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import { _ITable, _ISelection, _IIndex, _IDb, _ISchema, _Transaction, setId } from '../../interfaces-private.ts';import { Schema } from '../../interfaces.ts';import { Types } from '../../datatypes/index.ts';import { ReadOnlyTable } from '../readonly-table.ts';
// https://www.postgresql.org/docs/12/catalog-pg-class.html
const IS_SCHEMA = Symbol('_is_pg_database');export class PgDatabaseTable extends ReadOnlyTable implements _ITable {
    get ownSymbol() {        return IS_SCHEMA;    }

    _schema: Schema = {        name: 'pg_database',        fields: [            { name: 'oid', type: Types.integer } // hidden oid column            , { name: 'datname', type: Types.text() }            , { name: 'datdba', type: Types.integer }            , { name: 'encoding', type: Types.integer }            , { name: 'datcollate', type: Types.text() }            , { name: 'datctype', type: Types.text() }            , { name: 'datistemplate', type: Types.bool }            , { name: 'datlowconn', type: Types.bool }            , { name: 'datconlimit', type: Types.integer }            , { name: 'datlastsysoid', type: Types.integer }            , { name: 'datfrozenxid', type: Types.integer }            , { name: 'datminmxid', type: Types.integer }            , { name: 'dattablespace', type: Types.integer }            , { name: 'datacl', type: Types.jsonb }        ]    };
    entropy(t: _Transaction): number {        return this.db.listSchemas().length;    }
    *enumerate() {        // this is 💩, whaterver...        let i = 48593;        for (const t of this.db.listSchemas()) {            const ret = {                oid: ++i,                datname: t.name,                [IS_SCHEMA]: true,            };            yield setId(ret, '/schema/pg_database/' + t.name);        }    }

    hasItem(value: any): boolean {        return !!value?.[IS_SCHEMA];    }}