Enum CompactFilter 

pub enum CompactFilter {
    EqInt {
        field: Arc<str>,
        value: i64,
    },
    EqBool {
        field: Arc<str>,
        value: bool,
    },
    EqStr {
        field: Arc<str>,
        value: Arc<str>,
    },
    IsNull {
        field: Arc<str>,
    },
    IsNotNull {
        field: Arc<str>,
    },
    GtInt {
        field: Arc<str>,
        value: i64,
    },
    LtInt {
        field: Arc<str>,
        value: i64,
    },
    And(Box<CompactFilter>, Box<CompactFilter>),
    Or(Box<CompactFilter>, Box<CompactFilter>),
}

A compact filter representation for simple equality filters.

Uses less memory than the full Filter enum for common cases:

• Equality on integer fields: 16 bytes vs ~40 bytes
• Equality on string fields with short values: ~32 bytes vs ~56 bytes

Variants

EqInt

Equality on integer field.

Fields

field: Arc<str>

Field name (interned).

value: i64

Integer value.

EqBool

Equality on boolean field.

Fields

field: Arc<str>

Field name (interned).

value: bool

Boolean value.

EqStr

Equality on string field.

Fields

field: Arc<str>

Field name (interned).

value: Arc<str>

String value.

IsNull

IS NULL check.

Fields

field: Arc<str>

Field name (interned).

IsNotNull

IS NOT NULL check.

Fields

field: Arc<str>

Field name (interned).

GtInt

Greater than on integer field.

Fields

field: Arc<str>

Field name (interned).

value: i64

Integer value.

LtInt

Less than on integer field.

Fields

field: Arc<str>

Field name (interned).

value: i64

Integer value.

And(Box<CompactFilter>, Box<CompactFilter>)

AND of two compact filters.

Or(Box<CompactFilter>, Box<CompactFilter>)

OR of two compact filters.

Implementations

impl CompactFilter

pub fn eq_int(field: impl Into<Arc<str>>, value: i64) -> Self

Create an equality filter on an integer field.

pub fn eq_bool(field: impl Into<Arc<str>>, value: bool) -> Self

Create an equality filter on a boolean field.

pub fn eq_str(field: impl Into<Arc<str>>, value: impl Into<Arc<str>>) -> Self

Create an equality filter on a string field.

pub fn is_null(field: impl Into<Arc<str>>) -> Self

Create an IS NULL filter.

pub fn is_not_null(field: impl Into<Arc<str>>) -> Self

Create an IS NOT NULL filter.

pub fn gt_int(field: impl Into<Arc<str>>, value: i64) -> Self

Create a greater-than filter on an integer field.

pub fn lt_int(field: impl Into<Arc<str>>, value: i64) -> Self

Create a less-than filter on an integer field.

pub fn and(self, other: Self) -> Self

Combine with another filter using AND.

pub fn or(self, other: Self) -> Self

Combine with another filter using OR.

pub fn to_sql_postgres(&self, param_offset: &mut usize) -> String

Convert to SQL condition string for PostgreSQL.

pub fn size_bytes(&self) -> usize

Get the approximate size in bytes.

Trait Implementations

impl Clone for CompactFilter

fn clone(&self) -> CompactFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompactFilter

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

Formats the value using the given formatter.

impl PartialEq for CompactFilter

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for CompactFilter