Mercurial > lada > lada-server

annotate src/main/java/de/intevation/lada/util/data/EntityManagerProducer.java @ 438:f0ad10e0e1b1

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