Example usage for javax.xml.validation ValidatorHandler startDocument

Introduction

In this page you can find the example usage for javax.xml.validation ValidatorHandler startDocument.

Prototype

public void startDocument() throws SAXException;

Source Link

Document

Receive notification of the beginning of a document.

Usage

From source file:stroom.pipeline.server.filter.SchemaFilter.java

private ValidatorHandler getValidator() throws SAXException {
    ValidatorHandler validatorHandler = null;

    if (schemaValidation && schemaPool != null) {
        // Put back the old schema if we need to.
        returnCurrentSchema();//from  w  ww.ja  v a  2s.c o m

        sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
        sb.append("<xsd:schema xmlns:xsd=\"");
        sb.append(schemaLanguage);
        sb.append("\"");
        final CharBuffer namespaces = new CharBuffer(100);
        final CharBuffer locations = new CharBuffer(100);
        for (final String prefix : prefixes.keySet()) {
            final String namespace = prefixes.get(prefix);
            final String location = schemaLocations.get(namespace);
            if (location != null) {
                namespaces.append(" xmlns");
                if (prefix.length() > 0) {
                    namespaces.append(":");
                    namespaces.append(prefix);
                }
                namespaces.append("=\"");
                namespaces.append(namespace);
                namespaces.append("\"");

                locations.append("<xsd:import namespace=\"");
                locations.append(namespace);
                locations.append("\" schemaLocation=\"");
                locations.append(location);
                locations.append("\"/>\n");
            }
        }
        sb.append(namespaces.toString());
        sb.append(">\n");
        sb.append(locations.toString());
        sb.append("</xsd:schema>");

        final String data = sb.toString();
        sb.clear();

        // Get another schema.
        final SchemaKey schemaKey = new SchemaKey(schemaLanguage, data);
        poolItem = schemaPool.borrowObject(schemaKey, true);
        final StoredSchema storedSchema = poolItem.getValue();

        // Replay errors generated when creating schema.
        try {
            storedSchema.getErrorReceiver().replay(errorReceiverProxy);
        } catch (final Exception e) {
            errorHandler.fatalError(new SAXParseException(e.getMessage(), null));
        }

        // Create a validator handler.
        validatorHandler = storedSchema.getSchema().newValidatorHandler();
        validatorHandler.setDocumentLocator(locator);
        validatorHandler.setErrorHandler(errorHandler);

        validatorHandler.startDocument();
        for (final String prefix : prefixes.keySet()) {
            validatorHandler.startPrefixMapping(prefix, prefixes.get(prefix));
        }
    }

    return validatorHandler;
}

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