com.medigy.persist.EntitySaveListener.java Source code

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Here is the source code for com.medigy.persist.EntitySaveListener.java

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/*
 * Copyright (c) 2000-2003 Netspective Communications LLC. All rights reserved.
 *
 * Netspective Communications LLC ("Netspective") permits redistribution, modification and use of this file in source
 * and binary form ("The Software") under the Netspective Source License ("NSL" or "The License"). The following
 * conditions are provided as a summary of the NSL but the NSL remains the canonical license and must be accepted
 * before using The Software. Any use of The Software indicates agreement with the NSL.
 *
 * 1. Each copy or derived work of The Software must preserve the copyright notice and this notice unmodified.
 *
 * 2. Redistribution of The Software is allowed in object code form only (as Java .class files or a .jar file
 *    containing the .class files) and only as part of an application that uses The Software as part of its primary
 *    functionality. No distribution of the package is allowed as part of a software development kit, other library,
 *    or development tool without written consent of Netspective. Any modified form of The Software is bound by these
 *    same restrictions.
 *
 * 3. Redistributions of The Software in any form must include an unmodified copy of The License, normally in a plain
 *    ASCII text file unless otherwise agreed to, in writing, by Netspective.
 *
 * 4. The names "Netspective", "Axiom", "Commons", "Junxion", and "Sparx" are trademarks of Netspective and may not be
 *    used to endorse products derived from The Software without without written consent of Netspective. "Netspective",
 *    "Axiom", "Commons", "Junxion", and "Sparx" may not appear in the names of products derived from The Software
 *    without written consent of Netspective.
 *
 * 5. Please attribute functionality where possible. We suggest using the "powered by Netspective" button or creating
 *    a "powered by Netspective(tm)" link to http://www.netspective.com for each application using The Software.
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 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT,
 * ARE HEREBY DISCLAIMED.
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 * NETSPECTIVE AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE OR ANY THIRD PARTY AS A
 * RESULT OF USING OR DISTRIBUTING THE SOFTWARE. IN NO EVENT WILL NETSPECTIVE OR ITS LICENSORS BE LIABLE FOR ANY LOST
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package com.medigy.persist;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Session;
import org.hibernate.event.PostInsertEvent;
import org.hibernate.event.PostInsertEventListener;

import javax.persistence.EntityManager;
import java.io.Serializable;
import java.util.Stack;

public class EntitySaveListener implements PostInsertEventListener {
    private static final Log log = LogFactory.getLog(EntitySaveListener.class);

    private Stack entityList = new Stack();

    public void onPostInsert(PostInsertEvent event) {
        final Serializable id = event.getId();
        final Class<? extends Object> entityClass = event.getEntity().getClass();

        // Unable to use the entity object itself because if an update was done to that entity in another session,
        // this instance was no longer valid to be reconnected to the session and I don't know how to get around it. AT
        //final Object entity = event.getEntity();
        entityList.push(new EntityInfo(entityClass, id));
        if (log.isInfoEnabled())
            log.info("Registering... " + entityClass + " - " + id);
    }

    public Stack getEntityList() {
        return entityList;
    }

    public void newEntityList() {
        entityList = new Stack();
    }

    public void deleteEntityList(final Session session) {
        while (!entityList.empty()) {
            final EntityInfo obj = (EntityInfo) entityList.pop();
            if (log.isInfoEnabled())
                log.info("Deleteing... " + obj.getEntityClass() + ". (id = " + obj.getId() + ")\n");
            final Object entity = session.get(obj.getEntityClass(), obj.getId());
            if (entity != null)
                session.delete(entity);
        }
    }

    public void deleteEntityList(final EntityManager manager) {
        while (!entityList.empty()) {
            final EntityInfo obj = (EntityInfo) entityList.pop();
            if (log.isInfoEnabled())
                log.info("Deleteing... " + obj.getEntityClass() + ". (id = " + obj.getId() + ")\n");
            final Object entity = manager.find(obj.getEntityClass(), obj.getId());
            if (entity != null)
                manager.remove(entity);
        }
    }

    public class EntityInfo {
        private Serializable id;
        private Class entityClass;

        public EntityInfo(final Class entityClass, final Serializable id) {
            this.entityClass = entityClass;
            this.id = id;
        }

        public Class getEntityClass() {
            return entityClass;
        }

        public Serializable getId() {
            return id;
        }
    }

}