Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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 2

 * 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.

 * 

 */

package org.gvsig.fmap.dal.feature.impl.featureset;

import java.util.Iterator;

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

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

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

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

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

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

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

import org.gvsig.fmap.dal.feature.spi.FeatureProvider;

import org.gvsig.tools.dispose.DisposableIterator;

import org.gvsig.tools.exception.BaseException;

/**

 * Iterator for stores in edition mode.

 * 

 * @author gvSIG Team

 * @version $Id$

 * @deprecated use the {@link FastEditedIterator} instead

 */

public class EditedIterator extends FilteredIterator {

    private Iterator newsFeatures;

    private boolean featureIsNew;

    private DefaultFeatureStore store;

    protected FeatureManager featureManager;

    public EditedIterator(DefaultFeatureSet featureSet) {

        super(featureSet);

        this.store = featureSet.store;

        this.featureManager = this.store.getFeatureManager();

    }

    public EditedIterator(DefaultFeatureSet featureSet, long index)

        throws DataException {

        this(featureSet);

        this.newsFeatures = null;

        if (index > 0) {

            if (featureSet.provider.canIterateFromIndex()) {

                try {

                    this.iterator = featureSet.provider.iterator(index);

                } catch (IllegalArgumentException e) {

                    this.iterator = featureSet.provider.iterator();

                    skypto(index);

                } catch (UnsupportedOperationException e) {

                    this.iterator = featureSet.provider.iterator();

                    skypto(index);

                }

            } else {

                this.iterator = featureSet.provider.iterator();

                skypto(index);

            }

        } else {

            this.iterator = featureSet.provider.iterator();

        }

    }

    public void remove() {

            if(this.getIterator() == newsFeatures) {

                    newsFeatures.remove();

            } else {

                    super.remove();

            }

    }

    public boolean hasNext() {

        if (store.isEditing()) {

            return super.hasNext();

        } else {

            throw new ConcurrentDataModificationException(store.getFullName());

        }

    }

    public Object next() {

        if (store.isEditing()) {

            return super.next();

        } else {

            throw new ConcurrentDataModificationException(store.getFullName());

        }

    }

    protected void setNewsFeatures(Iterator newsFeatures) {

        this.newsFeatures = newsFeatures;

    }

    protected boolean isFeatureIsNew() {

        return featureIsNew;

    }

    protected Iterator getIterator() {

        if (this.featureIsNew) {

            return this.newsFeatures;

        } else

            if (this.iterator.hasNext()) {

                featureIsNew = false;

                return this.iterator;

            } else {

                featureIsNew = true;

                this.newsFeatures = this.featureManager.getInserted();

                return this.newsFeatures;

            }

    }

    protected DefaultFeature createFeature(FeatureProvider data) throws DataException {

        DefaultFeature f = null;

        data.setNew(featureIsNew);

        try {

            FeatureReference ref = new DefaultFeatureReference(store, data);

            f =

                (DefaultFeature) this.featureManager.get(ref, store,

                    data.getType());

        } catch (DataException e) {

            RuntimeException ex = new RuntimeException();

            e.initCause(e);

            throw ex;

        }

        if (f == null) {

            // La feature no se ha editado.

            f = new DefaultFeature(store, data);

        }

        if (this.fset.transform.isEmpty()) {

            return f;

        } else {

            return (DefaultFeature) this.fset.transform.applyTransform(

                    f, fset.getDefaultFeatureType());

        }     

    }

    protected boolean isDeletedOrHasToSkip(FeatureProvider data) {

        // XXX

        // si recorriendo los originales nos

        // encontramos uno nuevo, no lo devolvemos

        // porque se recorrera mas tarde.

        // Esto es una interaccion con los indices

        // ya que estos contienen todas las features ya

        // sea nuevas o no

        if (data.isNew() && !featureIsNew) {

            return true;

        }

        FeatureReference ref = new DefaultFeatureReference(store, data);

        return this.featureManager.isDeleted(ref);

    }

    protected void doDispose() throws BaseException {

        super.doDispose();

        if (newsFeatures instanceof DisposableIterator) {

            ((DisposableIterator) newsFeatures).dispose();

        }

        newsFeatures = null;

        this.featureManager = null;

        this.store = null;

    }

}