javax.management
public class AttributeValueExp extends Object implements ValueExp
Since: 1.5
| Constructor Summary | |
|---|---|
| AttributeValueExp(String attr)
Constructs a new {@link AttributeValueExp} using the
specified attribute.
| |
| Method Summary | |
|---|---|
| ValueExp | apply(ObjectName name)
Applies the {@link AttributeValueExp} to the specified
management bean by obtaining the attribute value from
the {@link MBeanServer} and using it to create a
{@link StringValueExp}.
|
| protected Object | getAttribute(ObjectName name)
Returns the value of the attribute by calling the
{@link MBeanServer#getAttribute(ObjectName)} method of
the server returned by {@link QueryEval#getMBeanServer()}.
|
| String | getAttributeName()
Returns the attribute name.
|
| void | setMBeanServer(MBeanServer server)
Sets the {@link MBeanServer} on which the query
will be performed.
|
| String | toString()
Returns the attribute name, quoted.
|
Parameters: attr the name of the attribute whose value will be used for this expression.
Parameters: name the {@link ObjectName} of the bean to obtain the value from.
Returns: a {@link StringValueExp} containing the result.
Throws: BadStringOperationException if an invalid string operation is used by the value expression. BadBinaryOpValueExpException if an invalid expression is used by the value expression. BadAttributeValueExpException if an invalid attribute is used by the value expression. InvalidApplicationException if the value expression is applied to the wrong type of bean.
null is returned.
Parameters: name the {@link ObjectName} of the bean to obtain the value from.
Returns: a {@link StringValueExp} containing the result.
Returns: the attribute name.
Parameters: server the new server.
Returns: the quoted attribute name.