Interface IQueryBuilder

Interface for building SPARQL queries.

Namespace: VDS.RDF.Query.Builder
Assembly: dotNetRdf.dll
Syntax
public interface IQueryBuilder

Properties

| Edit this page View Source

Prefixes

Gets the prefix manager, which allows adding prefixes to the query or graph pattern.

Declaration
INamespaceMapper Prefixes { get; set; }
Property Value
Type Description
INamespaceMapper
| Edit this page View Source

QueryType

Gets the query type of the generated SPARQL query.

Declaration
SparqlQueryType QueryType { get; }
Property Value
Type Description
SparqlQueryType
| Edit this page View Source

Root

Gets the builder associated with the root graph pattern.

Declaration
IGraphPatternBuilder Root { get; }
Property Value
Type Description
IGraphPatternBuilder
| Edit this page View Source

RootGraphPatternBuilder

Gets the builder associated with the root graph pattern.

Declaration
[Obsolete("Please use Root property", true)]
GraphPatternBuilder RootGraphPatternBuilder { get; }
Property Value
Type Description
GraphPatternBuilder

Methods

| Edit this page View Source

Bind(Func<INonAggregateExpressionBuilder, SparqlExpression>)

Adds a BIND variable assignment to the root graph pattern.

Declaration
IAssignmentVariableNamePart<IQueryBuilder> Bind(Func<INonAggregateExpressionBuilder, SparqlExpression> buildAssignmentExpression)
Parameters
Type Name Description
Func<INonAggregateExpressionBuilder, SparqlExpression> buildAssignmentExpression
Returns
Type Description
IAssignmentVariableNamePart<IQueryBuilder>
| Edit this page View Source

BuildQuery()

Builds and returns a SparqlQuery.

Declaration
SparqlQuery BuildQuery()
Returns
Type Description
SparqlQuery
| Edit this page View Source

GroupBy(Func<INonAggregateExpressionBuilder, SparqlExpression>)

Adds a GROUP BY clause to the query.

Declaration
IQueryBuilder GroupBy(Func<INonAggregateExpressionBuilder, SparqlExpression> buildGroupingExpression)
Parameters
Type Name Description
Func<INonAggregateExpressionBuilder, SparqlExpression> buildGroupingExpression
Returns
Type Description
IQueryBuilder
| Edit this page View Source

GroupBy(string)

Adds a GROUP BY clause to the query.

Declaration
IQueryBuilder GroupBy(string variableName)
Parameters
Type Name Description
string variableName
Returns
Type Description
IQueryBuilder
| Edit this page View Source

GroupBy(SparqlVariable)

Adds a GROUP BY clause to the query.

Declaration
IQueryBuilder GroupBy(SparqlVariable variable)
Parameters
Type Name Description
SparqlVariable variable
Returns
Type Description
IQueryBuilder
| Edit this page View Source

Having(Func<IExpressionBuilder, BooleanExpression>)

Adds a HAVING clause to the query.

Declaration
IQueryBuilder Having(Func<IExpressionBuilder, BooleanExpression> buildHavingConstraint)
Parameters
Type Name Description
Func<IExpressionBuilder, BooleanExpression> buildHavingConstraint
Returns
Type Description
IQueryBuilder
| Edit this page View Source

InlineDataOverQuery(params string[])

Adds a VALUES inline data block to the entire query (outside graph patterns).

Declaration
IInlineDataBuilder InlineDataOverQuery(params string[] variables)
Parameters
Type Name Description
string[] variables
Returns
Type Description
IInlineDataBuilder
| Edit this page View Source

Limit(int)

Applies a LIMIT.

Declaration
IQueryBuilder Limit(int limit)
Parameters
Type Name Description
int limit

Limit value. Pass negative to disable LIMIT.
Returns
Type Description
IQueryBuilder
| Edit this page View Source

Offset(int)

Applies an OFFSET.

Declaration
IQueryBuilder Offset(int offset)
Parameters
Type Name Description
int offset
Returns
Type Description
IQueryBuilder
| Edit this page View Source

OrderBy(Func<IExpressionBuilder, SparqlExpression>)

Adds ascending ordering by an expression to the query.

Declaration
IQueryBuilder OrderBy(Func<IExpressionBuilder, SparqlExpression> buildOrderExpression)
Parameters
Type Name Description
Func<IExpressionBuilder, SparqlExpression> buildOrderExpression
Returns
Type Description
IQueryBuilder
| Edit this page View Source

OrderBy(string)

Adds ascending ordering by a variable to the query.

Declaration
IQueryBuilder OrderBy(string variableName)
Parameters
Type Name Description
string variableName
Returns
Type Description
IQueryBuilder
| Edit this page View Source

OrderBy(SparqlVariable)

Adds ascending ordering by a variable to the query.

Declaration
IQueryBuilder OrderBy(SparqlVariable variable)
Parameters
Type Name Description
SparqlVariable variable
Returns
Type Description
IQueryBuilder
| Edit this page View Source

OrderByDescending(Func<IExpressionBuilder, SparqlExpression>)

Adds descending ordering by an expression to the query.

Declaration
IQueryBuilder OrderByDescending(Func<IExpressionBuilder, SparqlExpression> buildOrderExpression)
Parameters
Type Name Description
Func<IExpressionBuilder, SparqlExpression> buildOrderExpression
Returns
Type Description
IQueryBuilder
| Edit this page View Source

OrderByDescending(string)

Adds descending ordering by a variable to the query.

Declaration
IQueryBuilder OrderByDescending(string variableName)
Parameters
Type Name Description
string variableName
Returns
Type Description
IQueryBuilder
| Edit this page View Source

OrderByDescending(SparqlVariable)

Adds descending ordering by a variable to the query.

Declaration
IQueryBuilder OrderByDescending(SparqlVariable variable)
Parameters
Type Name Description
SparqlVariable variable
Returns
Type Description
IQueryBuilder

Extension Methods