Struct taos_query::common::raw::layout::Layout

#[repr(transparent)]
pub struct Layout { /* private fields */ }

Inline memory layout for raw block.

Implementations

impl Layout

pub const WITH_TABLE_NAME: Self = _

With table name in the block.

pub const WITH_FIELD_NAMES: Self = _

With field names.

pub const WITH_GROUP_ID: Self = _

If raw data block contains group id.

pub const WITH_FIELD_SCHEMA: Self = _

If raw data contains schema

pub const NCHAR_IS_DECODED: Self = _

If NChar decoded or not in data block.

pub const SCHEMA_CHANGED: Self = _

If Schema has been changed, eg. subset or added some columns.

pub const INLINE_DEFAULT: Self = _

Inline with full raw layout, this is the default behavior.

+-----+----+----+-----+------+---+---+------+-------+------------+
|flags|rows|cols|table|fields|len|gid|schema|lengths|    data    |
+-----+----+----+-----+------+---+---+------+-------+------------+
|2    |4   |4   | dyn | dyn  | 4 | 8 |cols*6|cols*4 |sum(lengths)|
+-----+----+----+-----+------+---+---+------+-------+------------+

pub const INLINE_AS_RAW_BLOCK: Self = _

Inline as raw block only, without table names and field names.

+-----+----+----+---+---+------+-------+------------+
|flags|rows|cols|len|gid|schema|lengths|    data    |
+-----+----+----+---+---+------+-------+------------+
|2    |4   |4   |4  | 8 |cols*6|cols*4 |sum(lengths)|
+-----+----+----+---+---+------+-------+------------+

pub const INLINE_AS_DATA_ONLY: Self = _

Inline as data only to save space.

+-----+----+----+-------+------------|
|flags|rows|cols|lengths|    data    |
+-----+----+----+-------+------------|
|2    |4   |4   |cols*4 |sum(lengths)|
+-----+----+----+-------+------------|

pub const PRECISION_MASK: Self = _

Precision mask.

pub const PRECISION_CLEAR_MASK: Self = _

pub const IS_MILLIS: Self = _

pub const IS_MICROS: Self = _

pub const IS_NANOS: Self = _

pub const FORMAT_MASK: Self = _

pub const IS_RAW_DATA: Self = _

is raw data

pub const IS_RAW_META: Self = _

is raw meta

pub const IS_STB_DATA: Self = _

Is STable data, contains sql schema and table name - tags map.

pub const IS_HEADER: Self = _

Is database schema, used for database rebuild.

pub const fn empty() -> Self

Returns an empty set of flags.

pub const fn all() -> Self

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub const fn from_bits(bits: u32) -> Option<Self>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> Self

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> Self

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: Self) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: Self) -> bool

Returns true if all of the flags in other are contained within self.

pub fn insert(&mut self, other: Self)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Self)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Self)

Toggles the specified flags in-place.

pub fn set(&mut self, other: Self, value: bool)

Inserts or removes the specified flags depending on the passed value.

pub const fn intersection(self, other: Self) -> Self

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

pub const fn union(self, other: Self) -> Self

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

pub const fn difference(self, other: Self) -> Self

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

pub const fn symmetric_difference(self, other: Self) -> Self

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

pub const fn complement(self) -> Self

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

impl Layout

pub fn precision(&self) -> Precision

pub fn expect_table_name(&self) -> bool

pub fn with_table_name(&mut self) -> &mut Self

pub fn expect_field_names(&self) -> bool

pub fn with_field_names(&mut self) -> &mut Self

pub fn nchar_is_decoded(&self) -> bool

pub fn with_nchar_decoded(&mut self) -> &mut Self

pub fn with_precision(&mut self, precision: Precision) -> &mut Self

pub fn with_schema_changed(self) -> Self

pub fn set_schema_changed(&mut self, value: bool) -> &mut Self

pub fn schema_changed(&self) -> bool

pub fn inline_format(&self) -> InlineFormat

pub fn as_inner(&self) -> u32

Trait Implementations

impl Binary for Layout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl BitAnd<Layout> for Layout

fn bitand(self, other: Self) -> Self

Returns the intersection between the two sets of flags.

type Output = Layout

The resulting type after applying the & operator.

impl BitAndAssign<Layout> for Layout

fn bitand_assign(&mut self, other: Self)

Disables all flags disabled in the set.

impl BitOr<Layout> for Layout

fn bitor(self, other: Layout) -> Self

Returns the union of the two sets of flags.

type Output = Layout

The resulting type after applying the | operator.

impl BitOrAssign<Layout> for Layout

fn bitor_assign(&mut self, other: Self)

Adds the set of flags.

impl BitXor<Layout> for Layout

fn bitxor(self, other: Self) -> Self

Returns the left flags, but with all the right flags toggled.

type Output = Layout

The resulting type after applying the ^ operator.

impl BitXorAssign<Layout> for Layout

fn bitxor_assign(&mut self, other: Self)

Toggles the set of flags.

impl Clone for Layout

fn clone(&self) -> Layout

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Layout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Layout

fn default() -> Layout

Returns the “default value” for a type.

impl Extend<Layout> for Layout

fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<Layout> for Layout

fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

Creates a value from an iterator.

impl Hash for Layout

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl LowerHex for Layout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Not for Layout

fn not(self) -> Self

Returns the complement of this set of flags.

type Output = Layout

The resulting type after applying the ! operator.

impl Octal for Layout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Ord for Layout

fn cmp(&self, other: &Layout) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<Layout> for Layout

fn eq(&self, other: &Layout) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<Layout> for Layout

fn partial_cmp(&self, other: &Layout) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub<Layout> for Layout

fn sub(self, other: Self) -> Self

Returns the set difference of the two sets of flags.

type Output = Layout

The resulting type after applying the - operator.

impl SubAssign<Layout> for Layout

fn sub_assign(&mut self, other: Self)

Disables all flags enabled in the set.

impl UpperHex for Layout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for Layout

impl Eq for Layout

impl StructuralEq for Layout

impl StructuralPartialEq for Layout