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The MMUTATE Transformation
Flexible Querying for XML |
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XMorph also supports mutation of the data's hierarchy. A MUTATE is like a MORPH in that it changes the shape of the hierarchy; but unlike a MORPH, the entire hierarchy is implicitly involved. A mutation is given in below.
Mutating: MUTATE author [ publisher [ title ] ]To run the tutorial queries, use the demo code.
The mutation explicitly lists only three types, but it outputs the entire hierarchy, with two mutations. First it moves <publisher> elements to within the closest <author> elements, and second, it moves <title> elements to also place them under the closest <publisher>. The rest of the hierarchy is not changed.
Curtis E. Dyreson © 2013. All rights reserved.