/// <summary>
///
/// </summary>
public string AddField(FieldEntry field, string xpath)
{
return AddFieldorValue(field.ToString(), xpath);
//return AddField(field.Table, field.FieldName, xpath);
}
/// <summary>
/// Constructs a condition with a field and a string expression
/// Using this overload allows clients to identify fields from values.
/// This is how Select fields are identified by filters
/// </summary>
/// <param name="fieldL"></param>
/// <param name="op"></param>
/// <param name="fieldR"></param>
public ConditionEntry(FieldEntry fieldL, string op, FieldEntry fieldR)
{
this.fieldL = fieldL;
this.expressionL = fieldL.ToString();
this.op = op;
this.fieldR = fieldR;
this.expressionR = fieldR.ToString();
}