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annotate flys-artifacts/src/main/java/de/intevation/flys/exports/StepCSVWriter.java @ 4031:e4e345d81a65

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issue889/2
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 04 Oct 2012 14:54:44 +0200
parents 475dd07c2cb1
children
rev   line source
2575
475dd07c2cb1 New utility to handle more dynamically long csv exported rows.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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1 package de.intevation.flys.exports;
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2
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3 import au.com.bytecode.opencsv.CSVWriter;
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4
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5 import java.util.ArrayList;
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6 import java.util.Arrays;
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7
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8 /**
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9 * Class to overcome shortcoming of CSVWriter to accept String-Arrays only.
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10 * The StepCSVWriter buffers incoming values, such that rows in a csv can be
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11 * created more dynamically. Do not forget to call flush().
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12 */
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13 public class StepCSVWriter {
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14
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15 /** Writer to use when calling flush. */
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16 CSVWriter writer = null;
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17 /** Buffer of strings (values). */
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18 ArrayList<String> buffer;
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19
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20
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21 /** Trivial constructor. */
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22 public StepCSVWriter() {
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23 buffer = new ArrayList<String>();
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24 }
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25
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26
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27 /** Set writer. */
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28 public void setCSVWriter(CSVWriter writer) {
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29 this.writer = writer;
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30 }
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31
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32
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33 /** Add a value to next flush. */
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34 public void addNext(String value) {
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35 buffer.add(value);
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36 }
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37
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38
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39 /** Add many values to next flush. */
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40 public void addNexts(String ... values) {
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41 buffer.addAll(Arrays.asList(values));
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42 }
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43
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44
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45 /** Write the row with csvwriter. */
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46 public void flush() {
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47 writer.writeNext(buffer.toArray(new String[buffer.size()]));
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48 buffer.clear();
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49 }
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50 }
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51 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org