/** @packageDocumentation
 * @module Locaters
 */
import { ISchemaLocater, Schema, SchemaContext, SchemaInfo, SchemaKey, SchemaMatchType } from "@itwin/ecschema-metadata";
import { SchemaFileLocater } from "./SchemaFileLocater";
/**
 * A SchemaLocater implementation for locating XML Schema files
 * from the file system using configurable search paths.
 * @public @preview This is a workaround the current lack of a full xml parser.
 */
export declare class SchemaXmlFileLocater extends SchemaFileLocater implements ISchemaLocater {
    /**
     * Attempts to retrieve a Schema with the given SchemaKey by using the configured search paths
     * to locate the XML Schema file from the file system.
     * @param key The SchemaKey of the Schema to retrieve.
     * @param matchType The SchemaMatchType.
     * @param context The SchemaContext that will control the lifetime of the schema.
     */
    getSchema(key: SchemaKey, matchType: SchemaMatchType, context: SchemaContext): Promise<Schema | undefined>;
    /**
      * Gets the schema info which matches the provided SchemaKey.  The schema info may be returned before the schema is fully loaded.
      * The fully loaded schema can be gotten later from the context using the getCachedSchema method.
      * @param schemaKey The SchemaKey describing the schema to get from the cache.
      * @param matchType The match type to use when locating the schema
      * @param context The SchemaContext that will control the lifetime of the schema and holds the schema's references, if they exist.
      */
    getSchemaInfo(schemaKey: SchemaKey, matchType: SchemaMatchType, context: SchemaContext): Promise<SchemaInfo | undefined>;
    /**
     * Attempts to retrieve a Schema with the given SchemaKey by using the configured search paths
     * to locate the XML Schema file from the file system.
     * @param key The SchemaKey of the Schema to retrieve.
     * @param matchType The SchemaMatchType.
     * @param context The SchemaContext that will control the lifetime of the schema.
     */
    getSchemaSync(key: SchemaKey, matchType: SchemaMatchType, context: SchemaContext): Schema | undefined;
    /**
     * Constructs a SchemaKey based on the information in the Schema XML.
     * @param data The Schema XML as a string.
     */
    getSchemaKey(data: string): SchemaKey;
}
/**
 * This locater is responsible for locating standard schema files that are released by the core-backend package.
 * The locater needs an argument to the known backend assets directory where the core-backend package is installed.
 * This can be accessed by the KnownLocations.nativeAssetsDir getter provided by core-backend.
 *
 * @note This locater is read-only and does not allow adding new schema search paths.
 * @note This locater should be used as a fallback/last chance locater in the schema context as any user defined schema should have higher precedence over the standard schema.
 * @see [Loading ECSchemas from XML Files]($docs/learning/schema-xml-file-locaters.md) for usage guidance.
 * @public @preview This is a workaround due to the current lack of a full xml parser.
 */
export declare class PublishedSchemaXmlFileLocater extends SchemaXmlFileLocater implements ISchemaLocater {
    /**
     * Constructs a new PublishedSchemaXmlFileLocater
     * @param knownBackendAssetsDir The assets directory where the core-backend package is installed. Can be accessed by the KnownLocations.nativeAssetsDir getter provided by core-backend.
     */
    constructor(knownBackendAssetsDir: string);
    /**
     * Overrides the addSchemaSearchPath method to prevent adding new schema search paths.
     *
     * @param _schemaPath - The schema path to add (ignored).
     */
    addSchemaSearchPath(_schemaPath: string): void;
    /**
     * Overrides the addSchemaSearchPaths method to prevent adding new schema search paths.
     *
     * @param _schemaPaths - The schema paths to add (ignored).
     */
    addSchemaSearchPaths(_schemaPaths: string[]): void;
}
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