/** Creation of a input descriptor based on a supplied Configuration instance. */
public InputDescriptor(Configuration conf) {
if (conf == null) throw new RuntimeException("Null configuration.");
try {
tag = conf.getAttribute("tag", "");
required = conf.getAttributeAsBoolean("required", false);
implied = conf.getAttributeAsBoolean("implied", false);
type = ORB.init().create_interface_tc(conf.getAttribute("type", ""), "");
Configuration[] children = conf.getChildren();
if (children.length > 0) {
criteria = DPML.buildCriteriaElement(children[0]);
}
} catch (Exception e) {
throw new RuntimeException("Failed to configure a input usage decriptor.", e);
}
}
public void process(XPathContext context) throws XPathException {
String effMessage = message.evaluateAsString(context);
int effOrientation = 0;
if (orientation != null) {
String s = orientation.evaluateAsString(context);
try {
effOrientation = Integer.parseInt(s);
effOrientation = BarcodeDimension.normalizeOrientation(effOrientation);
} catch (NumberFormatException nfe) {
throw new ValidationException(nfe);
} catch (IllegalArgumentException iae) {
throw new ValidationException(iae);
}
}
try {
SequenceReceiver out = context.getReceiver();
// Acquire BarcodeGenerator
final BarcodeGenerator gen = BarcodeUtil.getInstance().createBarcodeGenerator(cfg);
// Setup Canvas
final SVGCanvasProvider svg;
if (cfg.getAttributeAsBoolean("useNamespace", true)) {
svg = new SVGCanvasProvider(cfg.getAttribute("prefix", "svg"), effOrientation);
} else {
svg = new SVGCanvasProvider(false, effOrientation);
}
// Generate barcode
gen.generateBarcode(svg, effMessage);
DocumentWrapper wrapper =
new DocumentWrapper(
svg.getDOM(), SVGCanvasProvider.SVG_NAMESPACE, context.getConfiguration());
out.append(wrapper, this.getLocationId(), 1);
} catch (ConfigurationException ce) {
throw new DynamicError("(Barcode4J) " + ce.getMessage());
} catch (BarcodeException be) {
throw new DynamicError("(Barcode4J) " + be.getMessage());
}
}