Mercurial > lada > lada-server

annotate src/main/java/de/intevation/lada/data/importer/LAFFormat.java @ 310:821557a17e5e

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First version of the LAF importer. The importer module currently only runs with the test application (comming in the next commit)! * LAF Parser: - Uses a small implementation of a state machine. - Extracts the keys with its value or multi value. - Uses the producer interface to generate objects. * Attribute mapper: - Maps the attributes defined in the configuration file to object attributes. - Generates objects from multi value attributes. * LAF format: - Reads the config file * LAF importer: - Implemetation of the importer interface for LAF format.
author Raimund Renkert <rrenkert@intevation.de>
date Tue, 20 Aug 2013 16:13:17 +0200
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children 5844d7457dde
rev   line source
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821557a17e5e First version of the LAF importer.
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1 package de.intevation.lada.data.importer;
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2
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3 import java.io.IOException;
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4 import java.nio.ByteBuffer;
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5 import java.nio.charset.Charset;
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6 import java.nio.file.Files;
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7 import java.nio.file.Paths;
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8 import java.util.LinkedList;
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9 import java.util.List;
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10 import java.util.regex.Pattern;
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11
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12 import javax.ejb.Singleton;
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13
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14 import org.json.JSONArray;
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15 import org.json.JSONException;
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16 import org.json.JSONObject;
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17
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18
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19 public class LAFFormat
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20 {
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21 private JSONObject fileContent;
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22
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23 public boolean readConfigFile(String fileName) {
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24 try {
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25 byte[] encoded = Files.readAllBytes(Paths.get(fileName));
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26 Charset encoding = Charset.defaultCharset();
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27 String content =
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28 encoding.decode(ByteBuffer.wrap(encoded)).toString();
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29 fileContent = new JSONObject(content);
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30 return true;
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31 }
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32 catch (IOException ioe) {
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33 return false;
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34 }
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35 catch (JSONException je) {
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36 return false;
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37 }
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38 }
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39
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40 public List<EntryFormat> getFormat(String dataType) {
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41 List<EntryFormat> formats = new LinkedList<EntryFormat>();
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42 try {
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43 JSONArray block = fileContent.getJSONArray(dataType);
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44 for (int i = 0; i < block.length(); i++) {
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45 JSONObject jEntry = block.getJSONObject(i);
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46 EntryFormat entry = new EntryFormat();
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47 entry.setKey(jEntry.getString("key"));
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48 Pattern pattern =
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49 Pattern.compile(
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50 jEntry.getString("regex"),
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51 Pattern.MULTILINE);
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52 entry.setPattern(pattern);
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53 entry.setDefaultValue(jEntry.get("default"));
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54 formats.add(entry);
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55 }
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56 return formats;
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57 }
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58 catch (JSONException e) {
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59 return null;
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60 }
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61 }
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62 }
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