gvsig-geoprocess / org.gvsig.sextante / trunk / org.gvsig.sextante.app / org.gvsig.sextante.app.algorithm / org.gvsig.sextante.app.algorithm.dissolve / src / main / java / org / gvsig / sextante / app / algorithm / dissolve / DissolveRule.java @ 37
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1 | 36 | nbrodin | /*
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2 | * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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3 | *
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4 | * Copyright (C) 2010 Generalitat Valenciana.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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19 | */
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20 | package org.gvsig.sextante.app.algorithm.dissolve; |
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21 | |||
22 | import java.util.Date; |
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23 | 37 | nbrodin | import java.util.HashMap; |
24 | import java.util.Iterator; |
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25 | 36 | nbrodin | |
26 | import org.gvsig.fmap.dal.feature.Feature; |
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27 | |||
28 | import com.vividsolutions.jts.geom.Geometry; |
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29 | |||
30 | /**
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31 | * Decides if dissolve two features based in an alphanumeric criteria:
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32 | * two features will be dissolved if they have the same value for
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33 | * a given (and single) field.
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34 | */
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35 | 37 | nbrodin | public class DissolveRule implements IDissolveRule { |
36 | protected int indexField = -1; |
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37 | private HashMap<String, String> funcMap = null; |
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38 | 36 | nbrodin | |
39 | 37 | nbrodin | public DissolveRule(int indexField, HashMap<String, String> funcMap) { |
40 | 36 | nbrodin | this.indexField = indexField;
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41 | 37 | nbrodin | this.funcMap = funcMap;
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42 | 36 | nbrodin | } |
43 | |||
44 | /*
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45 | * (non-Javadoc)
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46 | * @see org.gvsig.sextante.app.algorithm.dissolve.IDissolveCriteria#verifyIfDissolve(com.vividsolutions.jts.geom.Geometry, com.vividsolutions.jts.geom.Geometry, org.gvsig.fmap.dal.feature.Feature)
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47 | */
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48 | public boolean verifyIfDissolve(Geometry g1, Geometry g2, Feature f1, Feature f2) { |
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49 | Object obj1 = f1.get(indexField);
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50 | Object obj2 = f2.get(indexField);
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51 | return compareTo(obj1, obj2);
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52 | } |
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53 | |||
54 | /*
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55 | * (non-Javadoc)
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56 | * @see org.gvsig.sextante.app.algorithm.dissolve.IDissolveCriteria#isFunctionIncluded(java.lang.String)
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57 | */
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58 | public boolean isFunctionIncluded(String func) { |
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59 | 37 | nbrodin | Iterator<String> it = funcMap.values().iterator(); |
60 | while (it.hasNext()) {
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61 | if(it.next().compareTo(func) == 0) |
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62 | 36 | nbrodin | return true; |
63 | } |
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64 | return false; |
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65 | } |
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66 | |||
67 | /**
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68 | * Compares two fields if both have the same data type
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69 | * @param obj1
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70 | * @param obj2
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71 | * @return
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72 | */
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73 | private boolean compareTo(Object obj1, Object obj2) { |
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74 | if(obj1 instanceof String) { |
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75 | if(((String)obj1).compareTo((String)obj2) == 0) |
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76 | return true; |
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77 | } else if(obj1 instanceof Double) { |
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78 | if(((Double)obj1).compareTo((Double)obj2) == 0) |
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79 | return true; |
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80 | } else if(obj1 instanceof Integer) { |
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81 | if(((Integer)obj1).compareTo((Integer)obj2) == 0) |
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82 | return true; |
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83 | } else if(obj1 instanceof Boolean) { |
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84 | if(((Boolean)obj1).booleanValue() == ((Boolean)obj2).booleanValue()) |
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85 | return true; |
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86 | } else if(obj1 instanceof Float) { |
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87 | if(((Float)obj1).compareTo((Float)obj2) == 0) |
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88 | return true; |
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89 | } else if(obj1 instanceof Long) { |
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90 | if(((Long)obj1).compareTo((Long)obj2) == 0) |
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91 | return true; |
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92 | } else if(obj1 instanceof Byte) { |
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93 | if(((Byte)obj1).compareTo((Byte)obj2) == 0) |
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94 | return true; |
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95 | } else if(obj1 instanceof Date) { |
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96 | if(((Date)obj1).compareTo((Date)obj2) == 0) |
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97 | return true; |
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98 | } |
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99 | return false; |
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100 | } |
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101 | 37 | nbrodin | |
102 | /*
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103 | * (non-Javadoc)
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104 | * @see org.gvsig.sextante.app.algorithm.dissolve.IDissolveCriteria#getField(java.lang.String)
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105 | */
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106 | public String getFieldName(String func) { |
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107 | return funcMap.get(func);
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108 | } |
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109 | |||
110 | /*
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111 | * (non-Javadoc)
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112 | * @see org.gvsig.sextante.app.algorithm.dissolve.IDissolveCriteria#getIndexField()
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113 | */
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114 | public int getIndexField() { |
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115 | return indexField;
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116 | } |
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117 | 36 | nbrodin | |
118 | } |