root / tags / v2_0_0_Build_2047 / libraries / libFMap_dal / src / org / gvsig / fmap / dal / feature / impl / DefaultFeatureReference.java @ 38284
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1 | 24496 | jmvivo | package org.gvsig.fmap.dal.feature.impl; |
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2 | 24248 | jjdelcerro | |
3 | import java.lang.ref.WeakReference; |
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4 | 32900 | cordinyana | import java.text.MessageFormat; |
5 | 24248 | jjdelcerro | import java.util.ArrayList; |
6 | 30208 | jmvivo | import java.util.Arrays; |
7 | 24248 | jjdelcerro | import java.util.Iterator; |
8 | 30208 | jmvivo | import java.util.List; |
9 | 24248 | jjdelcerro | |
10 | 24505 | jmvivo | import org.gvsig.fmap.dal.exception.DataException; |
11 | 24496 | jmvivo | import org.gvsig.fmap.dal.feature.Feature; |
12 | import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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13 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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14 | import org.gvsig.fmap.dal.feature.FeatureType; |
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15 | 29289 | jmvivo | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
16 | 24496 | jmvivo | import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
17 | 30154 | cordinyana | import org.gvsig.tools.ToolsLocator; |
18 | 32880 | jjdelcerro | import org.gvsig.tools.dynobject.DynStruct; |
19 | 24248 | jjdelcerro | import org.gvsig.tools.persistence.Persistent; |
20 | import org.gvsig.tools.persistence.PersistentState; |
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21 | 32880 | jjdelcerro | import org.gvsig.tools.persistence.exception.PersistenceException; |
22 | 24248 | jjdelcerro | |
23 | public class DefaultFeatureReference implements |
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24 | FeatureReferenceProviderServices, Persistent { |
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25 | |||
26 | private Object oid; |
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27 | 28423 | jmvivo | private Integer myHashCode = null; |
28 | 24248 | jjdelcerro | private Object[] pk; |
29 | 27672 | jmvivo | private String[] pkNames; |
30 | 24248 | jjdelcerro | private WeakReference storeRef; |
31 | private boolean isNewFeature; |
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32 | 28660 | jmvivo | private String featureTypeId; |
33 | 31272 | jpiera | |
34 | /**
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35 | * Constructor used by the persistence manager. Don't use directly.
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36 | * After to invoke this method, the persistence manager calls
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37 | * the the method {@link #loadFromState(PersistentState)} to set
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38 | * the values of the internal attributes that this class needs to work.
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39 | */
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40 | public DefaultFeatureReference() {
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41 | super();
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42 | } |
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43 | |||
44 | 24248 | jjdelcerro | public DefaultFeatureReference(DefaultFeature feature) {
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45 | 25691 | jmvivo | this(feature.getStore(), feature.getData());
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46 | 24248 | jjdelcerro | } |
47 | |||
48 | public DefaultFeatureReference(FeatureStore store,
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49 | 29289 | jmvivo | FeatureProvider fdata) { |
50 | 25691 | jmvivo | this.isNewFeature = fdata.isNew();
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51 | 24248 | jjdelcerro | this.oid = null; |
52 | this.pk = null; |
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53 | this.storeRef = new WeakReference(store); |
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54 | 28660 | jmvivo | this.featureTypeId = fdata.getType().getId();
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55 | 25944 | vcaballero | |
56 | 28423 | jmvivo | if (fdata.getType().hasOID() || isNewFeature) {
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57 | 25944 | vcaballero | this.oid = fdata.getOID();
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58 | if (this.oid == null) { |
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59 | 28423 | jmvivo | // FIXME Exception
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60 | throw new RuntimeException("Missing OID"); |
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61 | 24248 | jjdelcerro | } |
62 | 28423 | jmvivo | } else {
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63 | 27570 | jmvivo | this.calculatePK(fdata);
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64 | 25944 | vcaballero | if (this.pk == null) { |
65 | 28423 | jmvivo | // FIXME Exception
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66 | throw new RuntimeException("Missing pk attributes"); |
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67 | 25944 | vcaballero | } |
68 | 24248 | jjdelcerro | } |
69 | 25971 | vcaballero | |
70 | 24248 | jjdelcerro | } |
71 | |||
72 | 25691 | jmvivo | /*
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73 | * Use only for Persistent.setState
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74 | */
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75 | 24248 | jjdelcerro | public DefaultFeatureReference(FeatureStore store) {
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76 | this.isNewFeature = false; |
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77 | this.oid = null; |
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78 | this.pk = null; |
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79 | this.storeRef = new WeakReference(store); |
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80 | } |
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81 | |||
82 | public DefaultFeatureReference(FeatureStore store, Object oid) { |
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83 | 28660 | jmvivo | // FIXME featureTypeId is needed !!!
