svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / DefaultFeatureReference.java @ 43358
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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.dal.feature.impl; |
25 | |||
26 | import java.lang.ref.WeakReference; |
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27 | import java.util.Arrays; |
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28 | import java.util.List; |
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29 | 43358 | jjdelcerro | import org.apache.commons.lang3.ArrayUtils; |
30 | 40435 | jjdelcerro | |
31 | import org.gvsig.fmap.dal.exception.DataException; |
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32 | import org.gvsig.fmap.dal.feature.Feature; |
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33 | import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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34 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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35 | import org.gvsig.fmap.dal.feature.FeatureType; |
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36 | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
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37 | import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
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38 | import org.gvsig.tools.ToolsLocator; |
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39 | import org.gvsig.tools.dynobject.DynStruct; |
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40 | import org.gvsig.tools.persistence.Persistent; |
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41 | import org.gvsig.tools.persistence.PersistentState; |
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42 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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43 | |||
44 | public class DefaultFeatureReference implements |
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45 | FeatureReferenceProviderServices, Persistent { |
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46 | |||
47 | private Object oid; |
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48 | private Integer myHashCode = null; |
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49 | private Object[] pk; |
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50 | private String[] pkNames; |
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51 | private WeakReference storeRef; |
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52 | private boolean isNewFeature; |
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53 | private String featureTypeId; |
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54 | |||
55 | /**
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56 | * Constructor used by the persistence manager. Don't use directly.
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57 | * After to invoke this method, the persistence manager calls
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58 | * the the method {@link #loadFromState(PersistentState)} to set
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59 | * the values of the internal attributes that this class needs to work.
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60 | */
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61 | public DefaultFeatureReference() {
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62 | super();
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63 | } |
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64 | |||
65 | public DefaultFeatureReference(DefaultFeature feature) {
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66 | this(feature.getStore(), feature.getData());
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67 | } |
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68 | |||
69 | public DefaultFeatureReference(FeatureStore store,
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70 | FeatureProvider fdata) { |
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71 | this.isNewFeature = fdata.isNew();
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72 | this.oid = null; |
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73 | this.pk = null; |
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74 | this.storeRef = new WeakReference(store); |
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75 | this.featureTypeId = fdata.getType().getId();
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76 | |||
77 | if (fdata.getType().hasOID() || isNewFeature) {
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78 | this.oid = fdata.getOID();
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79 | if (this.oid == null) { |
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80 | // FIXME Exception
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81 | throw new RuntimeException("Missing OID"); |
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82 | } |
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83 | } else {
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84 | this.calculatePK(fdata);
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85 | if (this.pk == null) { |
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86 | // FIXME Exception
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87 | throw new RuntimeException("Missing pk attributes"); |
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88 | } |
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89 | } |
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90 | |||
91 | } |
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92 | |||
93 | /*
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94 | * Use only for Persistent.setState
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95 | */
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96 | public DefaultFeatureReference(FeatureStore store) {
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97 | this.isNewFeature = false; |
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98 | this.oid = null; |
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99 | this.pk = null; |
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100 | this.storeRef = new WeakReference(store); |
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101 | } |
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102 | |||
103 | public DefaultFeatureReference(FeatureStore store, Object oid) { |
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104 | // FIXME featureTypeId is needed !!!
