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annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/MorphologicalWidthParser.java @ 2821:0a536eb5d668

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Added parser for parsing morphological widths. flys-backend/trunk@4238 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 13 Apr 2012 13:22:54 +0000
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children 0d27d02b1208
rev   line source
2821
0a536eb5d668 Added parser for parsing morphological widths.
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1 package de.intevation.flys.importer.parsers;
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2
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3 import java.math.BigDecimal;
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4
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5 import java.text.NumberFormat;
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6 import java.text.ParseException;
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7
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8 import java.util.ArrayList;
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9 import java.util.List;
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10 import java.util.regex.Matcher;
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11 import java.util.regex.Pattern;
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12
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13 import org.apache.log4j.Logger;
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14
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15 import de.intevation.flys.importer.ImportMorphWidth;
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16 import de.intevation.flys.importer.ImportMorphWidthValue;
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17 import de.intevation.flys.importer.ImportUnit;
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18
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19
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20 public class MorphologicalWidthParser extends LineParser {
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21
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22 private static final Logger log =
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23 Logger.getLogger(MorphologicalWidthParser.class);
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24
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25
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26 public static final NumberFormat nf = NumberFormat.getInstance(DEFAULT_LOCALE);
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27
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28
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29 public static final Pattern META_UNIT =
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30 Pattern.compile("^Einheit: \\[(.*)\\].*");
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31
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32
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33 protected List<ImportMorphWidth> morphWidths;
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34
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35 protected ImportMorphWidth current;
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36
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37
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38 public MorphologicalWidthParser() {
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39 morphWidths = new ArrayList<ImportMorphWidth>();
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40 }
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41
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42
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43 @Override
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44 protected void reset() {
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45 current = new ImportMorphWidth();
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46 }
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47
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48
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49 @Override
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50 protected void finish() {
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51 if (current != null) {
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52 morphWidths.add(current);
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53 }
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54 }
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55
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56
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57 @Override
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58 protected void handleLine(String line) {
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59 if (line.startsWith(START_META_CHAR)) {
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60 handleMetaLine(stripMetaLine(line));
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61 }
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62 else {
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63 handleDataLine(line);
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64 }
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65 }
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66
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67
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68 protected void handleMetaLine(String line) {
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69 if (handleMetaUnit(line)) {
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70 return;
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71 }
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72 else {
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73 log.warn("Unknown meta line: '" + line + "'");
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74 }
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75 }
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76
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77
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78 protected boolean handleMetaUnit(String line) {
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79 Matcher m = META_UNIT.matcher(line);
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80
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81 if (m.matches()) {
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82 String unit = m.group(1);
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83
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84 current.setUnit(new ImportUnit(unit));
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85
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86 return true;
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87 }
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88
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89 return false;
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90 }
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91
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92
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93 protected void handleDataLine(String line) {
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94 String[] vals = line.split(SEPERATOR_CHAR);
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95
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96 if (vals == null || vals.length < 2) {
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97 log.warn("skip invalid data line: '" + line + "'");
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98 return;
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99 }
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100
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101 try {
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102 BigDecimal km = new BigDecimal(nf.parse(vals[0]).doubleValue());
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103 BigDecimal width = new BigDecimal(nf.parse(vals[1]).doubleValue());
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104
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105 String desc = vals.length > 2 ? vals[2] : null;
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106
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107 current.addValue(new ImportMorphWidthValue(
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108 km,
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109 width,
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110 desc
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111 ));
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112 }
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113 catch (ParseException pe) {
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114 log.warn("Error while parsing numbers in '" + line + "'");
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115 }
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116 }
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117
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118
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119 public List<ImportMorphWidth> getMorphologicalWidths() {
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120 return morphWidths;
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121 }
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122 }
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123 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org