svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.api / src / main / java / org / gvsig / fmap / dal / DataQuery.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 | |||
23 | /*
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24 | * AUTHORS (In addition to CIT):
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25 | * 2008 {DiSiD Technologies} {Create Parameter object to define queries}
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26 | */
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27 | package org.gvsig.fmap.dal; |
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28 | |||
29 | import org.gvsig.tools.persistence.Persistent; |
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30 | |||
31 | /**
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32 | * Defines the properties of a collection of data, as a result of a query
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33 | * through a DataStore.
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34 | * <p>
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35 | * The scale parameter can be used by the DataStore as a hint about the quality
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36 | * or resolution of the data needed to view or operate with the data returned.
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37 | * As an example, it may use the scale to return only a representative subset of
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38 | * the data, or maybe to return Data with less detail, like a point or a line
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39 | * instead of a polygon.
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40 | * </p>
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41 | *
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42 | * @author 2009- <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team
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43 | */
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44 | public interface DataQuery extends Persistent { |
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45 | |||
46 | /**
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47 | * Sets the scale.
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48 | *
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49 | * @param scale
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50 | * the scale to set
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51 | */
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52 | void setScale(double scale); |
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53 | |||
54 | /**
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55 | * Returns the scale of the data to load.
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56 | *
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57 | * @return the scale of the data to load
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58 | */
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59 | double getScale();
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60 | |||
61 | /**
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62 | * Returns the value of an query parameter.
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63 | *
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64 | * @param name
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65 | * of the parameter
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66 | * @return the parameter value
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67 | */
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68 | Object getQueryParameter(String name); |
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69 | |||
70 | /**
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71 | * Sets the value of an query parameter.
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72 | *
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73 | * @param name
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74 | * of the query parameter
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75 | * @param value
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76 | * for the query parameter
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77 | */
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78 | void setQueryParameter(String name, Object value); |
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79 | |||
80 | } |