/// <summary>
/// Creates an array list from pg represenation of an array.
/// Multidimensional arrays are treated as ArrayLists of ArrayLists
/// </summary>
private ArrayList ToArrayList(NpgsqlBackendTypeInfo TypeInfo, String BackendData, Int16 elementTypeSize,
Int32 elementTypeModifier)
{
ArrayList list = new ArrayList();
//remove the braces on either side and work on what they contain.
string stripBraces = BackendData.Trim().Substring(1, BackendData.Length - 2).Trim();
if (stripBraces.Length == 0)
{
return(list);
}
if (stripBraces[0] == '{')
//there are still braces so we have an n-dimension array. Recursively build an ArrayList of ArrayLists
{
foreach (string arrayChunk in ArrayChunkEnumeration(stripBraces))
{
list.Add(ToArrayList(TypeInfo, arrayChunk, elementTypeSize, elementTypeModifier));
}
}
else
//We're either dealing with a 1-dimension array or treating a row of an n-dimension array. In either case parse the elements and put them in our ArrayList
{
foreach (string token in TokenEnumeration(stripBraces))
{
//Use the NpgsqlBackendTypeInfo for the element type to obtain each element.
list.Add(_elementConverter.ConvertBackendTextToNative(BackendEncoding.UTF8Encoding.GetBytes(token), elementTypeSize, elementTypeModifier));
}
}
return(list);
}
///<summary>
/// This method is responsible to convert the string received from the backend
/// to the corresponding NpgsqlType.
/// The given TypeInfo is called upon to do the conversion.
/// If no TypeInfo object is provided, no conversion is performed.
/// </summary>
public static Object ConvertBackendStringToSystemType(NpgsqlBackendTypeInfo TypeInfo, Byte[] data, Int16 typeSize,
Int32 typeModifier)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "ConvertBackendStringToSystemType");
if (TypeInfo != null)
{
return(TypeInfo.ConvertBackendTextToNative(data, typeSize, typeModifier));
}
else
{
return(BackendEncoding.UTF8Encoding.GetString(data));
}
}
