Package com.hp.hpl.jena.sparql.expr

Examples of com.hp.hpl.jena.sparql.expr.Expr.visit()

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                Expr expr = func.getArg(i) ;
                if ( expr == null )
                    break ;
                // endLine() ;
                out.print(' ') ;
                expr.visit(this) ;
            }
            out.print(")") ;
            out.decIndent() ;
        }
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                Expr expr = func.getArg(i) ;
                if ( expr == null )
                    break ;
                // endLine() ;
                out.print(' ') ;
                expr.visit(this) ;
            }
            out.print(")") ;
            out.decIndent() ;
        }
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                Expr expr = func.getArg(i) ;
                if ( expr == null )
                    break ;
                // endLine() ;
                out.print(' ') ;
                expr.visit(this) ;
            }
            out.print(")") ;
            out.decIndent() ;
        }
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              newOrExpr2 = new E_LogicalOr(rightLeftExpr, rightExpr);
              newAndExpr = new E_LogicalAnd(newOrExpr1, newOrExpr2);
             
              this.resultExpr = newAndExpr;
              // apply for subexpression again
              newAndExpr.visit(this);
            }
           
            if (rightExpr instanceof E_LogicalAnd)
            {
              leftRightExpr = ((E_LogicalAnd)rightExpr).getArg1();
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              newOrExpr2 = new E_LogicalOr(leftExpr, rightRightExpr);
              newAndExpr = new E_LogicalAnd(newOrExpr1, newOrExpr2);
           
              this.resultExpr = newAndExpr;
              // apply for subexpression again
              newAndExpr.visit(this);
            }
          }         
        }else
        {
          // E_LogicalAnd
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      if (curExpr instanceof E_LogicalOr || curExpr instanceof E_LogicalAnd)
      {
        // step down
        leftExpr = ((ExprFunction2)curExpr).getArg1();
        leftExpr.visit(this);
        leftExpr = this.resultExpr;

        // step down
        rightExpr = ((ExprFunction2)curExpr).getArg2();
        rightExpr.visit(this);
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public class ExprTransformTest extends TestCase {

  public void testExprDeMorganDoubleNotA() {
    Expr expr = ExprUtils.parse("!(!(?a))");
    DeMorganLawApplyer apply = new DeMorganLawApplyer();
    expr.visit(apply);
    assertNotNull(apply.result());
    assertEquals("?a", apply.result().toString());
  }
 
  public void testExprDeMorganDoubleNotAB() {
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  }
 
  public void testExprDeMorganDoubleNotAB() {
    Expr expr = ExprUtils.parse("!(!(?a && ?b))");
    DeMorganLawApplyer apply = new DeMorganLawApplyer();
    expr.visit(apply);
    assertNotNull(apply.result());
    assertEquals("( ?a && ?b )", apply.result().toString());
  }
 
  public void testExprDeMorganOr() {
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  }
 
  public void testExprDeMorganOr() {
    Expr expr = ExprUtils.parse("!(?a || ?b)");
    DeMorganLawApplyer apply = new DeMorganLawApplyer();
    expr.visit(apply);
    assertNotNull(apply.result());
    assertEquals("( ( ! ?a ) && ( ! ?b ) )", apply.result().toString());
  }

  public void testExprDeMorganAndDontChange() {
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  }

  public void testExprDeMorganAndDontChange() {
    Expr expr = ExprUtils.parse("!(?a && ?b)");
    DeMorganLawApplyer apply = new DeMorganLawApplyer();
    expr.visit(apply);
    assertNotNull(apply.result());
    assertEquals("( ! ( ?a && ?b ) )", apply.result().toString());
  }
 
  public void testExprDistributiveABOrC() {
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