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////////////////////////////////////////////////////////////////////////////
//
// Copyright 2016 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////
/**
* When opening a Realm created with Realm Mobile Platform v1.x, it is automatically
* migrated to the v2.x format. In case this migration
* is not possible, an exception is thrown. The exception´s `message` property will be equal
* to `IncompatibleSyncedRealmException`. The Realm is backed up, and the property `configuration`
* is a {Realm~Configuration} which refers to it. You can open it as a local, read-only Realm, and
* copy objects to a new synced Realm.
*
* @memberof Realm
*/
class Sync {
/**
* Add a sync listener to listen to changes across multiple Realms.
*
* @param {string} serverUrl - The sync server to listen to.
* @param {SyncUser} adminUser - An admin user obtained by calling `new Realm.Sync.User.adminUser`.
* @param {string} filterRegex - A regular expression used to determine which changed Realms should trigger events. Use `.*` to match all Realms.
* @param {string} name - The name of the event.
* @param {function(changeEvent)} changeCallback - The callback to invoke with the events.
*
* Registers the `changeCallback` to be called each time the given event occurs on the specified server.
* Only events on Realms with a _virtual path_ that matches the filter regex are emitted.
*
* Currently supported events:
*
* * `'available'`: Emitted whenever there is a new Realm which has a virtual
* path matching the filter regex, either due to the Realm being newly created
* or the listener being added. The virtual path (i.e. the portion of the
* URL after the protocol and hostname) is passed as an argument.
* * `'change'`: Emitted whenever the data within a Realm matching the filter
* regex has changed. A [ChangeEvent]{@link Realm.Sync.ChangeEvent} argument
* is passed containing information about which Realm changed and what
* objects within the Realm changed.
* * `'delete'`: Emitted whenever a Realm matching the filter regex has been
* deleted from the server. The virtual path of the Realm being deleted is
* passed as an argument.
*
* Only available in the Enterprise Edition.
*/
static addListener(serverUrl, adminUser, filterRegex, name, changeCallback) {}
/**
* Add a sync listener to listen to changes across multiple Realms.
*
* @param {string} serverUrl - The sync server to listen to.
* @param {SyncUser} adminUser - An admin user obtained by calling `new Realm.Sync.User.adminUser`.
* @param {string} filterRegex - A regular expression used to determine which changed Realms should trigger events. Use `.*` to match all Realms.
* @param {Realm.Worker} worker - Worker to deliver events to.
*
* Only available in the Enterprise Edition.
*/
static addListener(serverUrl, adminUser, filterRegex, worker) {}
/**
* Remove a previously registered sync listener.
*
* @param {string} filterRegex - The regular expression previously used to register the listener.
* @param {string} name - The event name.
* @param {function(changeEvent)} changeCallback - The previously registered callback to be removed.
*/
static removeListener(regex, name, changeCallback) {}
/**
* Remove a previously registered sync listener.
*
* @param {string} filterRegex - The regular expression previously used to register the listener.
* @param {string} worker - The worker registered as a listener.
* @return {Promise<void>} A promise which is resolved when the worker has finished shutting down.
*/
static removeListener(regex, worker) {}
/**
* Remove all previously registered listeners.
* @return {Promise<void>} A promise which is resolved when all workers (if any) have finished shutting down.
*/
static removeAllListeners(name) {}
/**
* Set the sync log level.
* @param {Realm.Sync~LogLevel} log_level - The new log level.
*/
static setLogLevel(log_level) {}
/**
* Initiate a client reset. The Realm must be closed prior to the reset.
*
* @param {string} [path] - The path to the Realm to reset.
* Throws error if reset is not possible.
* @example
* {
* const config = { sync: { user, url: 'realm://localhost:9080/~/myrealm' } };
* config.sync.error = (sender, error) => {
* if (error.name === 'ClientReset') {
* Realm.Sync.initiateClientReset(original_path);
* // copy required objects from Realm at error.config.path
* }
* }
* }
*/
static initiateClientReset(path) {}
}
/**
* Change information passed when receiving sync `'change'` events.
*
* A ChangeEvent object can only be used within the callback which it is
* supplied to, and cannot be stored for use later. If the callback returns a
* promise, the ChangeEvent will remain valid until that promise is resolved
* (and no further notifications for that same Realm will be made until it is
* resolved). The Realms supplied by the change event do not need to be
* explicitly closed.
