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 @ 46875
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| 1 | 40559 | jjdelcerro | /**
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| 2 | * gvSIG. Desktop Geographic Information System.
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| 3 | *
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| 4 | * Copyright (C) 2007-2013 gvSIG Association.
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | * as published by the Free Software Foundation; either version 3
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| 9 | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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| 19 | * MA 02110-1301, USA.
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| 20 | *
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| 21 | * For any additional information, do not hesitate to contact us
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| 22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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| 23 | */
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| 24 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.feature; |
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| 26 | import org.gvsig.fmap.dal.exception.DataException; |
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| 27 | |||
| 28 | /**
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| 29 | * A FeatureReference is a lightweight unique identifier for a
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| 30 | * {@link Feature}. It is used to keep references on features
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| 31 | * without maintaining the whole feature in memory, thus improving
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| 32 | * memory needs.
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| 33 | *
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| 34 | */
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| 35 | public interface FeatureReference { |
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| 36 | |||
| 37 | /**
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| 38 | * Returns the referenced {@link Feature}
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| 39 | *
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| 40 | * @return the {@link Feature} identified by this {@link FeatureReference}
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| 41 | *
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| 42 | * @throws DataException
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| 43 | */
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| 44 | public Feature getFeature() throws DataException; |
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| 45 | 45425 | jjdelcerro | public Feature getFeatureQuietly();
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| 46 | 40435 | jjdelcerro | |
| 47 | /**
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| 48 | * Returns the referenced {@link Feature}
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| 49 | *
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| 50 | * @param featureType
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| 51 | * The {@link FeatureType} to which the referenced
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| 52 | * {@link Feature} belongs.
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| 53 | *
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| 54 | * @return the {@link Feature} identified by this {@link FeatureReference}
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| 55 | *
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| 56 | * @throws DataException
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| 57 | */
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| 58 | public Feature getFeature(FeatureType featureType) throws DataException; |
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| 59 | 41270 | jjdelcerro | |
| 60 | |||
| 61 | /**
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| 62 | * Inform that represented feature is not stored in the original data store
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| 63 | *
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| 64 | * @return true if not in the original store
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| 65 | */
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| 66 | public boolean isNewFeature(); |
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| 67 | 43824 | jjdelcerro | |
| 68 | public String getCode(); |
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| 69 | 40435 | jjdelcerro | } |