public virtual void Visit(BinaryExpression e)
{
var left = e.Operand1;
var right = e.Operand2;
var isNull = false;
if (e.Operand1 is NullExpression)
{
left = e.Operand2;
right = e.Operand1;
isNull = true;
}
else if (e.Operand2 is NullExpression)
{
isNull = true;
}
left.Accept(this);
if (isNull)
{
_sql.Append(" IS");
if (e.Operator == Operator.NotEquals)
{
_sql.Append(" NOT");
}
}
else
{
_sql.Append(" ").Append(e.Operator.GetOperator()).Append(" ");
}
right.Accept(this);
}
public override void Visit(BinaryExpression e)
{
_expression.SetOperand(e);
}
public virtual void Visit(BinaryExpression e)
{
throw new NotSupportedException();
}
public override void Visit(BinaryExpression e)
{
_expression.Operand = e;
}