Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.vectorTools.exportVector;

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.FileOutputChannel;

import es.unex.sextante.outputs.Output;

public class ExportVectorAlgorithm

         extends

            GeoAlgorithm {

   public static final String LAYER  = "LAYER";

   public static final String RESULT = "RESULT";

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      final IVectorLayer layer = m_Parameters.getParameterValueAsVectorLayer(LAYER);

      Output out = m_OutputObjects.getOutput(RESULT);

      final String sFilename = ((FileOutputChannel) out.getOutputChannel()).getFilename();

      if (!m_bIsAutoExtent) {

         layer.addFilter(new BoundingBoxFilter(m_AnalysisExtent));

      }

      if (sFilename != null) {

         final IVectorLayer output = getNewVectorLayer(RESULT, Sextante.getText("Result"), layer.getShapeType(),

                  layer.getFieldTypes(), layer.getFieldNames());

         final int iShapeCount = layer.getShapesCount();

         int i = 0;

         final IFeatureIterator iter = layer.iterator();

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

            final IFeature feature = iter.next();

            output.addFeature(feature);

            i++;

         }

         try {

            output.postProcess();

         }

         catch (final Exception e) {

            throw new GeoAlgorithmExecutionException(e.getMessage());

         }

      }

      //We do not want the result to be added to the view

      out = m_OutputObjects.getOutput(RESULT);

      out.setOutputObject(null);

      return !m_Task.isCanceled();

   }

   @Override

   public void defineCharacteristics() {

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

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

      setUserCanDefineAnalysisExtent(true);

      try {

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

         addOutputVectorLayer(RESULT, Sextante.getText("Result"));

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

   }

   @Override

   public boolean isSuitableForModelling() {

      return false;

   }

}