svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / expansionadapter / ExpansionAdapter.java @ 40559
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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.dal.feature.impl.expansionadapter; |
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26 | import java.util.HashMap; |
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27 | import java.util.Iterator; |
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28 | |||
29 | |||
30 | /**
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31 | * Maneja el fichero de extensi?n en el que se almacenan las modificacionesy adici?nes
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32 | * durante la edici?n. Los ?ndices que devuelve esta clase en sus m?todos
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33 | * addFeature y modifyFeature son invariables, es decir, que si se invoca un
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34 | * m?todo addFeature que retorna un 8, independientemente de las operaciones
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35 | * que se realicen posteriormente, una llamada a getFeature(8) retornar?
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36 | * dicha fila. Si esta geometr?a es eliminada posteriormente, se retornar? un
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37 | * null. Esto ?ltimo se cumple mientras no se invoque el m?todo compact, mediante
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38 | * el que se reorganizan las geometr?as dejando en el fichero s?lo las que tienen
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39 | * validez en el momento de realizar la invocaci?n.
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40 | *
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41 | * @author Vicente Caballero Navarro
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42 | *
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43 | */
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44 | public interface ExpansionAdapter { |
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45 | /**
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46 | * A?ade una geometria al final del fichero y retorna el ?ndice que ocupa
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47 | * esta geometria en el mismo
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48 | *
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49 | * @param feature
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50 | * @param status TODO
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51 | * @param indexInternalFields fields that where valid when this feature was added.
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52 | *
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53 | * @return calculated index of the new feature.
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54 | */
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55 | int addObject(Object obj); |
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56 | |||
57 | /**
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58 | * Modifica la index-?sima geometr?a del fichero devolviendo la posici?n en
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59 | * la que se pone la geometria modificada.
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60 | *
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61 | * @param calculated index of feature to be modified
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62 | * @param feature newFeature that replaces the old feature.
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63 | *
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64 | * @return new calculated index of the modified feature.
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65 | */
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66 | // int updateObject(Object obj);
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67 | |||
68 | /**
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69 | * Obtiene la geometria que hay en el ?ndice 'index' o null si la geometr?a
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70 | * ha sido invalidada.
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71 | *
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72 | * @param index caculatedIndex of the feature to be read.
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73 | * @return feature
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74 | */
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75 | Object getObject(int index); |
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76 | |||
77 | /**
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78 | * Realiza una compactaci?n del fichero que maneja esta clase
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79 | *
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80 | * @param relations DOCUMENT ME!
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81 | */
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82 | void compact(HashMap relations); |
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83 | |||
84 | /**
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85 | * Mueve el puntero de escritura de manera que las siguientes escrituras
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86 | * machacar?n la ?ltima fila
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87 | */
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88 | void deleteLastObject();
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89 | |||
90 | /**
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91 | * Abre el fichero de expansi?n para comenzar la edici?n
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92 | */
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93 | void open();
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94 | |||
95 | /**
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96 | * Cierra el fichero de expansi?n al terminar la edici?n
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97 | */
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98 | void close();
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99 | |||
100 | int getSize();
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101 | |||
102 | Iterator iterator();
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103 | } |