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Multi-valued hierarchical facets #3182
Extend hierarchical facets to accept multiple values passed in via an array.
Defining a hierarchical facet on a node, it is possible that a node is a member of multiple hierarchies at the same time. For example, a text could fall into several hierarchical subject categories like science/math or humanities/history. Currently this is not supported: we only allow a single hierarchical facet per dimension.
Multiple hierarchies can be easily described as an XQuery array of sequences like
Type of tests:
See extended xqsuite test.