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import { _ISelection, IValue, _IIndex, _ITable, _Transaction, _Explainer, _SelectExplanation, IndexOp, Stats } from '../interfaces-private.ts';import { FilterBase } from './transform-base.ts';import { nullIsh } from '../utils.ts';
export class IneqFilter<T = any> extends FilterBase<T> {
    private index: _IIndex;    private opDef: IndexOp;
    entropy(t: _Transaction) {        return this.onValue.index!.entropy({ ...this.opDef, t });    }
    hasItem(item: T, t: _Transaction) {        const val = this.onValue.get(item, t);        if (nullIsh(val)) {            return false;        }        return !!this.onValue.type[this.op](val, this.than);    }
    constructor(private onValue: IValue<T>        , private op: 'gt' | 'ge' | 'lt' | 'le'        , private than: any) {        super(onValue.origin!);
        this.index = this.onValue.index!;        this.opDef = {            type: op,            key: [than],            t: null as any,        }    }

    stats(t: _Transaction): Stats | null {        return null;    }
    *enumerate(t: _Transaction): Iterable<T> {        for (const item of this.index.enumerate({ ...this.opDef, t })) {            if (!this.hasItem(item, t)) {                break;            }            yield item;        }    }

    explain(e: _Explainer): _SelectExplanation {        return {            id: e.idFor(this),            _: 'ineq',            entropy: this.entropy(e.transaction),            on: this.onValue.index!.explain(e),        };    }}