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.

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 {DiSiD Technologies}  {Add pagination to a FeatureCollection}

 */

package org.gvsig.fmap.dal.feature.paging;

import java.util.Iterator;

import java.util.List;

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

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

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

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

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

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

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

import org.gvsig.tools.dynobject.DynObjectPagingHelper;

import org.gvsig.tools.exception.BaseException;

/**

 * Helper interface to access the values of a FeatureCollection by position.

 *

 * @author gvSIG team

 */

public interface FeaturePagingHelper extends DynObjectPagingHelper {

    /**

     * Returns the Feature located at the index position.

     *

     * @param index to locate the Feature in the Collection

     * @return the Feature located at the index position

     * @throws BaseException if there is an error getting the Feature

     */

    Feature getFeatureAt(long index) throws BaseException;

    /**

     * Returns all the values of the current loaded page.

     *

     * @return all the values of the current loaded page

     */

    Feature[] getCurrentPageFeatures();

    /**

     * Returns the FeatureStore used to fetch the data.

     *

     * @return the FeatureStore

     */

    FeatureStore getFeatureStore();

    /**

     * Returns the query used to load the Features.

     *

     * @return the query used to load the Features

     */

    FeatureQuery getFeatureQuery();

    /**

     * Returns the FeatureType used of the data.

     *

     * @return the FeatureType of the data

     */

    FeatureType getFeatureType();

    /**

     * Updates a {@link Feature} with the given {@link EditableFeature} in the

     * current {@link FeatureSet}. <br>

     *

     * @param feature an instance of {@link EditableFeature} with which to

     * update the associated {@link Feature}.

     *

     * @throws BaseException

     *

     * @see {@link FeatureSet#update(EditableFeature)}

     *      {@link FeaturePagingHelper#getFeatureSet()}

     */

    void update(EditableFeature feature) throws BaseException;

    /**

     * Deletes a {@link Feature} from current {@link FeatureSet}.<br>

     *

     * @param feature the {@link Feature} to delete.

     *

     * @throws BaseException

     *

     * @see {@link FeatureSet#delete(Feature)}

     *      {@link FeaturePagingHelper#getFeatureSet()}

     */

    void delete(Feature feature) throws BaseException;

    /**

     * Inserts a new feature in this {@link FeatureSet}. It needs to be an

     * instance of {@link EditableFeature} as it has not been stored yet.<br>

     *

     * Any {@link Iterator} from this store that was still in use can will not

     * reflect this change.

     *

     * @param feature the {@link EditableFeature} to insert.

     *

     * @throws BaseException

     *

     * @see {@link FeatureSet#insert(EditableFeature)}

     *      {@link FeaturePagingHelper#getFeatureSet()}

     */

    void insert(EditableFeature feature) throws BaseException;

    /**

     * Sets that the selected Features get returned first.

     */

    void setSelectionUp(boolean selectionUp);

    boolean isSelectionUp();

    /**

     * Return a List of Fearures with the contents of this PagingHelper

     *

     * @return List of Features

     */

    List asList();

    /**

     * Return a List of DynObjects with the contents of this PagingHelper

     *

     * @return List of DynObjects

     */

    List asListOfDynObjects();

    public FeatureSelection getSelection();

    public void setSelection(FeatureSelection selection);

    public boolean isEmpty();

}