// Use chunking via SetChars to transfer a value from a reader to a gettersetter
private static void SetChars_FromReader(SmiEventSink_Default sink, SmiTypedGetterSetter setters, int ordinal, SmiMetaData metaData, DbDataReader reader, int offset) {
int length = 0;
// Deal with large values by sending bufferLength of NoLengthLimit (== assume
// CheckXetParameters will ignore requested-length checks in this case)
length = CheckXetParameters(metaData.SqlDbType, metaData.MaxLength, NoLengthLimit /* actual */, 0, NoLengthLimit /* buffer length */, offset, NoLengthLimit /* requested length */ );
// Use fixed chunk size for all cases to avoid inquiring from reader.
int chunkSize;
if (MetaDataUtilsSmi.IsAnsiType(metaData.SqlDbType)) {
chunkSize = __maxByteChunkSize;
} else {
chunkSize = __maxCharChunkSize;
}
char[] buffer = new char[ chunkSize ];
long charsRead;
long charsWritten = 1; // prime value to get into write loop
long currentOffset = offset;
long lengthWritten = 0;
while ((length < 0 || lengthWritten < length) &&
0 != (charsRead = reader.GetChars(ordinal, currentOffset, buffer, 0, chunkSize)) &&
0 != charsWritten) {
charsWritten = setters.SetChars(sink, ordinal, currentOffset, buffer, 0, checked((int) charsRead));
sink.ProcessMessagesAndThrow();
checked{ currentOffset += charsWritten; }
checked{ lengthWritten += charsWritten; }
}
// Make sure to trim any left-over data (remember to trim at end of offset, not just the amount written
setters.SetCharsLength(sink, ordinal, currentOffset);
sink.ProcessMessagesAndThrow();
}
private static void SetChars_FromReader(SmiEventSink_Default sink, SmiTypedGetterSetter setters, int ordinal, SmiMetaData metaData, DbDataReader reader, int offset)
{
int num4;
long num6;
int num5 = 0;
num5 = CheckXetParameters(metaData.SqlDbType, metaData.MaxLength, -1L, 0L, -1, offset, -1);
if (MetaDataUtilsSmi.IsAnsiType(metaData.SqlDbType))
{
num4 = 0x1f40;
}
else
{
num4 = 0xfa0;
}
char[] buffer = new char[num4];
long num2 = 1L;
long dataOffset = offset;
for (long i = 0L; ((num5 < 0) || (i < num5)) && ((0L != (num6 = reader.GetChars(ordinal, dataOffset, buffer, 0, num4))) && (0L != num2)); i += num2)
{
num2 = setters.SetChars(sink, ordinal, dataOffset, buffer, 0, (int) num6);
sink.ProcessMessagesAndThrow();
dataOffset += num2;
}
setters.SetCharsLength(sink, ordinal, dataOffset);
sink.ProcessMessagesAndThrow();
}
