@Override
public void undo() {
table.store(foreignKey);
context.store(table);
diagmram.store(connection);
context.getFacet(DiagramFacet.class).store(diagmram);
}
@Override
public void execute() {
foreignKey = (SimpleJmForeignKeyConstraint) context.resolve(connection.getCoreModelRef());
DiagramFacet facet = context.getFacet(DiagramFacet.class);
diagmram = (SimpleJmDiagram) facet.getDiagrams().get(TODO.DIAGRAM_INDEX);
diagmram.deleteConnection(connection.toReference());
facet.store(diagmram);
table = (SimpleJmTable) foreignKey.findDeclaringTable(context.getTables());
table.deleteConstraint(foreignKey.toReference());
context.store(table);
}