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1. Create newLoanApplication schema. 2. For some complex type, Refactor -> Rename -> enter new name -> Preview. 3. Apply some new design pattern to schema. 4. Refresh Refactoring window. Result: warning appears in the dialog status line. Exception comes into log: java.lang.NullPointerException at org.netbeans.modules.xml.refactoring.spi.RefactoringUtil.checkDuplicateName(RefactoringUtil.java:290) at org.netbeans.modules.xml.refactoring.spi.RefactoringUtil.precheck(RefactoringUtil.java:252) at org.netbeans.modules.bpel.refactoring.Renamer.fastCheckParameters(Renamer.java:106) [catch] at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsFastCheckParams(AbstractRefactoring.java:440) at org.netbeans.modules.refactoring.api.AbstractRefactoring.fastCheckParameters(AbstractRefactoring.java:221) at org.netbeans.modules.xml.refactoring.ui.RenameRefactoringUI.checkParameters(RenameRefactoringUI.java:232) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.stateChanged(ParametersPanel.java:667) at org.netbeans.modules.xml.refactoring.ui.RenamePanel$1.insertUpdate(RenamePanel.java:53) at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:185) at javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:734) at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:693) at javax.swing.text.PlainDocument.insertString(PlainDocument.java:114) at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:655) at javax.swing.text.JTextComponent.setText(JTextComponent.java:1693) at org.netbeans.modules.xml.refactoring.ui.RenamePanel.requestFocus(RenamePanel.java:71) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.placeCustomPanel(ParametersPanel.java:572) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.access$1500(ParametersPanel.java:61) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$10$2.run(ParametersPanel.java:461) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177) at java.awt.Dialog$1.run(Dialog.java:1039) at java.awt.Dialog$3.run(Dialog.java:1091) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:1089) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:812) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:846) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:834) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:82) at org.openide.util.Mutex.doEventAccess(Mutex.java:1201)
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss