eventtriggerlist.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

/*
 * EventTriggerList.java
 *
 * Created on 2001/12/04, 16:08
 */

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

import java.util.Collection;
import java.util.Iterator;
import java.util.ResourceBundle;
import java.util.Vector;

import jp.co.intra_mart.framework.base.data.DataAccessController;

import java.util.MissingResourceException;

import jp.co.intra_mart.framework.system.exception.SystemException;
import jp.co.intra_mart.framework.system.exception.ApplicationException;

/**
 * 僀儀儞僩僩儕僈偺廤崌傪埖偄傑偡丅
 * 僀儀儞僩僩儕僈偺惗惉偟丄弴斣偵幚峴偟傑偡丅
 *
 * @author INTRAMART
 * @version 1.0
 */
public class EventTriggerList {

    /** 僀儀儞僩僩儕僈偺廤崌 */
    private Collection triggers;

    /** 僨乕僞傾僋僙僗僐儞僩儘乕儔 */
    private DataAccessController dataAccessController;

    /**
     * EventTriggerList傪怴婯偵惗惉偟傑偡丅
     * 偙偺僐儞僗僩儔僋僞偱偼僀儀儞僩偺慜偵張棟偡傞EventTriggerList傪惗惉偟傑偡丅
     * 偙偺僐儞僗僩儔僋僞偼{@link #EventTriggerList(String, String, boolean) Event(application, key, true)}
     * 偲摨偠寢壥偲側傝傑偡丅
     *
     * @param application 傾僾儕働乕僔儑儞柤
     * @param key 僉乕
     * @throws EventManagerException EventManager惗惉帪偵椺奜偑敪惗偟偨
     * @throws EventPropertyException 僀儀儞僩僾儘僷僥傿偺庢摼帪偵椺奜偑敪惗偟偨
     * @throws EventTriggerException 僀儀儞僩僩儕僈惗惉帪偵椺奜偑敪惗偟偨
     */
    public EventTriggerList(String application, String key)
        throws EventManagerException, EventPropertyException, EventTriggerException {

        this(application, key, true);
    }

    /**
     * EventTriggerList傪怴婯偵惗惉偟傑偡丅
     * <code>pre</code>偵傛偭偰僀儀儞僩偺慜偵張棟偝傟傞僀儀儞僩僩儕僈偱偁傞偐
     * 僀儀儞僩偺屻偵張棟偝傟傞僀儀儞僩僩儕僈偱偁傞偐傪巜掕偟傑偡丅
     *
     * @param application 傾僾儕働乕僔儑儞柤
     * @param key 僉乕
     * @param pre true:僀儀儞僩偺慜偵婲摦偡傞僀儀儞僩僩儕僈丄false:僀儀儞僩偺屻偵婲摦偡傞僀儀儞僩僩儕僈
     * @throws EventManagerException EventManager惗惉帪偵椺奜偑敪惗偟偨
     * @throws EventPropertyException 僀儀儞僩僾儘僷僥傿偺庢摼帪偵椺奜偑敪惗偟偨
     * @throws EventTriggerException 僀儀儞僩僩儕僈惗惉帪偵椺奜偑敪惗偟偨
     * @since 4.3
     */
    public EventTriggerList(String application, String key, boolean pre)
        throws EventManagerException, EventPropertyException, EventTriggerException {

        Iterator triggerInfos = null;
        Object triggerObject = null;
        EventTrigger trigger = null;
        EventTriggerInfo currentInfo = null;

        // 僀儀儞僩僩儕僈忣曬偺庢摼
        if (pre) {
            triggerInfos =
                EventManager
                    .getEventManager()
                    .getEventPropertyHandler()
                    .getEventTriggerInfos(application, key)
                    .iterator();
        } else {
            triggerInfos =
                EventManager
                    .getEventManager()
                    .getEventPropertyHandler()
                    .getPostEventTriggerInfos(application, key)
                    .iterator();
        }

        // 僀儀儞僩僩儕僈偺廤崌偺弶婜壔
        this.triggers = new Vector();
        while (triggerInfos.hasNext()) {
            currentInfo = (EventTriggerInfo)triggerInfos.next();

            // 僀儀儞僩僩儕僈傪怴婯偵惗惉偡傞
            try {
                triggerObject =
                    Class.forName(currentInfo.getName()).newInstance();
            } catch (Exception e) {
                String message = null;
                try {
                    message =
                        ResourceBundle
                            .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                            .getString("EventTriggerList.FailedToCreateTrigger");
                } catch (MissingResourceException ex) {
                }
                throw new EventTriggerException(
                    message
                        + " : trigger class = "
                        + currentInfo.getName()
                        + ", application = "
                        + application
                        + ", key = "
                        + key,
                    e);
            }
            if (triggerObject instanceof EventTrigger) {
                trigger = (EventTrigger)triggerObject;
            } else {
                String message = null;
                try {
                    message =
                        ResourceBundle
                            .getBundle("jp.co.intra_mart.framework.base.event.i18n")
                            .getString("EventTriggerList.TriggerImplemented");
                } catch (MissingResourceException e) {
                }
                throw new EventTriggerException(
                    message
                        + " : trigger class = "
                        + currentInfo.getName()
                        + ", application = "
                        + application
                        + ", key = "
                        + key);
            }

            // 惗惉偟偨僀儀儞僩僩儕僈傪廤崌偺嵟屻旜偵捛壛偡傞
            this.triggers.add(trigger);
        }
    }

    /**
     * 偡傋偰偺僩儕僈偵懳偟偰僀儀儞僩偺張棟傪峴偄傑偡丅
     *
     * @param event 僀儀儞僩
     * @param controller 僨乕僞傾僋僙僗僐儞僩儘乕儔
     * @throws SystemException 僔僗僥儉椺奜偑敪惗偟偨
     * @throws ApplicationException 傾僾儕働乕僔儑儞椺奜偑敪惗偟偨
     */
    public void fireAll(Event event, DataAccessController controller)
        throws SystemException, ApplicationException {

        Iterator triggerIterator;
        EventTrigger currentTrigger;

        // 僀儀儞僩僩儕僈偑愝掕偝傟偰偄側偄応崌丄壗傕偟側偄
        if (this.triggers == null) {
            return;
        }

        // 僀儀儞僩僩儕僈偑愝掕偝傟偰偄傞応崌
        triggerIterator = this.triggers.iterator();
        while (triggerIterator.hasNext()) {
            currentTrigger = (EventTrigger)triggerIterator.next();
            currentTrigger.fire(event, controller);
        }
    }
}