svn-gvsig-desktop / branches / v2_0_0_prep / extensions / extDalTransformEventTheme / src / org / gvsig / app / eventtheme / dal / feature / EventThemeTransform.java @ 29791
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1 | 28895 | jpiera | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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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 2
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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 | */
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22 | |||
23 | /*
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24 | * AUTHORS (In addition to CIT):
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25 | * 2009 {Iver T.I.} {Task}
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26 | */
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27 | |||
28 | package org.gvsig.app.eventtheme.dal.feature; |
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29 | |||
30 | import java.util.Arrays; |
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31 | |||
32 | 29791 | jpiera | import org.gvsig.fmap.crs.CRSFactory; |
33 | 29714 | jpiera | import org.gvsig.fmap.dal.DataStore; |
34 | 28895 | jpiera | import org.gvsig.fmap.dal.DataTypes; |
35 | import org.gvsig.fmap.dal.exception.DataException; |
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36 | import org.gvsig.fmap.dal.feature.AbstractFeatureStoreTransform; |
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37 | import org.gvsig.fmap.dal.feature.EditableFeature; |
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38 | import org.gvsig.fmap.dal.feature.EditableFeatureAttributeDescriptor; |
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39 | import org.gvsig.fmap.dal.feature.EditableFeatureType; |
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40 | import org.gvsig.fmap.dal.feature.Feature; |
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41 | import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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42 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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43 | import org.gvsig.fmap.dal.feature.FeatureType; |
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44 | import org.gvsig.fmap.geom.GeometryLocator; |
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45 | import org.gvsig.fmap.geom.GeometryManager; |
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46 | import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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47 | import org.gvsig.fmap.geom.Geometry.TYPES; |
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48 | import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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49 | import org.gvsig.fmap.geom.primitive.Point; |
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50 | import org.gvsig.tools.persistence.PersistenceException; |
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51 | import org.gvsig.tools.persistence.PersistentState; |
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52 | |||
53 | /**
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54 | 29714 | jpiera | * This class implements a transformation for a events theme. The original
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55 | * {@link DataStore} have to have a couple of attributes, one with the X
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56 | * coordinate and the second one with the Y coordinate. The result of
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57 | * the transformation is a {@link DataStore} that has a new geometric
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58 | * attribute and its value is a point with the coordinates specified in
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59 | * the original {@link DataStore}.
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60 | 28895 | jpiera | * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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61 | */
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62 | public class EventThemeTransform extends AbstractFeatureStoreTransform { |
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63 | private String xFieldName = null; |
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64 | private String yFieldName = null; |
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65 | private String geometryFieldName = null; |
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66 | private FeatureType originalFeatureType;
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67 | 29791 | jpiera | private GeometryManager geometryManager = GeometryLocator.getGeometryManager();
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68 | 28895 | jpiera | |
69 | public EventThemeTransform() {
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70 | super();
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71 | 29791 | jpiera | geometryManager = GeometryLocator.getGeometryManager(); |
72 | 28895 | jpiera | } |
73 | |||
74 | 29714 | jpiera | /**
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75 | * This method initializes the transformation, sets the name of the parameters and
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76 | * sets the value of the {@link FeatureType} returned by the transformation.
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77 | * @param store
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78 | 29715 | jpiera | * The original store.
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79 | 29714 | jpiera | * @param geometryFieldName
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80 | 29715 | jpiera | * The field that contains the geometric attribute.
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81 | 29714 | jpiera | * @param xFieldName
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82 | 29715 | jpiera | * The field that contains the X coordinate.
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83 | 29714 | jpiera | * @param yFieldName
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84 | 29715 | jpiera | * The field that contains the Y coordinate.
