svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.mapcontext / org.gvsig.fmap.mapcontext.api / src / main / java / org / gvsig / fmap / mapcontext / layers / LayerFactory.java @ 43020
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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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 3
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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 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 40435 | jjdelcerro | package org.gvsig.fmap.mapcontext.layers; |
25 | |||
26 | import java.util.HashMap; |
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27 | import java.util.Iterator; |
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28 | import java.util.Map; |
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29 | import java.util.Map.Entry; |
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30 | |||
31 | import org.cresques.cts.IProjection; |
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32 | import org.gvsig.fmap.dal.DALLocator; |
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33 | import org.gvsig.fmap.dal.DataManager; |
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34 | import org.gvsig.fmap.dal.DataStore; |
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35 | import org.gvsig.fmap.dal.DataStoreParameters; |
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36 | import org.gvsig.fmap.dal.exception.InitializeException; |
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37 | import org.gvsig.fmap.dal.exception.ProviderNotRegisteredException; |
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38 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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39 | import org.gvsig.fmap.mapcontext.MapContextManager; |
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40 | import org.gvsig.fmap.mapcontext.exceptions.LoadLayerException; |
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41 | import org.gvsig.fmap.mapcontext.layers.operations.SingleLayer; |
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42 | |||
43 | /**
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44 | * Crea un adaptador del driver que se le pasa como par?metro en los m?todos
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45 | * createLayer. Si hay memoria suficiente se crea un FLyrMemory que pasa todas
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46 | * las features del driver a memoria
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47 | */
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48 | public class LayerFactory { |
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49 | // final static private Logger logger = LoggerFactory.getLogger(LayerFactory.class);
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50 | |||
51 | private static LayerFactory instance = null; |
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52 | |||
53 | |||
54 | |||
55 | public static LayerFactory getInstance() { |
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56 | if (instance == null) { |
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57 | instance = new LayerFactory();
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58 | } |
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59 | return instance;
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60 | } |
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61 | |||
62 | /**
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63 | * Guarda registro de que clase de capa debe usar para un determinado Store
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64 | *
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65 | * como clave usamos el nombre de registro del dataStore
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66 | */
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67 | private Map layersToUseForStore = new HashMap(); |
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68 | |||
69 | /**
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70 | * Registra que clase tiene que usar para un {@link DataStore} determinado. <br>
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71 | * Por defecto, si el
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72 | *
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73 | *
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74 | * @param dataStoreName
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75 | * Nombre de registro del {@link DataStore} dentro del
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76 | * {@link DataManager}
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77 | * @param layerClassToUse
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78 | * clase que implementa {@link SingleLayer}
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79 | * @return
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80 | */
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81 | |||
82 | public boolean registerLayerToUseForStore(String dataStoreName, |
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83 | Class layerClassToUse) {
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84 | |||
85 | DataManager dm = DALLocator.getDataManager(); |
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86 | DataStoreParameters dsparams; |
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87 | try {
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88 | dsparams = dm.createStoreParameters(dataStoreName); |
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89 | } catch (InitializeException e) {
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90 | e.printStackTrace(); |
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91 | return false; |
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92 | } catch (ProviderNotRegisteredException e) {
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93 | e.printStackTrace(); |
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94 | return false; |
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95 | } |
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96 | if (!layerClassToUse.isAssignableFrom(SingleLayer.class)) {
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97 | return false; |
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98 | } |
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99 | this.layersToUseForStore.put(dsparams.getDataStoreName(),
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100 | layerClassToUse); |
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101 | |||
102 | return true; |
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103 | } |
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104 | |||
105 | public boolean registerLayerToUseForStore(Class storeClass, |
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106 | Class layerClassToUse) {
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107 | |||
108 | // DataManager dm = DALLocator.getDataManager();
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109 | if (!DataStore.class.isAssignableFrom(storeClass)) {
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110 | return false; |
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111 | } |
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112 | |||
113 | if (!SingleLayer.class.isAssignableFrom(layerClassToUse)
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114 | || !FLayer.class.isAssignableFrom(layerClassToUse)) { |
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115 | return false; |