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105 | this.isNewFeature = false; |
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106 | this.oid = oid;
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107 | this.pk = null; |
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108 | this.storeRef = new WeakReference(store); |
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109 | } |
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110 | |||
111 | private DefaultFeatureStore getStore() {
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112 | return (DefaultFeatureStore) this.storeRef.get(); |
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113 | } |
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114 | |||
115 | private void calculatePK(FeatureProvider fdata) { |
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116 | 43358 | jjdelcerro | FeatureAttributeDescriptor[] pkattrs = fdata.getType().getPrimaryKey();
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117 | if( ArrayUtils.isEmpty(pkattrs) ) {
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118 | this.pk = null; |
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119 | this.pkNames = null; |
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120 | return ;
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121 | } |
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122 | this.pk = new Object[pkattrs.length]; |
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123 | this.pkNames = new String[pkattrs.length]; |
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124 | int n = 0; |
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125 | for (FeatureAttributeDescriptor pkattr : pkattrs) {
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126 | this.pk[n] = fdata.get(pkattr.getIndex());
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127 | this.pkNames[n] = pkattr.getName();
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128 | n++; |
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129 | } |
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130 | } |
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131 | 40435 | jjdelcerro | |
132 | 43358 | jjdelcerro | @Override
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133 | 40435 | jjdelcerro | public Feature getFeature() throws DataException { |
134 | return this.getStore().getFeatureByReference(this); |
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135 | } |
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136 | |||
137 | 43358 | jjdelcerro | @Override
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138 | 40435 | jjdelcerro | public Feature getFeature(FeatureType featureType) throws DataException { |
139 | return this.getStore().getFeatureByReference(this, featureType); |
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140 | } |
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141 | |||
142 | 43358 | jjdelcerro | @Override
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143 | 40435 | jjdelcerro | public Object getOID() { |
144 | return this.oid; |
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145 | } |
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146 | |||
147 | 43358 | jjdelcerro | @Override
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148 | 40435 | jjdelcerro | public boolean isNewFeature() { |
149 | return this.isNewFeature; |
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150 | } |
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151 | |||
152 | |||
153 | 43358 | jjdelcerro | @Override
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154 | 40435 | jjdelcerro | public boolean equals(Object obj) { |
155 | if (!(obj instanceof DefaultFeatureReference)) { |
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156 | return false; |
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157 | } |
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158 | DefaultFeatureReference other = (DefaultFeatureReference) obj; |
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159 | |||
160 | FeatureStore otherStore = (FeatureStore) other.storeRef.get(); |
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161 | FeatureStore myrStore = (FeatureStore) this.storeRef.get();
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162 | if (otherStore == null || myrStore == null) { |
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163 | return false; |
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164 | } |
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165 | if (!myrStore.equals(otherStore)) {
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166 | return false; |
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167 | } |
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168 | if (myHashCode != null && other.myHashCode != null) { |
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169 | return myHashCode.equals(other.myHashCode);
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170 | } |
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171 | if (this.oid != null) { |
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172 | return this.oid.equals(other.oid); |
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173 | } |
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174 | if(pk != null) { |
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175 | if(other.pk == null) { |
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176 | return false; |
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177 | } |
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178 | for (int i = 0; i < this.pk.length; i++) { |
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179 | if (!this.pk[i].equals(other.pk[i])) { |
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180 | return false; |
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181 | } |
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182 | } |
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183 | } |
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184 | return true; |
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185 | } |
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186 | |||
187 | 43358 | jjdelcerro | @Override
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188 | 40435 | jjdelcerro | public int hashCode() { |
189 | if (this.oid != null) { |
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190 | return this.oid.hashCode(); |
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191 | } |
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192 | if (myHashCode == null) { |
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193 | 43358 | jjdelcerro | StringBuilder buff = new StringBuilder(); |
194 | 40435 | jjdelcerro | |
195 | for (int i = 0; i < this.pk.length; i++) { |
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196 | buff.append(this.pk[i].hashCode());
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197 | buff.append("##");
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198 | } |
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199 | 43358 | jjdelcerro | myHashCode = buff.toString().hashCode(); |
200 | 40435 | jjdelcerro | } |
201 | 43358 | jjdelcerro | return myHashCode;
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202 | 40435 | jjdelcerro | } |
203 | |||
204 | 43358 | jjdelcerro | @Override
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205 | 40435 | jjdelcerro | public String[] getKeyNames() { |
206 | return pkNames;
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207 | } |
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208 | |||
209 | 43358 | jjdelcerro | @Override
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210 | 40435 | jjdelcerro | public Object getKeyValue(String name) { |
211 | for (int i = 0; i < pkNames.length; i++) { |
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212 | if (pkNames[i].equalsIgnoreCase(name)) {
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213 | return pk[i];
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214 | } |
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215 | } |
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216 | // FIXME exception????
