query-api/me.ahoo.wow.api.query/FilterExpression

FilterExpression

sealed interface FilterExpression : RewritableFilter<FilterExpression>

A node of a filter tree. On the wire each node is a JSON object whose op is its operator's name, with the node's own properties beside it.

Numeric predicates compare the selected backend's stored or indexed representation, including its precision and quantization. Exact-match capability does not promise arbitrary-precision equality with a source value. Explicit string-comparison contracts remain independent of numeric representation.

Inheritors

Properties

operator

abstract val operator: FilterOperator

Functions

appendFilter

open override fun appendFilter(append: FilterExpression): FilterExpression

childFilters

fun FilterExpression.childFilters(): List<FilterExpression>

The direct child filters of this node: the operands of AND / OR / NOR and the predicate of ELEMENT_MATCH. Every other node is a leaf and returns an empty list. The one walker of a filter tree: consumers that visit the tree read the children from here instead of matching the logical nodes themselves.

withFilter

open override fun withFilter(newFilter: FilterExpression): FilterExpression