svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.file / org.gvsig.fmap.dal.file.dbf / src / main / java / org / gvsig / fmap / dal / store / dbf / DBFFeatureWriter.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 IVER T.I. S.A. {{Task}}
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26 | */
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27 | |||
28 | package org.gvsig.fmap.dal.store.dbf; |
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29 | |||
30 | import java.io.File; |
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31 | import java.io.IOException; |
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32 | import java.io.RandomAccessFile; |
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33 | import java.nio.channels.FileChannel; |
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34 | import java.nio.channels.WritableByteChannel; |
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35 | import java.nio.charset.Charset; |
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36 | |||
37 | import org.gvsig.fmap.dal.exception.DataException; |
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38 | import org.gvsig.fmap.dal.exception.InitializeException; |
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39 | import org.gvsig.fmap.dal.exception.WriteException; |
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40 | import org.gvsig.fmap.dal.feature.Feature; |
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41 | import org.gvsig.fmap.dal.feature.FeatureType; |
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42 | import org.gvsig.fmap.dal.feature.exception.AttributeFeatureTypeNotSuportedException; |
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43 | import org.gvsig.fmap.dal.store.dbf.utils.DbaseFileHeader; |
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44 | import org.gvsig.fmap.dal.store.dbf.utils.DbaseFileWriter; |
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45 | |||
46 | public class DBFFeatureWriter { |
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47 | protected FeatureType featuretype;
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48 | private DbaseFileWriter dbfWriter = null; |
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49 | protected String name; |
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50 | private File dbfFile; |
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51 | private DbaseFileHeader myHeader;
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52 | private FileChannel dbfChannel; |
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53 | |||
54 | protected DBFFeatureWriter(String name) { |
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55 | this.name= name;
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56 | } |
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57 | |||
58 | public void begin(DBFStoreParameters storeParameters, |
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59 | FeatureType featureType, long numRows) throws DataException { |
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60 | |||
61 | // TODO if is new set the langID
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62 | try {
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63 | myHeader = DbaseFileHeader.createDbaseHeader(featureType); |
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64 | } catch (AttributeFeatureTypeNotSuportedException e1) {
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65 | throw new WriteException(this.name, e1); |
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66 | } |
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67 | |||
68 | dbfFile = storeParameters.getDBFFile(); |
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69 | |||
70 | dbfChannel = null;
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71 | |||
72 | try {
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73 | dbfChannel = (FileChannel) getWriteChannel(dbfFile
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74 | .getAbsolutePath()); |
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75 | } catch (IOException e) { |
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76 | throw new WriteException(this.name, e); |
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77 | } |
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78 | try{
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79 | this.dbfWriter = new DbaseFileWriter(myHeader, dbfChannel, true); |
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80 | |||
81 | |||
82 | this.dbfWriter.setCharset(Charset.forName("ISO-8859-1")); |
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83 | } catch (InitializeException e) {
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84 | throw new WriteException(this.name, e); |
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85 | } |
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86 | |||
87 | |||
88 | this.featuretype=featureType;
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89 | dbfFile = storeParameters.getDBFFile(); |
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90 | |||
91 | } |
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92 | |||
93 | public void append(Feature feature) throws DataException { |
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94 | // TODO use FeatureProvider
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95 | dbfWriter.append(feature); |
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96 | } |
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97 | |||
98 | public void end() throws DataException { |
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99 | dbfWriter.close(); |
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100 | } |
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101 | |||
102 | public void dispose() { |
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103 | dbfWriter = null;
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104 | |||
105 | } |
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106 | |||
107 | protected static WritableByteChannel getWriteChannel(String path) |
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108 | throws IOException { |
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109 | WritableByteChannel channel;
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110 | |||
111 | File f = new File(path); |
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112 | |||
113 | if (!f.exists()) {
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114 | // System.out.println("Creando fichero " + f.getAbsolutePath());
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115 | |||
116 | if (!f.createNewFile()) {
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117 | System.err.print("Error al crear el fichero " |
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118 | + f.getAbsolutePath()); |
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119 | throw new IOException("Cannot create file " + f); |
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120 | } |
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121 | } |
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122 | |||
123 | RandomAccessFile raf = new RandomAccessFile(f, "rw"); |
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124 | channel = raf.getChannel(); |
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125 | |||
126 | return channel;
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127 | } |
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128 | |||
129 | /**
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130 | * @return
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131 | */
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132 | protected int getRowCount() { |
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133 | return this.myHeader.getNumRecords(); |
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134 | } |
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135 | |||
136 | |||
137 | } |