QuiXEventStream2XdmNodeConverter.java

/*
QuiXProc: efficient evaluation of XProc Pipelines.
Copyright (C) 2011-2015 Innovimax
All rights reserved.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package innovimax.quixproc.datamodel.convert.saxon;

import javax.xml.stream.XMLStreamReader;
import javax.xml.transform.Source;

import innovimax.quixproc.datamodel.convert.QuiXConvertException;
import innovimax.quixproc.datamodel.convert.QuiXEventStream2XMLStreamReader;
import innovimax.quixproc.datamodel.event.IQuiXEventStreamReader;
import net.sf.saxon.pull.PullSource;
import net.sf.saxon.pull.StaxBridge;
import net.sf.saxon.s9api.DocumentBuilder;
import net.sf.saxon.s9api.SaxonApiException;
import net.sf.saxon.s9api.XdmNode;

public class QuiXEventStream2XdmNodeConverter {
	private final IQuiXEventStreamReader reader;
	private final DocumentBuilder db;
	private XdmNode node = null;

	private static int counter = 1;
	private final int rank = counter++;

	public QuiXEventStream2XdmNodeConverter(DocumentBuilder db, IQuiXEventStreamReader reader) {
		this.reader = reader;
		this.db = db;
	}

	public XdmNode exec() throws QuiXConvertException {
		// System.out.println("DOMConverter.exec("+rank+")");
		try {
			XMLStreamReader xer = new QuiXEventStream2XMLStreamReader(this.reader);
			try {
				StaxBridge sb = new StaxBridge();
				sb.setXMLStreamReader(xer);
				Source source = new PullSource(sb);
				this.node = this.db.build(source);
			} catch (SaxonApiException e) {
				e.printStackTrace();
			} finally {
				this.reader.close();
			}
			return this.node;
		} catch (Exception e) {
			throw new QuiXConvertException(e);
		}
	}

}