Module static_filter 

Static filter construction for zero-allocation filters.

This module provides zero-cost filter construction through:

• Static field name constants
• Type-level filter builders
• Compile-time filter macros

Performance

Static filters avoid heap allocations entirely:

• Field names are &'static str (no Cow overhead)
• Values are constructed inline
• Common patterns are pre-computed

Examples

use prax_query::static_filter::{StaticFilter, eq, gt, and2};
use prax_query::static_filter::fields;

// Zero-allocation filter construction
let filter = eq(fields::ID, 42);
let filter = gt(fields::AGE, 18);

// Combine two filters (optimized path)
let filter = and2(
    eq(fields::ACTIVE, true),
    gt(fields::SCORE, 100),
);

Modules

fields

Common field name constants for zero-allocation filters.

Structs

StaticFilter

A static filter with compile-time known field name.

Enums

CompactValue

A compact filter value optimized for common cases.

Functions

and2

Combine exactly 2 filters with AND (optimized, avoids vec allocation overhead).

and3

Combine exactly 3 filters with AND.

and4

Combine exactly 4 filters with AND.

and5

Combine exactly 5 filters with AND.

contains

Create a LIKE %value% filter with static field name.

ends_with

Create a LIKE %value filter with static field name.

eq

Create an equality filter with static field name.

gt

Create a greater-than filter with static field name.

gte

Create a greater-than-or-equal filter with static field name.

in_list

Create an IN filter with static field name.

is_not_null

Create an IS NOT NULL filter with static field name.

is_null

Create an IS NULL filter with static field name.

lt

Create a less-than filter with static field name.

lte

Create a less-than-or-equal filter with static field name.

ne

Create a not-equals filter with static field name.

not

Negate a filter.

not_in_list

Create a NOT IN filter with static field name.

or2

Combine exactly 2 filters with OR (optimized, avoids vec allocation overhead).

or3

Combine exactly 3 filters with OR.

or4

Combine exactly 4 filters with OR.

or5

Combine exactly 5 filters with OR.

starts_with

Create a LIKE value% filter with static field name.