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84 | 24248 | jjdelcerro | this.isNewFeature = false; |
85 | this.oid = oid;
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86 | this.pk = null; |
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87 | this.storeRef = new WeakReference(store); |
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88 | } |
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89 | |||
90 | private DefaultFeatureStore getStore() {
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91 | return (DefaultFeatureStore) this.storeRef.get(); |
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92 | } |
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93 | |||
94 | 29289 | jmvivo | private void calculatePK(FeatureProvider fdata) { |
95 | 27570 | jmvivo | ArrayList keys = new ArrayList(); |
96 | ArrayList keyNames = new ArrayList(); |
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97 | 24248 | jjdelcerro | FeatureType type = fdata.getType(); |
98 | Iterator it = type.iterator();
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99 | while (it.hasNext()) {
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100 | FeatureAttributeDescriptor attr = (FeatureAttributeDescriptor) it |
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101 | .next(); |
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102 | if (attr.isPrimaryKey()) {
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103 | 27570 | jmvivo | keys.add(fdata.get(attr.getIndex())); |
104 | keyNames.add(attr.getName()); |
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105 | 24248 | jjdelcerro | } |
106 | } |
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107 | 27570 | jmvivo | if (keys.size() < 1) { |
108 | pk = null;
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109 | pkNames = null;
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110 | } else {
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111 | pk = keys.toArray(); |
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112 | 33744 | cordinyana | pkNames = (String[]) keyNames.toArray(new String[keyNames.size()]); |
113 | 24248 | jjdelcerro | } |
114 | } |
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115 | |||
116 | public Feature getFeature() throws DataException { |
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117 | return this.getStore().getFeatureByReference(this); |
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118 | } |
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119 | |||
120 | public Feature getFeature(FeatureType featureType) throws DataException { |
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121 | return this.getStore().getFeatureByReference(this, featureType); |
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122 | } |
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123 | |||
124 | public Object getOID() { |
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125 | return this.oid; |
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126 | } |
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127 | |||
128 | public boolean isNewFeature() { |
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129 | return this.isNewFeature; |
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130 | } |
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131 | |||
132 | 28423 | jmvivo | |
133 | 25230 | jmvivo | public boolean equals(Object obj) { |
134 | if (!(obj instanceof DefaultFeatureReference)) { |
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135 | return false; |
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136 | } |
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137 | DefaultFeatureReference other = (DefaultFeatureReference) obj; |
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138 | |||
139 | FeatureStore otherStore = (FeatureStore) other.storeRef.get(); |
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140 | FeatureStore myrStore = (FeatureStore) this.storeRef.get();
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141 | if (otherStore == null || myrStore == null) { |
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142 | return false; |
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143 | } |
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144 | if (!myrStore.equals(otherStore)) {
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145 | return false; |
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146 | } |
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147 | 28423 | jmvivo | if (myHashCode != null && other.myHashCode != null) { |
148 | return myHashCode.equals(other.myHashCode);
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149 | } |
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150 | 25230 | jmvivo | if (this.oid != null) { |
151 | return this.oid.equals(other.oid); |
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152 | } |
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153 | 38106 | cordinyana | if(pk != null) { |
154 | if(other.pk == null) { |
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155 | 25230 | jmvivo | return false; |
156 | } |
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157 | 38106 | cordinyana | for (int i = 0; i < this.pk.length; i++) { |
158 | if (!this.pk[i].equals(other.pk[i])) { |
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159 | return false; |
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160 | } |
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161 | } |
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162 | 25230 | jmvivo | } |
163 | return true; |
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164 | } |
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165 | |||
166 | public int hashCode() { |
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167 | if (this.oid != null) { |
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168 | return this.oid.hashCode(); |
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169 | 28423 | jmvivo | } |
170 | if (myHashCode == null) { |
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171 | StringBuffer buff = new StringBuffer(); |
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172 | 25971 | vcaballero | |
173 | 28423 | jmvivo | for (int i = 0; i < this.pk.length; i++) { |
174 | buff.append(this.pk[i].hashCode());
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175 | buff.append("##");
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176 | 25230 | jmvivo | } |
177 | 28423 | jmvivo | myHashCode = new Integer(buff.toString().hashCode()); |
178 | 25230 | jmvivo | } |
179 | 28423 | jmvivo | return myHashCode.intValue();
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180 | 25230 | jmvivo | } |
181 | |||
182 | 27570 | jmvivo | public String[] getKeyNames() { |
183 | 27672 | jmvivo | return pkNames;
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184 | 27570 | jmvivo | } |
185 | 25230 | jmvivo | |
186 | 27570 | jmvivo | public Object getKeyValue(String name) { |
187 | 27672 | jmvivo | for (int i = 0; i < pkNames.length; i++) { |
188 | if (pkNames[i].equalsIgnoreCase(name)) {
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189 | return pk[i];
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190 | } |
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191 | } |
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192 | // FIXME exception????
