18. The one or more non-transitory storage media of claim 16 , wherein said non-leaf tokens comprise tag name tokens, each tag name token of said tag name tokens representing a tag name of a node within said plurality of hierarchical data objects; and wherein said leaf tokens comprise key word tokens, each key word token of said key word tokens representing a word in a data node within said plurality of hierarchical data objects; and wherein generating a hierarchy-value index includes generating a first index that indexes said key word tokens and said at least a portion of said tag name tokens, said hierarchy-value index mapping each token of said key word tokens and said at least a portion of said tag name tokens to one or more token locations within one or more hierarchical data objects of said plurality of hierarchical data objects.
18. The one or more non-transitory storage media of claim 16 , wherein said non-leaf tokens comprise tag name tokens, each tag name token of said tag name tokens representing a tag name of a node within said plurality of hierarchical data objects; and wherein said leaf tokens comprise key word tokens, each key word token of said key word tokens representing a word in a data node within said plurality of hierarchical data objects; and wherein generating a hierarchy-value index includes generating a first index that indexes said key word tokens and said at least a portion of said tag name tokens, said hierarchy-value index mapping each token of said key word tokens and said at least a portion of said tag name tokens to one or more token locations within one or more hierarchical data objects of said plurality of hierarchical data objects. 19. The one or more non-transitory storage media of claim 18 , wherein: said first index comprises first index entries; and wherein for each particular token of said key word tokens and said at least a portion of said tag name tokens, an index entry of said first index entries maps said each particular token to one or more token locations within one or more respective hierarchical data objects.