SPEX: Streamed and Progressive Evaluation of XPath
نویسندگان
چکیده
منابع مشابه
Towards a Streamed XPath Evaluation
XPath is a language for addressing fragments of XML documents, used in query and transformation languages such as XQuery and XSLT. For many applications it is desirable to process XPath on the fly and progressively against data streams. This diploma thesis is devoted to streamed and progressive evaluation of XPath. A streamed and progressive XPath evaluation considerably reduces the needed memo...
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This paper presents SPEX, a streamed and progressive evaluation of regular path expressions with XPath-like qualifiers against XML streams. SPEX proceeds as follows. An expression is translated in linear time into a network of transducers, most of them having 1-DPDT equivalents. Every stream message is then processed once by the entire network and result fragments are output on the fly. In most...
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We describe a method for the streaming evaluation of XPath queries that have subqueries in predicates. Our method rewrites XPath queries into a set of predicate-free labeled linear-form expressions (LFEs). These LFEs are used to generate a pushdown transducer that enables efficient management of a buffer and hierarchical index at runtime. To the best of our knowledge, our method is the first to...
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ژورنال
عنوان ژورنال: IEEE Transactions on Knowledge and Data Engineering
سال: 2007
ISSN: 1041-4347
DOI: 10.1109/tkde.2007.1063