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Inverting Linear Structures by Reshaping
Inverting structures can only move one structure node level at a time since all nodes are out of order for the result so this example requires three structure copies to define the Reshaping operation. This makes it a good example of how the target structure drives the structure transformation process top to bottom and more clearly demonstrates with three structure copies how the synchronizing between structure copies is performed.
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In the example of inversion in Figure 5, you will notice that the inversion logic accesses the source structure’s nodes from the bottom up retrieving from one node from each structure level. First it moves the Project, then Employee, and finally Department nodes. It needs to correctly establish its synchronizing join link point between each step as shown. This is a form of navigation.
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