org.argeo.util/src/org/argeo/util/CsvParserWithLinesAsMap.java

   1 package org.argeo.util;
   2
   3 import java.util.HashMap;
   4 import java.util.List;
   5 import java.util.Map;
   6
   7 /**
   8  * CSV parser allowing to process lines as maps whose keys are the header
   9  * fields.
  10  */
  11 public abstract class CsvParserWithLinesAsMap extends CsvParser {
  12
  13         /**
  14          * Actually processes a line.
  15          *
  16          * @param lineNumber
  17          *            the current line number, starts at 1 (the header, if header
  18          *            processing is enabled, the first lien otherwise)
  19          * @param line
  20          *            the parsed tokens as a map whose keys are the header fields
  21          */
  22         protected abstract void processLine(Integer lineNumber,
  23                         Map<String, String> line);
  24
  25         protected final void processLine(Integer lineNumber, List<String> header,
  26                         List<String> tokens) {
  27                 if (header == null)
  28                         throw new UtilsException("Only CSV with header is supported");
  29                 Map<String, String> line = new HashMap<String, String>();
  30                 for (int i = 0; i < header.size(); i++) {
  31                         String key = header.get(i);
  32                         String value = null;
  33                         if (i < tokens.size())
  34                                 value = tokens.get(i);
  35                         line.put(key, value);
  36                 }
  37                 processLine(lineNumber, line);
  38         }
  39
  40 }