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Posted to fop-dev@xmlgraphics.apache.org by "M.H. (Jira)" <ji...@apache.org> on 2020/03/04 08:23:00 UTC
[jira] [Updated] (FOP-2914) NPE during FO 2 IF transformation with
instream-foreign-object using Saxon
[ https://issues.apache.org/jira/browse/FOP-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
M.H. updated FOP-2914:
----------------------
Description:
So far, we used Xalan (2.7.2) as the XSLT Processor to transform our XML/XSL to FO and further to IF (intermediate format) to concat these to one file that is finally rendered to PDF (to avoid multiple fonts via PDF concatenation). We now have a current version of a 3rd party library that breaks our app because of Xalan (known bug: [https://stackoverflow.com/questions/45152707/transformerfactory-and-xalan-dependency-conflict]) . So we investigated a lot of time, adjusted our XMl APIs, converted to JAXB, removed Xalan and werent able to use the JDK 11 internal XSLT processor because our (hundreds of) XSLTs don't work anymore because they only seem to work with a "lazy" XSLT processor like Xalan. For this reason, we evaluate the Saxon XSLT processor. With *Saxon*, most things work again except one bug:
We (have to) include SVG files with instream-foreign-object:
{code:xml}
<fo:instream-foreign-object>
<svg:svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="120mm" height="120mm" >
<svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="Test.svg" width="120mm" height="120mm"/>
</svg:svg>
</fo:instream-foreign-object>
{code}
And during the transformation of the FO to Apaches intermediate format IF, a NullPointerException occurs:
{code:java}
Error while rendering page 1. Reason: java.lang.NullPointerException at org.apache.fop.events.EventExceptionManager.throwException(EventExceptionManager.java:74) at org.apache.fop.events.DefaultEventBroadcaster$1.invoke(DefaultEventBroadcaster.java:173) at com.sun.proxy.$Proxy11.pageRenderingError(Unknown Source) at org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:206) at org.apache.fop.area.RenderPagesModel.checkPreparedPages(RenderPagesModel.java:174) at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:146) at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:316) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:243) at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.makeNewPage(AbstractPageSequenceLayoutManager.java:287) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.makeNewPage(PageSequenceLayoutManager.java:192) at org.apache.fop.layoutmgr.PageBreaker.handleBreakTrait(PageBreaker.java:633) at org.apache.fop.layoutmgr.PageBreaker.startPart(PageBreaker.java:511) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:659) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:604) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:599) at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:338) at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:458) at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:143) at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267) at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130) at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360) at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190) at de.icomps.xml.FOP$HandlerXML.endElement(FOP.java:1624) at net.sf.saxon.event.ContentHandlerProxy.endElement(ContentHandlerProxy.java:412) at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:185) at net.sf.saxon.event.SequenceNormalizer.endElement(SequenceNormalizer.java:230) at net.sf.saxon.event.ReceivingContentHandler.endElement(ReceivingContentHandler.java:528) at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:435) at net.sf.saxon.event.Sender.send(Sender.java:167) at net.sf.saxon.jaxp.IdentityTransformer.transform(IdentityTransformer.java:368) at de.icomps.xml.FOP.transformFO(FOP.java:1055) at de.icomps.xml.FOP.fo2IF(FOP.java:789) at de.icomps.rep.Report.createWithFOP(Report.java:3772) at de.icomps.rep.Report.processReport(Report.java:2078) at de.icomps.rep.ReportClient.createClientReport(ReportClient.java:266) at de.icomps.rep.ReportClientMulti.genClientReportSingle(ReportClientMulti.java:2537) at de.icomps.rep.ReportClientMulti.genClientReports(ReportClientMulti.java:1804) at de.icomps.rep.ReportClientMulti.createReport(ReportClientMulti.java:288) at de.icomps.rep.Report.startProcessing(Report.java:1548) at de.icomps.ijs.JobTask.startJob(JobTask.java:412) at de.icomps.ijs.JobTask.run(JobTask.java:154) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.lang.NullPointerException at