API java : Attributes

javax.naming.directory
Interface Attributes

All Superinterfaces:

Cloneable, Serializable

All Known Implementing Classes:

BasicAttributes

public interface Attributes
extends Cloneable, Serializable

This interface represents a collection of attributes.

In a directory, named objects can have associated with them attributes. The Attributes interface represents a collection of attributes. For example, you can request from the directory the attributes associated with an object. Those attributes are returned in an object that implements the Attributes interface.

Attributes in an object that implements the Attributes interface are unordered. The object can have zero or more attributes. Attributes is either case-sensitive or case-insensitive (case-ignore). This property is determined at the time the Attributes object is created. (see BasicAttributes constructor for example). In a case-insensitive Attributes, the case of its attribute identifiers is ignored when searching for an attribute, or adding attributes. In a case-sensitive Attributes, the case is significant.

Note that updates to Attributes (such as adding or removing an attribute) do not affect the corresponding representation in the directory. Updates to the directory can only be effected using operations in the DirContext interface.

Since:

1.3

See Also:

DirContext.getAttributes(javax.naming.Name), DirContext.modifyAttributes(javax.naming.Name, int, javax.naming.directory.Attributes), DirContext.bind(javax.naming.Name, java.lang.Object, javax.naming.directory.Attributes), DirContext.rebind(javax.naming.Name, java.lang.Object, javax.naming.directory.Attributes), DirContext.createSubcontext(javax.naming.Name, javax.naming.directory.Attributes), DirContext.search(javax.naming.Name, javax.naming.directory.Attributes, java.lang.String[]), BasicAttributes

Method Summary
Object	clone()           Makes a copy of the attribute set.
Attribute	get(String attrID)           Retrieves the attribute with the given attribute id from the attribute set.
NamingEnumeration<? extends Attribute>	getAll()           Retrieves an enumeration of the attributes in the attribute set.
NamingEnumeration<String>	getIDs()           Retrieves an enumeration of the ids of the attributes in the attribute set.
boolean	isCaseIgnored()           Determines whether the attribute set ignores the case of attribute identifiers when retrieving or adding attributes.
Attribute	put(Attribute attr)           Adds a new attribute to the attribute set.
Attribute	put(String attrID, Object val)           Adds a new attribute to the attribute set.
Attribute	remove(String attrID)           Removes the attribute with the attribute id 'attrID' from the attribute set.
int	size()           Retrieves the number of attributes in the attribute set.

 

Method Detail

isCaseIgnored

boolean isCaseIgnored()

Determines whether the attribute set ignores the case of attribute identifiers when retrieving or adding attributes.

Returns:

true if case is ignored; false otherwise.

size

int size()

Retrieves the number of attributes in the attribute set.

Returns:

The nonnegative number of attributes in this attribute set.

get

Attribute get(String attrID)

Retrieves the attribute with the given attribute id from the attribute set.

Parameters:

attrID - The non-null id of the attribute to retrieve. If this attribute set ignores the character case of its attribute ids, the case of attrID is ignored.

Returns:

The attribute identified by attrID; null if not found.

See Also:

put(java.lang.String, java.lang.Object), remove(java.lang.String)

getAll

NamingEnumeration<? extends Attribute> getAll()

Retrieves an enumeration of the attributes in the attribute set. The effects of updates to this attribute set on this enumeration are undefined.

Returns:

A non-null enumeration of the attributes in this attribute set. Each element of the enumeration is of class Attribute. If attribute set has zero attributes, an empty enumeration is returned.

getIDs

NamingEnumeration<String> getIDs()

Retrieves an enumeration of the ids of the attributes in the attribute set. The effects of updates to this attribute set on this enumeration are undefined.

Returns:

A non-null enumeration of the attributes' ids in this attribute set. Each element of the enumeration is of class String. If attribute set has zero attributes, an empty enumeration is returned.

put

Attribute put(String attrID,
              Object val)

Adds a new attribute to the attribute set.

Parameters:

attrID - non-null The id of the attribute to add. If the attribute set ignores the character case of its attribute ids, the case of attrID is ignored.

val - The possibly null value of the attribute to add. If null, the attribute does not have any values.

Returns:

The Attribute with attrID that was previous in this attribute set; null if no such attribute existed.

See Also:

remove(java.lang.String)

put

Attribute put(Attribute attr)

Adds a new attribute to the attribute set.

Parameters:

attr - The non-null attribute to add. If the attribute set ignores the character case of its attribute ids, the case of attr's identifier is ignored.

Returns:

The Attribute with the same ID as attr that was previous in this attribute set; null if no such attribute existed.

See Also:

remove(java.lang.String)

remove

Attribute remove(String attrID)

Removes the attribute with the attribute id 'attrID' from the attribute set. If the attribute does not exist, ignore.

Parameters:

attrID - The non-null id of the attribute to remove. If the attribute set ignores the character case of its attribute ids, the case of attrID is ignored.

Returns:

The Attribute with the same ID as attrID that was previous in the attribute set; null if no such attribute existed.

clone

Object clone()

Makes a copy of the attribute set. The new set contains the same attributes as the original set: the attributes are not themselves cloned. Changes to the copy will not affect the original and vice versa.

Returns:

A non-null copy of this attribute set.