WSO2 Developer Studio gives error however it works in production

Question

So I have these two lines of code in a sequence in production. cb0token and cb-email are custom headers and it works great however there are a lot of other issues with the production environment so I am trying to make it compatible with the developer studio. I get tons of errors but I cannot for the life of me solve this one.

<?xml version="1.0" encoding="UTF-8"?>
<sequence name="UserSessionValidate" onError="ReturnError"   xmlns="http://ws.apache.org/ns/synapse">
    <property name="token" expression="$trp:cb-token" />
    <property name="email" expression="$trp:cb-email" />
</sequence>

this however works. I just can't get expressions to work. I've tried other variables in the expression also but nothing.

<?xml version="1.0" encoding="UTF-8"?>
<sequence name="UserSessionValidate" onError="ReturnError"   xmlns="http://ws.apache.org/ns/synapse">
    <property name="token" value="value" scope="operation" type="STRING" description="token"/>
</sequence>

This code works in production however when trying to save the file in the developer studio (in eclipse) i get the following error.

java.lang.RuntimeException: XPathFactory#newInstance() failed to create an XPathFactory for the default object model: http://java.sun.com/jaxp/xpath/dom with the XPathFactoryConfigurationException: javax.xml.xpath.XPathFactoryConfigurationException: java.util.ServiceConfigurationError: javax.xml.xpath.XPathFactory: bundleresource://1009.fwk142638629:21/META-INF/services/javax.xml.xpath.XPathFactory:2: Illegal configuration-file syntax
at javax.xml.xpath.XPathFactory.newInstance(Unknown Source)
at org.apache.synapse.util.xpath.SynapseXPath.<init>(SynapseXPath.java:104)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.custom.CustomSynapsePathFactory.getSynapsePath(CustomSynapsePathFactory.java:44)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.PropertyMediatorTransformer.createPropertyMediator(PropertyMediatorTransformer.java:171)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.PropertyMediatorTransformer.transformWithinSequence(PropertyMediatorTransformer.java:74)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.AbstractEsbNodeTransformer.doTransformWithinSequence(AbstractEsbNodeTransformer.java:103)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.SequenceTransformer.transformWithinSequence(SequenceTransformer.java:75)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.DefaultEsbModelExporter.transformSequence(DefaultEsbModelExporter.java:179)
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.DefaultEsbModelExporter.designToSource(DefaultEsbModelExporter.java:324)
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbObjectSourceEditor.update(EsbObjectSourceEditor.java:135)
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbMultiPageEditor.updateSourceEditor(EsbMultiPageEditor.java:548)
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbMultiPageEditor.handleSourceViewActivatedEvent(EsbMultiPageEditor.java:541)
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbMultiPageEditor.pageChange(EsbMultiPageEditor.java:499)
at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:292)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:778)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3080)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1772)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:279)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:140)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)

session data

eclipse.buildId=4.3.2.M20140221-1700
java.version=1.8.0_05
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_GB
Framework arguments:  -product org.eclipse.epp.package.jee.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product

Answer 1

You don't have to uninstall or reinstall Java. In eclipse.ini file you can set concrete jdk to use. Just add -vm parameter before -vmargs.

For example:

--launcher.appendVmargs
-vm 
C:\Program Files\Java\jdk1.7.0_75\bin\javaw.exe    
-vmargs    
-Dosgi.requiredJavaVersion=1.6    
-Xms40m    
-Xmx512m

Answer 2

I just worked through a similar issue. It looks like you are trying to use Java 8, which seems to be unsupported (and broken). Try uninstalling all Java versions and install only Java 7.

WSO2 Developer Studio (3.7.1) error when using expression get-property