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 / dynobjectutils / DynObjectSetFeatureSetFacade.java
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | 40435 | jjdelcerro | *
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4 | 40559 | jjdelcerro | * Copyright (C) 2007-2013 gvSIG Association.
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5 | 40435 | jjdelcerro | *
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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 | 40559 | jjdelcerro | * as published by the Free Software Foundation; either version 3
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9 | 40435 | jjdelcerro | * 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 | 40559 | jjdelcerro | * 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 | 40435 | jjdelcerro | */
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24 | 42775 | jjdelcerro | package org.gvsig.fmap.dal.feature.impl.dynobjectutils; |
25 | 40435 | jjdelcerro | |
26 | import org.gvsig.fmap.dal.feature.Feature; |
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27 | import org.gvsig.fmap.dal.feature.FeatureSet; |
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28 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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29 | import org.gvsig.fmap.dal.feature.FeatureStoreNotification; |
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30 | import org.gvsig.tools.dispose.DisposableIterator; |
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31 | import org.gvsig.tools.dynobject.DynObject; |
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32 | import org.gvsig.tools.dynobject.DynObjectSet; |
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33 | import org.gvsig.tools.exception.BaseException; |
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34 | import org.gvsig.tools.observer.Observable; |
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35 | import org.gvsig.tools.observer.Observer; |
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36 | import org.gvsig.tools.observer.impl.BaseWeakReferencingObservable; |
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37 | import org.gvsig.tools.visitor.VisitCanceledException; |
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38 | import org.gvsig.tools.visitor.Visitor; |
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39 | |||
40 | /**
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41 | * {@link DynObject} implementation to facade of a {@link FeatureSet} and allow
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42 | * to be used as a {@link DynObjectSet}.
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43 | *
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44 | * @author gvSIG Team
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45 | * @version $Id$
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46 | */
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47 | public class DynObjectSetFeatureSetFacade extends BaseWeakReferencingObservable |
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48 | implements DynObjectSet, Observer { |
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49 | |||
50 | private final FeatureSet featureSet; |
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51 | |||
52 | private final FeatureStore store; |
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53 | |||
54 | private final DynObjectFeatureFacade featureFacade = |
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55 | 42775 | jjdelcerro | new DynObjectFeatureFacade(null); |
56 | 40435 | jjdelcerro | |
57 | private final boolean fast; |
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58 | |||
59 | /**
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60 | * Creates a new facade over a given feature set, with fast dynobject
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61 | * iteration.
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62 | *
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63 | * @param featureSet
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64 | * to facade
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65 | */
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66 | public DynObjectSetFeatureSetFacade(FeatureSet featureSet,
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67 | FeatureStore store) { |
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68 | this(featureSet, store, true); |
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69 | } |
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70 | |||
71 | /**
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72 | * Creates a new facade over a given feature set, with fast dynobject
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73 | * iteration.
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74 | *
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75 | * @param featureSet
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76 | * to facade
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77 | * @param fast
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78 | * if true try to reuse objects as much as possible to make the
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79 | * object iteration faster. If true, DynObjects got through the
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80 | * returned set must not be stored unless cloned.
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81 | */
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82 | public DynObjectSetFeatureSetFacade(FeatureSet featureSet,
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83 | FeatureStore store, boolean fast) {
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84 | this.featureSet = featureSet;
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85 | this.store = store;
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86 | store.addObserver(this);
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87 | this.fast = fast;
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88 | } |
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89 | |||
90 | public void dispose() { |
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91 | store.deleteObserver(this);
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92 | } |
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93 | |||
94 | public void accept(final Visitor visitor, long firstValueIndex) |
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95 | throws BaseException {
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96 | featureSet.accept(new Visitor() {
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97 | |||
98 | public void visit(Object obj) throws VisitCanceledException, |
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99 | BaseException { |
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100 | DynObjectFeatureFacade feature; |
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101 | if (fast) {
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102 | feature = featureFacade; |
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103 | } else {
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104 | feature = new DynObjectFeatureFacade();
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105 | } |
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106 | 42775 | jjdelcerro | feature.setFeature(((Feature) obj).getCopy()); |
107 | 40435 | jjdelcerro | visitor.visit(feature); |
108 | } |
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109 | }, firstValueIndex); |
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110 | } |
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111 | |||
112 | public void accept(final Visitor visitor) throws BaseException { |
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113 | featureSet.accept(new Visitor() {
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114 | |||
115 | public void visit(Object obj) throws VisitCanceledException, |
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116 | BaseException { |
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117 | 42775 | jjdelcerro | featureFacade.setFeature(((Feature) obj).getCopy()); |
118 | 40435 | jjdelcerro | visitor.visit(featureFacade); |
119 | } |
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120 | }); |
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121 | } |
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122 | |||
123 | public long getSize() throws BaseException { |
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124 | return featureSet.getSize();
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125 | } |
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126 | |||
127 | public DisposableIterator iterator(long index) throws BaseException { |
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128 | if (fast) {
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129 | return new DynObjectIteratorFeatureIteratorFacade( |
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130 | featureSet.fastIterator(index), featureFacade); |
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131 | } else {
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132 | return new DynObjectIteratorFeatureIteratorFacade( |
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133 | featureSet.fastIterator(index)); |
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134 | } |
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135 | } |
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136 | |||
137 | public DisposableIterator iterator() throws BaseException { |
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138 | if (fast) {
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139 | return new DynObjectIteratorFeatureIteratorFacade( |
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140 | featureSet.fastIterator(), featureFacade); |
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141 | } else {
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142 | return new DynObjectIteratorFeatureIteratorFacade( |
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143 | featureSet.fastIterator()); |
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144 | } |
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145 | } |
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146 | |||
147 | public boolean isEmpty() throws BaseException { |
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148 | return featureSet.isEmpty();
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149 | } |
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150 | |||
151 | public boolean isDeleteEnabled() { |
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152 | return store.isEditing();
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153 | } |
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154 | |||
155 | public void delete(DynObject dynObject) throws BaseException { |
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156 | DynObjectFeatureFacade facade = (DynObjectFeatureFacade) dynObject; |
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157 | featureSet.delete(facade.getFeature()); |
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158 | } |
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159 | |||
160 | public boolean isUpdateEnabled() { |
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161 | return store.isEditing();
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162 | } |
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163 | |||
164 | public void update(DynObject dynObject) throws BaseException { |
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165 | DynObjectFeatureFacade facade = (DynObjectFeatureFacade) dynObject; |
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166 | 42775 | jjdelcerro | featureSet.update(facade.getEditableFeature()); |
167 | 40435 | jjdelcerro | } |
168 | |||
169 | public void update(Observable observable, Object notification) { |
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170 | if (observable.equals(store)
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171 | && notification instanceof FeatureStoreNotification) {
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172 | FeatureStoreNotification event = |
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173 | (FeatureStoreNotification) notification; |
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174 | if (event.getType() == FeatureStoreNotification.AFTER_STARTEDITING
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175 | || event.getType() == FeatureStoreNotification.AFTER_FINISHEDITING |
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176 | || event.getType() == FeatureStoreNotification.AFTER_CANCELEDITING) { |
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177 | setChanged(); |
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178 | notify(this, new Notification() { |
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179 | |||
180 | public String getType() { |
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181 | return Notification.EDITION_STATUS_CHANGE; |
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182 | } |
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183 | }); |
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184 | } |
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185 | } |
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186 | |||
187 | } |
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188 | } |