eventmanager.java

intra_mart是日本NDD公司开发的著名企业应用解决方案中间件。集成了J2ee服务器

/*
 * EventManager.java
 *
 * Created on 2001/11/30, 15:55
 */

package jp.co.intra_mart.framework.base.event;

import java.util.HashMap;
import java.util.Map;
import java.util.ResourceBundle;

import jp.co.intra_mart.framework.base.util.UserInfo;
import jp.co.intra_mart.framework.system.log.LogManager;
import jp.co.intra_mart.framework.system.log.LogConstant;
import jp.co.intra_mart.framework.system.property.PropertyManager;

import java.util.MissingResourceException;

import jp.co.intra_mart.framework.system.property.PropertyHandlerException;
import jp.co.intra_mart.framework.system.property.PropertyManagerException;
import jp.co.intra_mart.framework.system.exception.ApplicationException;
import jp.co.intra_mart.framework.system.exception.SystemException;

/**
 * 僀儀儞僩儅僱乕僕儍偱偡丅
 *
 * @author INTRAMART
 * @version 1.0
 */
public class EventManager {

    /**
     * 僀儀儞僩僼儗乕儉儚乕僋偺儘僌偺僾儗僼傿僢僋僗
     */
    static String LOG_HEAD = "[J2EE][Event]";

    /**
     * 僀儀儞僩僾儘僷僥傿僴儞僪儔偺僉乕
     */
    public static final String EVENT_PROPERTY_HANDLER_KEY = "event";

    /**
     * 僨乕僞儅僱乕僕儍庢摼僼儔僌
     */
    private static Boolean managerFlag = new Boolean(false);

    /**
     * 僀儀儞僩儅僱乕僕儍
     */
    private static EventManager manager;

    /**
     * 僀儀儞僩僾儘僷僥傿僴儞僪儔
     */
    private EventPropertyHandler eventPropertyHandler;

    /**
     * 僀儀儞僩儕僗僫僼傽僋僩儕偺廤崌
     */
    private Map factories;

    /**
     * 僀儀儞僩儅僱乕僕儍傪庢摼偟傑偡丅
     *
     * @return 僀儀儞僩儅僱乕僕儍
     * @throws EventManagerException 僀儀儞僩儅僱乕僕儍偺惗惉帪偵椺奜偑敪惗
     */
    public static EventManager getEventManager() throws EventManagerException {
        if (!managerFlag.booleanValue()) {
            synchronized (managerFlag) {
                if (!managerFlag.booleanValue()) {
                    try {
                        manager = new EventManager();
                    } catch (EventManagerException e) {
                        String message = null;
                        try {
                            message =
                                ResourceBundle
                                    .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                                    .getString("EventManager.FailedToCreateManager");
                        } catch (MissingResourceException ex) {
                        }
                        LogManager.getLogManager().getLogAgent().sendMessage(
                            EventManager.class.getName(),
                            LogConstant.LEVEL_ERROR,
                            LOG_HEAD + message,
                            e);
                        throw e;
                    }
                    managerFlag = new Boolean(true);
                    String message = null;
                    try {
                        message =
                            ResourceBundle
                                .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                                .getString("EventManager.SuccessedToCreateManager");
                    } catch (MissingResourceException e) {
                    }
                    LogManager.getLogManager().getLogAgent().sendMessage(
                        EventManager.class.getName(),
                        LogConstant.LEVEL_INFO,
                        LOG_HEAD + message);
                }
            }
        }

        return manager;
    }

    /**
     * EventManager傪惗惉偡傞僐儞僗僩儔僋僞偱偡丅
     * 偙偺僐儞僗僩儔僋僞偼柧帵揑偵屇傃弌偡偙偲偼偱偒傑偣傫丅
     *
     * @throws EventManagerException 僒乕價僗儅僱乕僕儍偺惗惉偵幐攕偟偨
     */
    private EventManager() throws EventManagerException {
        PropertyManager propertyManager;

        // 僾儘僷僥傿儅僱乕僕儍偺庢摼
        try {
            propertyManager = PropertyManager.getPropertyManager();
        } catch (PropertyManagerException e) {
            String message = null;
            try {
                message =
                    ResourceBundle
                        .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                        .getString("EventManager.FailedToGetPropertyManager");
            } catch (MissingResourceException ex) {
            }
            throw new EventManagerException(message, e);
        }

