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POHow to convert Scala Scales XML to DOM/SAX
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  1. POHow to convert Scala Scales XML to DOM/SAX
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    copied!<p>I am trying to transform scales-xml documents into DOM documents or SAX objects based on the example code here: <a href="http://scala-scales.googlecode.com/svn/sites/scales/scales-xml_2.9.2/0.4.4/XSLT.html" rel="nofollow">http://scala-scales.googlecode.com/svn/sites/scales/scales-xml_2.9.2/0.4.4/XSLT.html</a></p> <p>The source only and roundtrip examples work fine, but the scales=>DOM code I wrote returns an empty document, and the scales=>SAX code raises the following exception:</p> <pre><code>ERROR: 'org.xml.sax.SAXException: setResult() must be called prior to startDocument().' </code></pre> <p>Is what I am trying to do supported? If so, what did I get wrong?</p> <p>My sample code and full error trace is given below. </p> <p>Thanks for your help.</p> <p><strong>CODE</strong></p> <pre><code>// scales XML parsing import scales.xml._ import ScalesXml._ object ScalesTransformTest { def main(args:Array[String]) { val elem = Elem("trax"l) val doc = Doc(elem / elem) println( s"scales doc:\n${asString(doc)}" ) import javax.xml.transform._ import org.w3c.dom.Document val tf = TransformerFactory.newInstance val trax = tf.newTransformer val wr = new java.io.StringWriter val str = new stream.StreamResult(wr) trax.transform(doc, str) println( s"\nsource only:\n${wr.toString}" ) val sr = ScalesResult() trax.transform(doc, sr) println( s"\nroundtrip:\n${asString(sr.doc)}" ) val dr = new dom.DOMResult trax.transform(doc, dr) val ddoc = dr.getNode.asInstanceOf[Document] println( s"\nscales=&gt;DOM:\n$ddoc" ) val stf = tf.asInstanceOf[sax.SAXTransformerFactory] val th = stf.newTransformerHandler val strax = th.getTransformer val xr = new sax.SAXResult(th) strax.transform(doc, xr) println( s"\nscales=&gt;SAX:\n$xr" ) } } </code></pre> <p><strong>ERRORS</strong></p> <pre><code>Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8 -Xmx4G -XX:MaxPermSize=1G -XX:+CMSClassUnloadingEnabled [info] [Loading project definition from /Users/eric/git/scala/dgrep/project [info] [Set current project to DGrep (in build file:/Users/eric/git/scala/dgrep/) [info] Running ScalesTransformTest scales doc: &lt;?xml version="1.0" encoding="UTF-8"?&gt;&lt;trax&gt;&lt;trax/&gt;&lt;/trax&gt; source only: &lt;?xml version="1.0" encoding="UTF-8"?&gt;&lt;trax&gt;&lt;trax/&gt;&lt;/trax&gt; roundtrip: &lt;?xml version="1.0" encoding="UTF-16"?&gt;&lt;trax&gt;&lt;trax/&gt;&lt;/trax&gt; scales=&gt;DOM: [#document: null] ERROR: 'org.xml.sax.SAXException: setResult() must be called prior to startDocument().' [error] (run-main) javax.xml.transform.TransformerException: javax.xml.stream.XMLStreamException: org.xml.sax.SAXException: setResult() must be called prior to startDocument(). javax.xml.transform.TransformerException: javax.xml.stream.XMLStreamException: org.xml.sax.SAXException: setResult() must be called prior to startDocument(). at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:739) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:340) at ScalesTransformTest$.main(ScalesTransformTest.scala:36) at ScalesTransformTest.main(ScalesTransformTest.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at sbt.Run.invokeMain(Run.scala:72) at sbt.Run.run0(Run.scala:65) at sbt.Run.sbt$Run$$execute$1(Run.scala:54) at sbt.Run$$anonfun$run$1.apply$mcV$sp(Run.scala:58) at sbt.TrapExit$.sbt$TrapExit$$executeMain$1(TrapExit.scala:33) at sbt.TrapExit$$anon$1.run(TrapExit.scala:42) Caused by: javax.xml.stream.XMLStreamException: org.xml.sax.SAXException: setResult() must be called prior to startDocument(). at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.bridge(StAXStream2SAX.java:210) at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.parse(StAXStream2SAX.java:118) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:678) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:727) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:340) at ScalesTransformTest$.main(ScalesTransformTest.scala:36) at ScalesTransformTest.main(ScalesTransformTest.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at sbt.Run.invokeMain(Run.scala:72) at sbt.Run.run0(Run.scala:65) at sbt.Run.sbt$Run$$execute$1(Run.scala:54) at sbt.Run$$anonfun$run$1.apply$mcV$sp(Run.scala:58) at sbt.TrapExit$.sbt$TrapExit$$executeMain$1(TrapExit.scala:33) at sbt.TrapExit$$anon$1.run(TrapExit.scala:42) Caused by: org.xml.sax.SAXException: setResult() must be called prior to startDocument(). at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerHandlerImpl.startDocument(TransformerHandlerImpl.java:183) at com.sun.org.apache.xml.internal.serializer.ToSAXHandler.startDocumentInternal(ToSAXHandler.java:99) at com.sun.org.apache.xml.internal.serializer.SerializerBase.startDocument(SerializerBase.java:1235) at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.handleStartDocument(StAXStream2SAX.java:239) at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.bridge(StAXStream2SAX.java:153) at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.parse(StAXStream2SAX.java:118) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:678) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:727) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:340) at ScalesTransformTest$.main(ScalesTransformTest.scala:36) at ScalesTransformTest.main(ScalesTransformTest.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at sbt.Run.invokeMain(Run.scala:72) at sbt.Run.run0(Run.scala:65) at sbt.Run.sbt$Run$$execute$1(Run.scala:54) at sbt.Run$$anonfun$run$1.apply$mcV$sp(Run.scala:58) at sbt.TrapExit$.sbt$TrapExit$$executeMain$1(TrapExit.scala:33) at sbt.TrapExit$$anon$1.run(TrapExit.scala:42) [debug] Thread run-main exited. [debug] Interrupting remaining threads (should be all daemons). [debug] Sandboxed run complete.. java.lang.RuntimeException: Nonzero exit code: 1 at scala.sys.package$.error(package.scala:27) at sbt.BuildCommon$$anonfun$toError$1.apply(Defaults.scala:1628) at sbt.BuildCommon$$anonfun$toError$1.apply(Defaults.scala:1628) at scala.Option.foreach(Option.scala:236) at sbt.BuildCommon$class.toError(Defaults.scala:1628) at sbt.Defaults$.toError(Defaults.scala:34) at sbt.Defaults$$anonfun$runMainTask$1$$anonfun$apply$34$$anonfun$apply$35.apply(Defaults.scala:637) at sbt.Defaults$$anonfun$runMainTask$1$$anonfun$apply$34$$anonfun$apply$35.apply(Defaults.scala:633) at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47) at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42) at sbt.std.Transform$$anon$4.work(System.scala:64) at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237) at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237) at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18) at sbt.Execute.work(Execute.scala:244) at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237) at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237) at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160) at sbt.CompletionService$$anon$2.call(CompletionService.scala:30) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722) [error] (compile:runMain) Nonzero exit code: 1 </code></pre>
 

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