コード例 #1
0
ファイル: ValueUtilsSmi.cs プロジェクト: uQr/referencesource
        private static void SetChars_FromRecord( SmiEventSink_Default sink, ITypedSettersV3 setters, int ordinal, SmiMetaData metaData, SqlDataRecord record, int offset ) {
            int length = 0;

            // Deal with large values by sending bufferLength of NoLengthLimit
            //  CheckXetParameters will ignore length checks in this case
            long bufferLength = record.GetChars(ordinal, 0, null, 0, 0);
            if ( bufferLength > Int32.MaxValue ) {
                bufferLength = NoLengthLimit;
            }
            length = CheckXetParameters( metaData.SqlDbType, metaData.MaxLength, NoLengthLimit /* actual */, 0, checked( (int) bufferLength ), offset, checked( (int) bufferLength - offset ) );

            int chunkSize;
            if ( length > __maxCharChunkSize || length < 0 ) {
                if (MetaDataUtilsSmi.IsAnsiType(metaData.SqlDbType)) {
                    chunkSize = __maxByteChunkSize;
                } else {
                    chunkSize = __maxCharChunkSize;
                }
            }
            else {
                chunkSize = checked( (int)length );
            }

            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 = record.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
            setters.SetCharsLength( sink, ordinal, currentOffset );
            sink.ProcessMessagesAndThrow();
        }
コード例 #2
0
 private static void SetChars_FromRecord(SmiEventSink_Default sink, ITypedSettersV3 setters, int ordinal, SmiMetaData metaData, SqlDataRecord record, int offset)
 {
     int num4;
     long num7;
     int num = 0;
     long num5 = record.GetChars(ordinal, 0L, null, 0, 0);
     if (num5 > 0x7fffffffL)
     {
         num5 = -1L;
     }
     num = CheckXetParameters(metaData.SqlDbType, metaData.MaxLength, -1L, 0L, (int) num5, offset, ((int) num5) - offset);
     if ((num > 0xfa0) || (num < 0))
     {
         if (MetaDataUtilsSmi.IsAnsiType(metaData.SqlDbType))
         {
             num4 = 0x1f40;
         }
         else
         {
             num4 = 0xfa0;
         }
     }
     else
     {
         num4 = num;
     }
     char[] buffer = new char[num4];
     long num3 = 1L;
     long fieldOffset = offset;
     for (long i = 0L; ((num < 0) || (i < num)) && ((0L != (num7 = record.GetChars(ordinal, fieldOffset, buffer, 0, num4))) && (0L != num3)); i += num3)
     {
         num3 = setters.SetChars(sink, ordinal, fieldOffset, buffer, 0, (int) num7);
         sink.ProcessMessagesAndThrow();
         fieldOffset += num3;
     }
     setters.SetCharsLength(sink, ordinal, fieldOffset);
     sink.ProcessMessagesAndThrow();
 }