net.sf.saxon.event.ReceivingContentHandler.getNodeName(ReceivingContentHandler.java:485) at net.sf.saxon.event.ReceivingContentHandler.startElement(ReceivingContentHandler.java:398) at org.apache.fop.util.DelegatingContentHandler.startElement(DelegatingContentHandler.java:185) at org.apache.fop.util.DOM2SAX.writeNode(DOM2SAX.java:263) at org.apache.fop.util.DOM2SAX.writeDocument(DOM2SAX.java:73) at org.apache.fop.render.intermediate.IFSerializer.drawImage(IFSerializer.java:508) at org.apache.fop.render.intermediate.IFRenderer.renderForeignObject(IFRenderer.java:1312) at org.apache.fop.render.AbstractRenderer.renderInlineViewport(AbstractRenderer.java:864) at org.apache.fop.render.AbstractPathOrientedRenderer.renderInlineViewport(AbstractPathOrientedRenderer.java:831) at org.apache.fop.render.intermediate.IFRenderer.renderInlineViewport(IFRenderer.java:862) at org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:717) at org.apache.fop.render.intermediate.IFRenderer.renderInlineArea(IFRenderer.java:926) at org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:692) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:573) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:756) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:601) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderFlow(AbstractRenderer.java:459) at org.apache.fop.render.AbstractPathOrientedRenderer.renderFlow(AbstractPathOrientedRenderer.java:784) at org.apache.fop.render.AbstractRenderer.renderMainReference(AbstractRenderer.java:436) at org.apache.fop.render.AbstractRenderer.renderBodyRegion(AbstractRenderer.java:360) at org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:307) at org.apache.fop.render.intermediate.IFRenderer.renderRegionViewport(IFRenderer.java:737) at org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:272) at org.apache.fop.render.AbstractRenderer.renderPage(AbstractRenderer.java:245) at org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:587) at org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:193) ... 48 more
{code}
Trying
{code:xml}
<fo:external-graphic height="120mm" width="120mm" src="Test.svg"/> {code}
the error does not occur, but the output is wrong (SVG is not displayed correctly - this is the case since FOP 0.95, etc.).
We tested with our current FOP 2.3 and also with the latest FOP 2.4; used different SVG files, fiddled with several parameters of instream-foreign-object / svg:svg / svg: image, ....always same error.
So we end up not being able to use the JDK internal XSLT or Xalan XSLT processor and are stuck with Saxon at this single NullPointerException during FO to IF transaformation. We spend yesterday the whole day (!) search for solutions / workarounds on the web but the only hint we found was something with namespaces or empty URIs.
was:
So far, we used Xalan (2.7.2) as the XSLT Processor to transform our XML/XSL to FO and further ti IF (intermediate format) to concat these to one file that is finally rendered to PDF (to avoid multiple fonts via PDF concatenation). We now have a current version of a 3rd party library that breaks our app because of Xalan (known bug: [https://stackoverflow.com/questions/45152707/transformerfactory-and-xalan-dependency-conflict]) . So we investigated a lot of time, adjusted our XMl APIs, converted to JAXB, removed Xalan and werent able to use the JDK 11 internal XSLT processor becuase our (hundreds of) XSLTs don't work because they only seem to work with a "lazy" XSLT processor like Xalan. For this reason we evaluate the Saxon XSLT processor. With *Saxon*, most things work again except one bug:
We (have to) include SVG files with instream-foreign-object:
{code:xml}
<fo:instream-foreign-object>
<svg:svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="120mm" height="120mm" >
<svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="Test.svg" width="120mm" height="120mm"/>
</svg:svg>
</fo:instream-foreign-object>
{code}
And during the transformation of the FO to Apaches intermediate format IF, a NullPointerException occurs:
{code:java}
