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 / LargeFeatureReferenceSelection.java
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1 | 45426 | fdiaz | /*
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2020 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, see <https://www.gnu.org/licenses/>.
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18 | *
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19 | * For any additional information, do not hesitate to contact us
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20 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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21 | */
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22 | package org.gvsig.fmap.dal.feature.impl; |
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23 | |||
24 | import java.util.Iterator; |
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25 | import java.util.List; |
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26 | import java.util.Set; |
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27 | import org.gvsig.fmap.dal.DataStore; |
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28 | import org.gvsig.fmap.dal.DataStoreNotification; |
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29 | import org.gvsig.fmap.dal.exception.DataException; |
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30 | import org.gvsig.fmap.dal.feature.Feature; |
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31 | import org.gvsig.fmap.dal.feature.FeatureReference; |
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32 | import org.gvsig.fmap.dal.feature.FeatureReferenceSelection; |
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33 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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34 | import org.gvsig.fmap.dal.feature.FeatureStoreNotification; |
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35 | import org.gvsig.fmap.dal.feature.FeatureType; |
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36 | import org.gvsig.tools.ToolsLocator; |
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37 | import org.gvsig.tools.dispose.DisposeUtils; |
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38 | import org.gvsig.tools.dispose.impl.AbstractDisposable; |
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39 | import org.gvsig.tools.dynobject.DynStruct; |
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40 | import org.gvsig.tools.exception.BaseException; |
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41 | import org.gvsig.tools.observer.Observable; |
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42 | import org.gvsig.tools.observer.Observer; |
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43 | import org.gvsig.tools.observer.impl.DelegateWeakReferencingObservable; |
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44 | import org.gvsig.tools.persistence.PersistentState; |
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45 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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46 | 45469 | jjdelcerro | import org.gvsig.tools.util.Size64; |
47 | 45426 | fdiaz | import org.gvsig.tools.visitor.Visitor; |
48 | |||
49 | /**
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50 | *
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51 | * @author gvSIG Team
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52 | */
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53 | 45469 | jjdelcerro | @SuppressWarnings("UseSpecificCatch") |
54 | 45426 | fdiaz | public class LargeFeatureReferenceSelection extends AbstractDisposable |
55 | implements FeatureReferenceSelection {
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56 | |||
57 | public static final String DYNCLASS_PERSISTENT_NAME = "LargeFeatureReferenceSelection"; |
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58 | |||
59 | private Set<String> selection; |
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60 | 45469 | jjdelcerro | private DefaultFeatureStore featureStore;
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61 | 45426 | fdiaz | private Boolean available = null; |
62 | private DelegateWeakReferencingObservable delegateObservable
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63 | = new DelegateWeakReferencingObservable(this); |
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64 | |||
65 | public LargeFeatureReferenceSelection(DefaultFeatureStore featureStore) {
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66 | super();
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67 | this.featureStore = featureStore;
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68 | DisposeUtils.bind(this.featureStore);
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69 | 45469 | jjdelcerro | this.selection = featureStore.getManager().createLargeSet();
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70 | 45426 | fdiaz | |
71 | } |
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72 | |||
73 | LargeFeatureReferenceSelection(FeatureStore featureStore, FeatureSelectionHelper helper) { |
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74 | super();
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75 | 45469 | jjdelcerro | this.featureStore = (DefaultFeatureStore) featureStore;
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76 | 45426 | fdiaz | DisposeUtils.bind(this.featureStore);
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77 | 45469 | jjdelcerro | this.selection = this.featureStore.getManager().createLargeSet(); |
78 | 45426 | fdiaz | } |
79 | |||
80 | /**
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81 | * Constructor used by the persistence manager. Don't use directly. After to
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82 | * invoke this method, the persistence manager calls the the method
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83 | * {@link #loadFromState(PersistentState)} to set the values of the internal
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84 | * attributes that this class needs to work.