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85 | 29714 | jpiera | * @throws DataException
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86 | */
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87 | 28895 | jpiera | public void initialize(FeatureStore store, String geometryFieldName, String xFieldName, String yFieldName) throws DataException{ |
88 | setFeatureStore(store); |
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89 | this.xFieldName = xFieldName;
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90 | this.yFieldName = yFieldName;
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91 | if ((geometryFieldName == null) || (geometryFieldName.equals(""))){ |
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92 | this.geometryFieldName = "the_geom"; |
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93 | }else{
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94 | this.geometryFieldName = geometryFieldName;
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95 | } |
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96 | this.originalFeatureType = this.getFeatureStore() |
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97 | .getDefaultFeatureType(); |
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98 | |||
99 | 29791 | jpiera | EditableFeatureType type = originalFeatureType.getEditable(); |
100 | 28895 | jpiera | if (type.get(this.geometryFieldName) == null){ |
101 | EditableFeatureAttributeDescriptor attributeDescriptor = type.add(this.geometryFieldName, DataTypes.GEOMETRY);
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102 | attributeDescriptor.setGeometryType(TYPES.POINT); |
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103 | 29791 | jpiera | attributeDescriptor.setGeometrySubType(SUBTYPES.GEOM2D); |
104 | attributeDescriptor.setSRS(CRSFactory.getCRS("EPSG:23030"));
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105 | 28895 | jpiera | } |
106 | |||
107 | type.setDefaultGeometryAttributeName(this.geometryFieldName);
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108 | FeatureType[] types = new FeatureType[] { type.getNotEditableCopy() }; |
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109 | setFeatureTypes(Arrays.asList(types), types[0]); |
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110 | } |
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111 | |||
112 | /* (non-Javadoc)
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113 | * @see org.gvsig.fmap.dal.feature.FeatureStoreTransform#applyTransform(org.gvsig.fmap.dal.feature.Feature, org.gvsig.fmap.dal.feature.EditableFeature)
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114 | */
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115 | public void applyTransform(Feature source, EditableFeature target) |
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116 | throws DataException {
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117 | this.copySourceToTarget(source, target);
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118 | 29791 | jpiera | |
119 | 28895 | jpiera | try {
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120 | 29791 | jpiera | Point point = geometryManager.createPoint(source.getDouble(xFieldName),
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121 | source.getDouble(yFieldName), |
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122 | SUBTYPES.GEOM2D); |
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123 | 28895 | jpiera | target.set(geometryFieldName, point); |
124 | target.setDefaultGeometry(point); |
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125 | } catch (CreateGeometryException e) {
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126 | throw new org.gvsig.fmap.dal.feature.exception.CreateGeometryException(TYPES.POINT, SUBTYPES.GEOM2D, e); |
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127 | } |
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128 | } |
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129 | |||
130 | /**
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131 | * @param source
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132 | * @param target
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133 | */
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134 | private void copySourceToTarget(Feature source, EditableFeature target) { |
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135 | FeatureAttributeDescriptor attr, attrTrg; |
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136 | FeatureType ftSrc = source.getType(); |
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137 | FeatureType ftTrg = target.getType(); |
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138 | |||
139 | |||
140 | for (int i = 0; i < source.getType().size(); i++) { |
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141 | attr = ftSrc.getAttributeDescriptor(i); |
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142 | if (ftTrg.getIndex(attr.getName()) > -1) { |
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143 | try {
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144 | target.set(attr.getName(), source.get(i)); |
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145 | } catch (IllegalArgumentException e) { |
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146 | attrTrg = ftTrg.getAttributeDescriptor(attr.getName()); |
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147 | target.set(attrTrg.getIndex(), attrTrg.getDefaultValue()); |
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148 | } |
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149 | |||
150 | } |
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151 | } |
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152 | |||
153 | } |
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154 | |||
155 | /* (non-Javadoc)
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156 | * @see org.gvsig.fmap.dal.feature.FeatureStoreTransform#getSourceFeatureTypeFrom(org.gvsig.fmap.dal.feature.FeatureType)
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157 | */
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158 | public FeatureType getSourceFeatureTypeFrom(FeatureType targetFeatureType) {
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159 | return this.originalFeatureType; |
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160 | } |
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161 | |||
162 | /* (non-Javadoc)
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163 | * @see org.gvsig.fmap.dal.feature.FeatureStoreTransform#isTransformsOriginalValues()
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164 | */
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165 | public boolean isTransformsOriginalValues() { |
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166 | return true; |
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167 | } |
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168 | |||
169 | /* (non-Javadoc)
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170 | * @see org.gvsig.tools.persistence.Persistent#saveToState(org.gvsig.tools.persistence.PersistentState)
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171 | */
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172 | public void saveToState(PersistentState state) throws PersistenceException { |
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173 | // TODO Auto-generated method stub
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174 | |||
175 | } |
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176 | |||
177 | /* (non-Javadoc)
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178 | * @see org.gvsig.tools.persistence.Persistent#setState(org.gvsig.tools.persistence.PersistentState)
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179 | */
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180 | public void setState(PersistentState state) throws PersistenceException { |
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181 | // TODO Auto-generated method stub
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182 | |||
183 | } |
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184 | |||
185 | /* (non-Javadoc)
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186 | * @see org.gvsig.tools.persistence.Persistent#loadFromState(org.gvsig.tools.persistence.PersistentState)
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187 | */
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188 | public void loadFromState(PersistentState state) |
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189 | throws PersistenceException {
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190 | // TODO Auto-generated method stub
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191 | |||
192 | } |
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193 | |||
194 | } |