string WhereString(OqlExpression thisExpression)
{
StringBuilder sb = new StringBuilder();
if (thisExpression.IsTerminating || thisExpression is IdentifierExpression)
{
if (thisExpression.UnaryOp != null)
{
sb.Append(thisExpression.UnaryOp);
sb.Append(' ');
}
if (thisExpression.Value.GetType().IsPrimitive)
{
sb.Append(Convert.ToString(thisExpression.Value, CultureInfo.InvariantCulture));
}
else
{
IdentifierExpression iexp = thisExpression as IdentifierExpression;
if (iexp != null)
{
sb.Append(iexp.GetAnnotation <string>(anKey));
}
else
{
sb.Append(thisExpression.Value.ToString());
}
}
}
else
{
if (thisExpression.UnaryOp != null)
{
sb.Append(thisExpression.UnaryOp);
sb.Append(' ');
}
if (thisExpression is FunctionExpression)
{
sb.Append(thisExpression.Value);
}
if (thisExpression.HasBrackets)
{
sb.Append('(');
}
string op1 = thisExpression.Operator;
int childExpEndIndex = thisExpression.Children.Count - 1;
for (int i = 0; i <= childExpEndIndex; i++)
{
OqlExpression child = thisExpression.Children[i];
sb.Append(WhereString(child));
if (i < childExpEndIndex)
{
if (op1 != ",")
{
sb.Append(' ');
}
sb.Append(op1);
if (op1 == "BETWEEN")
{
op1 = "AND";
}
sb.Append(' ');
}
}
if (thisExpression.HasBrackets)
{
sb.Append(')');
}
}
return(sb.ToString());
}