svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.mapcontext / org.gvsig.fmap.mapcontext.api / src / main / java / org / gvsig / fmap / mapcontext / layers / SpatialCache.java @ 42811
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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.mapcontext.layers; |
25 | |||
26 | import java.util.ArrayList; |
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27 | import java.util.Iterator; |
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28 | import java.util.List; |
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29 | |||
30 | import org.gvsig.fmap.geom.Geometry; |
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31 | import org.gvsig.fmap.geom.GeometryLocator; |
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32 | import org.gvsig.fmap.geom.SpatialIndex; |
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33 | import org.gvsig.fmap.geom.primitive.Envelope; |
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34 | import org.gvsig.tools.visitor.Visitor; |
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35 | import org.slf4j.Logger; |
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36 | import org.slf4j.LoggerFactory; |
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37 | |||
38 | public class SpatialCache { |
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39 | |||
40 | private static final Logger logger = LoggerFactory.getLogger(SpatialCache.class); |
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41 | private int maxFeatures = 1000; // Por defecto, pero se puede cambiar |
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42 | private int fastNumTotalRegs=0; |
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43 | private SpatialIndex index = null; |
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44 | |||
45 | private boolean enabled = false; |
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46 | |||
47 | public SpatialCache() {
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48 | try {
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49 | this.index = GeometryLocator.getGeometryManager().createDefaultMemorySpatialIndex();
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50 | } catch (Exception e) { |
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51 | logger.info("Can't create spatial index", e);
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52 | } |
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53 | } |
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54 | |||
55 | public int getMaxFeatures() { |
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56 | return maxFeatures;
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57 | } |
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58 | |||
59 | public void setMaxFeatures(int maxFeatures) { |
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60 | this.maxFeatures = maxFeatures;
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61 | } |
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62 | |||
63 | public synchronized void insert(Envelope bounds, Geometry geom) { |
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64 | if (isEnabled() && getMaxFeatures() >= size()) {
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65 | this.index.insert(bounds, geom);
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66 | } |
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67 | } |
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68 | |||
69 | public synchronized void query(Envelope searchEnv, Visitor visitor) |
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70 | { |
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71 | this.index.query(searchEnv, visitor);
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72 | |||
73 | } |
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74 | public synchronized List query(Envelope searchEnv) |
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75 | { |
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76 | List result = new ArrayList(); |
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77 | Iterator it = index.query(searchEnv);
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78 | while( it.hasNext() ) {
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79 | result.add( it.next()); |
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80 | } |
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81 | return result;
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82 | } |
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83 | |||
84 | public void insert(Envelope itemEnv, Object item) { |
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85 | if (isEnabled() && getMaxFeatures() >= size()) {
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86 | this.index.insert(itemEnv, item);
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87 | fastNumTotalRegs++; |
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88 | } |
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89 | } |
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90 | |||
91 | public boolean remove(Envelope itemEnv, Object item) { |
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92 | boolean resul = this.index.remove(itemEnv,item); |
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93 | if (resul)
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94 | fastNumTotalRegs--; |
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95 | return resul;
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96 | } |
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97 | |||
98 | public int size() { |
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99 | return fastNumTotalRegs;
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100 | } |
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101 | |||
102 | public void clearAll() { |
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103 | index.removeAll(); |
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104 | fastNumTotalRegs = 0;
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105 | } |
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106 | |||
107 | public void remove(org.gvsig.fmap.geom.primitive.Envelope bounds, Geometry geom) { |
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108 | index.remove(bounds, geom); |
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109 | } |
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110 | |||
111 | public boolean isEnabled() { |
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112 | return enabled;
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113 | } |
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114 | |||
115 | public void setEnabled(boolean enabled) { |
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116 | this.enabled = enabled;
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117 | } |
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118 | } |