Package org.apache.directory.api.ldap.model.name

Class Ava

java.lang.Object

org.apache.directory.api.ldap.model.name.Ava

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, Comparable<Ava>

public class Ava
extends Object
implements Externalizable, Cloneable, Comparable<Ava>

A Attribute Type And Value, which is the basis of all Rdn. It contains a type, and a value. The type must not be case sensitive. Superfluous leading and trailing spaces MUST have been trimmed before. The value MUST be in UTF8 format, according to RFC 2253. If the type is in OID form, then the value must be a hexadecimal string prefixed by a '#' character. Otherwise, the string must respect the RC 2253 grammar.

We will also keep a User Provided form of the AVA (Attribute Type And Value), called upName.

This class is immutable

Author:

Apache Directory Project

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
(package private) AttributeType	attributeType	The attributeType if the Ava is schemaAware
private int	h	The computed hashcode
private static org.slf4j.Logger	LOG	The LoggerFactory used by this class
(package private) String	normType	The normalized Name type
private SchemaManager	schemaManager	the schema manager
private static long	serialVersionUID	Declares the Serial Version Uid.
(package private) String	upName	The user provided Ava
(package private) String	upType	The user provided Name type
(package private) Value	value	The value.

Constructor Summary

Constructors

Constructor	Description
Ava()	Constructs an empty Ava
Ava(String upType, byte[] upValue)	Construct an Ava containing a binary value.
Ava(String upType, String upValue)	Construct an Ava with a String value.
Ava(String upType, String normType, Value value, String upName)	Construct an Ava.
Ava(AttributeType attributeType, String upType, String normType, Value value, String upName)	Construct an Ava.
Ava(SchemaManager schemaManager)	Constructs an empty schema aware Ava.
Ava(SchemaManager schemaManager, String upType, byte[] upValue)	Construct a schema aware Ava containing a binary value.
Ava(SchemaManager schemaManager, String upType, String upValue)	Construct a schema aware Ava with a String value.
Ava(SchemaManager schemaManager, String upType, String upName, byte[] upValue)	Construct a schema aware Ava containing a binary value.
Ava(SchemaManager schemaManager, String upType, String upName, String upValue)	Construct a schema aware Ava with a String value.
Ava(SchemaManager schemaManager, String upType, String normType, Value value)	Construct an Ava.
Ava(SchemaManager schemaManager, Ava ava)	Constructs new Ava using the provided SchemaManager and AVA

Method Summary

Modifier and Type	Method	Description
private void	apply(SchemaManager schemaManager)	Apply a SchemaManager to the Ava.
Ava	clone()	Implements the cloning.
int	compareTo(Ava that)
private int	compareValues(Ava that)
private void	createAva(String upType, Value upValue)	Construct an Ava.
private void	createAva(SchemaManager schemaManager, String upType, Value value)	Construct a schema aware Ava.
int	deserialize(byte[] buffer, int pos)	Deserialize an AVA from a byte[], starting at a given position
boolean	equals(Object obj)
AttributeType	getAttributeType()
String	getEscaped()
String	getName()	Get the user provided form of this attribute type and value
String	getNormType()	Get the normalized type of a Ava
String	getType()	Get the user provided type of a Ava
Value	getValue()	Get the Value of a Ava
int	hashCode()	Gets the hashcode of this object.
boolean	isSchemaAware()	Tells if the Ava is schema aware or not.
void	readExternal(ObjectInput in)	We read back the data to create a new ATAV.
int	serialize(byte[] buffer, int pos)	Serialize the AVA into a buffer at the given position.
(package private) void	setAttributeType(SchemaManager schemaManager, String upType)
String	toString()	A String representation of an Ava, as provided by the user.
void	writeExternal(ObjectOutput out)	An Ava is composed of a type and a value.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

Declares the Serial Version Uid.

