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svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.api / src / main / java / org / gvsig / fmap / dal / feature / FeatureReference.java @ 40559

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/**
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 * gvSIG. Desktop Geographic Information System.
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 *
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 * Copyright (C) 2007-2013 gvSIG Association.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 3
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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 * MA  02110-1301, USA.
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 *
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 * For any additional information, do not hesitate to contact us
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 * at info AT gvsig.com, or visit our website www.gvsig.com.
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 */
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package org.gvsig.fmap.dal.feature;
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import org.gvsig.fmap.dal.exception.DataException;
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/**
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 * A FeatureReference is a lightweight unique identifier for a
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 * {@link Feature}. It is used to keep references on features
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 * without maintaining the whole feature in memory, thus improving
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 * memory needs.
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 * 
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 */
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public interface FeatureReference {
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        /**
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         * Returns the referenced {@link Feature}
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         * 
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         * @return the {@link Feature} identified by this {@link FeatureReference}
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         * 
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         * @throws DataException
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         */
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        public Feature getFeature() throws DataException;
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        /**
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         * Returns the referenced {@link Feature}
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         * 
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         * @param featureType
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         *            The {@link FeatureType} to which the referenced
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         *            {@link Feature} belongs.
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         * 
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         * @return the {@link Feature} identified by this {@link FeatureReference}
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         * 
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         * @throws DataException
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         */
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        public Feature getFeature(FeatureType featureType) throws DataException;
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}