AttributeValueExp (Java 2 Platform SE 5.0) (original) (raw)

javax.management

Class AttributeValueExp

java.lang.Object extended by javax.management.AttributeValueExp

All Implemented Interfaces:

public class AttributeValueExp

Represents attributes used as arguments to relational constraints. An AttributeValueExp may be used anywhere a ValueExp is required.

Since:

1.5

See Also:

Serialized Form

Constructor Summary
AttributeValueExp() Deprecated. An instance created with this constructor cannot be used in a query.
AttributeValueExp(String attr) Creates a new AttributeValueExp representing the specified object attribute, named attr.

Method Summary
ValueExp	apply(ObjectName name) Applies the AttributeValueExp on an MBean.
protected Object	getAttribute(ObjectName name) Return the value of the given attribute in the named MBean.
String	getAttributeName() Returns a string representation of the name of the attribute.
void	setMBeanServer(MBeanServer s) Sets the MBean server on which the query is to be performed.
String	toString() Returns the string representing its value.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, [wait](../../java/lang/Object.html#wait%28long, int%29)

Constructor Detail

AttributeValueExp

@Deprecated public AttributeValueExp()

Deprecated. An instance created with this constructor cannot be used in a query.

An AttributeValueExp with a null attribute.

AttributeValueExp

public AttributeValueExp(String attr)

Creates a new AttributeValueExp representing the specified object attribute, named attr.

Parameters:

attr - the name of the attribute whose value is the value of this ValueExp.

Method Detail

getAttributeName

public String getAttributeName()

Returns a string representation of the name of the attribute.

Returns:

the attribute name.

apply

public ValueExp apply(ObjectName name) throws BadStringOperationException, BadBinaryOpValueExpException, BadAttributeValueExpException, InvalidApplicationException

Applies the AttributeValueExp on an MBean.

Specified by:

[apply](../../javax/management/ValueExp.html#apply%28javax.management.ObjectName%29) in interface [ValueExp](../../javax/management/ValueExp.html "interface in javax.management")

Parameters:

name - The name of the MBean on which the AttributeValueExp will be applied.

Returns:

The ValueExp.

Throws:

[BadAttributeValueExpException](../../javax/management/BadAttributeValueExpException.html "class in javax.management")

[InvalidApplicationException](../../javax/management/InvalidApplicationException.html "class in javax.management")

[BadStringOperationException](../../javax/management/BadStringOperationException.html "class in javax.management")

[BadBinaryOpValueExpException](../../javax/management/BadBinaryOpValueExpException.html "class in javax.management")

toString

public String toString()

Returns the string representing its value.

Overrides:

[toString](../../java/lang/Object.html#toString%28%29) in class [Object](../../java/lang/Object.html "class in java.lang")

Returns:

a string representation of the object.

setMBeanServer

public void setMBeanServer(MBeanServer s)

Sets the MBean server on which the query is to be performed.

Specified by:

[setMBeanServer](../../javax/management/ValueExp.html#setMBeanServer%28javax.management.MBeanServer%29) in interface [ValueExp](../../javax/management/ValueExp.html "interface in javax.management")

Parameters:

s - The MBean server on which the query is to be performed.

getAttribute

protected Object getAttribute(ObjectName name)

Return the value of the given attribute in the named MBean. If the attempt to access the attribute generates an exception, return null.

Parameters:

name - the name of the MBean whose attribute is to be returned.

Returns:

the value of the attribute, or null if it could not be obtained.

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.