gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / dataTypes / impl / coercion / CoerceToTimestamp.java @ 728
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1 | 726 | jldominguez | /* gvSIG. Desktop Geographic Information System.
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2 | *
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3 | * Copyright ? 2007-2013 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.tools.dataTypes.impl.coercion; |
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24 | |||
25 | import java.sql.Timestamp; |
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26 | |||
27 | import org.gvsig.tools.dataTypes.CoercionException; |
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28 | import org.gvsig.tools.dataTypes.DataTypesManager.Coercion; |
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29 | |||
30 | |||
31 | /**
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32 | * Utility class to force instantiation of Timestamp objects.
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33 | 727 | jldominguez | * If a plugin provides a datasource with a timestamp type which
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34 | * is not java.sql.Timestamp, then the plugin will have
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35 | * to perform a conversion or coercion between
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36 | * its Timestamp type and java.sql.Timestamp if it's not automatic.
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37 | 726 | jldominguez | *
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38 | 727 | jldominguez | * Postgresql JDBC uses java.sql.Timestamp, so no problem
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39 | *
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40 | * Oracle uses oracle.sql.TIMESTAMP which is automatically
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41 | * converted, so this coercion is enough
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42 | *
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43 | 726 | jldominguez | * @author jldominguez
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44 | *
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45 | */
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46 | 728 | jldominguez | public class CoerceToTimestamp extends CoerceToTime { |
47 | 726 | jldominguez | |
48 | public static final String NOW_STRING = "now"; |
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49 | |||
50 | public Object coerce(Object value) throws CoercionException { |
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51 | if (value instanceof Timestamp) { |
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52 | return value;
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53 | } else {
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54 | String str = value.toString();
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55 | Timestamp resp = null; |
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56 | |||
57 | // ----------- (1) Try normal parsing
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58 | try {
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59 | resp = Timestamp.valueOf(str);
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60 | } catch (Exception ex) { |
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61 | resp = null;
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62 | } |
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63 | if (resp != null) { |
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64 | return resp;
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65 | } |
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66 | // ----------- (2) Try parsing milliseconds
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67 | try {
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68 | long ms = Long.parseLong(str.trim()); |
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69 | resp = new Timestamp(ms); |
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70 | } catch (Exception ex) { |
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71 | resp = null;
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72 | } |
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73 | if (resp != null) { |
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74 | return resp;
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75 | } |
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76 | // ----------- (3) Accept "now"
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77 | if (NOW_STRING.compareToIgnoreCase(str.trim()) == 0) { |
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78 | |||
79 | 728 | jldominguez | resp = new Timestamp(System.currentTimeMillis()); |
80 | 726 | jldominguez | } |
81 | 728 | jldominguez | |
82 | if (resp != null) { |
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83 | return resp;
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84 | } |
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85 | |||
86 | /*
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87 | * Finally try as time
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88 | */
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89 | return super.coerce(value); |
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90 | 726 | jldominguez | } |
91 | } |
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92 | |||
93 | } |