javax.wbem.query
Class AttributeExp

java.lang.Object
  |
  +--javax.wbem.query.ValueExp
        |
        +--javax.wbem.query.AttributeExp

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

QualifiedAttributeExp

public class AttributeExp

extends ValueExp

This class represents SQL attributes used as arguments to SQL relational constraints. An AttributeExp may be used anywhere a ValueExp is required.

Since:

WBEM 1.0

Constructor Summary

AttributeExp()
Creates a new AttributeExp with an empty attribute name

AttributeExp(java.lang.String attr)
Creates a new AttributeExp representing the object attribute named by attr.

Method Summary

ValueExp	apply(CIMElement obj) Returns the value associated with this attribute for the input 'row'.
java.lang.String	getAttributeName() Accessor for attribute name.
java.lang.String	toString() Returns the SQL syntax string representing its value.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AttributeExp

public AttributeExp(java.lang.String attr)

Creates a new AttributeExp representing the object attribute named by attr.

Parameters:

attr - The name of the attribute

AttributeExp

public AttributeExp()

Creates a new AttributeExp with an empty attribute name

Method Detail

getAttributeName

public java.lang.String getAttributeName()

Accessor for attribute name.

apply

public ValueExp apply(CIMElement obj)
               throws CIMException

Returns the value associated with this attribute for the input 'row'. In WQL, rows are mapped into CIMElements. The only supported CIMElement is CIMInstance. For CIMInstance, the returned Value is the value of the property with the same name as the attribute name.

Overrides:

apply in class ValueExp

Parameters:

obj - input 'row'

Returns:

ValueExp associated with the 'column' of the same name in the input 'row'

toString

public java.lang.String toString()

Returns the SQL syntax string representing its value.

Overrides:

toString in class java.lang.Object

Returns:

The expression's string value in SQL syntax.