Comments after XML declaration cause XQQueryException

gistfile1.java

/**
 * Copyright (C) [2013] [The FURTHeR Project]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.utah.further.core.qunit.xquery;

import java.io.IOException;

import javax.xml.namespace.QName;
import javax.xml.xquery.XQConnection;
import javax.xml.xquery.XQDataSource;
import javax.xml.xquery.XQException;
import javax.xml.xquery.XQPreparedExpression;
import javax.xml.xquery.XQResultSequence;

import net.xqj.basex.BaseXXQDataSource;

import org.basex.BaseXServer;

/**
 * Comments after XML declaration cause XQQueryException
 * <p>
 * -----------------------------------------------------------------------------------<br>
 * (c) 2008-2012 FURTHeR Project, Health Sciences IT, University of Utah<br>
 * Contact: {@code <[email protected]>}<br>
 * Biomedical Informatics, 26 South 2000 East<br>
 * Room 5775 HSEB, Salt Lake City, UT 84112<br>
 * Day Phone: 1-801-581-4080<br>
 * -----------------------------------------------------------------------------------
 * 
 * @author N. Dustin Schultz {@code <[email protected]>}
 * @version Jun 5, 2013
 */
public class Bug
{
  public static void main(final String[] args) throws IOException
	{
		final Thread t = new Thread(new BaseXServer());
		t.start();

		boolean passed = false;

		final String okXml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><element></element>";
		passed = runXQuery(okXml);

		System.out.println("Ok XML passed: " + passed);

		final String problemXml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!-- License Comment --><element></element>";
		passed = runXQuery(problemXml);

		System.out.println("Problem XML passed: " + passed);

	}

	/**
	 * @throws XQException
	 */
	private static boolean runXQuery(final String xml)
	{
		XQConnection conn = null;
		try
		{
			final XQDataSource xqs = new BaseXXQDataSource();
			xqs.setProperty("serverName", "localhost");
			xqs.setProperty("port", "1984");
			xqs.setProperty("user", "admin");
			xqs.setProperty("password", "admin");

			conn = xqs.getConnection();

			final XQPreparedExpression xqpe = conn
					.prepareExpression("declare variable $x as document-node() external; $x");

			xqpe.bindDocument(new QName("x"), xml, null, null);

			final XQResultSequence rs = xqpe.executeQuery();

			while (rs.next())
				System.out.println(rs.getItemAsString(null));

			conn.close();
			return true;
		}
		catch (final XQException e)
		{
			if (conn != null)
			{
				try
				{
					conn.close();
				}
				catch (final XQException e1)
				{
					// ignore
				}
			}
			e.printStackTrace();
			return false;
		}
	}
}