public RunLengthEncodedBlockCursor(RandomAccessBlock value, int positionCount) { this.value = checkNotNull(value, "value is null"); checkArgument( value.getPositionCount() == 1, "Expected value to contain a single position but has %s positions", value.getPositionCount()); checkArgument(positionCount >= 0, "positionCount is negative"); this.positionCount = positionCount; position = -1; }