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A complete JPA 2.1 implementation for Standalone or EE Implementation. Enables Multiple Persistence units with full JTA Support using BTM. Perfect for Guice implementations, test suites, and Guice enabled Web Applications or EAR Projects. Requires JDK 8

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package com.guicedee.guicedpersistence.implementations;

import com.google.inject.persist.PersistService;
import com.guicedee.guicedinjection.GuiceContext;
import com.guicedee.guicedinjection.interfaces.IGuicePostStartup;
import com.guicedee.guicedinjection.interfaces.JobService;
import com.guicedee.guicedpersistence.services.PersistenceServicesModule;
import com.guicedee.logger.LogFactory;

import javax.persistence.EntityManager;
import java.util.logging.Level;

public class EntityManagerPostStartup
		implements IGuicePostStartup
{
	private static boolean blocking = true;
	private static boolean startPersistenceServices = true;

	@Override
	public void postLoad()
	{
		if(startPersistenceServices) {
			LogFactory.getLog(EntityManagerPostStartup.class)
					.log(Level.CONFIG, "Starting up Entity Managers");
			if(blocking) {
				PersistenceServicesModule.getModules()
						.entrySet()
						.parallelStream()
						.forEach(entry ->
								{
									PersistService ps = GuiceContext.get(PersistService.class, entry.getKey());
									ps.start();
									LogFactory.getLog(EntityManagerPostStartup.class)
											.log(Level.CONFIG, "Started " + entry);
								}
						);
			}else
			{
				PersistenceServicesModule.getModules().forEach((key,value)->{
					JobService.getInstance().addJob("DatabaseStartups",()->{
						PersistService ps = GuiceContext.get(PersistService.class, key);
						ps.start();
						LogFactory.getLog(EntityManagerPostStartup.class)
								.log(Level.CONFIG, "Started " + key);
					});
				});
			}
		}
	}

	/**
	 * If loading the entity managers should block the load
	 *
	 */
	public static boolean isBlocking() {
		return blocking;
	}

	/**
	 * If the service starting should block the load sequence
	 * @param blocking
	 */
	public static void setBlocking(boolean blocking) {
		EntityManagerPostStartup.blocking = blocking;
	}

	/**
	 * If the persistence services should start on boot, or when you want them too
	 */
	public static boolean isStartPersistenceServices() {
		return startPersistenceServices;
	}

	/**
	 * If the persistence services should start on boot, or when you want them too
	 * @param startPersistenceServices default true
	 */
	public static void setStartPersistenceServices(boolean startPersistenceServices) {
		EntityManagerPostStartup.startPersistenceServices = startPersistenceServices;
	}

	@Override
	public Integer sortOrder()
	{
		return Integer.MIN_VALUE + 500;
	}
}