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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 15 | PointedEar | 1 | /** |
| 2 | * Defines a class to update table rates in the background |
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| 3 | */ |
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| 4 | package de.pointedears.converter.helpers; |
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| 5 | |||
| 6 | import java.io.IOException; |
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| 7 | |||
| 8 | import javax.xml.parsers.DocumentBuilder; |
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| 9 | import javax.xml.parsers.DocumentBuilderFactory; |
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| 10 | import javax.xml.parsers.ParserConfigurationException; |
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| 11 | import javax.xml.xpath.XPath; |
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| 12 | import javax.xml.xpath.XPathConstants; |
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| 13 | import javax.xml.xpath.XPathExpression; |
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| 14 | import javax.xml.xpath.XPathExpressionException; |
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| 15 | import javax.xml.xpath.XPathFactory; |
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| 16 | |||
| 17 | import org.w3c.dom.Document; |
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| 18 | import org.w3c.dom.NamedNodeMap; |
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| 19 | import org.w3c.dom.Node; |
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| 20 | import org.w3c.dom.NodeList; |
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| 21 | import org.xml.sax.SAXException; |
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| 22 | |||
| 23 | /** |
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| 24 | * @author pelinux |
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| 25 | * |
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| 26 | */ |
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| 27 | public class CurrenciesUpdateThread extends Thread |
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| 28 | { |
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| 29 | private static final String URL_ECB = |
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| 30 | "http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"; //$NON-NLS-1$ |
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| 31 | |||
| 32 | /** |
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| 33 | * Default constructor which sets the runnable |
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| 34 | * |
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| 35 | * @param runnable |
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| 36 | */ |
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| 37 | private CurrenciesUpdateThread(Runnable runnable) |
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| 38 | { |
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| 39 | super(runnable); |
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| 40 | } |
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| 41 | |||
| 42 | /** |
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| 43 | * Default constructor |
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| 44 | */ |
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| 45 | public CurrenciesUpdateThread() |
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| 46 | { |
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| 47 | this(new Runnable() { |
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| 48 | @Override |
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| 49 | public void run() |
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| 50 | { |
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| 51 | DocumentBuilderFactory documentBuilderFactory = |
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| 52 | DocumentBuilderFactory.newInstance(); |
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| 53 | documentBuilderFactory.setNamespaceAware(true); |
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| 54 | try |
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| 55 | { |
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| 56 | DocumentBuilder builder = |
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| 57 | documentBuilderFactory.newDocumentBuilder(); |
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| 58 | try |
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| 59 | { |
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| 60 | Document doc = builder.parse(CurrenciesUpdateThread.URL_ECB); |
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| 61 | XPathFactory xpathFactory = XPathFactory.newInstance(); |
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| 62 | XPath xpath = xpathFactory.newXPath(); |
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| 63 | try |
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| 64 | { |
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| 65 | XPathExpression expr = xpath.compile("/Cube/Cube//Cube"); //$NON-NLS-1$ |
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| 66 | Object result = expr.evaluate(doc, XPathConstants.NODESET); |
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| 67 | NodeList nodes = (NodeList) result; |
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| 68 | for (int i = 0, len = nodes.getLength(); i < len; i++) |
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| 69 | { |
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| 70 | Node item = nodes.item(i); |
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| 71 | NamedNodeMap attributes = item.getAttributes(); |
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| 72 | String currency = |
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| 73 | attributes.getNamedItem("currency").getNodeValue(); //$NON-NLS-1$ |
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| 74 | String rate = attributes.getNamedItem("rate").toString(); //$NON-NLS-1$ |
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| 75 | |||
| 76 | /* TODO: Update UI */ |
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| 77 | System.out.println(currency + ": " + rate); //$NON-NLS-1$ |
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| 78 | } |
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| 79 | } |
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| 80 | catch (XPathExpressionException e) |
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| 81 | { |
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| 82 | // TODO Auto-generated catch block |
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| 83 | e.printStackTrace(); |
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| 84 | } |
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| 85 | } |
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| 86 | catch (SAXException e) |
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| 87 | { |
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| 88 | // TODO Auto-generated catch block |
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| 89 | e.printStackTrace(); |
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| 90 | } |
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| 91 | catch (IOException e) |
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| 92 | { |
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| 93 | // TODO Auto-generated catch block |
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| 94 | e.printStackTrace(); |
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| 95 | } |
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| 96 | } |
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| 97 | catch (ParserConfigurationException e) |
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| 98 | { |
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| 99 | // TODO Auto-generated catch block |
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| 100 | e.printStackTrace(); |
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| 101 | } |
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| 102 | } |
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| 103 | }); |
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| 104 | } |
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| 105 | } |