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项目描述

Rasqal is a C library for querying RDF graphs, supporting the SPARQL, RDQL, and LAQRS languages. It provides APIs for creating a query and parsing query syntax. It features pluggable triple-stores and matching interfaces, query engines for executing the queries, an API for manipulating results as bindings, and multiple ways to format the results to XML, CSV, TSV, and JSON. It uses the Raptor RDF parser to return triples from RDF content, and can alternatively work with the Redland RDF library's persistent triple stores. It is portable across many POSIX systems.

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2011-02-23 17:34 Back to release list
0.9.25

SPARQL的1.1查询草案增加了对ABS的支持,(),性细胞(),floor()方法,兰德(),圆(),雅轩()和绑定(expr的?风险)。使用DROP和CLEAR沉默是固定的。 ENCODE_FOR_URI()是固定不保留语言和参数的数据类型。 GROUP BY的是固定的,允许一个可选的AS?风险。表达式求值上下文类被添加到存储与计算表达式使用状态。三重引号的文字过报价和他们的语言和数据类型的使用是固定的。初始化随机种子支持加入。查询引擎执行的是固定的几起案件。 rasqal_query_set_store_results()现在的实际工作。
标签: Major feature enhancements
SPARQL 1.1 query draft support was added for ABS(), CEIL(), FLOOR(), RAND(), ROUND(), TZ(), and BIND(expr AS ?var). SILENT with DROP and CLEAR was fixed. ENCODE_FOR_URI() was fixed not to preserve language and datatype of argument. GROUP BY was fixed to allow an optional AS ?var. An expression evaluation context class was added to store state for use with evaluating expressions. Triple-quoted literals over-quoting and their use with language and datatypes were fixed. Random seed initializing support was added. The query engine execution was fixed in several cases. rasqal_query_set_store_results() now actually works.

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