[XALANJ-2602] Selected attribute is not iterated correctly

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.1, 2.7.2
• Component/s: transformation, XPath, XSLTC
• Security Level: No security risk; visible to anyone (Ordinary problems in Xalan projects. Anybody can view the issue.)
• Environment: Android 5 and Windows 10 x64
• Assignee: Steven J. Hathaway
• Reporter: Robert Papp
• Created: 07/Aug/16 14:54
• Updated: 07/Aug/16 14:56

Description

items.xml

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<?xml-stylesheet type="text/xsl" href="items.xslt"?>
<root>
  <item name="Item 1">
    <item name="Item 2">
      <item name="Item 3">
        <item name="Item 4" />
      </item>
    </item>
  </item>
</root>

The context where the problem occurs is "Item 4"'s element node.

items.xslt

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
	<xsl:output method="html" encoding="utf-8" />
	<xsl:template match="//item[@name='Item 4']">
		<p>ancestor::item<ul>
		<xsl:for-each select="ancestor::item">
			<li>
				<xsl:value-of select="position()" />
				/
				<xsl:value-of select="last()" />
				:
				<xsl:value-of select="@name" />
			</li>
		</xsl:for-each>
		</ul></p>

		<p>ancestor::item/@name<ul>
		<xsl:for-each select="ancestor::item/@name">
			<li>
				<xsl:value-of select="position()" />
				/
				<xsl:value-of select="last()" />
				:
				<xsl:value-of select="." />
			</li>
		</xsl:for-each>
		</ul></p>
	</xsl:template>
</xsl:stylesheet>

If the parents of the context node are selected, everything is ok, but if the {{@name}}s of each parent is selected, then the iteration stops abruptly without error.

Expected output (sans HTML)

ancestor::item
1 / 3 : Item 1
2 / 3 : Item 2
3 / 3 : Item 3

ancestor::item/@name
1 / 3 : Item 1
2 / 3 : Item 2
3 / 3 : Item 3

Actual output (sans HTML)

ancestor::item
1 / 3 : Item 1
2 / 3 : Item 2
3 / 3 : Item 3

ancestor::item/@name
1 / 3 : Item 1

I tried Java 5 and 8 built-in processor, Chrome 52 and Internet Explorer 11; they all agree that the second iterations should result in 3 items. Originally I found the issue while running a similar XPath query foreach in Android 5.0 on a Galaxy S5, which uses Xalan 2.7.1; on my Windows 10 machine I ran the processing with Xalan 2.7.2 on the classpath:

import java.io.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;

public class Solution {
	public static void main(String[] args) throws IOException, TransformerException {
		TransformerFactory factory = TransformerFactory.newInstance();
		Transformer transformer = factory.newTransformer(new StreamSource(new FileInputStream("items.xslt")));
		StringWriter capture = new StringWriter();
		transformer.transform(new StreamSource(new FileInputStream("items.xml")), new StreamResult(capture));
		System.out.println(capture.toString());
	}
}