Mercurial > lada > lada-server
comparison src/main/java/de/intevation/lada/util/data/EntityManagerProducer.java @ 438:f0ad10e0e1b1
Moved Repositories, etc. into data package.
| author | Raimund Renkert <raimund.renkert@intevation.de> |
|---|---|
| date | Fri, 06 Feb 2015 17:55:54 +0100 |
| parents | |
| children | 3ec358698b4d |
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| 437:5011173fd340 | 438:f0ad10e0e1b1 |
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| 1 /* Copyright (C) 2013 by Bundesamt fuer Strahlenschutz | |
| 2 * Software engineering by Intevation GmbH | |
| 3 * | |
| 4 * This file is Free Software under the GNU GPL (v>=3) | |
| 5 * and comes with ABSOLUTELY NO WARRANTY! Check out | |
| 6 * the documentation coming with IMIS-Labordaten-Application for details. | |
| 7 */ | |
| 8 package de.intevation.lada.util.data; | |
| 9 | |
| 10 import javax.annotation.Resource; | |
| 11 import javax.ejb.LocalBean; | |
| 12 import javax.ejb.SessionContext; | |
| 13 import javax.ejb.Stateless; | |
| 14 import javax.persistence.EntityManager; | |
| 15 import javax.validation.UnexpectedTypeException; | |
| 16 | |
| 17 | |
| 18 @Stateless | |
| 19 @LocalBean | |
| 20 public class EntityManagerProducer { | |
| 21 | |
| 22 @Resource | |
| 23 private SessionContext ctx; | |
| 24 | |
| 25 private String jndiPath = "java:app/entitymanager/"; | |
| 26 | |
| 27 /** | |
| 28 * Constructor for multi-tenancy entity manager delegate. | |
| 29 * Default jndi search path is 'java:app/entitymanager'. | |
| 30 */ | |
| 31 public EntityManagerProducer() { | |
| 32 } | |
| 33 | |
| 34 /** | |
| 35 * Constructor for multi-tenancy entity manager delegate. | |
| 36 * | |
| 37 * @param jndiEnv The jndi path to search for datasources. | |
| 38 * Defaults to 'java:app/entitymanager'. | |
| 39 */ | |
| 40 public EntityManagerProducer(String jndiPath) { | |
| 41 this.jndiPath = jndiPath; | |
| 42 } | |
| 43 | |
| 44 /** | |
| 45 * Create an entity manager for a datasource. | |
| 46 * | |
| 47 * @throws UnexpectedTypeException | |
| 48 * @param dataSourceName The jndi name of the datasource. | |
| 49 * @return The entity manager for the datasource. | |
| 50 */ | |
| 51 public EntityManager entityManager(String dataSourceName) { | |
| 52 | |
| 53 EntityManager entityManager = | |
| 54 (EntityManager) this.ctx.lookup(this.jndiPath + dataSourceName); | |
| 55 | |
| 56 if (entityManager == null) { | |
| 57 throw new UnexpectedTypeException("Unknown data source name '" + | |
| 58 dataSourceName + "'."); | |
| 59 } | |
| 60 | |
| 61 return entityManager; | |
| 62 | |
| 63 } | |
| 64 } |