Package org.geomajas.command.feature

Source Code of org.geomajas.command.feature.PersistTransactionCommand

/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.command.feature;

import java.util.ArrayList;
import java.util.List;

import org.geomajas.annotation.Api;
import org.geomajas.command.Command;
import org.geomajas.command.dto.PersistTransactionRequest;
import org.geomajas.command.dto.PersistTransactionResponse;
import org.geomajas.global.ExceptionCode;
import org.geomajas.global.GeomajasException;
import org.geomajas.layer.VectorLayerService;
import org.geomajas.layer.feature.Feature;
import org.geomajas.layer.feature.FeatureTransaction;
import org.geomajas.layer.feature.InternalFeature;
import org.geomajas.service.DtoConverterService;
import org.geomajas.service.GeoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

/**
* A securityException will fail all, not just the feature(s) which are not allowed.
*
* @author Jan De Moerloose
* @author Pieter De Graef
* @author Joachim Van der Auwera
* @since 1.6.0
*/
@Api
@Component()
@Transactional(rollbackFor = { Exception.class })
public class PersistTransactionCommand implements Command<PersistTransactionRequest, PersistTransactionResponse> {

  @Autowired
  private GeoService geoService;

  @Autowired
  private DtoConverterService converter;

  @Autowired
  private VectorLayerService layerService;

  public PersistTransactionResponse getEmptyCommandResponse() {
    return new PersistTransactionResponse();
  }

  public void execute(PersistTransactionRequest request, PersistTransactionResponse response) throws Exception {
    if (null == request.getFeatureTransaction()) {
      throw new GeomajasException(ExceptionCode.PARAMETER_MISSING, "featureTransaction");
    }
    if (null == request.getFeatureTransaction().getLayerId()) {
      throw new GeomajasException(ExceptionCode.PARAMETER_MISSING, "featureTransaction.layerId");
    }
    if (null == request.getCrs()) {
      throw new GeomajasException(ExceptionCode.PARAMETER_MISSING, "crs");
    }
    FeatureTransaction featureTransaction = request.getFeatureTransaction();
    if (featureTransaction == null) {
      return;
    }

    List<InternalFeature> oldFeatures = new ArrayList<InternalFeature>();
    List<InternalFeature> newFeatures = new ArrayList<InternalFeature>();
    if (featureTransaction.getOldFeatures() != null) {
      for (int i = 0; i < featureTransaction.getOldFeatures().length; i++) {
        oldFeatures.add(converter.toInternal(featureTransaction.getOldFeatures()[i]));
      }
    }
    if (featureTransaction.getNewFeatures() != null) {
      for (int i = 0; i < featureTransaction.getNewFeatures().length; i++) {
        newFeatures.add(converter.toInternal(featureTransaction.getNewFeatures()[i]));
      }
    }

    layerService.saveOrUpdate(featureTransaction.getLayerId(), geoService.getCrs(request.getCrs()), oldFeatures,
        newFeatures);

    // Apply the new set of InternalFeatures onto the transaction: (ID may be filled in now)
    if (featureTransaction.getNewFeatures() != null) {
      Feature[] resultFeatures = new Feature[newFeatures.size()];
      for (int i = 0; i < newFeatures.size(); i++) {
        InternalFeature internalFeature = newFeatures.get(i);
        resultFeatures[i] = converter.toDto(internalFeature);
      }
      featureTransaction.setNewFeatures(resultFeatures);
    }
    response.setFeatureTransaction(featureTransaction);
  }
}
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