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116 | } |
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117 | this.layersToUseForStore.put(storeClass,
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118 | layerClassToUse); |
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119 | |||
120 | return true; |
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121 | } |
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122 | |||
123 | private Class getLayerClassFor(DataStore store) { |
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124 | Class result = (Class) this.layersToUseForStore.get(store.getName()); |
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125 | if (result == null) { |
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126 | Iterator iter = this.layersToUseForStore.entrySet().iterator(); |
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127 | Map.Entry entry;
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128 | Class key;
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129 | while (iter.hasNext()) {
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130 | entry = (Entry) iter.next(); |
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131 | if (entry.getKey() instanceof Class) { |
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132 | key = (Class) entry.getKey();
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133 | if (key.isAssignableFrom(store.getClass())) {
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134 | result = (Class) entry.getValue();
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135 | break;
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136 | } |
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137 | } |
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138 | } |
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139 | } |
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140 | return result;
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141 | |||
142 | } |
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143 | |||
144 | |||
145 | |||
146 | /**
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147 | * @deprecated to be removed in gvSIG 2.1
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148 | * @see {@link MapContextManager}.
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149 | */
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150 | public FLayer createLayer(String layerName, |
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151 | DataStoreParameters storeParameters) throws LoadLayerException {
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152 | // Se obtiene el driver que lee
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153 | try{
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154 | DataManager dataManager=DALLocator.getDataManager(); |
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155 | 43020 | jjdelcerro | DataStore dataStore=dataManager.openStore(storeParameters.getDataStoreName(), storeParameters); |
156 | 40435 | jjdelcerro | return createLayer(layerName, dataStore);
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157 | }catch (Exception e) { |
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158 | throw new LoadLayerException(layerName,e); |
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159 | } |
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160 | } |
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161 | |||
162 | /**
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163 | * @deprecated to be removed in gvSIG 2.1
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164 | * @see {@link MapContextManager}.
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165 | */
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166 | public FLayer createLayer(String layerName, DataStore dataStore) throws LoadLayerException{ |
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167 | try{
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168 | Class layerClass = this.getLayerClassFor(dataStore); |
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169 | if (layerClass == null) { |
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170 | throw new CantRetrieveLayerByStoreException(layerName,dataStore.getName()); |
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171 | } |
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172 | FLayer layer; |
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173 | try {
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174 | layer = (FLayer) layerClass.newInstance(); |
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175 | } catch (InstantiationException e) { |
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176 | throw new LoadLayerException(layerName, e); |
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177 | } catch (IllegalAccessException e) { |
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178 | throw new LoadLayerException(layerName, e); |
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179 | } |
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180 | |||
181 | layer.setName(layerName); |
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182 | ((SingleLayer) layer).setDataStore(dataStore); |
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183 | IProjection proj = (IProjection)dataStore.getDynValue(FeatureStore.METADATA_CRS); |
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184 | if (proj != null) { |
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185 | layer.setProjection(proj); |
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186 | } |
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187 | layer.load(); |
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188 | return layer;
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189 | } catch (Exception e) { |
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190 | throw new LoadLayerException(layerName,e); |
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191 | } |
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192 | } |
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193 | |||
194 | private class CantRetrieveLayerByStoreException extends LoadLayerException { |
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195 | |||
196 | /**
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197 | *
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198 | */
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199 | private static final long serialVersionUID = 1442450896900126712L; |
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200 | |||
201 | CantRetrieveLayerByStoreException(String layerName, String storeName) { |
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202 | super(
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203 | "Can't retrieve the class leyer of %(layer) to use for store %(store).",
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204 | null,
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205 | "_Cant_retrieve_the_class_leyer_of_XlayerX_to_use_for_store_XstoreX",
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206 | serialVersionUID |
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207 | ); |
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208 | setValue("layer", layerName);
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209 | setValue("store", storeName);
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210 | } |
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211 | } |
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212 | |||
213 | } |