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package javax.management;

// java import
import java.io.Serializable;



Represents relational constraints similar to database query "where clauses". Instances of QueryExp are returned by the static methods of the Query class.


It is possible, but not recommended, to create custom queries by implementing this interface. In that case, it is better to extend the QueryEval class than to implement the interface directly, so that the setMBeanServer method works correctly. 
See Also:
Since:1.5
/**
 * <p>Represents relational constraints similar to database query "where
 * clauses". Instances of QueryExp are returned by the static methods of the
 * {@link Query} class.</p>
 *
 * <p>It is possible, but not
 * recommended, to create custom queries by implementing this
 * interface.  In that case, it is better to extend the {@link
 * QueryEval} class than to implement the interface directly, so that
 * the {@link #setMBeanServer} method works correctly.
 *
 * @see MBeanServer#queryNames MBeanServer.queryNames
 * @since 1.5
 */
public interface QueryExp extends Serializable {


     
Applies the QueryExp on an MBean.

Params:
  • name – The name of the MBean on which the QueryExp will be applied.
Throws:
Returns: True if the query was successfully applied to the MBean, false otherwise
/**
      * Applies the QueryExp on an MBean.
      *
      * @param name The name of the MBean on which the QueryExp will be applied.
      *
      * @return  True if the query was successfully applied to the MBean, false otherwise
      *
      * @throws BadStringOperationException when an invalid string
      * operation is passed to a method for constructing a query
      * @throws BadBinaryOpValueExpException when an invalid expression
      * is passed to a method for constructing a query
      * @throws BadAttributeValueExpException when an invalid MBean
      * attribute is passed to a query constructing method
      * @throws InvalidApplicationException when an invalid apply is attempted
      */
     public boolean apply(ObjectName name) throws BadStringOperationException, BadBinaryOpValueExpException,
         BadAttributeValueExpException, InvalidApplicationException ;

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

Params:
  • s – The MBean server on which the query is to be performed.
/**
      * Sets the MBean server on which the query is to be performed.
      *
      * @param s The MBean server on which the query is to be performed.
      */
     public void setMBeanServer(MBeanServer s) ;

 }