org.identityconnectors.framework.common.objects

Class Uid

java.lang.Object

org.identityconnectors.framework.common.objects.Attribute

org.identityconnectors.framework.common.objects.Uid

public final class Uid
extends Attribute

A single-valued attribute that represents the unique identifier of an object within the name-space of the target resource. If possible, this unique identifier also should be immutable.
When an application creates an object on a target resource, the create operation returns as its result the Uid of the created object. An application also can use the search operation to discover the Uid value for an existing object. An application must use the Uid value to identify the object in any subsequent call to get, delete or update that object. See the documentation for Name for comparison.
Ideally, the value of Uid would be a Globally Unique IDentifier (GUID). However, not every target resource provides a globally unique and immutable identifier for each of its objects. For some connector implementations, therefore, the Uid value is only locally unique and may change when an object is modified. For instance, an LDAP directory service that lacks GUID might use Distinguished Name (DN) as the Uid for each object. A connector that represents each object as a row in a database table might use the value of the primary key as the Uid of an object. The fact that changing an object might change its Uid is the reason that update returns Uid.
Uid by definition must be a single-valued attribute. Its value must always convert to a string, regardless of the underlying type of the native identifier on the target. The string value of any native id must be canonical.
Uid is never allowed to appear in the Schema, nor may Uid appear in the attribute set of a create operation. This is because Uid is not a true attribute of an object, but rather a reference to that object. Uid extends Attribute only so that Uid can be searchable and compatible with the filter translators.

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Constructor Summary

Constructors

Constructor and Description
Uid(String value)
Uid(String value, Name nameHint)
Uid(String value, String revision)
Uid(String value, String revision, Name nameHint)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
protected void	extendToStringMap(Map<String,Object> map)
Name	getNameHint() Returns the last known name of the object that is identified by this Uid.
String	getNameHintValue() Obtain a string representation of the value of name hint.
String	getRevision() Return the string representation of the revision value of the The revision number specifies a given version ot the object identified by the getUidValue()
String	getUidValue() Obtain a string representation of the value of this attribute, which value uniquely identifies a object on the target resource.
int	hashCode()

Methods inherited from class org.identityconnectors.framework.common.objects.Attribute

attributeEquals, getAttributeValueCompleteness, getName, getValue, is, toString

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

Constructor Detail

Uid

public Uid(String value)

Uid

public Uid(String value,
           String revision)

Uid

public Uid(String value,
           Name nameHint)

Uid

public Uid(String value,
           String revision,
           Name nameHint)

Method Detail

getUidValue

public String getUidValue()

Obtain a string representation of the value of this attribute, which value uniquely identifies a object on the target resource.

Returns:

value that uniquely identifies an object.

getNameHint

public Name getNameHint()

Returns the last known name of the object that is identified by this Uid. This returns the __NAME__ attribute of the object as either the connector or the framework client seen it. This hint can be used to optimize some connector operations (e.g. read operations in environments with several servers). It can also be used to make the rename (update) operations more reliable. It can be used to make the use of QuailifiedUid more useful, e.g. when used in the CONTAINER operation option.

Returns:

last known name of the object that is identified by this Uid.

getNameHintValue

public String getNameHintValue()

Obtain a string representation of the value of name hint. Convenience method.

Returns:

string representation of the name hint.

getRevision

public String getRevision()

Return the string representation of the revision value of the
The revision number specifies a given version ot the object identified by the getUidValue()

Returns:

null if the connector does not support the MVCC and does not set this value otherwise return the revision number of the object.

extendToStringMap

protected void extendToStringMap(Map<String,Object> map)

Overrides:

extendToStringMap in class Attribute

equals

public boolean equals(Object o)

Overrides:

equals in class Attribute

hashCode

public int hashCode()

Overrides:

hashCode in class Attribute