See Also:

Always Declare Serial Version Uid, Constant Field Values

LOG

private static final org.slf4j.Logger LOG

The LoggerFactory used by this class

normType

String normType

The normalized Name type

upType

String upType

The user provided Name type

value

Value value

The value. It can be a String or a byte array

upName

String upName

The user provided Ava

attributeType

AttributeType attributeType

The attributeType if the Ava is schemaAware

schemaManager

private transient SchemaManager schemaManager

the schema manager

h

private volatile int h

The computed hashcode

Constructor Detail

Ava

public Ava()

Constructs an empty Ava

Ava

public Ava(SchemaManager schemaManager)

Constructs an empty schema aware Ava.

Parameters:

schemaManager - The SchemaManager instance

Ava

public Ava(SchemaManager schemaManager,
           Ava ava)
    throws LdapInvalidDnException

Constructs new Ava using the provided SchemaManager and AVA

Parameters:

schemaManager - The SchemaManager instance

ava - The AVA to copy

Throws:

LdapInvalidDnException - If the Ava is invalid

Ava

public Ava(String upType,
           byte[] upValue)
    throws LdapInvalidDnException

Construct an Ava containing a binary value.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

upType - The User Provided type

upValue - The User Provided binary value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

public Ava(SchemaManager schemaManager,
           String upType,
           byte[] upValue)
    throws LdapInvalidDnException

Construct a schema aware Ava containing a binary value. The AttributeType and value will be normalized accordingly to the given SchemaManager.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

schemaManager - The SchemaManager instance

upType - The User Provided type

upValue - The User Provided binary value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

public Ava(SchemaManager schemaManager,
           String upType,
           String upName,
           byte[] upValue)
    throws LdapInvalidDnException

Construct a schema aware Ava containing a binary value. The AttributeType and value will be normalized accordingly to the given SchemaManager.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

schemaManager - The SchemaManager instance

upType - The User Provided type

upName - the User Provided AVA

upValue - The User Provided binary value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

public Ava(String upType,
           String upValue)
    throws LdapInvalidDnException

Construct an Ava with a String value.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

upType - The User Provided type

upValue - The User Provided String value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

public Ava(SchemaManager schemaManager,
           String upType,
           String upValue)
    throws LdapInvalidDnException

Construct a schema aware Ava with a String value.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

schemaManager - The SchemaManager instance

upType - The User Provided type

upValue - The User Provided String value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

public Ava(SchemaManager schemaManager,
           String upType,
           String upName,
           String upValue)
    throws LdapInvalidDnException

Construct a schema aware Ava with a String value.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

schemaManager - The SchemaManager instance

upType - The User Provided type

upName - the User provided AVA

upValue - The User Provided String value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

Ava(String upType,
    String normType,
    Value value,
    String upName)
throws LdapInvalidDnException

Construct an Ava. The type and value are normalized :

• the type is trimmed and lowercased
• the value is trimmed

Note that the upValue should not be null or empty, or resolved to an empty string after having trimmed it.

Parameters:

upType - The User Provided type

normType - The normalized type

value - The User Provided value

upName - The User Provided name (may be escaped)

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

Ava(AttributeType attributeType,
    String upType,
    String normType,
    Value value,
    String upName)
throws LdapInvalidDnException

Construct an Ava. The type and value are normalized :

• the type is trimmed and lowercased
• the value is trimmed

Note that the upValue should not be null or empty, or resolved to an empty string after having trimmed it.

Parameters:

attributeType - The AttributeType for this value

upType - The User Provided type

normType - The normalized type

value - The value

upName - The User Provided name (may be escaped)

Throws:

LdapInvalidDnException - If the given type or value are invalid

Ava

Ava(SchemaManager schemaManager,
    String upType,
    String normType,
    Value value)
throws LdapInvalidDnException

Construct an Ava. The type and value are normalized :

• the type is trimmed and lowercased
• the value is trimmed

Note that the upValue should not be null or empty, or resolved to an empty string after having trimmed it.

Parameters:

schemaManager - The SchemaManager

upType - The User Provided type

normType - The normalized type

value - The value

Throws:

LdapInvalidDnException - If the given type or value are invalid

Method Detail

createAva

private void createAva(SchemaManager schemaManager,
                       String upType,
                       Value value)

Construct a schema aware Ava. The AttributeType and value will be checked accordingly to the SchemaManager.

Note that the upValue should not be null or empty, or resolve to an empty string after having trimmed it.

Parameters:

schemaManager - The SchemaManager instance

upType - The User Provided type

value - The value

createAva

private void createAva(String upType,
                       Value upValue)
                throws LdapInvalidDnException

Construct an Ava. The type and value are normalized :

• the type is trimmed and lowercased
• the value is trimmed

Note that the upValue should not be null or empty, or resolved to an empty string after having trimmed it.

Parameters:

upType - The User Provided type

upValue - The User Provided value

Throws:

LdapInvalidDnException - If the given type or value are invalid

apply

private void apply(SchemaManager schemaManager)
            throws LdapInvalidDnException

Apply a SchemaManager to the Ava. It will normalize the Ava.
If the Ava already had a SchemaManager, then the new SchemaManager will be used instead.

Parameters:

schemaManager - The SchemaManager instance to use

Throws:

LdapInvalidDnException - If the Ava can't be normalized accordingly to the given SchemaManager

getNormType

public String getNormType()

Get the normalized type of a Ava

Returns:

The normalized type

getType

public String getType()

Get the user provided type of a Ava

Returns:

The user provided type

getValue

public Value getValue()

Get the Value of a Ava

Returns:

The value

getName

public String getName()

Get the user provided form of this attribute type and value

Returns:

The user provided form of this ava

getEscaped

public String getEscaped()

Returns:

The Ava as an escaped String

clone

public Ava clone()

Implements the cloning.

Overrides:

clone in class Object

Returns:

a clone of this object

hashCode

public int hashCode()

Gets the hashcode of this object.

Overrides:

hashCode in class Object

Returns:

The instance hash code

See Also:

Object.hashCode()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

See Also:

Object.equals(Object)

serialize

public int serialize(byte[] buffer,
                     int pos)
              throws IOException

Serialize the AVA into a buffer at the given position.

Parameters:

buffer - The buffer which will contain the serialized Ava

pos - The position in the buffer for the serialized value

Returns:

The new position in the buffer

Throws:

IOException - Id the serialization failed

deserialize

public int deserialize(byte[] buffer,
                       int pos)
                throws IOException,
                       LdapInvalidAttributeValueException

Deserialize an AVA from a byte[], starting at a given position

Parameters:

buffer - The buffer containing the AVA

pos - The position in the buffer

Returns:

The new position

Throws:

IOException - If the serialized value is not an AVA

LdapInvalidAttributeValueException - If the serialized AVA is invalid

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

An Ava is composed of a type and a value. The data are stored following the structure :

• upName The User provided ATAV
• start The position of this ATAV in the Dn
• length The ATAV length
• upType The user Provided Type
• normType The normalized AttributeType
• isHR Tells if the value is a String or not

if the value is a String :

• value The value

if the value is binary :

• valueLength
• value The value

Specified by:

writeExternal in interface Externalizable

Throws:

IOException - If the Ava can't be written in the stream

See Also:

Externalizable.readExternal(ObjectInput)

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

We read back the data to create a new ATAV. The structure read is exposed in the writeExternal(ObjectOutput) method

Specified by:

readExternal in interface Externalizable

Throws:

IOException - If the Ava can't b written to the stream

ClassNotFoundException - If we can't deserialize an Ava from the stream

See Also:

Externalizable.readExternal(ObjectInput)

isSchemaAware

public boolean isSchemaAware()

Tells if the Ava is schema aware or not.

Returns:

true if the Ava is schema aware

getAttributeType

public AttributeType getAttributeType()

Returns:

the attributeType

setAttributeType

void setAttributeType(SchemaManager schemaManager,
                      String upType)
               throws LdapInvalidDnException

Throws:

LdapInvalidDnException

compareValues

private int compareValues(Ava that)

compareTo

public int compareTo(Ava that)

Specified by:

compareTo in interface Comparable<Ava>

See Also:

Comparable.compareTo(Object)

toString

public String toString()

A String representation of an Ava, as provided by the user.

Overrides:

toString in class Object

Returns:

A string representing an Ava