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POIs it possible to call a Java extension function from Xalan on Android?
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copied!<p>docx4j uses Xalan to convert docx to HTML, and relies heavily on Xalan Java extensions to do the work.</p> <p>But Xalan extensions don't work for me on Android (working with 4.0.3). LogCat says:</p> <pre><code>05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;) 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0096 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.transformer.TransformerImpl.getDebug, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve virtual method 23717: Lorg/apache/xalan/transformer/TransformerImpl;.getDebug ()Z 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x74 at 0x0133 05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;) 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0189 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.transformer.TransformerImpl.getDebug, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve virtual method 23717: Lorg/apache/xalan/transformer/TransformerImpl;.getDebug ()Z 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x74 at 0x028e 05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;) 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.isElementAvailable 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0022 05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;) 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.isFunctionAvailable 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0021 05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;) 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.processElement 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x004c 05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.transformer.TransformerImpl.getDebug, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.processElement 05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve virtual method 23717: Lorg/apache/xalan/transformer/TransformerImpl;.getDebug ()Z 05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x74 at 0x0091 05-14 15:38:02.860: D/AndroidRuntime(7249): Shutting down VM 05-14 15:38:02.860: W/dalvikvm(7249): threadid=1: thread exiting with uncaught exception (group=0x40a531f8) 05-14 15:38:02.860: E/AndroidRuntime(7249): FATAL EXCEPTION: main 05-14 15:38:02.860: E/AndroidRuntime(7249): java.lang.IllegalAccessError: tried to access method org.apache.xalan.extensions.ExtensionHandler.getClassForName:(Ljava/lang/String;Ljava/util/Vector;Ljava/lang/Object;Lorg/apache/xalan/extensions/ExpressionContext;)Ljava/lang/Object; from class org.apache.xalan.extensions.ExtensionHandlerJavaPackage 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:315) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:440) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.extensions.ExtensionsTable.extFunction(ExtensionsTable.java:222) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.extFunction(TransformerImpl.java:417) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xpath.functions.FuncExtFunction.execute(FuncExtFunction.java:208) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xpath.XPath.execute(XPath.java:337) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.templates.ElemVariable.getValue(ElemVariable.java:274) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.templates.ElemVariable.execute(ElemVariable.java:245) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:370) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:175) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2223) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2096) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1228) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:614) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1145) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1123) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.docx4j.XmlUtils.transform(XmlUtils.java:841) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.docx4j.XmlUtils.transform(XmlUtils.java:734) 05-14 15:38:02.860: E/AndroidRuntime(7249): at org.docx4j.convert.out.html.HtmlExporterNG2.html(HtmlExporterNG2.java:269) 05-14 15:38:02.860: E/AndroidRuntime(7249): at com.example.HelloAndroid.HelloAndroid.onCreate(HelloAndroid.java:58) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.Activity.performCreate(Activity.java:4465) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.ActivityThread.access$600(ActivityThread.java:123) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.os.Handler.dispatchMessage(Handler.java:99) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.os.Looper.loop(Looper.java:137) 05-14 15:38:02.860: E/AndroidRuntime(7249): at android.app.ActivityThread.main(ActivityThread.java:4424) 05-14 15:38:02.860: E/AndroidRuntime(7249): at java.lang.reflect.Method.invokeNative(Native Method) 05-14 15:38:02.860: E/AndroidRuntime(7249): at java.lang.reflect.Method.invoke(Method.java:511) 05-14 15:38:02.860: E/AndroidRuntime(7249): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 05-14 15:38:02.860: E/AndroidRuntime(7249): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 05-14 15:38:02.860: E/AndroidRuntime(7249): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Any thoughts on what the problem is exactly, and workarounds?</p>

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