Mercurial > dive4elements > framework
comparison artifact-database/src/main/java/de/intevation/artifactdatabase/state/FacetActivity.java @ 436:15179c77aa1d flys-2.9.3
Documentation, so that readers know a tiny bit more what is going on.
| author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
|---|---|
| date | Tue, 16 Oct 2012 15:08:43 +0200 |
| parents | e1738650bfca |
| children | f3bf22423c95 |
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| 435:e39e23320a23 | 436:15179c77aa1d |
|---|---|
| 5 import java.util.ArrayList; | 5 import java.util.ArrayList; |
| 6 import java.util.HashMap; | 6 import java.util.HashMap; |
| 7 import java.util.List; | 7 import java.util.List; |
| 8 import java.util.Map; | 8 import java.util.Map; |
| 9 | 9 |
| 10 | |
| 11 /** Magical system. */ | |
| 10 public interface FacetActivity | 12 public interface FacetActivity |
| 11 { | 13 { |
| 14 /** Static 'activity' that lets all facets be active. */ | |
| 12 public static final FacetActivity ACTIVE = new FacetActivity() { | 15 public static final FacetActivity ACTIVE = new FacetActivity() { |
| 13 @Override | 16 @Override |
| 14 public Boolean isInitialActive( | 17 public Boolean isInitialActive( |
| 15 Artifact artifact, | 18 Artifact artifact, |
| 16 Facet facet, | 19 Facet facet, |
| 18 ) { | 21 ) { |
| 19 return Boolean.TRUE; | 22 return Boolean.TRUE; |
| 20 } | 23 } |
| 21 }; | 24 }; |
| 22 | 25 |
| 26 /** Static 'activity' that lets all facets be inactive. */ | |
| 23 public static final FacetActivity INACTIVE = new FacetActivity() { | 27 public static final FacetActivity INACTIVE = new FacetActivity() { |
| 24 @Override | 28 @Override |
| 25 public Boolean isInitialActive( | 29 public Boolean isInitialActive( |
| 26 Artifact artifact, | 30 Artifact artifact, |
| 27 Facet facet, | 31 Facet facet, |
| 31 } | 35 } |
| 32 }; | 36 }; |
| 33 | 37 |
| 34 Boolean isInitialActive(Artifact artifact, Facet facet, String output); | 38 Boolean isInitialActive(Artifact artifact, Facet facet, String output); |
| 35 | 39 |
| 40 /** Singleton registry, that maps artifact names to the activities, which | |
| 41 * decide whether or not a facet should be (initially) active. */ | |
| 36 public static final class Registry { | 42 public static final class Registry { |
| 37 | 43 |
| 44 /** Singleton instance. */ | |
| 38 private static final Registry INSTANCE = new Registry(); | 45 private static final Registry INSTANCE = new Registry(); |
| 39 | 46 |
| 40 private Map<String, List<FacetActivity>> activities; | 47 private Map<String, List<FacetActivity>> activities; |
| 41 | 48 |
| 49 /** Private singleton constructor for the Facet-Activity-Registry. */ | |
| 42 private Registry() { | 50 private Registry() { |
| 43 activities = new HashMap<String, List<FacetActivity>>(); | 51 activities = new HashMap<String, List<FacetActivity>>(); |
| 44 } | 52 } |
| 45 | 53 |
| 54 /** Access Singleton instance. */ | |
| 46 public static Registry getInstance() { | 55 public static Registry getInstance() { |
| 47 return INSTANCE; | 56 return INSTANCE; |
| 48 } | 57 } |
| 49 | 58 |
| 59 /** Queries whether a given facet should be active or not. */ | |
| 50 public synchronized boolean isInitialActive( | 60 public synchronized boolean isInitialActive( |
| 51 String key, | 61 String key, |
| 52 Artifact artifact, | 62 Artifact artifact, |
| 53 Facet facet, | 63 Facet facet, |
| 54 String output | 64 String output |