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217 | return null; |
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218 | } |
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219 | |||
220 | 43358 | jjdelcerro | @Override
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221 | 40435 | jjdelcerro | public String getFeatureTypeId() { |
222 | return featureTypeId;
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223 | } |
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224 | |||
225 | // *** Persistence ***
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226 | |||
227 | 43358 | jjdelcerro | @Override
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228 | 40435 | jjdelcerro | public void loadFromState(PersistentState state) |
229 | throws PersistenceException {
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230 | this.oid = state.get("oid"); |
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231 | this.myHashCode = (Integer) state.get("myHashCode"); |
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232 | this.storeRef = new WeakReference(state.get("store")); |
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233 | this.isNewFeature = state.getBoolean("isNewFeature"); |
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234 | this.featureTypeId = state.getString("featureTypeId"); |
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235 | List pkList = (List) state.get("pk"); |
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236 | if (pkList != null) { |
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237 | List pkNamesList = (List) state.get("pkNames"); |
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238 | if (pkNamesList == null || pkList.size() != pkNamesList.size()) { |
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239 | throw new PersistenceException("bad pkNames value"); |
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240 | } |
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241 | this.pk = pkList.toArray();
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242 | this.pkNames =
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243 | (String[]) pkNamesList.toArray(new String[pkList.size()]); |
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244 | } else {
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245 | this.pk = null; |
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246 | this.pkNames = null; |
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247 | } |
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248 | } |
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249 | |||
250 | 43358 | jjdelcerro | @Override
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251 | 40435 | jjdelcerro | public void saveToState(PersistentState state) throws PersistenceException { |
252 | state.set("oid", oid);
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253 | state.set("myHashCode", myHashCode);
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254 | state.set("isNewFeature", isNewFeature);
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255 | state.set("store", (Persistent) storeRef.get());
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256 | state.set("featureTypeId", featureTypeId);
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257 | if (pk == null) { |
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258 | state.setNull("pk");
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259 | state.setNull("pkNames");
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260 | } else {
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261 | state.set("pk", pk);
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262 | state.set("pkNames", pkNames);
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263 | } |
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264 | |||
265 | } |
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266 | |||
267 | public static void registerPersistent() { |
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268 | DynStruct definition = ToolsLocator.getPersistenceManager().addDefinition( |
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269 | DefaultFeatureReference.class, |
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270 | "Reference",
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271 | "DefaultFeatureReference Persistent definition",
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272 | null,
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273 | null
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274 | ); |
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275 | |||
276 | definition.addDynFieldObject("oid")
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277 | .setClassOfValue(Object.class)
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278 | .setMandatory(false)
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279 | .setPersistent(true);
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280 | |||
281 | definition.addDynFieldBoolean("isNewFeature")
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282 | .setMandatory(true)
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283 | .setPersistent(true);
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284 | |||
285 | definition.addDynFieldObject("store")
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286 | .setClassOfValue(FeatureStore.class) |
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287 | .setMandatory(true)
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288 | .setPersistent(true);
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289 | |||
290 | definition.addDynFieldInt("myHashCode")
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291 | .setMandatory(false)
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292 | .setPersistent(true);
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293 | |||
294 | definition.addDynFieldString("featureTypeId")
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295 | .setMandatory(true)
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296 | .setPersistent(true);
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297 | |||
298 | definition.addDynFieldArray("pk")
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299 | .setClassOfItems(Object.class)
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300 | .setMandatory(false)
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301 | .setPersistent(true);
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302 | |||
303 | definition.addDynFieldArray("pkNames")
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304 | .setClassOfItems(String.class)
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305 | .setMandatory(false)
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306 | .setPersistent(true);
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307 | |||
308 | } |
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309 | |||
310 | 43243 | jjdelcerro | @Override
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311 | 40435 | jjdelcerro | public String toString() { |
312 | 43243 | jjdelcerro | StringBuilder builder = new StringBuilder(); |
313 | builder.append("FeatureReference: oid = ");
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314 | builder.append(oid); |
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315 | if( myHashCode!=null ) { |
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316 | builder.append(", myHashCode = ");
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317 | builder.append(myHashCode); |
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318 | } |
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319 | if( pk!=null ) { |
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320 | builder.append(", pks = ");
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321 | builder.append(Arrays.asList(pk));
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322 | } |
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323 | if( pkNames!=null ) { |
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324 | builder.append(", pkNames = ");
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325 | builder.append(Arrays.asList(pkNames));
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326 | } |
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327 | if( isNewFeature ) {
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328 | builder.append(", isNew = ");
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329 | builder.append(isNewFeature); |
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330 | } |
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331 | if( featureTypeId!=null ) { |
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332 | builder.append(", featureTypeId = ");
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333 | builder.append(featureTypeId); |
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334 | } |
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335 | return builder.toString();
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336 | 40435 | jjdelcerro | } |
337 | |||
338 | } |