Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.vectorTools.removeRepeatedGeometries;

import java.util.HashMap;

import com.vividsolutions.jts.geom.Geometry;

import es.unex.sextante.additionalInfo.AdditionalInfoVectorLayer;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IFeature;

import es.unex.sextante.dataObjects.IFeatureIterator;

import es.unex.sextante.dataObjects.IVectorLayer;

import es.unex.sextante.dataObjects.vectorFilters.BoundingBoxFilter;

import es.unex.sextante.exceptions.GeoAlgorithmExecutionException;

import es.unex.sextante.exceptions.RepeatedParameterNameException;

import es.unex.sextante.outputs.OutputVectorLayer;

public class RemoveRepeatedGeometriesAlgorithm

         extends

            GeoAlgorithm {

   public static final String LAYER  = "LAYER";

   public static final String RESULT = "RESULT";

   @Override

   public void defineCharacteristics() {

      setName(Sextante.getText("Remove_repeated_geometries"));

      setGroup(Sextante.getText("Tools_for_vector_layers"));

      setUserCanDefineAnalysisExtent(true);

      try {

         m_Parameters.addInputVectorLayer(LAYER, Sextante.getText("Input_layer"), AdditionalInfoVectorLayer.SHAPE_TYPE_ANY, true);

         addOutputVectorLayer(RESULT, Sextante.getText("Unique_Geometries"), OutputVectorLayer.SHAPE_TYPE_UNDEFINED, LAYER);

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

   }

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      int i = 0;

      final IVectorLayer layerIn = m_Parameters.getParameterValueAsVectorLayer(RemoveRepeatedGeometriesAlgorithm.LAYER);

      if (!m_bIsAutoExtent) {

         layerIn.addFilter(new BoundingBoxFilter(m_AnalysisExtent));

      }

      final IVectorLayer driver = getNewVectorLayer(RemoveRepeatedGeometriesAlgorithm.RESULT,

               Sextante.getText("Unique_Geometries"), layerIn.getShapeType(), layerIn.getFieldTypes(), layerIn.getFieldNames());

      //Map geometries using WKT format to index

      final HashMap geomHashMap = new HashMap();

      final int iTotal = layerIn.getShapesCount();

      final IFeatureIterator iter = layerIn.iterator();

      while (iter.hasNext() && setProgress(i, iTotal)) {

         final IFeature feat = iter.next();

         final Geometry geom = feat.getGeometry();

         final Object[] values = feat.getRecord().getValues();

         if (geomHashMap.containsKey(geom.toText())) {

            continue;

         }

         else {

            geomHashMap.put(geom.toText(), true);

         }

         driver.addFeature(geom, values);

         i++;

      }

      iter.close();

      return !m_Task.isCanceled();

   }

}