/// <summary>
/// Gets a PropColumn capable of reading/writing a property of the given
/// DataType
/// </summary>
private PropertyMaps.Handler.PropColumn GetColumn(DataType dataType, string propName
, int dataSize)
{
if (IsPseudoGuidColumn(dataType, propName, dataSize))
{
dataType = DataType.GUID;
}
PropertyMaps.Handler.PropColumn col = _columns.Get(dataType);
if (col == null)
{
// translate long value types into simple types
DataType colType = dataType;
if (dataType == DataType.MEMO)
{
colType = DataType.TEXT;
}
else
{
if (dataType == DataType.OLE)
{
colType = DataType.BINARY;
}
}
// create column with ability to read/write the given data type
col = ((colType == DataType.BOOLEAN) ? new PropertyMaps.Handler.BooleanPropColumn
(this) : new PropertyMaps.Handler.PropColumn(this));
col.SetType(colType);
if (col.IsVariableLength())
{
col.SetLength((short)DataTypeProperties.Get(colType).maxSize.Value);
}
}
return(col);
}
/// <returns>
/// the PropertyMap created from the values parsed from the given
/// data chunk combined with the given property names
/// </returns>
/// <exception cref="System.IO.IOException"></exception>
private PropertyMap ReadPropertyValues(ByteBuffer bbBlock, IList <string> propNames
, short blockType)
{
string mapName = DEFAULT_NAME;
if (bbBlock.HasRemaining())
{
// read the map name, if any
int nameBlockLen = bbBlock.GetInt();
int endPos = bbBlock.Position() + nameBlockLen - 4;
if (nameBlockLen > 6)
{
mapName = ReadPropName(bbBlock);
}
bbBlock.Position(endPos);
}
PropertyMap map = new PropertyMap(mapName, blockType);
// read the values
while (bbBlock.HasRemaining())
{
int valLen = bbBlock.GetShort();
int endPos = bbBlock.Position() + valLen - 2;
byte flag = bbBlock.Get();
DataType dataType = DataTypeUtil.FromByte(bbBlock.Get());
int nameIdx = bbBlock.GetShort();
int dataSize = bbBlock.GetShort();
string propName = propNames[nameIdx];
PropertyMaps.Handler.PropColumn col = GetColumn(dataType, propName, dataSize);
byte[] data = new byte[dataSize];
bbBlock.Get(data);
object value = col.Read(data);
map.Put(propName, dataType, flag, value);
bbBlock.Position(endPos);
}
return(map);
}