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85 | */
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86 | LargeFeatureReferenceSelection() { |
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87 | super();
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88 | } |
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89 | |||
90 | public FeatureStore getFeatureStore() {
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91 | return featureStore;
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92 | } |
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93 | |||
94 | @Override
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95 | public boolean select(FeatureReference reference) { |
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96 | return this.selection.add(reference.getCode()); |
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97 | } |
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98 | |||
99 | @Override
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100 | public boolean deselect(FeatureReference reference) { |
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101 | boolean change;
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102 | change = this.selection.contains(reference.getCode());
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103 | this.selection.remove(reference.getCode());
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104 | if (change) {
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105 | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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106 | } |
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107 | return change;
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108 | } |
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109 | |||
110 | @Override
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111 | public void selectAll() throws DataException { |
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112 | try {
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113 | this.featureStore.accept((Object obj) -> { |
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114 | selection.add(((Feature) obj).getReference().getCode()); |
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115 | }); |
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116 | } catch (BaseException ex) {
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117 | throw new RuntimeException("Can't select all", ex); |
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118 | } |
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119 | } |
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120 | |||
121 | @Override
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122 | public void deselectAll() throws DataException { |
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123 | this.selection.clear();
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124 | } |
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125 | |||
126 | @Override
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127 | public boolean isSelected(FeatureReference reference) { |
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128 | return this.selection.contains(reference.getCode()); |
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129 | } |
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130 | |||
131 | @Override
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132 | public void reverse() { |
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133 | try {
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134 | this.featureStore.accept((Object obj) -> { |
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135 | String key = ((Feature) obj).getReference().getCode();
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136 | if(selection.contains(key)) {
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137 | selection.remove(key); |
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138 | } else {
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139 | selection.add(key); |
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140 | } |
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141 | }); |
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142 | } catch (BaseException ex) {
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143 | throw new RuntimeException("Can't reverse selection", ex); |
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144 | } |
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145 | } |
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146 | |||
147 | public boolean isEmpty() { |
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148 | if (this.selection == null) { |
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149 | return true; |
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150 | } |
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151 | return this.getSelectedCount() == 0; |
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152 | } |
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153 | |||
154 | @Override
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155 | public long getSelectedCount() { |
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156 | 45469 | jjdelcerro | try {
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157 | return ((Size64)selection).size64();
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158 | } catch(Exception ex) { |
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159 | return selection.size();
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160 | } |
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161 | 45426 | fdiaz | } |
162 | |||
163 | @Override
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164 | 46309 | jjdelcerro | public Iterator<FeatureReference> referenceIterator() { |
165 | 45426 | fdiaz | Iterator<String> it = selection.iterator(); |
166 | Iterator<FeatureReference> itFeatureReferences = new Iterator<FeatureReference>() { |
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167 | @Override
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168 | public boolean hasNext() { |
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169 | return it.hasNext();
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170 | } |
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171 | |||
172 | @Override
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173 | public FeatureReference next() {
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174 | String code = it.next();
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175 | FeatureReference fref = featureStore.getFeatureReference(code); |
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176 | return fref;
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177 | } |
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178 | }; |
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179 | return itFeatureReferences;
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180 | } |
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181 | |||
182 | @Override
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183 | 46309 | jjdelcerro | @SuppressWarnings("Convert2Lambda") |
184 | public Iterable<FeatureReference> referenceIterable() { |
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185 | return new Iterable<FeatureReference>() { |
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186 | @Override
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187 | public Iterator<FeatureReference> iterator() { |
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188 | Iterator<String> it = selection.iterator(); |
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189 | |||
190 | return new Iterator<FeatureReference>() { |
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191 | @Override
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192 | public boolean hasNext() { |
