root / branches / v2_0_0_prep / extensions / extDalTransformJoin / src / org / gvsig / app / join / utils / TransformUtils.java @ 38556
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1 | 38552 | jldominguez | /* gvSIG. Desktop Geographic Information System.
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2 | *
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3 | * Copyright ? 2007-2012 gvSIG Association
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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18 | * MA 02110-1301, USA.
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19 | *
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20 | * For any additional information, do not hesitate to contact us
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21 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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22 | */
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23 | package org.gvsig.app.join.utils; |
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24 | |||
25 | import java.util.ArrayList; |
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26 | |||
27 | import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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28 | import org.gvsig.fmap.dal.feature.FeatureType; |
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29 | 38556 | jldominguez | import org.gvsig.tools.dataTypes.DataTypes; |
30 | 38552 | jldominguez | |
31 | |||
32 | /**
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33 | * {@link DataTypes}-related utility methods
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34 | *
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35 | * @author jldominguez
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36 | *
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37 | */
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38 | public class TransformUtils { |
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39 | |||
40 | public static boolean isNumericType(int t) { |
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41 | return (t == DataTypes.DOUBLE
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42 | || t == DataTypes.FLOAT |
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43 | || t == DataTypes.INT |
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44 | || t == DataTypes.LONG |
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45 | || t == DataTypes.BYTE); |
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46 | } |
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47 | |||
48 | public static boolean comparableTypes(int a, int b) { |
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49 | |||
50 | if (a == b) {
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51 | return true; |
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52 | } else {
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53 | return isNumericType(a) && isNumericType(b);
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54 | } |
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55 | |||
56 | } |
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57 | /**
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58 | * @param ft
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59 | * @param the_type
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60 | * @return
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61 | */
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62 | public static ArrayList<Integer> getComparableDataTypes( |
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63 | FeatureType ft, |
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64 | int the_type) {
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65 | |||
66 | ArrayList<Integer> resp = new ArrayList<Integer>(); |
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67 | |||
68 | FeatureAttributeDescriptor[] atts = ft.getAttributeDescriptors();
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69 | int len = atts.length;
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70 | for (int i=0; i<len; i++) { |
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71 | if (comparableTypes(the_type, atts[i].getType())) {
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72 | resp.add(atts[i].getType()); |
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73 | } |
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74 | } |
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75 | return resp;
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76 | } |
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77 | |||
78 | } |