当对一个java文件进行保存时，我希望触发另一个editor的保存。但是保存不成功，且log里有以下异常。
这个异常是什么意思呢？(xx.a和xx.b是另外那个editor打开的文件)
!ENTRY org.eclipse.ui 2 0 2007-03-09 10:28:02.812
!MESSAGE Save Failed
!STACK 0
java.lang.IllegalArgumentException: Attempted to beginRule: MultiRule[xx.a,xx.b], does not match outer scope rule: ***.java
at org.eclipse.core.runtime.Assert.isLegal(Assert.java:62)
at org.eclipse.core.internal.jobs.ThreadJob.illegalPush(ThreadJob.java:116)
at org.eclipse.core.internal.jobs.ThreadJob.push(ThreadJob.java:225)
at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:58)
at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:219)
at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:96)
at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:1684)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1732)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:113)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.ide.document.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:75)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.ide.document.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:65)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.AbstractDocumentProvider.executeOperation(AbstractDocumentProvider.java:528)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.AbstractDocumentProvider.saveDocument(AbstractDocumentProvider.java:579)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor.performSave(DiagramDocumentEditor.java:825)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor.doSave(DiagramDocumentEditor.java:646)
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老弟，拿我们开刷吧
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晕，
------解决方案--------------------
那就散散分吧，好歹我们也来捧场了
------解决方案--------------------
学习！！