*
* @memberof Realm.Sync
*/
class ChangeEvent {
/**
* The virtual path of the changed Realm. This is the portion of the URL of
* the synced Realm after the protocol and the host name.
* @type {string}
*/
get path() {}
/**
* The changed realm, with the changes applied.
* @type {Realm}
*/
get realm() {}
/**
* The modified Realm prior to any of the changes being applied. This can
* be used in combination with the change indices to read the old values of
* any objects which were modified.
*
* @type {Realm}
*/
get oldRealm() {}
/**
* The change indexes for all added, removed, and modified objects in the
* changed Realm. This object is a hashmap of object types to arrays of
* indexes for all changed objects:
*
* Note that deleting an object in Realm can cause other objects in the
* Realm to move, which will be reported as an insertion/deletion pair. For
* example, if there are ten objects in a Realm and the fifth is deleted,
* the change indices will be `{insertions: [4], deletions: [4, 9]}`.
*
* @example
* {
* MyObject: {
* insertions: [indexes...],
* deletions: [indexes...],
* modifications: [indexes...]
* },
* MyOtherObject:
* ...
* }
*
* @type {object}
*/
get changes() {}
}
/**
* @typedef Realm.Sync~LogLevel
* @type {("error"|"info"|"debug")}
*/
/**
* Class that describes authentication errors in the Realm Object Server
* @memberof Realm.Sync
*/
class AuthError extends Error {
/**
* The numerical code for this error.
* @type {number}
*/
get code() {}
/**
* The unique help URI that describes this error.
* @type {string}
*/
get type() {}
}
/**
* Describes an error when an incompatible synced Realm is opened. The old version of the Realm can be accessed in readonly mode using the configuration() member
* @memberof Realm.Sync
*/
class IncompatibleSyncedRealmError {
/**
* The name of the error is 'IncompatibleSyncedRealmError'
*/
get name() {}
/**
* The {Realm~Configuration} of the backed up Realm.
* @type {Realm~Configuration}
*/
get configuration() {}
}
/**
* Class for logging in and managing Sync users.
* @memberof Realm.Sync
*/
class User {
/**
* Login a sync user with username and password.
* @param {string} server - authentication server
* @param {string} username
* @param {string} password
* @param {function(error, user)} [callback] - called with the following arguments:
* - `error` - an Error object is provided on failure
* - `user` - a valid User object on success
* @returns {void|Promise<User>} Returns a promise with a user if the callback was not specified
*/
static login(server, username, password, callback) {}
/**
* Authenticate a sync user with provider.
* @param {string} server - authentication server
* @param {string} provider - the provider (curently: 'password', and 'jwt')
* @param {object} options - options used by provider:
* - jwt - `token`; a JWT token
* - password - `username` and `password`
* @return {Promise<User>} Returns a promise with a user
*/
static authenticate(server, provider, options) {}
/**
* Register/login a sync user using an external login provider.
* @param {string} server - authentication server
* @param {object} options - options, containing the following:
* @param {string} options.provider - The provider type
* @param {string} options.providerToken - The access token for the given provider
* @param {object} [options.userInfo] - A map containing additional data required by the provider
* @param {function(error, User)} [callback] - an optional callback called with the following arguments:
* - `error` - an Error object is provided on failure
* - `user` - a valid User object on success
* @return {void|Promise<User>} Returns a promise with a user if the callback was not specified
*/
static registerWithProvider(server, options, callback) {}
/**
* Register a sync user with username and password.
* @param {string} server - authentication server
* @param {string} username
* @param {string} password
* @param {function(error, user)} [callback] - called with the following arguments:
* - `error` - an Error object is provided on failure
* - `user` - a valid User object on success
* @return {void|Promise<User>} Returns a promise with a user if the callback was not specified
*/
static register(server, username, password, callback) {}
/**
* Request a password reset email to be sent to a user's email.
* This will not throw an exception, even if the email doesn't belong to a Realm Object Server user.
*
* This can only be used for users who authenticated with the 'password' provider, and passed a valid email address as a username.
*
* @param {string} server - authentication server
* @param {string} email - The email that corresponds to the user's username.
