Example usage for com.itextpdf.text.xml.xmp XmpReader XmpReader

Introduction

In this page you can find the example usage for com.itextpdf.text.xml.xmp XmpReader XmpReader.

Prototype

public XmpReader(byte[] bytes) throws SAXException, IOException 

Source Link

Document

Constructs an XMP reader

Usage

From source file:org.crossref.pdfmark.XmpUtils.java

License:Open Source License

/**
 * Parse out all the XmpSchema from a blob of XMP data.
 *//*  w  ww .j a  v a2 s .  co m*/
public static XmpSchema[] parseSchemata(byte[] xmpData) throws XmpException {
    Document doc = null;

    try {
        XmpReader reader = new XmpReader(xmpData);
        byte[] xmlData = reader.serializeDoc();
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);
        DocumentBuilder builder = factory.newDocumentBuilder();
        doc = builder.parse(new ByteArrayInputStream(xmlData));
    } catch (IOException e) {
        throw new XmpException(e);
    } catch (SAXException e) {
        throw new XmpException(e);
    } catch (ParserConfigurationException e) {
        throw new XmpException(e);
    }

    NodeList descriptionNodes = doc.getElementsByTagName("rdf:Description");
    Map<String, XmpSchema> schemata = new HashMap<String, XmpSchema>();

    for (int i = 0; i < descriptionNodes.getLength(); i++) {
        Element description = (Element) descriptionNodes.item(i);
        NodeList children = description.getChildNodes();

        for (int j = 0; j < children.getLength(); j++) {
            Node n = children.item(j);
            if (n instanceof Element) {
                parseRdfElement(schemata, (Element) n);
            }
        }
    }

    return schemata.values().toArray(new XmpSchema[0]);
}

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