Interface IQueryBuilder

Interface for building SPARQL queries.
Namespace: VDS.RDF.Query.Builder
Assembly: dotNetRDF.dll
Syntax
public interface IQueryBuilder

Properties

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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
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QueryType

Gets the query type of the generated SPARQL query.
Declaration
SparqlQueryType QueryType { get; }
Property Value
Type Description
SparqlQueryType
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Root

Gets the builder associated with the root graph pattern.
Declaration
IGraphPatternBuilder Root { get; }
Property Value
Type Description
IGraphPatternBuilder
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RootGraphPatternBuilder

Gets the builder associated with the root graph pattern.
Declaration
[Obsolete("Please use Root property")]
GraphPatternBuilder RootGraphPatternBuilder { get; }
Property Value
Type Description
GraphPatternBuilder

Methods

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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
System.Func<INonAggregateExpressionBuilder, SparqlExpression> buildAssignmentExpression
Returns
Type Description
IAssignmentVariableNamePart<IQueryBuilder>
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BuildQuery()

Builds and returns a SparqlQuery.
Declaration
SparqlQuery BuildQuery()
Returns
Type Description
SparqlQuery
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GroupBy(Func<INonAggregateExpressionBuilder, SparqlExpression>)

Adds a GROUP BY clause to the query.
Declaration
IQueryBuilder GroupBy(Func<INonAggregateExpressionBuilder, SparqlExpression> buildGroupingExpression)
Parameters
Type Name Description
System.Func<INonAggregateExpressionBuilder, SparqlExpression> buildGroupingExpression
Returns
Type Description
IQueryBuilder
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GroupBy(String)

Adds a GROUP BY clause to the query.
Declaration
IQueryBuilder GroupBy(string variableName)
Parameters
Type Name Description
System.String variableName
Returns
Type Description
IQueryBuilder
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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
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Having(Func<IExpressionBuilder, BooleanExpression>)

Adds a HAVING clause to the query.
Declaration
IQueryBuilder Having(Func<IExpressionBuilder, BooleanExpression> buildHavingConstraint)
Parameters
Type Name Description
System.Func<IExpressionBuilder, BooleanExpression> buildHavingConstraint
Returns
Type Description
IQueryBuilder
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InlineDataOverQuery(String[])

Adds a VALUES inline data block to the entire query (outside graph patterns).
Declaration
IInlineDataBuilder InlineDataOverQuery(params string[] variables)
Parameters
Type Name Description
System.String[] variables
Returns
Type Description
IInlineDataBuilder
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Limit(Int32)

Applies a LIMIT.
Declaration
IQueryBuilder Limit(int limit)
Parameters
Type Name Description
System.Int32 limit Limit value. Pass negative to disable LIMIT.
Returns
Type Description
IQueryBuilder
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Offset(Int32)

Applies an OFFSET.
Declaration
IQueryBuilder Offset(int offset)
Parameters
Type Name Description
System.Int32 offset
Returns
Type Description
IQueryBuilder
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OrderBy(Func<IExpressionBuilder, SparqlExpression>)

Adds ascending ordering by an expression to the query.
Declaration
IQueryBuilder OrderBy(Func<IExpressionBuilder, SparqlExpression> buildOrderExpression)
Parameters
Type Name Description
System.Func<IExpressionBuilder, SparqlExpression> buildOrderExpression
Returns
Type Description
IQueryBuilder
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OrderBy(String)

Adds ascending ordering by a variable to the query.
Declaration
IQueryBuilder OrderBy(string variableName)
Parameters
Type Name Description
System.String variableName
Returns
Type Description
IQueryBuilder
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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
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OrderByDescending(Func<IExpressionBuilder, SparqlExpression>)

Adds descending ordering by an expression to the query.
Declaration
IQueryBuilder OrderByDescending(Func<IExpressionBuilder, SparqlExpression> buildOrderExpression)
Parameters
Type Name Description
System.Func<IExpressionBuilder, SparqlExpression> buildOrderExpression
Returns
Type Description
IQueryBuilder
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OrderByDescending(String)

Adds descending ordering by a variable to the query.
Declaration
IQueryBuilder OrderByDescending(string variableName)
Parameters
Type Name Description
System.String variableName
Returns
Type Description
IQueryBuilder
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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