Method CaseExpr

fe/src/main/java/org/apache/impala/analysis/CaseExpr.java:83–99

(Expr caseExpr, List<CaseWhenClause> whenClauses, Expr elseExpr)

  private boolean hasElseExpr_;

  public CaseExpr(Expr caseExpr, List<CaseWhenClause> whenClauses, Expr elseExpr) {
    super();
    if (caseExpr != null) {
      children_.add(caseExpr);
      hasCaseExpr_ = true;
    }
    for (CaseWhenClause whenClause: whenClauses) {
      Preconditions.checkNotNull(whenClause.getWhenExpr());
      children_.add(whenClause.getWhenExpr());
      Preconditions.checkNotNull(whenClause.getThenExpr());
      children_.add(whenClause.getThenExpr());
    }
    if (elseExpr != null) {
      children_.add(elseExpr);
      hasElseExpr_ = true;
    }
  }

  /**
   * Constructs an equivalent CaseExpr representation.