Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.geometrymeasurement.app.extension.utils;

import java.util.Iterator;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.app.project.documents.table.TableOperations;

import org.gvsig.fmap.dal.exception.DataException;

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

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

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

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

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

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

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

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

import org.gvsig.fmap.dal.feature.exception.NeedEditingModeException;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.tools.dataTypes.DataTypes;

import org.gvsig.tools.dispose.DisposableIterator;

/**

 * Andami extension to show PerimeterMeasurementExtension in the application.

 * 

 * @author gvSIG Team

 * @version $Id$

 */

public class Operations {

    private static final Logger LOG = LoggerFactory.getLogger(Operations.class);

    private static final int NUM_DECIMALS = 5;

    public void addDoubleFieldFromOperation(FeatureStore featureStore,

        String fieldName, String operationName) throws DataException,

        GeometryOperationNotSupportedException, GeometryOperationException {

        boolean isEditing = false;

        if (featureStore.isEditing()) {

            isEditing = true;

        } else {

            featureStore.edit();

        }

        featureStore.beginEditingGroup(operationName);

        // Adding the new attribute type

        FeatureType featureType = featureStore.getDefaultFeatureType();

        EditableFeatureType editableFeatureType = featureType.getEditable();

        String realFieldName = getFieldName(featureStore, fieldName, 0);

        EditableFeatureAttributeDescriptor editableFeatureAttributeDescriptor =

            editableFeatureType.add(realFieldName, DataTypes.DOUBLE);

        editableFeatureAttributeDescriptor.setPrecision(NUM_DECIMALS);

        editableFeatureAttributeDescriptor

            .setSize(TableOperations.MAX_FIELD_LENGTH);

        featureStore.update(editableFeatureType);

        DisposableIterator disposableIterator = null;

        FeatureSet featureSet = null;

        try {

            // Adding the attribute value

            featureSet = featureStore.getFeatureSet();

            disposableIterator = featureSet.fastIterator();

            while (disposableIterator.hasNext()) {

                Feature feature = (Feature) disposableIterator.next();

                EditableFeature editableFeature = feature.getEditable();

                editableFeature.setDouble(realFieldName, (Double) feature

                    .getDefaultGeometry().invokeOperation(operationName, null));

                featureSet.update(editableFeature);

            }

        } finally {

            if (disposableIterator != null) {

                disposableIterator.dispose();

            }

            if (featureSet != null) {

                featureSet.dispose();

            }

            try {

                featureStore.endEditingGroup();

            } catch (NeedEditingModeException e) {

                LOG.error("Exception endEditingGroup", e);

            }

        }

        if (!isEditing) {

            featureStore.finishEditing();

        }

    }

    public String getFieldName(FeatureStore featureStore, String fieldName,

        int index) throws DataException {

        String fullName = fieldName;

        if (index != 0) {

            fullName = fullName + index;

        }

        @SuppressWarnings("unchecked")

        Iterator<FeatureAttributeDescriptor> it =

            featureStore.getDefaultFeatureType().iterator();

        while (it.hasNext()) {

            FeatureAttributeDescriptor featureAttributeDescriptor = it.next();

            if (featureAttributeDescriptor.getName().equals(fullName)) {

                return getFieldName(featureStore, fieldName, index + 1);

            }

        }

        return fullName;

    }

    /**

     * @param featureStore

     * @param string

     * @param string2

     * @throws DataException

     */

    public void addXYPoints(FeatureStore featureStore, String xFieldName,

        String yFieldName) throws DataException {

        boolean isEditing = false;

        if (featureStore.isEditing()) {

            isEditing = true;

        } else {

            featureStore.edit();

        }

        // Adding the new attribute type

        FeatureType featureType = featureStore.getDefaultFeatureType();

        EditableFeatureType editableFeatureType = featureType.getEditable();

        String realXFieldName = getFieldName(featureStore, xFieldName, 0);

        EditableFeatureAttributeDescriptor editableFeatureAttributeDescriptor =

            editableFeatureType.add(realXFieldName, DataTypes.DOUBLE);

        editableFeatureAttributeDescriptor.setPrecision(NUM_DECIMALS);

        editableFeatureAttributeDescriptor

            .setSize(TableOperations.MAX_FIELD_LENGTH);

        String realYFieldName = getFieldName(featureStore, yFieldName, 0);

        editableFeatureAttributeDescriptor =

            editableFeatureType.add(realYFieldName, DataTypes.DOUBLE);

        editableFeatureAttributeDescriptor.setPrecision(NUM_DECIMALS);

        editableFeatureAttributeDescriptor

            .setSize(TableOperations.MAX_FIELD_LENGTH);

        featureStore.update(editableFeatureType);

        // Adding the attribute value

        FeatureSet featureSet = featureStore.getFeatureSet();

        DisposableIterator disposableIterator = featureSet.fastIterator();

        while (disposableIterator.hasNext()) {

            Feature feature = (Feature) disposableIterator.next();

            EditableFeature editableFeature = feature.getEditable();

            editableFeature.setDouble(realXFieldName,

                ((Point) feature.getDefaultGeometry()).getX());

            editableFeature.setDouble(realYFieldName,

                ((Point) feature.getDefaultGeometry()).getY());

            featureSet.update(editableFeature);

        }

        featureSet.dispose();

        if (!isEditing) {

            featureStore.finishEditing();

        }

    }

}