Error while rendering page 1. Reason: java.lang.NullPointerException at org.apache.fop.events.EventExceptionManager.throwException(EventExceptionManager.java:74) at org.apache.fop.events.DefaultEventBroadcaster$1.invoke(DefaultEventBroadcaster.java:173) at com.sun.proxy.$Proxy11.pageRenderingError(Unknown Source) at org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:206) at org.apache.fop.area.RenderPagesModel.checkPreparedPages(RenderPagesModel.java:174) at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:146) at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:316) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:243) at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.makeNewPage(AbstractPageSequenceLayoutManager.java:287) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.makeNewPage(PageSequenceLayoutManager.java:192) at org.apache.fop.layoutmgr.PageBreaker.handleBreakTrait(PageBreaker.java:633) at org.apache.fop.layoutmgr.PageBreaker.startPart(PageBreaker.java:511) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:659) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:604) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:599) at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:338) at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:458) at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:143) at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267) at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130) at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360) at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190) at de.icomps.xml.FOP$HandlerXML.endElement(FOP.java:1624) at net.sf.saxon.event.ContentHandlerProxy.endElement(ContentHandlerProxy.java:412) at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:185) at net.sf.saxon.event.SequenceNormalizer.endElement(SequenceNormalizer.java:230) at net.sf.saxon.event.ReceivingContentHandler.endElement(ReceivingContentHandler.java:528) at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:435) at net.sf.saxon.event.Sender.send(Sender.java:167) at net.sf.saxon.jaxp.IdentityTransformer.transform(IdentityTransformer.java:368) at de.icomps.xml.FOP.transformFO(FOP.java:1055) at de.icomps.xml.FOP.fo2IF(FOP.java:789) at de.icomps.rep.Report.createWithFOP(Report.java:3772) at de.icomps.rep.Report.processReport(Report.java:2078) at de.icomps.rep.ReportClient.createClientReport(ReportClient.java:266) at de.icomps.rep.ReportClientMulti.genClientReportSingle(ReportClientMulti.java:2537) at de.icomps.rep.ReportClientMulti.genClientReports(ReportClientMulti.java:1804) at de.icomps.rep.ReportClientMulti.createReport(ReportClientMulti.java:288) at de.icomps.rep.Report.startProcessing(Report.java:1548) at de.icomps.ijs.JobTask.startJob(JobTask.java:412) at de.icomps.ijs.JobTask.run(JobTask.java:154) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.lang.NullPointerException at net.sf.saxon.event.ReceivingContentHandler.getNodeName(ReceivingContentHandler.java:485) at net.sf.saxon.event.ReceivingContentHandler.startElement(ReceivingContentHandler.java:398) at org.apache.fop.util.DelegatingContentHandler.startElement(DelegatingContentHandler.java:185) at org.apache.fop.util.DOM2SAX.writeNode(DOM2SAX.java:263) at org.apache.fop.util.DOM2SAX.writeDocument(DOM2SAX.java:73) at org.apache.fop.render.intermediate.IFSerializer.drawImage(IFSerializer.java:508) at org.apache.fop.render.intermediate.IFRenderer.renderForeignObject(IFRenderer.java:1312) at org.apache.fop.render.AbstractRenderer.renderInlineViewport(AbstractRenderer.java:864) at org.apache.fop.render.AbstractPathOrientedRenderer.renderInlineViewport(AbstractPathOrientedRenderer.java:831) at org.apache.fop.render.intermediate.IFRenderer.renderInlineViewport(IFRenderer.java:862) at org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:717) at org.apache.fop.render.intermediate.IFRenderer.renderInlineArea(IFRenderer.java:926) at org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:692) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:573) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:756) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:601) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderFlow(AbstractRenderer.java:459) at org.apache.fop.render.AbstractPathOrientedRenderer.renderFlow(AbstractPathOrientedRenderer.java:784) at org.apache.fop.render.AbstractRenderer.renderMainReference(AbstractRenderer.java:436) at org.apache.fop.render.AbstractRenderer.renderBodyRegion(AbstractRenderer.java:360) at org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:307) at org.apache.fop.render.intermediate.IFRenderer.renderRegionViewport(IFRenderer.java:737) at org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:272) at org.apache.fop.render.AbstractRenderer.renderPage(AbstractRenderer.java:245) at org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:587) at org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:193) ... 48 more
{code}
Trying
{code:xml}
<fo:external-graphic height="120mm" width="120mm" src="Test.svg"/> {code}
the error does not occur, but the output is wrong (SVG is not displayed correctly - this was the case already years ago with FOP 0.95, etc.).