        // 僀儀儞僩僾儘僷僥傿僴儞僪儔偺庢摼
        try {
            this.eventPropertyHandler =
                (EventPropertyHandler)propertyManager.getPropertyHandler(
                    EVENT_PROPERTY_HANDLER_KEY);
        } catch (PropertyHandlerException e) {
            String message = null;
            try {
                message =
                    ResourceBundle
                        .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                        .getString("EventManager.FailedToGetEventPropertyHandler");
            } catch (MissingResourceException ex) {
            }
            throw new EventManagerException(
                message + " : " + EVENT_PROPERTY_HANDLER_KEY,
                e);
        }

        // 僀儀儞僩儕僗僫僼傽僋僩儕偺廤崌偺弶婜壔
        this.factories = new HashMap();
    }

    /**
     * 僀儀儞僩僾儘僷僥傿僴儞僪儔傪庢摼偟傑偡丅
     *
     * @return 僀儀儞僩僾儘僷僥傿僴儞僪儔
     */
    public EventPropertyHandler getEventPropertyHandler() {
        return this.eventPropertyHandler;
    }
    
    /**
     * 僷儔儊乕僞偱巜掕偝傟偨撪梕偵奩摉偡傞僀儀儞僩傪惗惉偟傑偡丅
     * 奩摉偡傞僀儀儞僩偑{@link EventPropertyHandler}偺僷儔儊乕僞偱愝掕偝傟偰偄側偄応崌丄{@link EmptyEvent}傪曉偟傑偡丅
     * 
     * @param application 傾僾儕働乕僔儑儞柤
     * @param key 僉乕
     * @param info 儘僌僀儞儐乕僓忣曬
     * @return 僷儔儊乕僞偵奩摉偡傞僀儀儞僩
     * @throws EventException 僀儀儞僩惗惉偵幐攕
     * @throws EventPropertyException 僀儀儞僩僾儘僷僥傿偺庢摼偵幐攕
     * @since 5.0
     */
    public Event createEvent(
            String application,
            String key,
            UserInfo info)
            throws EventPropertyException, EventException {
        String name = null;
        Object eventObject = null;
        Event event = null;

        // 巜掕偝傟偨傾僾儕働乕僔儑儞偲僉乕偐傜僀儀儞僩傪惗惉
        name = this.eventPropertyHandler.getEventName(application, key);
        if (name == null) {
            event = new EmptyEvent();
        } else {
            try {
                eventObject = Class.forName(name).newInstance();
            } catch (Exception e) {
                String message = null;
                try {
                    message =
                        ResourceBundle
                            .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                            .getString("EventManager.FailedToCreateEvent");
                } catch (MissingResourceException ex) {
                }
                throw new EventException(
                    message
                        + " : event class = "
                        + name
                        + ", application = "
                        + application
                        + ", key = "
                        + key,
                    e);
            }
            if (eventObject instanceof Event) {
                event = (Event)eventObject;
            } else {
                String message = null;
                try {
                    message =
                        ResourceBundle
                            .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                            .getString("EventManager.EventExtended");
                } catch (MissingResourceException ex) {
                }
                throw new EventException(
                    message
                        + " : event class = "
                        + name
                        + ", application = "
                        + application
                        + ", key = "
                        + key);
            }
        }

        // 傾僾儕働乕僔儑儞柤偲僉乕偺愝掕
        event.setApplication(application);
        event.setKey(key);
        event.setUserInfo(info);

        return event;
    }

    /**
     * 僷儔儊乕僞偱巜掕偝傟偨撪梕偵奩摉偡傞僀儀儞僩傪惗惉偟傑偡丅
     * 奩摉偡傞僀儀儞僩偑{@link EventPropertyHandler}偺僷儔儊乕僞偱愝掕偝傟偰偄側偄応崌丄{@link EmptyEvent}傪曉偟傑偡丅
     *
     * @param application 傾僾儕働乕僔儑儞柤
     * @param key 僉乕
     * @param loginUser 儘僌僀儞儐乕僓
     * @param loginGroup 儘僌僀儞僌儖乕僾
     * @return 僷儔儊乕僞偵奩摉偡傞僀儀儞僩
     * @throws EventException 僀儀儞僩惗惉偵幐攕
     * @throws EventPropertyException 僀儀儞僩僾儘僷僥傿偺庢摼偵幐攕
     * @deprecated 偙偺儊僜僢僪偱偼側偔{@link #createEvent(String, String, UserInfo)}傪巊梡偟偰偔偩偝偄丅
     */
    public Event createEvent(
        String application,
        String key,
        String loginUser,