Examples with VarExprList org.apache.jena.sparql.core.VarExprList used on opensource projects

Example 16 with VarExprList

use of org.apache.jena.sparql.core.VarExprList in project jena by apache.

the class OpExtend method create.

/** Make a OpExtend - this does not aggregate (extend .. (extend ...)) */
public static Op create(Op op, Var var, Expr expr) {
    VarExprList x = new VarExprList();
    x.add(var, expr);
    return new OpExtend(op, x);
}

Example 17 with VarExprList

use of org.apache.jena.sparql.core.VarExprList in project jena by apache.

the class PatternVarsVisitor method visit.

@Override
public void visit(ElementSubQuery el) {
    el.getQuery().setResultVars();
    VarExprList x = el.getQuery().getProject();
    acc.addAll(x.getVars());
}

Example 18 with VarExprList

use of org.apache.jena.sparql.core.VarExprList in project jena by apache.

the class SelectClauseTest method testAddVarNode.

@ContractTest
public void testAddVarNode() throws Exception {
    Var v = Var.alloc("one");
    SelectClause<?> selectClause = getProducer().newInstance();
    selectClause.addVar("one");
    Query query = getQuery(selectClause.addVar(NodeFactory.createVariable("one")));
    VarExprList expr = query.getProject();
    assertEquals(1, expr.size());
    assertTrue(expr.contains(v));
}

Example 19 with VarExprList

use of org.apache.jena.sparql.core.VarExprList in project jena by apache.

the class SelectClauseTest method testAddStringVar.

@ContractTest
public void testAddStringVar() throws Exception {
    SelectClause<?> selectClause = getProducer().newInstance();
    AbstractQueryBuilder<?> aqb = selectClause.addVar("rand()", Var.alloc("foo"));
    Query query = getQuery(aqb);
    VarExprList expr = query.getProject();
    assertEquals(1, expr.size());
    Expr e = expr.getExpr(Var.alloc("foo"));
    assertNotNull("expression should not be null", e);
    assertTrue("Should be an E_Random", e instanceof E_Random);
}

Example 20 with VarExprList

use of org.apache.jena.sparql.core.VarExprList in project jena by apache.

the class SelectClauseTest method testAddVarAsterisk.

@ContractTest
public void testAddVarAsterisk() throws Exception {
    SelectClause<?> selectClause = getProducer().newInstance();
    selectClause.addVar("*");
    Query query = getQuery(selectClause.addVar("*"));
    VarExprList expr = query.getProject();
    assertEquals(0, expr.size());
    assertTrue(query.isQueryResultStar());
}