Author: jpz6311whu
Date: Thu Aug 13 05:16:06 2015
New Revision: 1695645
URL: http://svn.apache.org/r1695645
Log:
wiki page for construct quad
Added:
jena/site/trunk/content/documentation/query/construct-quad.mdtext
Added: jena/site/trunk/content/documentation/query/construct-quad.mdtext
URL:
http://svn.apache.org/viewvc/jena/site/trunk/content/documentation/query/construct-quad.mdtext?rev=1695645&view=auto
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+Title: ARQ - A SPARQL Processor for Jena
+
+ARQ is a query engine for [Jena](http://jena.apache.org) that
+supports the
+[SPARQL RDF Query language](http://www.w3.org/TR/sparql11-query/).
+SPARQL is the query language developed by the W3C
+[RDF Data Access Working Group](http://www.w3.org/2001/sw/DataAccess/).
+
+## ARQ Features
+
+- Standard SPARQL
+- Free text search via Lucene
+- SPARQL/Update
+- Access and extension of the SPARQL algebra
+- Support for custom filter functions
+- Property functions for custom processing of semantic
+ relationships
+- Aggregation, GROUP BY and assignment as SPARQL extensions
+- Support for federated query
+- Support for extension to other storage systems
+- Client-support for remote access to any SPARQL endpoint
+
+## Introduction
+
+- [A Brief Tutorial on SPARQL](/tutorials/sparql.html)
+- [Application API](app_api.html) - covers the majority of
+ application usages
+- [Frequently Asked Questions](faq.html)
+- [ARQ Support](support.html)
+- Application [javadoc](/documentation/javadoc/arq/index.html)
+- [Command line utilities](cmds.html)
+- [Querying remote SPARQL services](sparql-remote.html)
+ - [HTTP Authentication for ARQ](http-auth.html)
+- [Logging](logging.html)
+- [Explaining queries](explain.html)
+- [Tutorial: manipulating SPARQL using
ARQ](manipulating_sparql_using_arq.html)
+- [Basic federated query (`SERVICE`)](service.html)
+
+## Advanced SPARQL use
+
+Features of ARQ that were formally ARQ extensions but are now legal SPARQL 1.1:
+
+- [Property paths](property_paths.html)
+- [GROUP BY and counting](group-by.html)
+- [SELECT expressions](select_expr.html)
+- [Sub-SELECT](sub-select.html)
+- [Negation](negation.html)
+- [Conditions in FILTERs](function_forms.html)
+
+Features of ARQ that are legal SPARQL syntax.
+
+- [Free text searches](text-query.html)
+- [Accessing lists](rdf_lists.html) (RDF collections)
+- [Extension mechanisms](extension.html)
+ - [Filter Functions](extension.html#valueFunctions)
+ - [Property Functions](extension.html#propertyFunctions)
+
+- Library
+ - [Filter function library](library-function.html)
+ - [Property function library](library-propfunc.html)
+
+- [Writing ARQ FILTER functions](writing_functions.html)
+- [Constructing queries programmatically](programmatic.html)
+- [Parameterized query strings](parameterized-sparql-strings.html)
+- [ARQ and the SPARQL algebra](algebra.html)
+- [Extending ARQ query execution and accessing different storage
implementations](arq-query-eval.html)
+- [Custom aggregates](custom_aggregates.html)
+
+## Extensions
+
+Feature of ARQ that go beyond SPARQL syntax. The default query
+language is standard SPARQL. These features require the query to be
+parsed with an explicit declaration of `Syntax.syntaxARQ`.
+
+- [LET variable assignment](assignment.html)
+
+## Update
+
+ARQ supports the W3C standard SPARQL Update language.
+
+- [SPARQL Update](http://www.w3.org/TR/sparql11-update/)
+- [The ARQ SPARQL/Update API](update.html)
+
+## See Also
+
+- [Fuseki](../fuseki2/index.html) - Server implementation of the SPARQL
protocol.
+- [TDB - A SPARQL database for Jena](../tdb), a pure Java persistence layer
for large graphs, high performance applications and embedded use.
+- [SDB - A SPARQL database for Jena](../sdb), using SQL databases.
+
+## W3C Documents
+
+- [SPARQL Query Language specification](http://www.w3.org/TR/sparql11-query/)
+- [SPARQL Query Results XML Format](http://www.w3.org/TR/rdf-sparql-XMLres/)
+- [SPARQL Protocol](http://www.w3.org/TR/rdf-sparql-protocol/)
+
+## Articles
+
+Articles and documentation elsewhere:
+
+- [Introducing SPARQL: Querying the Semantic
Web](http://xml.com/lpt/a/2005/11/16/introducing-sparql-querying-semantic-web-tutorial.html)
+ ([xml.com](http://www.xml.com/) article by Leigh Dodds)
+- [Search RDF data with
SPARQL](http://www.ibm.com/developerworks/xml/library/j-sparql/)
+ (by Phil McCarthy) - article published on IBM developer works about
+ SPARQL and Jena.
+- [SPARQL reference card](http://www.dajobe.org/2005/04-sparql/)
+ (by [Dave Beckett](http://www.dajobe.org/))
+- [Parameterised Queries with SPARQL and
ARQ](http://www.ldodds.com/blog/archives/000251.html)
+ (by Leigh Dodds)
+- [Writing an ARQ Extension
Function](http://www.ldodds.com/blog/archives/000252.html)
+ (by Leigh Dodds)
+
+## Miscellaneous Resources
+
+- [Turtle](http://www.w3.org/TeamSubmission/turtle/) - a non-XML
+ RDF serialization
+
+## Online Demo
+
+Online [Query Form](http://www.sparql.org/query.html) for
+experimenting with SPARQL queries.
+
