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 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 * questions.
 */

/**
 * @test
 * @bug 8062518
 * @compile ExtFunc.java
 * @run testng TestExternalDocument
 * @summary Test that nodes from external documents can be accessed with xsl
 * extension functions
 */

import java.io.StringReader;
import java.io.StringWriter;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.URIResolver;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.testng.annotations.Test;

public class TestExternalDocument {

    final String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Test>Doc</Test>";
    final String xsl = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
            + "<xsl:transform version=\"1.0\""
            + " xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" "
            + " xmlns:cfunc=\"http://xml.apache.org/xalan/java/\">"
            + "<xsl:template match=\"/\">"
            + "<xsl:element name=\"root\">"
            + "<xsl:variable name=\"other_doc\" select=\"document(&#39;input&#39;)\"/>"
            + "<!-- Source -->"
            + "<xsl:value-of select=\"cfunc:ExtFunc.test(/Test)\"/>"
            + "<!-- document() -->"
            + "<xsl:value-of select=\"cfunc:ExtFunc.test($other_doc/Test)\"/>"
            + "</xsl:element></xsl:template></xsl:transform>";

    @Test
    public void testAccessExternalDocument() throws Exception {

        //Prepare sources for transormation
        Source src = new StreamSource(new StringReader(xml));
        Source xslsrc = new StreamSource(new StringReader(xsl));

        //Create factory and transformer
        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer t = tf.newTransformer( xslsrc );
        t.setErrorListener(tf.getErrorListener());

        //Set URI Resolver to return the newly constructed xml
        // stream source object from xml test string
        t.setURIResolver(new URIResolver() {
            @Override
            public Source resolve(String href, String base)
                    throws TransformerException {
                return new StreamSource(new StringReader(xml));
            }
        });

        //Prepare output stream
        StringWriter xmlResultString = new StringWriter();
        StreamResult xmlResultStream = new StreamResult(xmlResultString);
        //Transform the xml
        t.transform(src, xmlResultStream);
        //If the document can't be accessed and the bug is in place then
        // reported exception will be thrown during transformation
        System.out.println("Transformation result:"+xmlResultString.toString().trim());
    }
}