Module java.naming
Package javax.naming.directory

Class BasicAttribute

java.lang.Object
javax.naming.directory.BasicAttribute
All Implemented Interfaces:
Serializable, Cloneable, Attribute
public class BasicAttribute extends Object implements Attribute
This class provides a basic implementation of the Attribute interface.

This implementation does not support the schema methods getAttributeDefinition() and getAttributeSyntaxDefinition(). They simply throw OperationNotSupportedException. Subclasses of BasicAttribute should override these methods if they support them.

The BasicAttribute class by default uses Object.equals() to determine equality of attribute values when testing for equality or when searching for values, except when the value is an array. For an array, each element of the array is checked using Object.equals(). Subclasses of BasicAttribute can make use of schema information when doing similar equality checks by overriding methods in which such use of schema is meaningful. Similarly, the BasicAttribute class by default returns the values passed to its constructor and/or manipulated using the add/remove methods. Subclasses of BasicAttribute can override get() and getAll() to get the values dynamically from the directory (or implement the Attribute interface directly instead of subclassing BasicAttribute).

Note that updates to BasicAttribute (such as adding or removing a value) does not affect the corresponding representation of the attribute in the directory. Updates to the directory can only be effected using operations in the DirContext interface.

A BasicAttribute instance is not synchronized against concurrent multithreaded access. Multiple threads trying to access and modify a BasicAttribute should lock the object.

Since:
1.3
See Also: