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Support XSLT 1.0 by way of Saxon 6.5.5 and reflection
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package com.xmlcalabash.steps | ||
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| import com.xmlcalabash.exceptions.XProcException | ||
| import com.xmlcalabash.util.Xslt10Source | ||
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| import java.io.OutputStream | ||
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| class Xslt10(loader: ClassLoader) { | ||
| def transform(document: Xslt10Source, stylesheet: Xslt10Source, stream: OutputStream, params: Map[String, String]): Unit = { | ||
| val factoryClass = loader.loadClass("com.icl.saxon.TransformerFactoryImpl") | ||
| val streamResultClass = loader.loadClass("javax.xml.transform.stream.StreamResult") | ||
| val sourceClass = loader.loadClass("javax.xml.transform.Source") | ||
| val resultClass = loader.loadClass("javax.xml.transform.Result") | ||
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| val factory = factoryClass.getDeclaredConstructor().newInstance() | ||
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| try { | ||
| val newTransformerMethod = factory.getClass.getMethod("newTransformer", sourceClass) | ||
| val transformer = newTransformerMethod.invoke(factory, stylesheet.source) | ||
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| val setParameterMethod = transformer.getClass.getMethod("setParameter", classOf[String], classOf[Any]) | ||
| for ((key, value) <- params) { | ||
| setParameterMethod.invoke(transformer, key, value) | ||
| } | ||
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| val streamResult = streamResultClass.getDeclaredConstructor(classOf[OutputStream]).newInstance(stream) | ||
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| val transformMethod = transformer.getClass.getMethod("transform", sourceClass, resultClass) | ||
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| transformMethod.invoke(transformer, document.source, streamResult) | ||
| } catch { | ||
| case ex: Exception => | ||
| val cause = ex.getCause | ||
| if (Option(cause).isDefined) { | ||
| val message = Option(cause.getMessage).getOrElse("") | ||
| if (message.contains("Processing terminated by xsl:message")) { | ||
| throw XProcException.xcXsltUserTermination(cause.getMessage, None) | ||
| } | ||
| if (message.contains("Failed to compile")) { | ||
| throw XProcException.xcXsltCompileError(message, cause.asInstanceOf[Exception], None) | ||
| } | ||
| } | ||
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| throw ex | ||
| } | ||
| } | ||
| } |
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45 changes: 45 additions & 0 deletions
45
src/main/scala/com/xmlcalabash/util/Xslt10ClassLoader.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package com.xmlcalabash.util | ||
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| import java.net.{URL, URLClassLoader} | ||
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| // Special class loader to load Saxon 6 | ||
| // | ||
| // Adapted from https://dzone.com/articles/java-classloader-handling | ||
| // | ||
| class Xslt10ClassLoader(classpath: Array[URL]) extends ClassLoader(Thread.currentThread().getContextClassLoader) { | ||
| private val childClassLoader = new ChildClassLoader(classpath, new DetectClass(this.getParent)) | ||
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| override protected def loadClass(name: String, resolve: Boolean): Class[_] = { | ||
| try { | ||
| childClassLoader.findClass(name) | ||
| } catch { | ||
| case _: ClassNotFoundException => | ||
| super.loadClass(name, resolve) | ||
| } | ||
| } | ||
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| private class ChildClassLoader(urls: Array[URL], parent: DetectClass) extends URLClassLoader(urls, null) { | ||
| private val realParent = parent | ||
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| override def findClass(name: String): Class[_] = { | ||
| try { | ||
| val loaded = super.findLoadedClass(name) | ||
| if (loaded == null) { | ||
| super.findClass(name) | ||
| } else { | ||
| loaded | ||
| } | ||
| } catch { | ||
| case _: ClassNotFoundException => | ||
| realParent.loadClass(name) | ||
| } | ||
| } | ||
| } | ||
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| private class DetectClass(parent: ClassLoader) extends ClassLoader(parent) { | ||
| override protected def findClass(name: String): Class[_] = { | ||
| super.findClass(name) | ||
| } | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package com.xmlcalabash.util | ||
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| import java.io.StringReader | ||
| import java.net.URI | ||
| import javax.xml.transform.stream.StreamSource | ||
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| class Xslt10Source() { | ||
| private var _source: StreamSource = _ | ||
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| def source: StreamSource = _source | ||
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| def this(document: String, baseURI: URI) = { | ||
| this() | ||
| _source = new StreamSource(new StringReader(document), baseURI.toString) | ||
| } | ||
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| def this(document: URI) = { | ||
| this() | ||
| _source = new StreamSource(document.toURL.openStream(), document.toString) | ||
| } | ||
| } |
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