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

#[repr(transparent)]
pub struct Layout(_);

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.

impl Layout

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 fn from_bits_retain(bits: u32) -> Self

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

pub fn from_name(name: &str) -> Option<Self>

Get the value for a flag from its stringified name.

Names are case-sensitive, so must correspond exactly to the identifier given to the flag.

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.

This method is equivalent to union.

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

Removes the specified flags in-place.

This method is equivalent to difference.

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

Toggles the specified flags in-place.

This method is equivalent to symmetric_difference.

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.

Calculating self bitwise and (&) other, including any bits that don’t correspond to a defined flag.

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

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

Calculates self bitwise or (|) other, including any bits that don’t correspond to a defined flag.

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

Returns the difference between the flags in self and other.

Calculates self bitwise and (&!) the bitwise negation of other, including any bits that don’t correspond to a defined flag.

This method is not equivalent to a & !b when there are bits set that don’t correspond to a defined flag. The ! operator will unset any bits that don’t correspond to a flag, so they’ll always be unset by a &! b, but respected by a.difference(b).

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

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

Calculates self bitwise exclusive or (^) other, including any bits that don’t correspond to a defined flag.

pub const fn complement(self) -> Self

Returns the complement of this set of flags.

Calculates the bitwise negation (!) of self, unsetting any bits that don’t correspond to a defined flag.

impl Layout

pub const fn iter(&self) -> Iter<Layout>

Iterate over enabled flag values.

pub const fn iter_names(&self) -> IterNames<Layout>

Iterate over enabled flag values with their stringified names.

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 Flags for Layout

const FLAGS: &'static [Flag<Layout>] = _

The set of available flags and their names.

type Bits = u32

The underlying storage type.

fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

fn from_bits_retain(bits: u32) -> Layout

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

fn empty() -> Self

Returns an empty set of flags.

fn all() -> Self

Returns the set containing all flags.

fn from_bits(bits: Self::Bits) -> Option<Self>

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

fn from_bits_truncate(bits: Self::Bits) -> Self

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

fn from_name(name: &str) -> Option<Self>

Get the flag for a particular name.

fn iter(&self) -> Iter<Self>

Iterate over enabled flag values.

fn iter_names(&self) -> IterNames<Self>

Iterate over the raw names and bits for enabled flag values.

fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

fn is_all(&self) -> bool

Returns true if all flags are currently set.

fn intersects(&self, other: Self) -> boolwhere Self: Sized,

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

fn contains(&self, other: Self) -> boolwhere Self: Sized,

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

fn insert(&mut self, other: Self)where Self: Sized,

Inserts the specified flags in-place.

fn remove(&mut self, other: Self)where Self: Sized,

Removes the specified flags in-place.

fn toggle(&mut self, other: Self)where Self: Sized,

Toggles the specified flags in-place.

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

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

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

Returns the intersection between the flags in self and other.

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

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

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

Returns the difference between the flags in self and other.

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

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

fn complement(self) -> Self

Returns the complement of this set of flags.

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 IntoIterator for Layout

type Item = Layout

The type of the elements being iterated over.

type IntoIter = Iter<Layout>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

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 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 PublicFlags for Layout

type Primitive = u32

The type of the underlying storage.

type Internal = InternalBitFlags

The type of the internal field on the generated flags type.

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