import {
  type RawQueryFragment,
  type Constructor,
  type EntityManager,
  type EntityRepository,
  type IDatabaseDriver,
  type IsolationLevel,
  type MikroORM,
  Platform,
} from '@mikro-orm/core';
import { SqlSchemaGenerator } from './schema/SqlSchemaGenerator.js';
import { type SchemaHelper } from './schema/SchemaHelper.js';
import type { IndexDef } from './typings.js';
import { NativeQueryBuilder } from './query/NativeQueryBuilder.js';
/** Base class for SQL database platforms, providing SQL generation and quoting utilities. */
export declare abstract class AbstractSqlPlatform extends Platform {
  #private;
  protected readonly schemaHelper?: SchemaHelper;
  usesPivotTable(): boolean;
  indexForeignKeys(): boolean;
  getRepositoryClass<T extends object>(): Constructor<EntityRepository<T>>;
  getSchemaHelper(): SchemaHelper | undefined;
  /** @inheritDoc */
  lookupExtensions(orm: MikroORM): void;
  getSchemaGenerator(driver: IDatabaseDriver, em?: EntityManager): SqlSchemaGenerator;
  /** @internal */
  createNativeQueryBuilder(): NativeQueryBuilder;
  getBeginTransactionSQL(options?: { isolationLevel?: IsolationLevel; readOnly?: boolean }): string[];
  getCommitTransactionSQL(): string;
  getRollbackTransactionSQL(): string;
  getSavepointSQL(savepointName: string): string;
  getRollbackToSavepointSQL(savepointName: string): string;
  getReleaseSavepointSQL(savepointName: string): string;
  quoteValue(value: any): string;
  getSearchJsonPropertySQL(path: string, type: string, aliased: boolean): string | RawQueryFragment;
  getSearchJsonPropertyKey(path: string[], type: string, aliased: boolean, value?: unknown): string | RawQueryFragment;
  /**
   * Quotes a key for use inside a JSON path expression (e.g. `$.key`).
   * Simple alphanumeric keys are left unquoted; others are wrapped in double quotes.
   * @internal
   */
  quoteJsonKey(key: string): string;
  getJsonIndexDefinition(index: IndexDef): string[];
  supportsUnionWhere(): boolean;
  supportsSchemas(): boolean;
  /** @inheritDoc */
  generateCustomOrder(escapedColumn: string, values: unknown[]): string;
  /**
   * @internal
   */
  getOrderByExpression(column: string, direction: string, collation?: string): string[];
  /**
   * Quotes a collation name for use in COLLATE clauses.
   * @internal
   */
  quoteCollation(collation: string): string;
  /** @internal */
  protected validateCollationName(collation: string): void;
  /** @internal */
  validateJsonPropertyName(name: string): void;
  /**
   * Returns FROM clause for JSON array iteration.
   * @internal
   */
  getJsonArrayFromSQL(
    column: string,
    alias: string,
    _properties: {
      name: string;
      type: string;
    }[],
  ): string;
  /**
   * Returns SQL expression to access an element's property within a JSON array iteration.
   * @internal
   */
  getJsonArrayElementPropertySQL(alias: string, property: string, _type: string): string;
  /**
   * Wraps JSON array FROM clause and WHERE condition into a full EXISTS condition.
   * MySQL overrides this because `json_table` doesn't support correlated subqueries.
   * @internal
   */
  getJsonArrayExistsSQL(from: string, where: string): string;
  /**
   * Maps a runtime type name (e.g. 'string', 'number') to a driver-specific bind type constant.
   * Used by NativeQueryBuilder for output bindings.
   * @internal
   */
  mapToBindType(type: string): unknown;
}