Application: gvSIG desktop

import org.gvsig.fmap.dal.feature.EditableFeature;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureAttributeGetter;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.impl.DefaultEditableFeature;

            if (f == null) {

                myFeature = (DefaultFeature)

                    this.fset.transform.applyTransform(myFeature,

                        fset.getDefaultFeatureType());

            } else {

                /*

                 * In this case "f != null" the data comes from the featureManager,

                 * so it is data inserted/updated by the user, so we must

                 * overwrite the data after applying the transformations

                 * because the transformations can be "Adding field"

                 * and are necessary in some cases:

                 */

                DefaultFeature saved_feat = (DefaultFeature) myFeature.getCopy();

                myFeature = (DefaultFeature)

                    this.fset.transform.applyTransform(myFeature,

                        fset.getDefaultFeatureType());

                myFeature = overwrite(myFeature, saved_feat);

            }

            return myFeature;

    private DefaultFeature overwrite(

        DefaultFeature old_feat,

        DefaultFeature new_feat) {

        DefaultEditableFeature resp = (DefaultEditableFeature) old_feat.getEditable();

        FeatureType fty = new_feat.getData().getType();

        FeatureAttributeDescriptor[] atts = fty.getAttributeDescriptors();

        for (int i=0; i<atts.length; i++) {

            try {

                resp.set(atts[i].getName(), new_feat.get(atts[i].getName()));

            } catch (Exception exc) {

                // Field not found

            }

        }

        return (DefaultFeature) resp.getNotEditableCopy();

    }