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193 | 27570 | jmvivo | return null; |
194 | } |
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195 | |||
196 | 28660 | jmvivo | public String getFeatureTypeId() { |
197 | return featureTypeId;
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198 | } |
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199 | 27570 | jmvivo | |
200 | 30208 | jmvivo | // *** Persistence ***
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201 | 28660 | jmvivo | |
202 | 30208 | jmvivo | public void loadFromState(PersistentState state) |
203 | throws PersistenceException {
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204 | this.oid = state.get("oid"); |
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205 | this.myHashCode = (Integer) state.get("myHashCode"); |
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206 | this.storeRef = new WeakReference(state.get("store")); |
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207 | this.isNewFeature = state.getBoolean("isNewFeature"); |
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208 | this.featureTypeId = state.getString("featureTypeId"); |
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209 | List pkList = (List) state.get("pk"); |
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210 | if (pkList != null) { |
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211 | List pkNamesList = (List) state.get("pkNames"); |
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212 | if (pkNamesList == null || pkList.size() != pkNamesList.size()) { |
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213 | throw new PersistenceException("bad pkNames value"); |
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214 | } |
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215 | this.pk = pkList.toArray();
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216 | 33744 | cordinyana | this.pkNames =
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217 | (String[]) pkNamesList.toArray(new String[pkList.size()]); |
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218 | 30208 | jmvivo | } else {
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219 | this.pk = null; |
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220 | this.pkNames = null; |
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221 | } |
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222 | } |
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223 | |||
224 | public void saveToState(PersistentState state) throws PersistenceException { |
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225 | state.set("oid", oid);
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226 | state.set("myHashCode", myHashCode);
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227 | state.set("isNewFeature", isNewFeature);
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228 | state.set("store", (Persistent) storeRef.get());
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229 | state.set("featureTypeId", featureTypeId);
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230 | if (pk == null) { |
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231 | 33281 | jjdelcerro | state.setNull("pk");
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232 | state.setNull("pkNames");
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233 | 30208 | jmvivo | } else {
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234 | 33281 | jjdelcerro | state.set("pk", pk);
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235 | state.set("pkNames", pkNames);
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236 | 30208 | jmvivo | } |
237 | |||
238 | } |
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239 | |||
240 | public static void registerPersistent() { |
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241 | 32880 | jjdelcerro | DynStruct definition = ToolsLocator.getPersistenceManager().addDefinition( |
242 | DefaultFeatureReference.class, |
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243 | "Reference",
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244 | "DefaultFeatureReference Persistent definition",
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245 | null,
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246 | null
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247 | ); |
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248 | 30208 | jmvivo | |
249 | 33281 | jjdelcerro | definition.addDynFieldObject("oid")
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250 | .setClassOfValue(Object.class)
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251 | 33739 | fdiaz | .setMandatory(false)
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252 | 32880 | jjdelcerro | .setPersistent(true);
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253 | |||
254 | 33281 | jjdelcerro | definition.addDynFieldBoolean("isNewFeature")
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255 | 32880 | jjdelcerro | .setMandatory(true)
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256 | .setPersistent(true);
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257 | |||
258 | 33281 | jjdelcerro | definition.addDynFieldObject("store")
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259 | 32880 | jjdelcerro | .setClassOfValue(FeatureStore.class) |
260 | .setMandatory(true)
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261 | .setPersistent(true);
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262 | 30208 | jmvivo | |
263 | 33281 | jjdelcerro | definition.addDynFieldInt("myHashCode")
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264 | 33659 | fdiaz | .setMandatory(false)
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265 | 32880 | jjdelcerro | .setPersistent(true);
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266 | |||
267 | 33281 | jjdelcerro | definition.addDynFieldString("featureTypeId")
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268 | 32880 | jjdelcerro | .setMandatory(true)
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269 | .setPersistent(true);
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270 | 30208 | jmvivo | |
271 | 33659 | fdiaz | definition.addDynFieldArray("pk")
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272 | 33281 | jjdelcerro | .setClassOfItems(Object.class)
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273 | 32880 | jjdelcerro | .setMandatory(false)
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274 | .setPersistent(true);
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275 | 30208 | jmvivo | |
276 | 33659 | fdiaz | definition.addDynFieldArray("pkNames")
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277 | 33281 | jjdelcerro | .setClassOfItems(String.class)
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278 | 33659 | fdiaz | .setMandatory(false)
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279 | 32880 | jjdelcerro | .setPersistent(true);
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280 | |||
281 | 30208 | jmvivo | } |
282 | |||
283 | 32900 | cordinyana | public String toString() { |
284 | return MessageFormat.format( |
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285 | "FeatureReference: oid = {0}, myHashCode = {1}, "
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286 | + "pks = {2}, pkNames = {3}, "
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287 | + "isNewFeature = {4}, featureTypeId = {5}", new Object[] { |
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288 | oid, myHashCode, (pk == null ? null : Arrays.asList(pk)), |
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289 | (pkNames == null ? null : Arrays.asList(pkNames)), |
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290 | new Boolean(isNewFeature), |
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291 | featureTypeId }); |
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292 | } |
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293 | 30208 | jmvivo | |
294 | 24248 | jjdelcerro | } |