svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / featureset / DynObjectIteratorFeatureIteratorFacade.java @ 40435
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1 | 40435 | jjdelcerro | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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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 2
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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 | */
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22 | package org.gvsig.fmap.dal.feature.impl.featureset; |
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23 | |||
24 | import org.gvsig.fmap.dal.feature.Feature; |
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25 | import org.gvsig.fmap.dal.feature.FeatureSet; |
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26 | import org.gvsig.tools.dispose.DisposableIterator; |
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27 | import org.gvsig.tools.dynobject.DynObject; |
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28 | import org.gvsig.tools.dynobject.DynObjectSet; |
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29 | |||
30 | /**
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31 | * {@link DynObject} implementation to facade a iterator of a {@link FeatureSet}
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32 | * and allow to be used as a {@link DynObjectSet} iterator.
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33 | *
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34 | * @author gvSIG Team
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35 | * @version $Id$
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36 | *
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37 | */
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38 | public class DynObjectIteratorFeatureIteratorFacade implements |
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39 | DisposableIterator { |
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40 | |||
41 | private final DisposableIterator featureIterator; |
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42 | private DynObjectFeatureFacade featureFacade;
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43 | |||
44 | /**
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45 | * Creates a new DynObjects iterator facade over a feature iterator.
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46 | * Each {@link Feature} will be returned through a new or reused
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47 | * {@link DynObjectFeatureFacade} which allows the {@link Feature} to be
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48 | * used like a DynObject.
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49 | *
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50 | * @param featureIterator
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51 | * to facade
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52 | * @param featureFacade
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53 | * if not null this object will be reused as the facade for the
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54 | * Feature objects of the feature iterator
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55 | */
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56 | public DynObjectIteratorFeatureIteratorFacade(
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57 | DisposableIterator featureIterator, DynObjectFeatureFacade featureFacade) { |
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58 | this.featureIterator = featureIterator;
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59 | this.featureFacade = featureFacade;
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60 | } |
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61 | |||
62 | /**
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63 | * Creates a new DynObjects iterator facade over a feature iterator.
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64 | * Each {@link Feature} will be returned through a new
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65 | * {@link DynObjectFeatureFacade} which allows the {@link Feature} to be
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66 | * used like a DynObject.
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67 | *
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68 | * @param featureIterator
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69 | * to facade
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70 | */
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71 | public DynObjectIteratorFeatureIteratorFacade(
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72 | DisposableIterator featureIterator) { |
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73 | this.featureIterator = featureIterator;
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74 | } |
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75 | |||
76 | public void dispose() { |
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77 | featureIterator.dispose(); |
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78 | } |
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79 | |||
80 | public boolean hasNext() { |
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81 | return featureIterator.hasNext();
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82 | } |
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83 | |||
84 | public Object next() { |
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85 | Feature feature = (Feature) featureIterator.next(); |
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86 | if (featureFacade == null) { |
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87 | featureFacade = new DynObjectFeatureFacade();
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88 | } |
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89 | featureFacade.setFeatureCopy(feature); |
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90 | return featureFacade;
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91 | } |
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92 | |||
93 | public void remove() { |
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94 | featureIterator.remove(); |
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95 | } |
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96 | |||
97 | } |