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Home » Eclipse Projects » Eclipse 4 » Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null(Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.core.runtime.content.IContentTypeManager.addContentTypeChangeListener(org.eclipse.core.runtime.content.IContentTypeManager$IC)
Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null [message #1837262] Tue, 26 January 2021 11:46 Go to next message
Mitko Georgiev is currently offline Mitko GeorgievFriend
Messages: 2
Registered: January 2021
Junior Member
Hi all,

I'm trying to compile and export an old 3.4 product in Eclipse 2020-12 using the Compatibility Layer.
It compiles correct and work but when I export (with JRE) the product it doesn't work.
It says:
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.core.runtime.content.IContentTypeManager.addContentTypeChangeListener(org.eclipse.core.runtime.content.IContentTypeManager$IContentTypeChangeListener)" because the return value of "org.eclipse.core.runtime.Platform.getContentTypeManager()" is null


Here is the log:
!SESSION 2021-01-26 13:12:09.102 -----------------------------------------------
eclipse.buildId=unknown
java.version=15.0.2
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Command-line arguments:  -os win32 -ws win32 -arch x86_64

!ENTRY org.eclipse.osgi 4 0 2021-01-26 13:12:14.095
!MESSAGE An error occurred while automatically activating bundle org.eclipse.core.resources (26).
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:835)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:763)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
	at org.eclipse.osgi.container.Module.doStart(Module.java:605)
	at org.eclipse.osgi.container.Module.start(Module.java:468)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
	at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:473)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	at org.eclipse.emf.ecore.plugin.EcorePlugin.getWorkspaceRoot(EcorePlugin.java:1149)
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.getWorkspaceRoot(PlatformResourceURIHandlerImpl.java:488)
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.<clinit>(PlatformResourceURIHandlerImpl.java:456)
	at org.eclipse.emf.ecore.resource.URIHandler.<clinit>(URIHandler.java:51)
	at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.<init>(ExtensibleURIConverterImpl.java:138)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getURIConverter(ResourceSetImpl.java:499)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:369)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.getResource(ResourceHandler.java:287)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadResource(ResourceHandler.java:263)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadMostRecentModel(ResourceHandler.java:181)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application.loadApplicationModel(E4Application.java:384)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application.createE4Workbench(E4Application.java:260)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:573)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156)
	at eu.tmsystem.client.Application.start(Application.java:20)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1461)
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.core.runtime.content.IContentTypeManager.addContentTypeChangeListener(org.eclipse.core.runtime.content.IContentTypeManager$IContentTypeChangeListener)" because the return value of "org.eclipse.core.runtime.Platform.getContentTypeManager()" is null
	at org.eclipse.core.internal.resources.CharsetDeltaJob.startup(CharsetDeltaJob.java:212)
	at org.eclipse.core.internal.resources.CharsetManager.startup(CharsetManager.java:505)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2456)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2210)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:489)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:814)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:806)
	... 43 more
Root exception:
java.lang.NullPointerException: Cannot invoke "org.eclipse.core.runtime.content.IContentTypeManager.addContentTypeChangeListener(org.eclipse.core.runtime.content.IContentTypeManager$IContentTypeChangeListener)" because the return value of "org.eclipse.core.runtime.Platform.getContentTypeManager()" is null
	at org.eclipse.core.internal.resources.CharsetDeltaJob.startup(CharsetDeltaJob.java:212)
	at org.eclipse.core.internal.resources.CharsetManager.startup(CharsetManager.java:505)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2456)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2210)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:489)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:814)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:806)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:763)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
	at org.eclipse.osgi.container.Module.doStart(Module.java:605)
	at org.eclipse.osgi.container.Module.start(Module.java:468)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
	at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:473)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	at org.eclipse.emf.ecore.plugin.EcorePlugin.getWorkspaceRoot(EcorePlugin.java:1149)
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.getWorkspaceRoot(PlatformResourceURIHandlerImpl.java:488)
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.<clinit>(PlatformResourceURIHandlerImpl.java:456)
	at org.eclipse.emf.ecore.resource.URIHandler.<clinit>(URIHandler.java:51)
	at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.<init>(ExtensibleURIConverterImpl.java:138)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getURIConverter(ResourceSetImpl.java:499)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:369)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.getResource(ResourceHandler.java:287)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadResource(ResourceHandler.java:263)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadMostRecentModel(ResourceHandler.java:181)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application.loadApplicationModel(E4Application.java:384)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application.createE4Workbench(E4Application.java:260)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:573)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156)
	at eu.tmsystem.client.Application.start(Application.java:20)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1461)

