Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/exports/StepCSVWriter.java @ 2575:475dd07c2cb1
New utility to handle more dynamically long csv exported rows.
flys-artifacts/trunk@4113 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
|---|---|
| date | Mon, 05 Mar 2012 09:53:30 +0000 |
| parents | |
| children |
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| 2574:3598690dc9e2 | 2575:475dd07c2cb1 |
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| 1 package de.intevation.flys.exports; | |
| 2 | |
| 3 import au.com.bytecode.opencsv.CSVWriter; | |
| 4 | |
| 5 import java.util.ArrayList; | |
| 6 import java.util.Arrays; | |
| 7 | |
| 8 /** | |
| 9 * Class to overcome shortcoming of CSVWriter to accept String-Arrays only. | |
| 10 * The StepCSVWriter buffers incoming values, such that rows in a csv can be | |
| 11 * created more dynamically. Do not forget to call flush(). | |
| 12 */ | |
| 13 public class StepCSVWriter { | |
| 14 | |
| 15 /** Writer to use when calling flush. */ | |
| 16 CSVWriter writer = null; | |
| 17 /** Buffer of strings (values). */ | |
| 18 ArrayList<String> buffer; | |
| 19 | |
| 20 | |
| 21 /** Trivial constructor. */ | |
| 22 public StepCSVWriter() { | |
| 23 buffer = new ArrayList<String>(); | |
| 24 } | |
| 25 | |
| 26 | |
| 27 /** Set writer. */ | |
| 28 public void setCSVWriter(CSVWriter writer) { | |
| 29 this.writer = writer; | |
| 30 } | |
| 31 | |
| 32 | |
| 33 /** Add a value to next flush. */ | |
| 34 public void addNext(String value) { | |
| 35 buffer.add(value); | |
| 36 } | |
| 37 | |
| 38 | |
| 39 /** Add many values to next flush. */ | |
| 40 public void addNexts(String ... values) { | |
| 41 buffer.addAll(Arrays.asList(values)); | |
| 42 } | |
| 43 | |
| 44 | |
| 45 /** Write the row with csvwriter. */ | |
| 46 public void flush() { | |
| 47 writer.writeNext(buffer.toArray(new String[buffer.size()])); | |
| 48 buffer.clear(); | |
| 49 } | |
| 50 } | |
| 51 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |