返信ありがとうございます。

サンプルコードを元に試してみたのですがエラーが発生してしまいました。
以下は追加したメニューを選択時に実行されるメソッドです。

■実装ソース
public Object run(IWindow window) throws UnExpectedException {
try {
ProjectAccessor prjAccessor = AstahAPI.getAstahAPI().getProjectAccessor();
IModel project = prjAccessor.getProject();

BasicModelEditor basicModelEditor = ModelEditorFactory.getBasicModelEditor();
// パッケージを作成
IPackage packageA = basicModelEditor.createPackage(project, "PackageA");
// 指定のパッケージにクラスを作成
IClass classA = basicModelEditor.createClass(packageA, "ClassA");
// クラスのタグ付き値を作成
basicModelEditor.createTaggedValue(classA , "tag", "value");

} catch (InvalidEditingException e1) {
System.out.println("ERROR : "+e1.getKey());
e1.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO 自動生成された catch ブロック
e.printStackTrace();
} catch (ProjectNotFoundException e) {
// TODO 自動生成された catch ブロック
e.printStackTrace();
}
}

■エラー内容
com.change_vision.jude.api.inf.exception.InvalidEditingException: Transaction should be set.
at uT.createPackage(X:191)
at com.sequence.SeqTestAction.run(SeqTestAction.java:26)
at com.change_vision.astah.extension.plugin.ui.PluginAction.actionPerformed(X:95)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

エラー箇所は、createPackageの部分でInvalidEditingExceptionのKEYはbadTransactionでした。



エラー箇所がcreateTaggedValueではなかったので、もう一つシーケンス図のメッセージを選択時に
実行するソースを試してみました。
createTaggedValueの第一引数がIElementでしたのでIElementを継承しているIMessageを渡してみました。

■実装ソース
public void entitySelectionChanged(IEntitySelectionEvent arg0) {
try {
// 選択中オブジェクト取得
ProjectAccessor projectAccessor = AstahAPI.getAstahAPI().getProjectAccessor();
IViewManager vm = projectAccessor.getViewManager();
IPresentation[] iPresentations = vm.getDiagramViewManager().getSelectedPresentations();
if (iPresentations.length != 1){
this.setVisible(false);
return;
}
IPresentation iPresentation = iPresentations[0];
if (iPresentation.getType() == "Message"){
IMessage message = (IMessage) iPresentation.getModel();
BasicModelEditor basicModelEditor = ModelEditorFactory.getBasicModelEditor();
basicModelEditor.createTaggedValue(message , "tag", "value");
}else{
this.setVisible(false);
}
} catch (ClassNotFoundException e) {
// TODO 自動生成された catch ブロック
e.printStackTrace();
} catch (InvalidUsingException e) {
// TODO 自動生成された catch ブロック
e.printStackTrace();
} catch (InvalidEditingException e) {
System.out.println("ERROR : "+e.getKey());
e.printStackTrace();
}
}

■エラー内容
com.change_vision.jude.api.inf.exception.InvalidEditingException: Transaction should be set.
at uT.createTaggedValue(X:1534)
at com.sequence.SeqTestView.entitySelectionChanged(SeqTestView.java:312)
at com.change_vision.jude.api.imp.view.c.d(X:261)
at com.change_vision.jude.api.imp.view.c.b(X:252)
at com.change_vision.jude.api.imp.view.k.a(X:88)
at JP.co.esm.caddies.jomt.jview.iU.a(X:936)
at y.a(X:592)
at y.a(X:617)
at bT.b(X:159)
at JP.co.esm.caddies.jomt.jcontrol.mode.DefaultSelectionMode.mouseReleased(X:371)
at bd.e(X:179)
at bd.mouseReleased(X:170)
at JP.co.esm.caddies.golf.view.swing.P.mouseReleased(X:82)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

エラー箇所は、createTaggedValueの部分でInvalidEditingExceptionのKEYは同じくbadTransactionでした。


上記、トランザクションエラーの解決方法がわかりません。
使用しているastah Proが評価中状態であることは何か関係ありますか？