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UserGuide Configuration SPARQL Operators

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Kal Ahmed edited this page Sep 25, 2016 · 10 revisions

Home > User Guide > Configuration API > SPARQL Operators

Configuring SPARQL Operators

SPARQL Operators are a SPARQL extension that allows you to extend how certain operators in SPARQL are evaluated. You can learn more about operators in the SPARQL Operators page of the Developer Guide.

These may be configured quite simply provided they implement the ISparqlOperator interface and have an unparameterized constructor.

@prefix dnr: <http://www.dotnetrdf.org/configuration#> .

[] a dnr:SparqlOperator ;
  dnr:type "VDS.RDF.Query.Operators.DateTime.DateTimeAddition" .
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Basic Tutorial

  1. Getting Started
  2. Library Overview
  3. Hello World
  4. Reading RDF
  5. Writing RDF
  6. Working With Graphs
  7. Typed Values and Lists
  8. Working with Triple Stores
  9. Building SPARQL
  10. Querying with SPARQL
  11. Updating with SPARQL

User Guide

  1. Exceptions
  2. Equality and Comparison
  3. Event Model
  4. Utility Methods
  5. Extension Methods
  6. Using the Namespace Mapper
  7. Storage API
    1. Triple Store Integration
    2. Storage Providers
    3. Servers API
    4. Transactions API
  8. Advanced SPARQL
    1. Result Formatting
    2. SPARQL Datasets
    3. Full Text Querying with SPARQL
    4. Advanced SPARQL Operations
  9. Ontology API
  10. Inference and Reasoning
  11. ASP.NET Integration
    1. Creating SPARQL Endpoints
    2. Deploying with rdfWebDeploy
  12. Global Options
  13. Formatting API
  14. Configuration API
    1. Graphs
    2. Triple Stores
    3. Object Factories
    4. Readers and Writers
    5. SPARQL Endpoints
    6. Query Processors
    7. Update Processors
    8. Protocol Processors
    9. SPARQL Datasets
    10. SPARQL Expression Factories
    11. SPARQL Operators
    12. SPARQL Optimisers
    13. Full Text Query
    14. Reasoners
    15. Storage Providers
    16. User Groups
    17. Permissions
    18. Users
    19. Static Options
    20. Proxy Servers
  15. Handlers API
  16. JSON-LD API
  17. Tools
    1. rdfConvert
    2. rdfEditor
    3. rdfOptStats

Developer Guide

  1. Architecture
  2. Design
  3. Namespaces
  4. SPARQL Engine
  5. SPARQL Optimization
  6. Implementing Custom Optimizers
  7. SPARQL Extensions
  8. SPARQL Performance
  9. URI Interning
  10. Notes for Silverlight and WP7 Developers
  11. Developing for dotNetRDF
  12. Compiling
  13. Code Style
  14. Deprecation Policy
  15. Test Environment

How To

  1. Debug HTTP Communication
  2. Debug SPARQL Queries
  3. Load OWL
  4. Load RDF from a File
  5. Load RDF from the Web
  6. Minimize Memory Usage
  7. Reify Triples

FAQs

Support

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