!ENTRY org.eclipse.osgi 4 0 2021-01-26 13:12:14.111
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/ResourcesPlugin
	at org.eclipse.emf.ecore.plugin.EcorePlugin.getWorkspaceRoot(EcorePlugin.java:1149)
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.getWorkspaceRoot(PlatformResourceURIHandlerImpl.java:488)
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.<clinit>(PlatformResourceURIHandlerImpl.java:456)
	at org.eclipse.emf.ecore.resource.URIHandler.<clinit>(URIHandler.java:51)
	at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.<init>(ExtensibleURIConverterImpl.java:138)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getURIConverter(ResourceSetImpl.java:499)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:369)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.getResource(ResourceHandler.java:287)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadResource(ResourceHandler.java:263)
	at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadMostRecentModel(ResourceHandler.java:181)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application.loadApplicationModel(E4Application.java:384)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application.createE4Workbench(E4Application.java:260)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:573)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156)
	at eu.tmsystem.client.Application.start(Application.java:20)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1461)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (26).
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:126)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
	at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:473)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	... 29 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:835)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:763)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
	at org.eclipse.osgi.container.Module.doStart(Module.java:605)
	at org.eclipse.osgi.container.Module.start(Module.java:468)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
	... 36 more
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.core.runtime.content.IContentTypeManager.addContentTypeChangeListener(org.eclipse.core.runtime.content.IContentTypeManager$IContentTypeChangeListener)" because the return value of "org.eclipse.core.runtime.Platform.getContentTypeManager()" is null
	at org.eclipse.core.internal.resources.CharsetDeltaJob.startup(CharsetDeltaJob.java:212)
	at org.eclipse.core.internal.resources.CharsetManager.startup(CharsetManager.java:505)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2456)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2210)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:489)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:814)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:806)
	... 43 more


Any ideas?

Env:
Windows 10
Eclipse-rcp-2020-12-R-win32-x86_64
JDK 15.02

Thanks in advance!

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Re: Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null [message #1837273 is a reply to message #1837262] Tue, 26 January 2021 18:53 Go to previous messageGo to next message
Rolf Theunissen is currently offline Rolf TheunissenFriend
Messages: 260
Registered: April 2012
Senior Member
Hi,

After a quick look at the source code, I expect that the IContentTypeManager is provided by the org.eclipse.core.contenttype plug-in as an OSGi service. Is this plug-in included in your product? It should also be part of the org.eclipse.core.runtime feature.

Best Regards, Rolf

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Re: Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null [message #1837297 is a reply to message #1837273] Wed, 27 January 2021 09:19 Go to previous messageGo to next message
Mitko Georgiev is currently offline Mitko GeorgievFriend
Messages: 2
Registered: January 2021
Junior Member
Yeah, both are included:

org.eclipse.core.contenttype
org.eclipse.core.runtime

If I exclude some of them when exporting product I receive "Unresolved requirement: Require Bundle:..."

Thanks.

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Re: Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null [message #1838141 is a reply to message #1837297] Wed, 17 February 2021 11:24 Go to previous messageGo to next message
Robert Schulk is currently offline Robert SchulkFriend
Messages: 144
Registered: July 2015
Senior Member
Hi Mitko, I had the same issue and solved it (after quite a while of debugging) by adding org.apache.felix.scr to my product. This plugin needs to be configured for autostart. I cannot tell you why this fixes the problem and would be happy if anyone could give some insight ;).

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Re: Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null [message #1838173 is a reply to message #1838141] Thu, 18 February 2021 07:11 Go to previous messageGo to next message
Rolf Theunissen is currently offline Rolf TheunissenFriend
Messages: 260
Registered: April 2012
Senior Member
HI Robert,

There are some OSGi services that have to be added to your product and started at the correct level, otherwise the framework is not correctly initialized. In case of Felix SCR it is the Declarative Services extension that is added.

See also:
https://wiki.eclipse.org/Eclipse4/RCP/FAQ#Why_won.27t_my_application_start.3F
https://www.eclipse.org/eclipse/news/4.7/platform_isv.php#equinox-ds-felix-scr

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Re: Eclipse 3.x product when exported from Eclipse 2020-12: Platform.getContentTypeManager() is null [message #1838177 is a reply to message #1838173] Thu, 18 February 2021 08:08 Go to previous message
Robert Schulk is currently offline Robert SchulkFriend
Messages: 144
Registered: July 2015
Senior Member
Hi Rolf, thanks for explaining! Strange thing is, that our application ran fine with an eclipse 4.16 target. But the doc clearly says that starting from 4.8, org.apache.felix.scr needs to be activated. I guess we were just lucky until now :).

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