public override DbExpression Visit(DbCoalesceExpression exp)
{
return(exp.Accept(this._generator));
}
public override DbExpression Visit(DbCoalesceExpression exp)
{
return(exp);
}
// a??b
protected override DbExpression VisitBinary_Coalesce(BinaryExpression exp)
{
DbExpression dbExp = new DbCoalesceExpression(this.Visit(exp.Left), this.Visit(exp.Right));
return(dbExp);
}
public abstract T Visit(DbCoalesceExpression exp);