    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.pool2.impl;
    018
    019/**
    020 * The interface that defines the information about pooled objects that will be
    021 * exposed via JMX.
    022 * <p>
    023 * NOTE: This interface exists only to define those attributes and methods that
    024 *       will be made available via JMX. It must not be implemented by clients
    025 *       as it is subject to change between major, minor and patch version
    026 *       releases of commons pool. Clients that implement this interface may
    027 *       not, therefore, be able to upgrade to a new minor or patch release
    028 *       without requiring code changes.
    029 * </p>
    030 *
    031 * @since 2.0
    032 */
    033public interface DefaultPooledObjectInfoMBean {
    034
    035    /**
    036     * Gets the number of times this object has been borrowed.
    037     * @return The number of times this object has been borrowed.
    038     * @since 2.1
    039     */
    040    long getBorrowedCount();
    041
    042    /**
    043     * Gets the time (using the same basis as
    044     * {@link System#currentTimeMillis()}) that pooled object was created.
    045     *
    046     * @return The creation time for the pooled object
    047     */
    048    long getCreateTime();
    049
    050    /**
    051     * Gets the time that pooled object was created.
    052     *
    053     * @return The creation time for the pooled object formatted as
    054     *         {@code yyyy-MM-dd HH:mm:ss Z}
    055     */
    056    String getCreateTimeFormatted();
    057
    058    /**
    059     * Gets the time (using the same basis as
    060     * {@link System#currentTimeMillis()}) the polled object was last borrowed.
    061     *
    062     * @return The time the pooled object was last borrowed
    063     */
    064    long getLastBorrowTime();
    065
    066    /**
    067     * Gets the time that pooled object was last borrowed.
    068     *
    069     * @return The last borrowed time for the pooled object formatted as
    070     *         {@code yyyy-MM-dd HH:mm:ss Z}
    071     */
    072    String getLastBorrowTimeFormatted();
    073
    074    /**
    075     * Gets the stack trace recorded when the pooled object was last borrowed.
    076     *
    077     * @return The stack trace showing which code last borrowed the pooled
    078     *         object
    079     */
    080    String getLastBorrowTrace();
    081
    082    /**
    083     * Gets the time (using the same basis as
    084     * {@link System#currentTimeMillis()})the wrapped object was last returned.
    085     *
    086     * @return The time the object was last returned
    087     */
    088    long getLastReturnTime();
    089
    090    /**
    091     * Gets the time that pooled object was last returned.
    092     *
    093     * @return The last returned time for the pooled object formatted as
    094     *         {@code yyyy-MM-dd HH:mm:ss Z}
    095     */
    096    String getLastReturnTimeFormatted();
    097
    098    /**
    099     * Gets a String form of the wrapper for debug purposes. The format is
    100     * not fixed and may change at any time.
    101     *
    102     * @return A string representation of the pooled object
    103     *
    104     * @see Object#toString()
    105     */
    106    String getPooledObjectToString();
    107
    108    /**
    109     * Gets the name of the class of the pooled object.
    110     *
    111     * @return The pooled object's class name
    112     *
    113     * @see Class#getName()
    114     */
    115    String getPooledObjectType();
    116}