Examples with AppendingSAXAdapter org.exist.dom.memtree.AppendingSAXAdapter used on opensource projects

Example 1 with AppendingSAXAdapter

use of org.exist.dom.memtree.AppendingSAXAdapter in project exist by eXist-db.

the class DecodeExiFunction method eval.

@Override
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    if (args[0].isEmpty()) {
        return Sequence.EMPTY_SEQUENCE;
    }
    try {
        BinaryValue exiBinary = ((BinaryValue) args[0].itemAt(0));
        context.pushDocumentContext();
        try {
            MemTreeBuilder builder = context.getDocumentBuilder();
            // create default factory and EXI grammar for schema
            EXIFactory exiFactory = DefaultEXIFactory.newInstance();
            if (args.length > 1) {
                if (!args[1].isEmpty()) {
                    Item xsdItem = args[1].itemAt(0);
                    try (InputStream xsdInputStream = EXIUtils.getInputStream(xsdItem, context)) {
                        GrammarFactory grammarFactory = GrammarFactory.newInstance();
                        Grammars grammar = grammarFactory.createGrammars(xsdInputStream);
                        exiFactory.setGrammars(grammar);
                    }
                }
            }
            SAXDecoder decoder = new SAXDecoder(exiFactory);
            SAXAdapter adapter = new AppendingSAXAdapter(builder);
            decoder.setContentHandler(adapter);
            try (InputStream inputStream = exiBinary.getInputStream()) {
                decoder.parse(new InputSource(inputStream));
            }
            return (NodeValue) builder.getDocument().getDocumentElement();
        } finally {
            context.popDocumentContext();
        }
    } catch (EXIException | SAXException | IOException exie) {
        throw new XPathException(this, new JavaErrorCode(exie.getCause()), exie.getMessage());
    }
}