Mercurial > dive4elements > framework
comparison artifact-database/src/main/java/de/intevation/artifactdatabase/LazyBackendUser.java @ 165:81ad657569e1
Added Helper for lazy loading users.
artifacts/trunk@1390 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Thu, 03 Mar 2011 14:30:21 +0000 |
| parents | |
| children | 16cd059945e5 |
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| 164:268c2972d4a7 | 165:81ad657569e1 |
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| 1 /* | |
| 2 * Copyright (c) 2011 by Intevation GmbH | |
| 3 * | |
| 4 * This program is free software under the LGPL (>=v2.1) | |
| 5 * Read the file LGPL.txt coming with the software for details | |
| 6 * or visit http://www.gnu.org/licenses/ if it does not exist. | |
| 7 */ | |
| 8 package de.intevation.artifactdatabase; | |
| 9 | |
| 10 import de.intevation.artifacts.User; | |
| 11 import de.intevation.artifacts.UserFactory; | |
| 12 | |
| 13 import org.w3c.dom.Document; | |
| 14 | |
| 15 public class LazyBackendUser | |
| 16 implements User | |
| 17 { | |
| 18 protected UserFactory factory; | |
| 19 protected Backend backend; | |
| 20 protected String identifier; | |
| 21 protected User user; | |
| 22 protected Object context; | |
| 23 | |
| 24 public LazyBackendUser( | |
| 25 String identifier, | |
| 26 UserFactory factory, | |
| 27 Backend backend, | |
| 28 Object context | |
| 29 ) { | |
| 30 this.identifier = identifier; | |
| 31 this.factory = factory; | |
| 32 this.backend = backend; | |
| 33 this.context = context; | |
| 34 } | |
| 35 | |
| 36 protected User getUser() { | |
| 37 if (user == null) { | |
| 38 user = backend.getUser(identifier, factory, context); | |
| 39 if (user == null) { | |
| 40 throw new IllegalStateException("loading user failed"); | |
| 41 } | |
| 42 } | |
| 43 return user; | |
| 44 } | |
| 45 | |
| 46 public String identifier() { | |
| 47 return getUser().identifier(); | |
| 48 } | |
| 49 | |
| 50 public String getName() { | |
| 51 return getUser().getName(); | |
| 52 } | |
| 53 | |
| 54 public void setName(String name) { | |
| 55 getUser().setName(name); | |
| 56 } | |
| 57 | |
| 58 public void setIdentifier(String identifier) { | |
| 59 getUser().setIdentifier(identifier); | |
| 60 } | |
| 61 | |
| 62 public Document getRole() { | |
| 63 return getUser().getRole(); | |
| 64 } | |
| 65 | |
| 66 public void setRole(Document document) { | |
| 67 getUser().setRole(document); | |
| 68 } | |
| 69 } | |
| 70 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |