSyntaxChecker

public void updateSyntaxChecker(SyntaxChecker newSyntaxChecker)

Update the associated SyntaxChecker, even if the SchemaObject is readOnly

Parameters:

newSyntaxChecker - The associated SyntaxChecker

toString

public String toString()

Overrides:

toString in class Object

copy

public LdapSyntax copy()

Copy the current SchemaObject on place

Returns:

The copied SchemaObject

equals

public boolean equals(Object o)

Specified by:

equals in interface SchemaObject

Overrides:

equals in class AbstractSchemaObject

clear

public void clear()

Clear the current SchemaObject : remove all the references to other objects, and all the Maps.

Specified by:

clear in interface SchemaObject

Overrides:

clear in class AbstractSchemaObject