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193 | return it.hasNext();
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194 | } |
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195 | |||
196 | @Override
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197 | public FeatureReference next() {
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198 | String code = it.next();
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199 | FeatureReference fref = featureStore.getFeatureReference(code); |
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200 | return fref;
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201 | } |
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202 | }; |
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203 | } |
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204 | }; |
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205 | } |
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206 | |||
207 | @Override
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208 | 45426 | fdiaz | public boolean isAvailable() { |
209 | if (this.available == null) { |
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210 | this.available = false; |
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211 | if(this.featureStore != null){ |
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212 | try {
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213 | FeatureType type = this.featureStore.getDefaultFeatureType();
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214 | this.available = type.supportReferences();
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215 | } catch (DataException ex) {
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216 | this.available = false; |
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217 | } |
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218 | } |
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219 | } |
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220 | return this.available; |
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221 | } |
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222 | |||
223 | @Override
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224 | public boolean isFromStore(DataStore store) { |
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225 | return featureStore.equals(store);
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226 | } |
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227 | |||
228 | @Override
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229 | public void accept(Visitor visitor) throws BaseException { |
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230 | for (String string : selection) { |
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231 | FeatureReference fref = featureStore.getFeatureReference(string); |
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232 | visitor.visit(fref); |
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233 | } |
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234 | } |
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235 | |||
236 | @Override
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237 | protected void doDispose() throws BaseException { |
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238 | delegateObservable.deleteObservers(); |
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239 | deselectAll(); |
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240 | DisposeUtils.dispose(this.featureStore);
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241 | DisposeUtils.dispose(this.selection);
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242 | this.delegateObservable = null; |
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243 | this.featureStore = null; |
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244 | this.selection = null; |
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245 | } |
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246 | |||
247 | @Override
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248 | public void addObserver(Observer observer) { |
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249 | delegateObservable.addObserver(observer); |
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250 | } |
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251 | |||
252 | @Override
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253 | public void beginComplexNotification() { |
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254 | delegateObservable.beginComplexNotification(); |
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255 | } |
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256 | |||
257 | @Override
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258 | public void deleteObserver(Observer observer) { |
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259 | delegateObservable.deleteObserver(observer); |
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260 | } |
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261 | |||
262 | @Override
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263 | public void deleteObservers() { |
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264 | delegateObservable.deleteObservers(); |
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265 | } |
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266 | |||
267 | @Override
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268 | public void disableNotifications() { |
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269 | delegateObservable.disableNotifications(); |
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270 | } |
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271 | |||
272 | @Override
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273 | public void enableNotifications() { |
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274 | delegateObservable.enableNotifications(); |
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275 | } |
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276 | |||
277 | @Override
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278 | public void endComplexNotification() { |
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279 | // We don't want to notify many times in a complex notification
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280 | // scenario, so ignore notifications if in complex.
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281 | // Only one notification will be sent when the complex notification
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282 | // ends.
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283 | delegateObservable.notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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284 | delegateObservable.endComplexNotification(); |
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285 | } |
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286 | |||
287 | public boolean inComplex() { |
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288 | return delegateObservable.inComplex();
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289 | } |
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290 | |||
291 | public boolean isEnabledNotifications() { |
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292 | return delegateObservable.isEnabledNotifications();
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293 | } |
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294 | |||
295 | public void notifyObservers() { |
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296 | // We don't want to notify many times in a complex notification
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297 | // scenario, so ignore notifications if in complex.
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298 | // Only one notification will be sent when the complex notification
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299 | // ends.
