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 / DefaultFeatureStoreTransforms.java @ 40559
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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.util.ArrayList; |
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27 | import java.util.Collections; |
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28 | import java.util.Iterator; |
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29 | import java.util.List; |
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30 | import java.util.ListIterator; |
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31 | |||
32 | import org.gvsig.fmap.dal.exception.DataException; |
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33 | import org.gvsig.fmap.dal.feature.EditableFeature; |
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34 | import org.gvsig.fmap.dal.feature.EditableFeatureType; |
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35 | import org.gvsig.fmap.dal.feature.Feature; |
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36 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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37 | import org.gvsig.fmap.dal.feature.FeatureStoreNotification; |
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38 | import org.gvsig.fmap.dal.feature.FeatureStoreTransform; |
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39 | import org.gvsig.fmap.dal.feature.FeatureStoreTransforms; |
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40 | import org.gvsig.fmap.dal.feature.FeatureType; |
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41 | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
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42 | import org.gvsig.tools.ToolsLocator; |
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43 | import org.gvsig.tools.dynobject.DynStruct; |
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44 | import org.gvsig.tools.dynobject.exception.DynFieldNotFoundException; |
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45 | import org.gvsig.tools.persistence.Persistent; |
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46 | import org.gvsig.tools.persistence.PersistentState; |
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47 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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48 | |||
49 | public class DefaultFeatureStoreTransforms implements FeatureStoreTransforms, |
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50 | Persistent { |
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51 | |||
52 | private DefaultFeatureStore store;
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53 | private List transforms; |
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54 | private Boolean isTramsformValues; |
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55 | private TransformTemporalList lastTransformStack;
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56 | |||
57 | public DefaultFeatureStoreTransforms() {
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58 | this.store = null; |
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59 | this.transforms = new ArrayList(); |
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60 | this.isTramsformValues = Boolean.FALSE; |
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61 | } |
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62 | |||
63 | public DefaultFeatureStoreTransforms(DefaultFeatureStore store) {
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64 | this.store = store;
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65 | this.transforms = new ArrayList(); |
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66 | } |
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67 | |||
68 | protected void checkEditingMode() { |
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69 | if (store == null || store.getMode() != FeatureStore.MODE_QUERY) { |
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70 | throw new IllegalStateException(); |
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71 | } |
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72 | } |
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73 | |||
74 | protected void notifyChangeToStore() { |
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75 | this.store.notifyChange(FeatureStoreNotification.TRANSFORM_CHANGE);
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76 | } |
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77 | |||
78 | public FeatureStoreTransform add(FeatureStoreTransform transform)
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79 | throws DataException {
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80 | checkEditingMode(); |
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81 | if (transform.getDefaultFeatureType()!=null){ |
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82 | if( ! transform.getFeatureTypes().contains(transform.getDefaultFeatureType())) {
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83 | throw new IllegalArgumentException(); // FIXME: A�adir tipo especifico. |
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84 | } |
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85 | this.transforms.add(transform);
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86 | transform.setSourceMetadata(this.store.metadata);
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87 | this.notifyChangeToStore();
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88 | if (this.isTramsformValues == null |
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89 | || (!this.isTramsformValues.booleanValue())) {
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90 | if (transform.isTransformsOriginalValues()) {
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91 | this.isTramsformValues = Boolean.TRUE; |
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92 | } |
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93 | |||
94 | } |
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95 | } |
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96 | |||
97 | return transform;
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98 | } |
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99 | |||
100 | |||
101 | public void clear() { |
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102 | checkEditingMode(); |
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103 | this.transforms.clear();
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104 | this.notifyChangeToStore();
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105 | this.isTramsformValues = Boolean.FALSE; |
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106 | } |
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107 | |||
108 | public FeatureStoreTransform getTransform(int index) { |
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109 | return (FeatureStoreTransform) this.transforms.get(index); |
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110 | } |
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111 | |||
112 | public Iterator iterator() { |
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113 | return Collections.unmodifiableList(transforms).iterator(); |
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114 | } |
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115 | |||
116 | public Object remove(int index) { |
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117 | checkEditingMode(); |
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118 | Object trans = this.transforms.remove(index); |
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119 | this.notifyChangeToStore();
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120 | this.isTramsformValues = null; |
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121 | return trans;
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122 | } |
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123 | |||
124 | public boolean remove(FeatureStoreTransform transform) { |
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125 | checkEditingMode(); |
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126 | boolean removed = this.transforms.remove(transform); |
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127 | if (removed) {
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128 | this.notifyChangeToStore();
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129 | |||
130 | } |
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131 | this.isTramsformValues = null; |
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132 | return removed;
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133 | |||
134 | } |
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135 | |||
136 | public int size() { |
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137 | return this.transforms.size(); |
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138 | } |
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139 | |||
140 | public boolean isEmpty() { |
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141 | return this.transforms.isEmpty(); |
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142 | } |
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143 | |||
144 | private class TransformTemporalListElement { |
