Module org.apache.jena.querybuilder
Package org.apache.jena.arq.querybuilder.clauses

Interface SelectClause<T extends AbstractQueryBuilder<T>>

Type Parameters:
T - The Builder type that the clause is part of.
All Known Implementing Classes:
DescribeBuilder, SelectBuilder
public interface SelectClause<T extends AbstractQueryBuilder<T>>
Interface that defines the SelectClause as per http://www.w3.org/TR/2013/REC-sparql11-query-20130321/#rSelectClause

  • Method Summary

    Modifier and Type
    Method
    Description
    T
    addVar(Object var)
    Adds a variable to the select clause.
    T
    addVar(String expr, Object var)
    Adds an expression as variable to the select statement.
    T
    addVar(org.apache.jena.sparql.expr.Expr expr, Object var)
    Adds an expression as variable to the select statement.
    SelectHandler
    getSelectHandler()
    Returns the select handler for this clause
    List<org.apache.jena.sparql.core.Var>
    getVars()
     

  • Method Details

    • getSelectHandler

      SelectHandler getSelectHandler()
      Returns the select handler for this clause
      Returns:
      The SelectHandler that the clause is using

    • addVar

      T addVar(Object var)
      Adds a variable to the select clause. A variable may only be added once. Attempting to add the same variable multiple times will be silently ignored.
      Parameters:
      var - The variable to add.
      Returns:
      This builder for chaining.

    • addVar

      T addVar(org.apache.jena.sparql.expr.Expr expr, Object var)
      Adds an expression as variable to the select statement. Creates an '(Expression as Var)' to the select statement. A variable may only be added once. Attempting to add the same variable multiple times will be silently ignored.
      Parameters:
      expr - The expression to be added
      var - The variable to add.
      Returns:
      This builder for chaining.

    • addVar

      T addVar(String expr, Object var)
      Adds an expression as variable to the select statement. Creates an '(Expression as Var)' to the select statement. A variable may only be added once. Attempting to add the same variable multiple times will be silently ignored.
      Parameters:
      expr - The expression to be added
      var - The variable to add.
      Returns:
      This builder for chaining.

    • getVars

      List<org.apache.jena.sparql.core.Var> getVars()
      Returns:
      A list of all the variables that have been added.