public void Append(object[] values)
{
int offset = 0;
byte[] row = new byte[rowSize];
for (int index = 0; index < fields.Count; index++)
{
string columnName = columnOrders[index];
BinaryField field = fields[columnName];
switch (field.DataType)
{
case BinaryColumnTypeOption.Long:
BitConverter.GetBytes(Convert.ToInt64(values[index])).CopyTo(row, offset);
break;
case BinaryColumnTypeOption.Double:
BitConverter.GetBytes((double)values[index]).CopyTo(row, offset);
break;
case BinaryColumnTypeOption.Integer:
BitConverter.GetBytes((int)values[index]).CopyTo(row, offset);
break;
case BinaryColumnTypeOption.String:
Encoding.ASCII.GetBytes(values[index].ToString().Substring(0, field.Size)).CopyTo(row, offset);
break;
case BinaryColumnTypeOption.Guid:
((Guid)values[index]).ToByteArray().CopyTo(row, offset);
break;
}
offset += field.Size;
}
writer.Write(row);
}
public void RegisterHeader(CacheHeaderInfo header)
{
string fileName = FileHelper.CreateCacheFileName(cacheFolder, header.IdentityCode, header.SubSection, header.CacheId, header.CacheType);
BinaryField[] fields = new BinaryField[header.Columns.Count];
int index = 0;
foreach (CacheColumn column in header.Columns.Values)
{
BinaryColumnTypeOption binaryColumnType = BinaryColumnTypeOption.String;
switch (column.DataType)
{
case CacheDataTypeOption.Double:
binaryColumnType = BinaryColumnTypeOption.Double;
break;
case CacheDataTypeOption.Long:
binaryColumnType = BinaryColumnTypeOption.Long;
break;
case CacheDataTypeOption.String:
binaryColumnType = BinaryColumnTypeOption.String;
break;
case CacheDataTypeOption.Integer:
binaryColumnType = BinaryColumnTypeOption.Integer;
break;
case CacheDataTypeOption.Guid:
binaryColumnType = BinaryColumnTypeOption.Guid;
break;
}
fields[index] = new BinaryField(column.Name, binaryColumnType, column.Size);
index++;
}
if (!binaryFiles.ContainsKey(header.IdentityCode))
{
binaryFiles.Add(header.IdentityCode, new FileCacheItem(fileName, header, fields));
}
}
public object[] Read()
{
int offset = 0;
byte[] row = reader.ReadBytes(this.rowSize);
List<object> values = new List<object>();
if (row.Length > 0)
{
for (int index = 0; index < fields.Count; index++)
{
string columnName = columnOrders[index];
BinaryField field = fields[columnName];
switch (field.DataType)
{
case BinaryColumnTypeOption.Long:
values.Add(BitConverter.ToInt64(row, offset));
break;
case BinaryColumnTypeOption.Double:
values.Add(BitConverter.ToDouble(row, offset));
break;
case BinaryColumnTypeOption.Integer:
values.Add(BitConverter.ToInt32(row, offset));
break;
case BinaryColumnTypeOption.Guid:
byte[] guidBytes= new byte[16];
for (int byteIndex = 0; byteIndex < 16; byteIndex++)
{
guidBytes[byteIndex]= row[offset + byteIndex];
}
values.Add(guidBytes);
break;
case BinaryColumnTypeOption.String:
values.Add(BitConverter.ToString(row, offset));
break;
}
offset += field.Size;
}
}
return values.Count>0? values.ToArray(): null;
}