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300 | if (!delegateObservable.inComplex()) {
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301 | delegateObservable.notifyObservers(); |
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302 | } |
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303 | } |
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304 | |||
305 | public void notifyObservers(Object arg) { |
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306 | if (!delegateObservable.inComplex()) {
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307 | delegateObservable.notifyObservers(arg); |
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308 | } |
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309 | } |
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310 | |||
311 | // @Override
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312 | // public Object clone() throws CloneNotSupportedException {
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313 | // LargeFeatureReferenceSelection clone = (LargeFeatureReferenceSelection) super.clone();
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314 | // // Original observers aren't cloned
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315 | // clone.delegateObservable = new DelegateWeakReferencingObservable(clone);
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316 | // // Clone internal data
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317 | // clone.selection = new LargeMapImpl<>();
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318 | // for (Map.Entry<String, Boolean> entry : selection.entrySet()) {
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319 | // String key = entry.getKey();
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320 | // Boolean val = entry.getValue();
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321 | // clone.selection.put(key, val);
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322 | // }
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323 | // return clone;
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324 | // }
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325 | |||
326 | |||
327 | @Override
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328 | public void update(Observable observable, Object notification) { |
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329 | // If a Feature is deleted, remove it from the selection Set.
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330 | if (notification instanceof FeatureStoreNotification) { |
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331 | FeatureStoreNotification storeNotif = (FeatureStoreNotification) notification; |
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332 | if (FeatureStoreNotification.AFTER_DELETE
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333 | .equalsIgnoreCase(storeNotif.getType())) { |
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334 | this.deselect(storeNotif.getFeature().getReference());
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335 | } |
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336 | } |
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337 | } |
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338 | |||
339 | @Override
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340 | public void saveToState(PersistentState state) throws PersistenceException { |
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341 | state.set("store", featureStore);
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342 | } |
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343 | |||
344 | @Override
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345 | public void loadFromState(PersistentState state) throws PersistenceException { |
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346 | 45469 | jjdelcerro | featureStore = (DefaultFeatureStore) state.get("store");
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347 | 45426 | fdiaz | if(selection != null) { |
348 | this.selection.clear();
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349 | } else {
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350 | 45469 | jjdelcerro | this.selection = this.featureStore.getManager().createLargeSet(); |
351 | 45426 | fdiaz | } |
352 | Iterator it = state.getIterator("selected"); |
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353 | while (it!=null && it.hasNext()) { |
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354 | 45647 | fdiaz | FeatureReference ref = (FeatureReference) it.next(); |
355 | 45426 | fdiaz | this.select(ref);
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356 | } |
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357 | |||
358 | /*
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359 | * If we do not do this, feature store will not listen
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360 | * to changes in selection after instantiating a
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361 | * persisted selection. For non-persisted instances,
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362 | * this line corresponds to the line found in method:
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363 | * getFeatureSelection() in DefaultFeatureStore.
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364 | * This is not dangerous because "addObserver" only adds
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365 | * if they were not already added, so future invocations
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366 | * with same instances will have no effect.
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367 | */
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368 | this.addObserver((DefaultFeatureStore) featureStore);
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369 | } |
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370 | |||
371 | protected void clearFeatureReferences() { |
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372 | if (this.selection == null) { |
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373 | return;
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374 | } |
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375 | this.selection.clear();
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376 | } |
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377 | |||
378 | public List<FeatureType> getFeatureTypes() { |
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379 | try {
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380 | return featureStore.getFeatureTypes();
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381 | } catch (Exception e) { |
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382 | throw new RuntimeException(e); |
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383 | } |
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384 | } |
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385 | |||
386 | public static void registerPersistent() { |
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387 | DynStruct definition = ToolsLocator.getPersistenceManager().addDefinition( |
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388 | DefaultFeatureReferenceSelection.class, |
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389 | DYNCLASS_PERSISTENT_NAME, |
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390 | "LargeFeatureReferenceSelection Persistent definition",
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391 | null,
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392 | null
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393 | ); |
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394 | |||
395 | definition.addDynFieldObject("store").setClassOfValue(FeatureStore.class).setMandatory(true); |
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396 | // definition.addDynFieldLong("totalSize").setMandatory(true);
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397 | 45647 | fdiaz | definition.addDynFieldList("selected").setClassOfItems(FeatureReference.class).setMandatory(false); |
398 | 45426 | fdiaz | |
399 | } |
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400 | |||
401 | |||
402 | |||
403 | } |