Mercurial > dive4elements > river
view flys-backend/src/main/java/de/intevation/flys/importer/parsers/WaterlevelDifferencesParser.java @ 4777:34398f424cfd
W80Parser: Return null if no year set to behave like other parsers and avoid
building a (wrong) TimeSpan object.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 07 Jan 2013 11:55:46 +0100 |
parents | f63b39799d2d |
children | 016616df35dc |
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package de.intevation.flys.importer.parsers; import java.io.File; import java.io.IOException; import java.text.NumberFormat; import java.text.ParseException; import java.util.ArrayList; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.log4j.Logger; import de.intevation.flys.importer.ImportUnit; import de.intevation.flys.importer.ImportWaterlevelDifference; import de.intevation.flys.importer.ImportWaterlevelDifferenceColumn; import de.intevation.flys.importer.ImportWaterlevelDifferenceValue; public class WaterlevelDifferencesParser extends LineParser { private static final Logger log = Logger.getLogger(WaterlevelDifferencesParser.class); private static final NumberFormat nf = NumberFormat.getInstance(DEFAULT_LOCALE); public static final Pattern META_UNIT = Pattern.compile("^Einheit: \\[(.*)\\].*"); private List<ImportWaterlevelDifference> differences; private ImportWaterlevelDifferenceColumn[] columns; private ImportWaterlevelDifference current; public WaterlevelDifferencesParser() { differences = new ArrayList<ImportWaterlevelDifference>(); } public List<ImportWaterlevelDifference> getDifferences() { return differences; } @Override public void parse(File file) throws IOException { current = new ImportWaterlevelDifference(file.getName()); super.parse(file); } @Override protected void reset() { } @Override protected void finish() { if (columns != null && current != null) { for (ImportWaterlevelDifferenceColumn col: columns) { current.addValue(col); } differences.add(current); } current = null; columns = null; } @Override protected void handleLine(int lineNum, String line) { if (line.startsWith(START_META_CHAR)) { handleMetaLine(stripMetaLine(line)); } else { handleDataLine(line); } } private void handleMetaLine(String meta) { if (handleMetaUnit(meta)) { return; } else { handleMetaColumnNames(meta); } } private boolean handleMetaUnit(String meta) { Matcher m = META_UNIT.matcher(meta); if (m.matches()) { String unit = m.group(1); log.debug("Found unit: '" + unit + "'"); current.setUnit(new ImportUnit(unit)); return true; } return false; } private boolean handleMetaColumnNames(String meta) { Pattern META_COLUMN_NAMES = Pattern.compile("Fluss-km;(.*)"); Matcher m = META_COLUMN_NAMES.matcher(meta); if (m.matches()) { String colStr = m.group(1); String[] cols = colStr.split(SEPERATOR_CHAR); log.debug("Found " + cols.length + " columns."); initColumns(cols); return true; } return false; } private void initColumns(String[] cols) { columns = new ImportWaterlevelDifferenceColumn[cols.length]; for (int i = 0; i < cols.length; i++) { String name = cols[i].replace("\"", ""); log.debug("Create new column '" + name + "'"); columns[i] = new ImportWaterlevelDifferenceColumn(name); } } private void handleDataLine(String line) { String[] cols = line.split(SEPERATOR_CHAR); if (cols == null || cols.length < 2) { log.warn("skip invalid waterlevel line: '" + line + "'"); return; } try { Double station = nf.parse(cols[0]).doubleValue(); for (int i = 0; i < columns.length; i++) { int idx = i+1; if (idx >= cols.length) { log.warn("Insufficient column numbers: " + line); continue; } String value = cols[idx]; try { columns[i].addValue(new ImportWaterlevelDifferenceValue( station, nf.parse(value).doubleValue() )); } catch (ParseException pe) { log.warn("Error while parsing value: '" + value + "'"); } } } catch (ParseException pe) { log.warn("Error while parsing station: '" + line + "'"); } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :