/// <summary>
/// create where string from params
/// </summary>
/// <param name="whereClause"> params collection</param>
/// <returns> converted string </returns>
private static String p_generateWhereClause(WhereClause whereClause)
{
StringBuilder whereBuilder = new StringBuilder();
//generate where clause
if (whereClause == null)
{
return(whereBuilder.ToString());
}
whereBuilder.Append(" WHERE ");
//convert all columns from whereParameter to where clause
// as result we have WHERE col1 = @col1 and col2 = @col2......
for (int i = 0; i < whereClause.Count; i++)
{
//if current paramater is a string array , then we have IN clause.
//example : columnName IN ( value1, value2)...
if (((valueObject)whereClause.ElementAt(i).Value).inValue.GetType().Name == (typeof(System.String[]).Name))
{
whereBuilder.Append(createINString(whereClause.ElementAt(i)));
}
//regular parameter
else
{
valueObject whereValue = whereClause.ElementAt(i).Value as valueObject;
//create where clause : [ColumnName] [operator] @[parameter]
whereBuilder.AppendFormat(" {0} {1} @{0} ", whereClause.ElementAt(i).Key, whereValue.getOperationString());
}
whereBuilder.Append(" AND ");
}
//remove last "AND "(4 characters)
whereBuilder.Remove(whereBuilder.Length - 4, 4);
return(whereBuilder.ToString());
}
/// <summary>
/// bind NAMED parameters to sql statement
/// </summary>
/// <param name="whereClause"></param>
/// <returns></returns>
private static List <MySqlParameter> p_createParamList(WhereClause whereClause)
{
List <MySqlParameter> paramCol = null;
//add all parameters to current command
if (whereClause != null)
{
paramCol = new List <MySqlParameter>();
for (int i = 0; i < whereClause.Count; i++)
{
String Key = whereClause.ElementAt(i).Key;
valueObject Value = whereClause.ElementAt(i).Value as valueObject;
//if currnt value is string array , add parameters
if (Value.inValue.GetType().Name == (typeof(System.String[]).Name))
{
String[] columns = Value.inValue as String[];
for (int j = 0; j < columns.Length; j++)
{
//add parameters to command in format IN (:COLUMNNAME1,:COLUMNAME2....)
MySqlParameter parameter = new MySqlParameter(String.Format("{0}{1}", Key, j), columns[j]);
paramCol.Add(parameter);
}
}
//else add regular parameter
else
{
MySqlParameter parameter = new MySqlParameter(Key, Value.inValue);
paramCol.Add(parameter);
}
// Log.Trace(String.Format("{0}. {1} = {2}", i, Key, Value)); IFD DD
}
}
return(paramCol);
}
