1. A method for query processing by using a streaming application programming interface (API) for a mark-up language data stream of a textual document, said method comprising: producing, by said streaming API for a mark-up language data stream, an ordered index of all textual elements corresponding to their order in said mark-up language data stream, said ordered index comprising tag identifiers and end positions corresponding to each of said all textual elements; scanning, by a processor, all tag identifiers of said ordered index to determine if there exists a match between a query and any of said tag identifiers; parsing a matched textual element, if a tag identifier, corresponding to said matched textual element, matches said query; and skipping an unmatched textual element for parsing, if a tag identifier, corresponding to said unmatched textual element, does not match said query.
1. A method for query processing by using a streaming application programming interface (API) for a mark-up language data stream of a textual document, said method comprising: producing, by said streaming API for a mark-up language data stream, an ordered index of all textual elements corresponding to their order in said mark-up language data stream, said ordered index comprising tag identifiers and end positions corresponding to each of said all textual elements; scanning, by a processor, all tag identifiers of said ordered index to determine if there exists a match between a query and any of said tag identifiers; parsing a matched textual element, if a tag identifier, corresponding to said matched textual element, matches said query; and skipping an unmatched textual element for parsing, if a tag identifier, corresponding to said unmatched textual element, does not match said query. 4. The method of claim 1 , all the limitations of which are incorporated herein by reference, wherein upon said skipping of said unmatched textual element for parsing, said method further comprises offsetting said parser based upon an end position stored in said ordered index and corresponding to said unmatched textual element.