This brief tutorial discusses how graph matching allows patterns in a graph to be found. This section describes how the values in a solution can be restricted, and covers two such cases (string matching and testing values).
URL: http://jena.apache.org/tutorials/sparql_filters.html
Keywords: Regular expressions, XQuery, SPARQL
Publisher: The Apache Software Foundation
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M
Interactivity type: mixed
- Uses FILTER to formulates queries that eliminate solutions from a result set.
- Interacting with RDF data
- Querying RDF data
- Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
- Uses FILTER to formulates queries that eliminate solutions from a result set.
- Uses FILTER to formulates queries that eliminate solutions from a result set.
- Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
- Querying RDF data
- Interacting with RDF data
- Uses the regular expression (regex()) function for string matching.
- Interacting with RDF data
- Querying RDF data
- Understands the use of SPARQL functions and operators.
- Uses the regular expression (regex()) function for string matching.
- Uses the regular expression (regex()) function for string matching.
- Understands the use of SPARQL functions and operators.
- Querying RDF data
- Interacting with RDF data
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