/**

 * Alt2XML

 * Copyright © 2014 František Kučera (frantovo.cz)

 *

 * 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, version 3 of the License.

 *

 * 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, see <http://www.gnu.org/licenses/>.

 */

package cz.frantovo.alt2xml.out.xml;

import cz.frantovo.alt2xml.out.Action;

import cz.frantovo.alt2xml.out.ActionContext;

import cz.frantovo.alt2xml.out.ActionFactory;

import cz.frantovo.alt2xml.out.OutputActionException;

import javax.xml.stream.XMLOutputFactory;

import javax.xml.stream.XMLStreamException;

import javax.xml.stream.XMLStreamWriter;

/**

 * Prints XML.

 *

 * @author Ing. František Kučera (frantovo.cz)

 */

public class XMLActionFactory implements ActionFactory {

	private XMLOutputFactory xmlOutputFactory;

	@Override

	public String getActionCode() {

		return "xml";

	}

	@Override

	public Action getAction(ActionContext context) throws OutputActionException {

		try {

			XMLStreamWriter writer = getXmlOutputFactory().createXMLStreamWriter(context.getOutputStream());

			return new XMLAction(context, writer);

		} catch (XMLStreamException e) {

			throw new OutputActionException("Unable to create XMLStreamWriter", e);

		}

	}

	private XMLOutputFactory getXmlOutputFactory() {

		if (xmlOutputFactory == null) {

			xmlOutputFactory = XMLOutputFactory.newFactory();

		}

		return xmlOutputFactory;

	}

}