[XALANJ-2301] NPE in ElemTemplateElement for a ElemSort as part of an ElemForEach when dynamically generating a Templates

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7
• Xalan info: PatchAvailable
• Assignee: Unassigned
• Reporter: Peter A Royal Jr.
• Created: 15/Jun/06 23:04
• Updated: 17/Oct/08 13:20

Description

The XSL fragment that created this is:

<xsl:apply-templates select="something>
<xsl:sort select="@something"/>
</xsl:apply-templates>

resulting in:

java.lang.NullPointerException
at org.apache.xalan.templates.ElemTemplateElement.getStylesheetRoot(ElemTemplateElement.java:171)
at org.apache.xalan.templates.ElemTemplateElement.resolvePrefixTables(ElemTemplateElement.java:1033)
at org.apache.xalan.templates.ElemTemplateElement.compose(ElemTemplateElement.java:190)
at org.apache.xalan.templates.ElemSort.compose(ElemSort.java:333)
at org.apache.xalan.templates.ElemForEach.compose(ElemForEach.java:136)
at org.apache.xalan.templates.ElemCallTemplate.compose(ElemCallTemplate.java:113)
at org.apache.xalan.templates.ElemApplyTemplates.compose(ElemApplyTemplates.java:127)
at org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:357)
at org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:362)
at org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:362)
at org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:362)
at org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:362)
at org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:362)
at org.apache.xalan.templates.StylesheetRoot.recompose(StylesheetRoot.java:337)
at org.apache.xalan.processor.StylesheetHandler.endDocument(StylesheetHandler.java:468)
... then enters my code

... this occurs because the ElemSort has a single entry in its m_declaredPrefixes vector, an entry for 'xsl'.

A 1-line fix to ElemForEach.java fixes this. In appendChild, when adding a sort element, just add:

newChild.setParentElem( this );

before returning the newChild.

Issue Links

• is duplicated by: XALANJ-2303 NullPointerException when the binding of the xsl namespace prefix is duplicated
• is duplicated by: XALANJ-2460 NPE when using xsl:sort that contains xmlns:xsl