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145 | public FeatureStoreTransform transform = null; |
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146 | public FeatureType targetFeatureType = null; |
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147 | } |
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148 | |||
149 | private class TransformTemporalList extends ArrayList { |
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150 | /**
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151 | *
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152 | */
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153 | private static final long serialVersionUID = 1677014259279944000L; |
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154 | private FeatureType targetFType;
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155 | |||
156 | public boolean add(Object arg0) { |
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157 | if (this.isEmpty()) { |
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158 | targetFType = ((TransformTemporalListElement) arg0).targetFeatureType; |
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159 | } |
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160 | return super.add(arg0); |
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161 | } |
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162 | |||
163 | } |
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164 | |||
165 | protected TransformTemporalList getTransformTemporalList(
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166 | FeatureType targetFeatureType) { |
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167 | if (this.lastTransformStack == null |
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168 | || this.lastTransformStack.size() != this.transforms.size() |
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169 | || !(this.lastTransformStack.targetFType
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170 | .equals(targetFeatureType))) { |
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171 | TransformTemporalList result = new TransformTemporalList();
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172 | TransformTemporalListElement item; |
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173 | FeatureType nextFType = targetFeatureType; |
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174 | |||
175 | for (int i = transforms.size() - 1; i > -1; i--) { |
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176 | item = new TransformTemporalListElement();
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177 | item.transform = (FeatureStoreTransform) transforms.get(i); |
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178 | item.targetFeatureType = nextFType; |
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179 | nextFType = item.transform |
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180 | .getSourceFeatureTypeFrom(item.targetFeatureType); |
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181 | result.add(item); |
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182 | } |
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183 | this.lastTransformStack = result;
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184 | } |
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185 | return this.lastTransformStack; |
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186 | } |
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187 | |||
188 | public Feature applyTransform(DefaultFeature source,
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189 | FeatureType targetFeatureType) |
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190 | throws DataException {
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191 | if (this.transforms.isEmpty()) { |
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192 | return source;
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193 | } |
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194 | |||
195 | TransformTemporalList stack = this
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196 | .getTransformTemporalList(targetFeatureType); |
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197 | TransformTemporalListElement item; |
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198 | FeatureProvider targetData; |
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199 | EditableFeature target; |
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200 | ListIterator iterator = stack.listIterator(stack.size());
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201 | FeatureType tft = null;
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202 | |||
203 | |||
204 | while (iterator.hasPrevious()) {
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205 | item = (TransformTemporalListElement) iterator.previous(); |
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206 | |||
207 | tft = item.targetFeatureType; |
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208 | if (tft instanceof EditableFeatureType) { |
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209 | /*
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210 | * Must be non-editable to create
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211 | * DefaultFeatureProvider
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212 | */
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213 | tft = ((EditableFeatureType) tft).getNotEditableCopy(); |
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214 | } |
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215 | |||
216 | targetData = this.store.createDefaultFeatureProvider(tft);
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217 | targetData.setOID(source.getData().getOID()); |
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218 | targetData.setNew(false);
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219 | target = (new DefaultEditableFeature(this.store, targetData)) |
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220 | .getEditable(); |
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221 | item.transform.applyTransform(source, target); |
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222 | source = (DefaultFeature) target.getNotEditableCopy(); |
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223 | } |
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224 | |||
225 | return source;
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226 | |||
227 | } |
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228 | |||
229 | public FeatureType getSourceFeatureTypeFrom(FeatureType targetFeatureType) {
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230 | FeatureType tmpFType = targetFeatureType; |
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231 | |||
232 | for (int i = transforms.size() - 1; i > -1; i--) { |
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233 | FeatureStoreTransform transform = (FeatureStoreTransform) transforms |
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234 | .get(i); |
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235 | tmpFType = transform.getSourceFeatureTypeFrom(tmpFType); |
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236 | } |
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237 | return tmpFType;
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238 | } |
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239 | |||
240 | public FeatureType getDefaultFeatureType() throws DataException { |
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241 | if (this.transforms.isEmpty()) { |
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242 | return null; |
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243 | } |
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244 | FeatureStoreTransform transform = (FeatureStoreTransform) this.transforms
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245 | .get(this.transforms.size() - 1); |
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246 | return transform.getDefaultFeatureType();
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247 | } |
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248 | |||
249 | public List getFeatureTypes() throws DataException { |
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250 | if (this.transforms.isEmpty()) { |
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251 | return null; |
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252 | } |
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253 | FeatureStoreTransform transform = (FeatureStoreTransform) this.transforms
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254 | .get(this.transforms.size() - 1); |
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255 | return transform.getFeatureTypes();
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256 | } |
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257 | |||
258 | public FeatureStore getFeatureStore() {
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259 | return this.store; |
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260 | } |
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261 | |||
262 | public void setFeatureStore(FeatureStore featureStore) { |
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263 | if (this.store != null) { |
