Mercurial > dive4elements > river
diff flys-backend/src/main/java/de/intevation/flys/importer/parsers/MorphologicalWidthParser.java @ 2821:0a536eb5d668
Added parser for parsing morphological widths.
flys-backend/trunk@4238 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Fri, 13 Apr 2012 13:22:54 +0000 |
parents | |
children | 0d27d02b1208 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/MorphologicalWidthParser.java Fri Apr 13 13:22:54 2012 +0000 @@ -0,0 +1,123 @@ +package de.intevation.flys.importer.parsers; + +import java.math.BigDecimal; + +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.ImportMorphWidth; +import de.intevation.flys.importer.ImportMorphWidthValue; +import de.intevation.flys.importer.ImportUnit; + + +public class MorphologicalWidthParser extends LineParser { + + private static final Logger log = + Logger.getLogger(MorphologicalWidthParser.class); + + + public static final NumberFormat nf = NumberFormat.getInstance(DEFAULT_LOCALE); + + + public static final Pattern META_UNIT = + Pattern.compile("^Einheit: \\[(.*)\\].*"); + + + protected List<ImportMorphWidth> morphWidths; + + protected ImportMorphWidth current; + + + public MorphologicalWidthParser() { + morphWidths = new ArrayList<ImportMorphWidth>(); + } + + + @Override + protected void reset() { + current = new ImportMorphWidth(); + } + + + @Override + protected void finish() { + if (current != null) { + morphWidths.add(current); + } + } + + + @Override + protected void handleLine(String line) { + if (line.startsWith(START_META_CHAR)) { + handleMetaLine(stripMetaLine(line)); + } + else { + handleDataLine(line); + } + } + + + protected void handleMetaLine(String line) { + if (handleMetaUnit(line)) { + return; + } + else { + log.warn("Unknown meta line: '" + line + "'"); + } + } + + + protected boolean handleMetaUnit(String line) { + Matcher m = META_UNIT.matcher(line); + + if (m.matches()) { + String unit = m.group(1); + + current.setUnit(new ImportUnit(unit)); + + return true; + } + + return false; + } + + + protected void handleDataLine(String line) { + String[] vals = line.split(SEPERATOR_CHAR); + + if (vals == null || vals.length < 2) { + log.warn("skip invalid data line: '" + line + "'"); + return; + } + + try { + BigDecimal km = new BigDecimal(nf.parse(vals[0]).doubleValue()); + BigDecimal width = new BigDecimal(nf.parse(vals[1]).doubleValue()); + + String desc = vals.length > 2 ? vals[2] : null; + + current.addValue(new ImportMorphWidthValue( + km, + width, + desc + )); + } + catch (ParseException pe) { + log.warn("Error while parsing numbers in '" + line + "'"); + } + } + + + public List<ImportMorphWidth> getMorphologicalWidths() { + return morphWidths; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :