root / branches / v2_0_0_prep / libraries / libFMap_data / src / org / gvsig / fmap / data / ResourceManager.java @ 23178
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| 1 | 21911 | jmvivo | package org.gvsig.fmap.data; |
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| 2 | 19399 | vcaballero | |
| 3 | 20580 | jmvivo | import java.security.KeyException; |
| 4 | import java.util.HashMap; |
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| 5 | 20624 | jmvivo | import java.util.Iterator; |
| 6 | 20580 | jmvivo | import java.util.Map; |
| 7 | 19399 | vcaballero | |
| 8 | 23066 | jmvivo | import org.gvsig.tools.observer.DefaultObservable; |
| 9 | import org.gvsig.tools.observer.Observable; |
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| 10 | import org.gvsig.tools.observer.Observer; |
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| 11 | 19399 | vcaballero | |
| 12 | 20580 | jmvivo | |
| 13 | 21045 | jmvivo | public class ResourceManager implements Observable{ |
| 14 | 20580 | jmvivo | |
| 15 | 19399 | vcaballero | private static ResourceManager resourceManager = null; |
| 16 | |||
| 17 | 20580 | jmvivo | private Map resources = new HashMap(); |
| 18 | 19608 | jmvivo | |
| 19 | 21045 | jmvivo | private DefaultObservable observers = new DefaultObservable(); |
| 20 | 20580 | jmvivo | |
| 21 | 19399 | vcaballero | public static ResourceManager getResourceManager() { |
| 22 | if( resourceManager == null ) { |
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| 23 | resourceManager = new ResourceManager();
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| 24 | } |
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| 25 | return resourceManager;
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| 26 | } |
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| 27 | 19608 | jmvivo | |
| 28 | 20624 | jmvivo | public synchronized Resource addResource(Resource resource) throws DataException { |
| 29 | 19399 | vcaballero | // Busca si el recurso no esta y de
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| 30 | // ser asi lo añade.
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| 31 | // En todo caso incrementa las referencias.
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| 32 | 19608 | jmvivo | |
| 33 | 20580 | jmvivo | Resource res = (Resource)this.resources.get(resource.getKey());
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| 34 | if (res == null){ |
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| 35 | res = resource; |
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| 36 | this.resources.put(res.getKey(), res);
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| 37 | res.addObservers(this.observers);
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| 38 | 23178 | vcaballero | res.prepare(); |
| 39 | 20580 | jmvivo | } |
| 40 | res.incref(); |
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| 41 | |||
| 42 | return res;
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| 43 | 19399 | vcaballero | } |
| 44 | 19608 | jmvivo | |
| 45 | 20624 | jmvivo | public synchronized void remove(Resource resource) throws KeyException, DataException { |
| 46 | 20580 | jmvivo | remove(resource.getKey()); |
| 47 | } |
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| 48 | |||
| 49 | 20624 | jmvivo | public synchronized void remove(String key) throws KeyException, DataException { |
| 50 | Resource res = (Resource)this.resources.get(key);
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| 51 | if (res == null){ |
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| 52 | throw new KeyException(key); |
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| 53 | } |
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| 54 | res.unref(); |
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| 55 | if (res.getRefencesCount() < 1){ |
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| 56 | this.resources.remove(key);
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| 57 | res.dispose(); |
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| 58 | } |
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| 59 | res = null;
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| 60 | 19608 | jmvivo | |
| 61 | 19399 | vcaballero | } |
| 62 | |||
| 63 | 20580 | jmvivo | public Resource getResource(String key){ |
| 64 | return (Resource)this.resources.get(key); |
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| 65 | } |
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| 66 | 19608 | jmvivo | |
| 67 | 20624 | jmvivo | public Iterator iterator(){ |
| 68 | return this.resources.values().iterator(); |
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| 69 | } |
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| 70 | |||
| 71 | 20580 | jmvivo | /* (non-Javadoc)
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| 72 | 21911 | jmvivo | * @see org.gvsig.fmap.data.IObservable#addObserver(org.gvsig.fmap.data.IObserver)
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| 73 | 20580 | jmvivo | */
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| 74 | 21045 | jmvivo | public void addObserver(Observer o) { |
| 75 | 20580 | jmvivo | this.observers.addObserver(o);
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| 76 | 19608 | jmvivo | } |
| 77 | |||
| 78 | 20580 | jmvivo | /* (non-Javadoc)
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| 79 | 21911 | jmvivo | * @see org.gvsig.fmap.data.IObservable#deleteObserver(org.gvsig.fmap.data.IObserver)
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| 80 | 20580 | jmvivo | */
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| 81 | 21045 | jmvivo | public void deleteObserver(Observer o) { |
| 82 | 20580 | jmvivo | this.observers.deleteObserver(o);
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| 83 | } |
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| 84 | |||
| 85 | /* (non-Javadoc)
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| 86 | 21911 | jmvivo | * @see org.gvsig.fmap.data.IObservable#deleteObservers()
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| 87 | 20580 | jmvivo | */
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| 88 | public void deleteObservers() { |
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| 89 | this.observers.deleteObservers();
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| 90 | } |
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| 91 | |||
| 92 | 19399 | vcaballero | } |