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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2015-2022 Saxonica Limited
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

package net.sf.saxon.stax;

import net.sf.saxon.event.Receiver;
import net.sf.saxon.lib.StAXResultHandler;

import javax.xml.transform.Result;
import javax.xml.transform.stax.StAXResult;
import java.util.Properties;

/**
 * StAxResultHandler is used to allow a transformation result to be supplied as a StAXResult.
 * It is loaded dynamically in case StAXResult is not present in the JDK.
 */
public class StAXResultHandlerImpl implements StAXResultHandler {

    @Override
    public Receiver getReceiver(Result result, Properties properties) {
        if (((StAXResult) result).getXMLStreamWriter() != null) {
            return new ReceiverToXMLStreamWriter(((StAXResult) result).getXMLStreamWriter());
        } else if (((StAXResult) result).getXMLEventWriter() != null) {
            throw new UnsupportedOperationException("XMLEventWriter is currently not supported as a Saxon output destination");
        } else {
            throw new IllegalStateException("StAXResult contains neither an XMLStreamWriter nor XMLEventWriter");
        }
    }
}