svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.api / src / main / java / org / gvsig / fmap / dal / DALLocator.java @ 40435
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1 | 40435 | jjdelcerro | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | */
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22 | |||
23 | /*
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24 | * AUTHORS (In addition to CIT):
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25 | * 2008 IVER T.I. S.A. {{Task}}
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26 | */
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27 | package org.gvsig.fmap.dal; |
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28 | |||
29 | import org.gvsig.fmap.dal.resource.ResourceManager; |
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30 | import org.gvsig.tools.locator.AbstractLocator; |
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31 | import org.gvsig.tools.locator.Locator; |
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32 | import org.gvsig.tools.locator.LocatorException; |
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33 | |||
34 | /**
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35 | *
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36 | * This locator is the entry point of gvSIG's DAL, providing access to all DAL services.
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37 | * DAL services are grouped in two managers {@link DataManager} and {@link ResourceManager}.
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38 | *
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39 | * This locator offers methods for registering as well as for obtaining both managers' unique instances.
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40 | *
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41 | * @see Locator
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42 | */
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43 | public class DALLocator extends AbstractLocator { |
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44 | |||
45 | private static final String LOCATOR_NAME = "DALLocator"; |
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46 | |||
47 | /**
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48 | * DataManager name used by the locator to access the instance
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49 | */
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50 | public static final String DATA_MANAGER_NAME = "DataManager"; |
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51 | |||
52 | private static final String DATA_MANAGER_DESCRIPTION = "DataManager of gvSIG Data Access Library"; |
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53 | |||
54 | /**
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55 | * ResourceManager name used by the locator to access the instance
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56 | */
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57 | public static final String RESOURCE_MANAGER_NAME = "ResourceManager"; |
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58 | |||
59 | private static final String RESOURCE_MANAGER_DESCRIPTION = "ResourceManager of gvSIG Data Access Library"; |
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60 | |||
61 | /**
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62 | * Unique instance.
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63 | */
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64 | private static final DALLocator instance = new DALLocator(); |
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65 | |||
66 | /**
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67 | * Return the singleton instance.
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68 | *
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69 | * @return the singleton instance
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70 | */
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71 | public static DALLocator getInstance() { |
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72 | return instance;
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73 | } |
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74 | |||
75 | /**
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76 | * Returns the Locator name.
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77 | *
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78 | * @return String containing the locator name.
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79 | */
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80 | public String getLocatorName() { |
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81 | return LOCATOR_NAME;
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82 | } |
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83 | |||
84 | /**
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85 | * Return a reference to DataManager.
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86 | *
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87 | * @return a reference to DataManager
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88 | * @throws LocatorException
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89 | * if there is no access to the class or the class cannot be
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90 | * instantiated
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91 | * @see Locator#get(String)
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92 | */
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93 | public static DataManager getDataManager() throws LocatorException { |
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94 | return (DataManager) getInstance().get(DATA_MANAGER_NAME);
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95 | } |
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96 | |||
97 | /**
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98 | * Registers the Class implementing the DataManager interface.
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99 | *
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100 | * @param clazz
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101 | * implementing the DataManager interface
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102 | */
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103 | public static void registerDataManager(Class clazz) { |
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104 | getInstance().register(DATA_MANAGER_NAME, DATA_MANAGER_DESCRIPTION, |
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105 | clazz); |
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106 | } |
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107 | |||
108 | /**
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109 | * Registers a class as the default DataManager.
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110 | *
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111 | * @param clazz
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112 | * implementing the DataManager interface
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113 | */
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114 | public static void registerDefaultDataManager(Class clazz) { |
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115 | getInstance().registerDefault(DATA_MANAGER_NAME, DATA_MANAGER_DESCRIPTION, |
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116 | clazz); |
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117 | } |
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118 | |||
119 | /**
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120 | * Return a reference to ResourceManager.
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121 | *
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122 | * @return a reference to ResourceManager
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123 | * @throws LocatorException
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124 | * if there is no access to the class or the class cannot be
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125 | * instantiated
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126 | * @see Locator#get(String)
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127 | */
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128 | public static ResourceManager getResourceManager() throws LocatorException { |
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129 | return (ResourceManager) getInstance().get(RESOURCE_MANAGER_NAME);
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130 | } |
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131 | |||
132 | /**
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133 | * Registers the Class implementing the MDManager interface.
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134 | *
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135 | * @param clazz
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136 | * implementing the MDManager interface
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137 | */
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138 | public static void registerResourceManager(Class clazz) { |
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139 | getInstance().register(RESOURCE_MANAGER_NAME, |
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140 | RESOURCE_MANAGER_DESCRIPTION, clazz); |
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141 | } |
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142 | |||
143 | } |