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import { QueryError, Reg, _Explainer, _ISchema, _ISelection, _IView, _Transaction } from '../interfaces-private.ts';import { DataSourceBase, FilterBase } from '../transforms/transform-base.ts';
export class View extends FilterBase<any> implements _IView {    get type(): 'view' {        return 'view';    }
    private _reg?: Reg;    get reg(): Reg {        if (!this._reg) {            throw new QueryError(`relation "${this.name}" does not exist`);        }        return this._reg;    }
    constructor(readonly ownerSchema: _ISchema, readonly name: string, readonly selection: _ISelection) {        super(selection);    }

    enumerate(t: _Transaction): Iterable<any> {        return this.selection.enumerate(t);    }
    hasItem(value: any, t: _Transaction): boolean {        return this.selection.hasItem(value, t);    }
    explain(e: _Explainer) {        return this.selection.explain(e);    }
    stats(t: _Transaction) {        return this.selection.stats(t);    }

    register() {        // once fields registered,        //  then register the table        //  (column registrations need it not to be registered yet)        this._reg = this.ownerSchema._reg_register(this);        return this;    }
    drop(t: _Transaction): void {        throw new Error('Method not implemented.');    }}