svn-gvsig-desktop / branches / v2_0_0_prep / extensions / extDalTransformEventTheme / src / org / gvsig / app / eventtheme / dal / feature / EventThemeTransform.java @ 29791
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 {Iver T.I.} {Task}
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*/
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package org.gvsig.app.eventtheme.dal.feature; |
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import java.util.Arrays; |
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import org.gvsig.fmap.crs.CRSFactory; |
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import org.gvsig.fmap.dal.DataStore; |
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import org.gvsig.fmap.dal.DataTypes; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.AbstractFeatureStoreTransform; |
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import org.gvsig.fmap.dal.feature.EditableFeature; |
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import org.gvsig.fmap.dal.feature.EditableFeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.EditableFeatureType; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.GeometryManager; |
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import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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import org.gvsig.fmap.geom.Geometry.TYPES; |
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import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.tools.persistence.PersistenceException; |
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import org.gvsig.tools.persistence.PersistentState; |
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/**
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* This class implements a transformation for a events theme. The original
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* {@link DataStore} have to have a couple of attributes, one with the X
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* coordinate and the second one with the Y coordinate. The result of
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* the transformation is a {@link DataStore} that has a new geometric
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* attribute and its value is a point with the coordinates specified in
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* the original {@link DataStore}.
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* @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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*/
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public class EventThemeTransform extends AbstractFeatureStoreTransform { |
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private String xFieldName = null; |
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private String yFieldName = null; |
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private String geometryFieldName = null; |
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private FeatureType originalFeatureType;
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private GeometryManager geometryManager = GeometryLocator.getGeometryManager();
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public EventThemeTransform() {
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super();
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geometryManager = GeometryLocator.getGeometryManager(); |
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} |
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/**
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* This method initializes the transformation, sets the name of the parameters and
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* sets the value of the {@link FeatureType} returned by the transformation.
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* @param store
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* The original store.
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* @param geometryFieldName
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* The field that contains the geometric attribute.
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* @param xFieldName
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* The field that contains the X coordinate.
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* @param yFieldName
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* The field that contains the Y coordinate.
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* @throws DataException
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*/
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public void initialize(FeatureStore store, String geometryFieldName, String xFieldName, String yFieldName) throws DataException{ |
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setFeatureStore(store); |
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this.xFieldName = xFieldName;
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this.yFieldName = yFieldName;
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if ((geometryFieldName == null) || (geometryFieldName.equals(""))){ |
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this.geometryFieldName = "the_geom"; |
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}else{
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this.geometryFieldName = geometryFieldName;
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} |
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this.originalFeatureType = this.getFeatureStore() |
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.getDefaultFeatureType(); |
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EditableFeatureType type = originalFeatureType.getEditable(); |
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if (type.get(this.geometryFieldName) == null){ |
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EditableFeatureAttributeDescriptor attributeDescriptor = type.add(this.geometryFieldName, DataTypes.GEOMETRY);
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attributeDescriptor.setGeometryType(TYPES.POINT); |
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attributeDescriptor.setGeometrySubType(SUBTYPES.GEOM2D); |
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attributeDescriptor.setSRS(CRSFactory.getCRS("EPSG:23030"));
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} |
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type.setDefaultGeometryAttributeName(this.geometryFieldName);
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FeatureType[] types = new FeatureType[] { type.getNotEditableCopy() }; |
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setFeatureTypes(Arrays.asList(types), types[0]); |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.feature.FeatureStoreTransform#applyTransform(org.gvsig.fmap.dal.feature.Feature, org.gvsig.fmap.dal.feature.EditableFeature)
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*/
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public void applyTransform(Feature source, EditableFeature target) |
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throws DataException {
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this.copySourceToTarget(source, target);
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try {
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Point point = geometryManager.createPoint(source.getDouble(xFieldName),
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source.getDouble(yFieldName), |
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SUBTYPES.GEOM2D); |
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target.set(geometryFieldName, point); |
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target.setDefaultGeometry(point); |
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} catch (CreateGeometryException e) {
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throw new org.gvsig.fmap.dal.feature.exception.CreateGeometryException(TYPES.POINT, SUBTYPES.GEOM2D, e); |
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} |
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} |
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/**
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* @param source
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* @param target
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*/
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private void copySourceToTarget(Feature source, EditableFeature target) { |
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FeatureAttributeDescriptor attr, attrTrg; |
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FeatureType ftSrc = source.getType(); |
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FeatureType ftTrg = target.getType(); |
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for (int i = 0; i < source.getType().size(); i++) { |
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attr = ftSrc.getAttributeDescriptor(i); |
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if (ftTrg.getIndex(attr.getName()) > -1) { |
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try {
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target.set(attr.getName(), source.get(i)); |
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} catch (IllegalArgumentException e) { |
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attrTrg = ftTrg.getAttributeDescriptor(attr.getName()); |
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target.set(attrTrg.getIndex(), attrTrg.getDefaultValue()); |
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} |
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} |
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} |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.feature.FeatureStoreTransform#getSourceFeatureTypeFrom(org.gvsig.fmap.dal.feature.FeatureType)
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*/
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public FeatureType getSourceFeatureTypeFrom(FeatureType targetFeatureType) {
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return this.originalFeatureType; |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.feature.FeatureStoreTransform#isTransformsOriginalValues()
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*/
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public boolean isTransformsOriginalValues() { |
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return true; |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.tools.persistence.Persistent#saveToState(org.gvsig.tools.persistence.PersistentState)
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*/
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public void saveToState(PersistentState state) throws PersistenceException { |
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// TODO Auto-generated method stub
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} |
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/* (non-Javadoc)
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* @see org.gvsig.tools.persistence.Persistent#setState(org.gvsig.tools.persistence.PersistentState)
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*/
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public void setState(PersistentState state) throws PersistenceException { |
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// TODO Auto-generated method stub
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} |
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/* (non-Javadoc)
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* @see org.gvsig.tools.persistence.Persistent#loadFromState(org.gvsig.tools.persistence.PersistentState)
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*/
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public void loadFromState(PersistentState state) |
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throws PersistenceException {
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// TODO Auto-generated method stub
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} |
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} |
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