root / branches / v2_0_0_prep / libraries / libFMap_dal / src / org / gvsig / fmap / dal / DALLocator.java @ 24496
History | View | Annotate | Download (3.16 KB)
1 | 24496 | jmvivo | package org.gvsig.fmap.dal; |
---|---|---|---|
2 | 23754 | jjdelcerro | |
3 | 24496 | jmvivo | import org.gvsig.fmap.dal.resource.ResourceManager; |
4 | 23754 | jjdelcerro | import org.gvsig.tools.locator.AbstractLocator; |
5 | import org.gvsig.tools.locator.Locator; |
||
6 | import org.gvsig.tools.locator.LocatorException; |
||
7 | |||
8 | 24366 | jiyarza | /**
|
9 | * @see {@link Locator}
|
||
10 | *
|
||
11 | * This locator is the entry point of gvSIG's DAL, providing access to all DAL services.
|
||
12 | * DAL services are grouped in two managers {@link DataManager} and {@link ResourceManager}.
|
||
13 | *
|
||
14 | * This locator offers methods for registering as well as for obtaining both managers' unique instances.
|
||
15 | *
|
||
16 | */
|
||
17 | 23754 | jjdelcerro | public class DALLocator extends AbstractLocator { |
18 | |||
19 | private static final String LOCATOR_NAME = "DALLocator"; |
||
20 | |||
21 | 24366 | jiyarza | /**
|
22 | * DataManager name used by the locator to access the instance
|
||
23 | */
|
||
24 | 23754 | jjdelcerro | public static final String DATA_MANAGER_NAME = "DataManager"; |
25 | |||
26 | private static final String DATA_MANAGER_DESCRIPTION = "DataManager of gvSIG Data Access Library"; |
||
27 | |||
28 | 24366 | jiyarza | /**
|
29 | * ResourceManager name used by the locator to access the instance
|
||
30 | */
|
||
31 | 23754 | jjdelcerro | public static final String RESOURCE_MANAGER_NAME = "ResourceManager"; |
32 | |||
33 | private static final String RESOURCE_MANAGER_DESCRIPTION = "ResourceManager of gvSIG Data Access Library"; |
||
34 | |||
35 | /**
|
||
36 | * Unique instance.
|
||
37 | */
|
||
38 | private static final DALLocator instance = new DALLocator(); |
||
39 | |||
40 | /**
|
||
41 | * Return the singleton instance.
|
||
42 | *
|
||
43 | * @return the singleton instance
|
||
44 | */
|
||
45 | public static DALLocator getInstance() { |
||
46 | return instance;
|
||
47 | } |
||
48 | |||
49 | 24366 | jiyarza | /**
|
50 | * Returns the Locator name.
|
||
51 | *
|
||
52 | * @return String containing the locator name.
|
||
53 | */
|
||
54 | 23754 | jjdelcerro | public String getLocatorName() { |
55 | return LOCATOR_NAME;
|
||
56 | } |
||
57 | |||
58 | /**
|
||
59 | * Return a reference to DataManager.
|
||
60 | *
|
||
61 | * @return a reference to DataManager
|
||
62 | * @throws LocatorException
|
||
63 | * if there is no access to the class or the class cannot be
|
||
64 | * instantiated
|
||
65 | * @see Locator#get(String)
|
||
66 | */
|
||
67 | public static DataManager getDataManager() throws LocatorException { |
||
68 | return (DataManager) getInstance().get(DATA_MANAGER_NAME);
|
||
69 | } |
||
70 | |||
71 | /**
|
||
72 | * Registers the Class implementing the DataManager interface.
|
||
73 | *
|
||
74 | * @param clazz
|
||
75 | * implementing the DataManager interface
|
||
76 | */
|
||
77 | public static void registerDataManager(Class clazz) { |
||
78 | getInstance().register(DATA_MANAGER_NAME, DATA_MANAGER_DESCRIPTION, |
||
79 | clazz); |
||
80 | } |
||
81 | 24130 | jiyarza | |
82 | 24366 | jiyarza | /**
|
83 | * Registers a class as the default DataManager.
|
||
84 | *
|
||
85 | * @param clazz
|
||
86 | * implementing the DataManager interface
|
||
87 | */
|
||
88 | 24130 | jiyarza | public static void registerDefaultDataManager(Class clazz) { |
89 | getInstance().registerDefault(DATA_MANAGER_NAME, DATA_MANAGER_DESCRIPTION, |
||
90 | clazz); |
||
91 | } |
||
92 | 23754 | jjdelcerro | |
93 | /**
|
||
94 | * Return a reference to ResourceManager.
|
||
95 | *
|
||
96 | * @return a reference to ResourceManager
|
||
97 | * @throws LocatorException
|
||
98 | * if there is no access to the class or the class cannot be
|
||
99 | * instantiated
|
||
100 | * @see Locator#get(String)
|
||
101 | */
|
||
102 | public static ResourceManager getResourceManager() throws LocatorException { |
||
103 | return (ResourceManager) getInstance().get(RESOURCE_MANAGER_NAME);
|
||
104 | } |
||
105 | |||
106 | /**
|
||
107 | * Registers the Class implementing the MDManager interface.
|
||
108 | *
|
||
109 | * @param clazz
|
||
110 | * implementing the MDManager interface
|
||
111 | */
|
||
112 | public static void registerResourceManager(Class clazz) { |
||
113 | getInstance().register(RESOURCE_MANAGER_NAME, |
||
114 | RESOURCE_MANAGER_DESCRIPTION, clazz); |
||
115 | } |
||
116 | |||
117 | } |