We tested with our current FOP 2.3 and also with the latest FOP 2.4; used different SVG files, fiddled with several parameters of instream-foreign-object / svg:svg / svg: image, ....always same error.
So we and up not being able to use JDK internal or Xalan XSLT processor and are stuck with Saxon at this single NullPointerException during FO to IF transaformation.
> NPE during FO 2 IF transformation with instream-foreign-object using Saxon
> --------------------------------------------------------------------------
>
> Key: FOP-2914
> URL: https://issues.apache.org/jira/browse/FOP-2914
> Project: FOP
> Issue Type: Bug
> Environment: Windows 10, OpenJDK 11.0.2, Fop 2.3 (Fop 2.4)
> Reporter: M.H.
> Priority: Major
>
> So far, we used Xalan (2.7.2) as the XSLT Processor to transform our XML/XSL to FO and further to IF (intermediate format) to concat these to one file that is finally rendered to PDF (to avoid multiple fonts via PDF concatenation). We now have a current version of a 3rd party library that breaks our app because of Xalan (known bug: [https://stackoverflow.com/questions/45152707/transformerfactory-and-xalan-dependency-conflict]) . So we investigated a lot of time, adjusted our XMl APIs, converted to JAXB, removed Xalan and werent able to use the JDK 11 internal XSLT processor because our (hundreds of) XSLTs don't work anymore because they only seem to work with a "lazy" XSLT processor like Xalan. For this reason, we evaluate the Saxon XSLT processor. With *Saxon*, most things work again except one bug:
> We (have to) include SVG files with instream-foreign-object:
> {code:xml}
> <fo:instream-foreign-object>
> <svg:svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="120mm" height="120mm" >
> <svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="Test.svg" width="120mm" height="120mm"/>
> </svg:svg>
> </fo:instream-foreign-object>
> {code}
> And during the transformation of the FO to Apaches intermediate format IF, a NullPointerException occurs:
> {code:java}
> Error while rendering page 1. Reason: java.lang.NullPointerException at org.apache.fop.events.EventExceptionManager.throwException(EventExceptionManager.java:74) at org.apache.fop.events.DefaultEventBroadcaster$1.invoke(DefaultEventBroadcaster.java:173) at com.sun.proxy.$Proxy11.pageRenderingError(Unknown Source) at org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:206) at org.apache.fop.area.RenderPagesModel.checkPreparedPages(RenderPagesModel.java:174) at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:146) at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:316) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:243) at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.makeNewPage(AbstractPageSequenceLayoutManager.java:287) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.makeNewPage(PageSequenceLayoutManager.java:192) at org.apache.fop.layoutmgr.PageBreaker.handleBreakTrait(PageBreaker.java:633) at org.apache.fop.layoutmgr.PageBreaker.startPart(PageBreaker.java:511) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:659) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:604) at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:599) at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:338) at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:458) at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112) at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:143) at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267) at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130) at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360) at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190) at de.icomps.xml.FOP$HandlerXML.endElement(FOP.java:1624) at net.sf.saxon.event.ContentHandlerProxy.endElement(ContentHandlerProxy.java:412) at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:185) at net.sf.saxon.event.SequenceNormalizer.endElement(SequenceNormalizer.java:230) at