QueryBuilder Class

Provides methods for building queries with a fluent style API.

Inheritance Hierarchy

SystemObject
VDS.RDF.Query.BuilderQueryBuilder

Namespace: VDS.RDF.Query.Builder
Assembly: dotNetRDF (in dotNetRDF.dll) Version:

Syntax

Copy

public class QueryBuilder : IQueryBuilder

Public Class QueryBuilder
	Implements IQueryBuilder

The QueryBuilder type exposes the following members.

Constructors

	Name	Description
	QueryBuilder	Initializes a new instance of the QueryBuilder class

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Properties

	Name	Description
	Prefixes	Gets or sets the namespace mappings for the SPARQL query being built.
	QueryType	Gets the query type of the generated SPARQL query.
	Root	Gets the builder associated with the root graph pattern.
	RootGraphPatternBuilder	Gets the builder associated with the root graph pattern.

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Methods

	Name	Description
	Ask	Creates a new ASK query.
	Bind	Adds a BIND variable assignment to the root graph pattern.
	BuildQuery	Builds and returns a SparqlQuery.
	BuildQuery(SparqlQuery)
	Construct	Creates a new CONSTRUCT WHERE query.
	Construct(ActionIDescribeGraphPatternBuilder)	Creates a new CONSTRUCT query.
	Describe(String)	Creates a new query, which will DESCRIBE the given variables.
	Describe(Uri)	Creates a new query, which will DESCRIBE the given uris.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	GroupBy(String)	Adds a GROUP BY clause to the query.
	GroupBy(FuncINonAggregateExpressionBuilder, SparqlExpression)	Adds a GROUP BY clause to the query.
	GroupBy(SparqlVariable)	Adds a GROUP BY clause to the query.
	Having	Adds a HAVING clause to the query.
	InlineDataOverQuery	Adds a VALUES inline data block to the entire query (outside graph patterns).
	Limit	Applies a LIMIT.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Offset	Applies an OFFSET.
	OrderBy(String)	Adds ascending ordering by a variable to the query.
	OrderBy(FuncIExpressionBuilder, SparqlExpression)	Adds ascending ordering by an expression to the query.
	OrderBy(SparqlVariable)	Adds ascending ordering by a variable to the query.
	OrderByDescending(String)	Adds descending ordering by a variable to the query.
	OrderByDescending(FuncIExpressionBuilder, SparqlExpression)	Adds descending ordering by an expression to the query.
	OrderByDescending(SparqlVariable)	Adds descending ordering by a variable to the query.
	Select(String)	Creates a new SELECT query which will return the given variables.
	Select(SparqlVariable)	Creates a new SELECT query which will return the given variables.
	SelectTExpression(FuncIExpressionBuilder, PrimaryExpressionTExpression)	Creates a new SELECT query which will return an expression.
	SelectAll	Creates a new SELECT * query.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Extension Methods

	Name	Description
	Bind	(Defined by QueryBuilderExtensions.)
	Child(ActionIGraphPatternBuilder)	Overloaded. See Child(ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Child(IQueryBuilder)	Overloaded. See Child(IQueryBuilder). (Defined by QueryBuilderExtensions.)
	Filter(FuncINonAggregateExpressionBuilder, BooleanExpression)	Overloaded. See Filter(FuncINonAggregateExpressionBuilder, BooleanExpression). (Defined by QueryBuilderExtensions.)
	Filter(ISparqlExpression)	Overloaded. See Filter(ISparqlExpression). (Defined by QueryBuilderExtensions.)
	Graph(Uri, ActionIGraphPatternBuilder)	Overloaded. See Graph(Uri, ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Graph(String, ActionIGraphPatternBuilder)	Overloaded. See Graph(String, ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	InlineData	See InlineData(String). (Defined by QueryBuilderExtensions.)
	Minus	See Minus(ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Optional	See Optional(ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Service	See Service(Uri, ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Union(GraphPatternBuilder, GraphPatternBuilder)	Overloaded. See Union(GraphPatternBuilder, GraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Union(ActionIGraphPatternBuilder, ActionIGraphPatternBuilder)	Overloaded. See Union(ActionIGraphPatternBuilder, ActionIGraphPatternBuilder). (Defined by QueryBuilderExtensions.)
	Where(ITriplePattern)	Overloaded. See Where(ITriplePattern). (Defined by QueryBuilderExtensions.)
	Where(ActionITriplePatternBuilder)	Overloaded. See Where(ActionITriplePatternBuilder). (Defined by QueryBuilderExtensions.)

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Remarks

A SparqlQuery is mutable by definition so calling any of the extension methods in this API will cause the existing query it is called on to be changed. You can call Copy on an existing query to create a new copy if you want to make different queries starting from the same base query.

Reference

VDS.RDF.Query.Builder Namespace