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91 lines
3.1 KiB
Java
91 lines
3.1 KiB
Java
package com.alibaba.druid.pool.console;
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import java.beans.PropertyChangeListener;
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import javax.management.MBeanServerConnection;
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/**
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* {@code JConsoleContext} represents a JConsole connection to a target
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* application.
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* <p>
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* {@code JConsoleContext} notifies any {@code PropertyChangeListeners}
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* about the {@linkplain #CONNECTION_STATE_PROPERTY <i>ConnectionState</i>}
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* property change to {@link ConnectionState#CONNECTED CONNECTED} and
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* {@link ConnectionState#DISCONNECTED DISCONNECTED}.
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* The {@code JConsoleContext} instance will be the source for
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* any generated events.
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* <p>
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*
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* @since 1.6
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*/
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public interface JConsoleContext {
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/**
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* The {@link ConnectionState ConnectionState} bound property name.
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*/
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public static String CONNECTION_STATE_PROPERTY = "connectionState";
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/**
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* Values for the {@linkplain #CONNECTION_STATE_PROPERTY
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* <i>ConnectionState</i>} bound property.
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*/
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public enum ConnectionState {
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/**
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* The connection has been successfully established.
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*/
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CONNECTED,
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/**
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* No connection present.
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*/
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DISCONNECTED,
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/**
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* The connection is being attempted.
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*/
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CONNECTING
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}
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/**
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* Returns the {@link MBeanServerConnection MBeanServerConnection} for the
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* connection to an application. The returned
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* {@code MBeanServerConnection} object becomes invalid when
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* the connection state is changed to the
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* {@link ConnectionState#DISCONNECTED DISCONNECTED} state.
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*
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* @return the {@code MBeanServerConnection} for the
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* connection to an application.
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*/
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public MBeanServerConnection getMBeanServerConnection();
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/**
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* Returns the current connection state.
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* @return the current connection state.
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*/
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public ConnectionState getConnectionState();
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/**
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* Add a {@link java.beans.PropertyChangeListener PropertyChangeListener}
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* to the listener list.
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* The listener is registered for all properties.
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* The same listener object may be added more than once, and will be called
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* as many times as it is added.
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* If {@code listener} is {@code null}, no exception is thrown and
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* no action is taken.
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*
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* @param listener The {@code PropertyChangeListener} to be added
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*/
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public void addPropertyChangeListener(PropertyChangeListener listener);
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/**
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* Removes a {@link java.beans.PropertyChangeListener PropertyChangeListener}
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* from the listener list. This
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* removes a {@code PropertyChangeListener} that was registered for all
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* properties. If {@code listener} was added more than once to the same
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* event source, it will be notified one less time after being removed. If
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* {@code listener} is {@code null}, or was never added, no exception is
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* thrown and no action is taken.
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*
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* @param listener the {@code PropertyChangeListener} to be removed
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*/
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public void removePropertyChangeListener(PropertyChangeListener listener);
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}
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