net.sf.saxon.event.ReceivingContentHandler.endElement(ReceivingContentHandler.java:528) at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:435) at net.sf.saxon.event.Sender.send(Sender.java:167) at net.sf.saxon.jaxp.IdentityTransformer.transform(IdentityTransformer.java:368) at de.icomps.xml.FOP.transformFO(FOP.java:1055) at de.icomps.xml.FOP.fo2IF(FOP.java:789) at de.icomps.rep.Report.createWithFOP(Report.java:3772) at de.icomps.rep.Report.processReport(Report.java:2078) at de.icomps.rep.ReportClient.createClientReport(ReportClient.java:266) at de.icomps.rep.ReportClientMulti.genClientReportSingle(ReportClientMulti.java:2537) at de.icomps.rep.ReportClientMulti.genClientReports(ReportClientMulti.java:1804) at de.icomps.rep.ReportClientMulti.createReport(ReportClientMulti.java:288) at de.icomps.rep.Report.startProcessing(Report.java:1548) at de.icomps.ijs.JobTask.startJob(JobTask.java:412) at de.icomps.ijs.JobTask.run(JobTask.java:154) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.lang.NullPointerException at net.sf.saxon.event.ReceivingContentHandler.getNodeName(ReceivingContentHandler.java:485) at net.sf.saxon.event.ReceivingContentHandler.startElement(ReceivingContentHandler.java:398) at org.apache.fop.util.DelegatingContentHandler.startElement(DelegatingContentHandler.java:185) at org.apache.fop.util.DOM2SAX.writeNode(DOM2SAX.java:263) at org.apache.fop.util.DOM2SAX.writeDocument(DOM2SAX.java:73) at org.apache.fop.render.intermediate.IFSerializer.drawImage(IFSerializer.java:508) at org.apache.fop.render.intermediate.IFRenderer.renderForeignObject(IFRenderer.java:1312) at org.apache.fop.render.AbstractRenderer.renderInlineViewport(AbstractRenderer.java:864) at org.apache.fop.render.AbstractPathOrientedRenderer.renderInlineViewport(AbstractPathOrientedRenderer.java:831) at org.apache.fop.render.intermediate.IFRenderer.renderInlineViewport(IFRenderer.java:862) at org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:717) at org.apache.fop.render.intermediate.IFRenderer.renderInlineArea(IFRenderer.java:926) at org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:692) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:573) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:756) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:601) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:615) at org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:998) at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:558) at org.apache.fop.render.AbstractRenderer.renderFlow(AbstractRenderer.java:459) at org.apache.fop.render.AbstractPathOrientedRenderer.renderFlow(AbstractPathOrientedRenderer.java:784) at org.apache.fop.render.AbstractRenderer.renderMainReference(AbstractRenderer.java:436) at org.apache.fop.render.AbstractRenderer.renderBodyRegion(AbstractRenderer.java:360) at org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:307) at org.apache.fop.render.intermediate.IFRenderer.renderRegionViewport(IFRenderer.java:737) at org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:272) at org.apache.fop.render.AbstractRenderer.renderPage(AbstractRenderer.java:245) at org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:587) at org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:193) ... 48 more
> {code}
> Trying
> {code:xml}
> <fo:external-graphic height="120mm" width="120mm" src="Test.svg"/> {code}
> the error does not occur, but the output is wrong (SVG is not displayed correctly - this is the case since FOP 0.95, etc.).
> We tested with our current FOP 2.3 and also with the latest FOP 2.4; used different SVG files, fiddled with several parameters of instream-foreign-object / svg:svg / svg: image, ....always same error.
> So we end up not being able to use the JDK internal XSLT or Xalan XSLT processor and are stuck with Saxon at this single NullPointerException during FO to IF transaformation. We spend yesterday the whole day (!) search for solutions / workarounds on the web but the only hint we found was something with namespaces or empty URIs.
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