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264 | throw new IllegalStateException();// FIXME: A�adir tipo especifico. |
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265 | } |
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266 | this.store = (DefaultFeatureStore) featureStore;
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267 | } |
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268 | |||
269 | |||
270 | public void setStoreForClone(FeatureStore featureStore) { |
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271 | this.store = (DefaultFeatureStore) featureStore;
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272 | } |
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273 | |||
274 | public boolean isTransformsOriginalValues() { |
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275 | if (this.isTramsformValues == null) { |
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276 | Iterator iter = this.transforms.iterator(); |
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277 | FeatureStoreTransform transform; |
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278 | this.isTramsformValues = Boolean.FALSE; |
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279 | while (iter.hasNext()) {
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280 | transform = (FeatureStoreTransform) iter.next(); |
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281 | if (transform.isTransformsOriginalValues()){
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282 | this.isTramsformValues = Boolean.TRUE; |
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283 | break;
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284 | } |
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285 | } |
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286 | } |
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287 | return this.isTramsformValues.booleanValue(); |
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288 | } |
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289 | |||
290 | public FeatureType getFeatureType(String featureTypeId) |
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291 | throws DataException {
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292 | if (this.transforms.isEmpty()) { |
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293 | return null; |
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294 | } |
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295 | if (featureTypeId == null) { |
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296 | return this.getDefaultFeatureType(); |
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297 | } |
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298 | Iterator iter = this.getFeatureTypes().iterator(); |
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299 | FeatureType fType; |
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300 | while (iter.hasNext()) {
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301 | fType = (FeatureType) iter.next(); |
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302 | if (fType.getId().equals(featureTypeId)) {
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303 | return fType;
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304 | } |
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305 | } |
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306 | return null; |
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307 | } |
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308 | |||
309 | |||
310 | |||
311 | // *** Persistence ***
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312 | |||
313 | public void saveToState(PersistentState state) throws PersistenceException { |
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314 | state.set("store", store);
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315 | state.set("isTramsformValues", this.isTramsformValues); |
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316 | state.set("transforms", this.transforms); |
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317 | } |
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318 | |||
319 | public void loadFromState(PersistentState state) |
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320 | throws PersistenceException {
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321 | this.isTramsformValues = (Boolean) state.get("isTramsformValues"); |
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322 | this.transforms = (List) state.get("transforms"); |
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323 | this.store = (DefaultFeatureStore) state.get("store"); |
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324 | } |
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325 | |||
326 | public static void registerPersistent() { |
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327 | DynStruct definition = ToolsLocator.getPersistenceManager().addDefinition( |
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328 | DefaultFeatureStoreTransforms.class, |
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329 | "DefaultFeatureStoreTransforms",
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330 | "DefaultFeatureStoreTransforms Persistent definition",
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331 | null,
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332 | null
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333 | ); |
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334 | |||
335 | definition.addDynFieldBoolean("isTramsformValues").setMandatory(false); |
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336 | definition.addDynFieldList("transforms").setClassOfItems(FeatureStoreTransform.class).setMandatory(true); |
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337 | definition.addDynFieldObject("store").setClassOfValue(FeatureStore.class).setMandatory(true); |
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338 | |||
339 | } |
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340 | |||
341 | public Object getDynValue(String name) throws DynFieldNotFoundException { |
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342 | if( ! this.transforms.isEmpty() ) { |
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343 | FeatureStoreTransform transform = (FeatureStoreTransform) transforms.get(this.transforms.size()-1); |
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344 | if( transform.hasDynValue(name) ) {
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345 | return transform.getDynValue(name);
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346 | } |
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347 | } |
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348 | throw new DynFieldNotFoundException(name, "transforms"); |
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349 | } |
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350 | |||
351 | public void setDynValue(String name, Object value) throws DynFieldNotFoundException { |
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352 | if( ! this.transforms.isEmpty() ) { |
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353 | FeatureStoreTransform transform = (FeatureStoreTransform) transforms.get(this.transforms.size()-1); |
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354 | transform.setDynValue(name, value); |
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355 | } |
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356 | } |
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357 | |||
358 | public boolean hasDynValue(String name) { |
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359 | if( ! this.transforms.isEmpty() ) { |
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360 | FeatureStoreTransform transform = (FeatureStoreTransform) transforms.get(this.transforms.size()-1); |
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361 | if( transform.hasDynValue(name) ) {
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362 | return true; |
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363 | } |
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364 | } |
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365 | return false; |
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366 | } |
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367 | |||
368 | public Object clone() throws CloneNotSupportedException { |
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369 | |||
370 | DefaultFeatureStoreTransforms cloned = (DefaultFeatureStoreTransforms) super.clone();
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371 | cloned.transforms = new ArrayList(); |
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372 | int n = this.transforms.size(); |
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373 | for (int i=0; i<n; i++) { |
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374 | cloned.transforms.add(((FeatureStoreTransform) this.transforms.get(i)).clone());
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375 | } |
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376 | cloned.lastTransformStack = null;
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377 | |||
378 | return cloned;
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379 | } |
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380 | |||
381 | } |