* @return {Promise<void>} A promise which is resolved when the request has been sent.
*/
static requestPasswordReset(server, email) {}
/**
* Complete the password reset flow by using the reset token sent to the user's email as a one-time authorization token to change the password.
*
* By default, Realm Object Server will send a link to the user's email that will redirect to a webpage where they can enter their new password.
* If you wish to provide a native UX, you may wish to modify the password authentication provider to use a custom URL with deep linking, so you can
* open the app, extract the token, and navigate to a view that allows to change the password within the app.
*
* @param {string} server - authentication server
* @param {string} reset_token - The token that was sent to the user's email address.
* @param {string} new_password - The user's new password.
* @return {Promise<void>} A promise which is resolved when the request has been sent.
*/
static completePasswordReset(server, reset_token, new_password) {}
/**
* Request an email confirmation email to be sent to a user's email.
* This will not throw an exception, even if the email doesn't belong to a Realm Object Server user.
*
* @param {string} server - authentication server
* @param {string} email - The email that corresponds to the user's username.
* @return {Promise<void>} A promise which is resolved when the request has been sent.
*/
static requestEmailConfirmation(server, email) {}
/**
* Complete the email confirmation flow by using the confirmation token sent to the user's email as a one-time authorization token to confirm their email.
*
* By default, Realm Object Server will send a link to the user's email that will redirect to a webpage where they can enter their new password.
* If you wish to provide a native UX, you may wish to modify the password authentication provider to use a custom URL with deep linking, so you can
* open the app, extract the token, and navigate to a view that allows to confirm the email within the app.
*
* @param {string} server - authentication server
* @param {string} confirmation_token - The token that was sent to the user's email address.
* @return {Promise<void>} A promise which is resolved when the request has been sent.
*/
static confirmEmail(server, confirmation_token) {}
/**
* Create an admin user for the given authentication server with an existing token
* @param {string} adminToken - existing admin token
* @param {string} server - authentication server
* @return {User} - admin user populated with the given token and server
*/
static adminUser(adminToken, server) {}
/**
* A dictionary containing users that are currently logged in.
* The keys in the dictionary are user identities, values are corresponding User objects.
* @type {object}
*/
static get all() {}
/**
* Get the currently logged in user.
* Throws error if > 1 user logged in, returns undefined if no users logged in.
* @type {User}
*/
static get current() {}
/**
* Gets the server URL that was used for authentication.
* @type {string}
*/
get server() {}
/**
* Gets the identity of this user on the Realm Object Server.
* The identity is a guaranteed to be unique among all users on the Realm Object Server.
* @type {string}
*/
get identity() {}
/**
* Gets this user's refresh token. This is the user's credential for accessing the Realm
* Object Server and should be treated as sensitive data.
* @type {string}
*/
get token() {}
/**
* Returns true if this user is an administrator.
* @type {bool}
*/
get isAdmin() {}
/**
* Returns true if the token is an administrator token.
*/
get isAdminToken() {}
/**
* Logs out the user from the Realm Object Server.
*/
logout() {}
/**
* Get the management realm for this User.
* This Realm can be used to control access and permissions for Realms owned by the user.
* This includes giving others access to the Realms.
* @returns {Realm}
*/
openManagementRealm() {}
/**
* Get account information for a user. (requires administrator privilidges)
* @param {string} provider - the provider to query for user account information (ex. 'password')
* @param {string} username - the target username which account information should be retrieved
* @returns {Promise} - a promise that will be resolved with the retrieved account information as json object
* @example
* {
* "provider_id": "user@email.co",
* "provider": "password",
* "user": {
* "id": "06ac9a0a-a96a-4ee1-b53c-b05a7542035a",
* "isAdmin": true,
* }
* }
*/
retrieveAccount(provider, username) {}
/**
* Asynchronously retrieves all permissions associated with the user calling this method.
* @param {string} recipient the optional recipient of the permission. Can be either
* 'any' which is the default, or 'currentUser' or 'otherUser' if you want only permissions
* belonging to the user or *not* belonging to the user.
* @returns {Promise} a Promise with a queryable collection of permission objects that provides detailed
* information regarding the granted access.
* The collection is a live query similar to what you would get by callig Realm.objects,
* so the same features apply - you can listen for notifications or filter it.
*/
getGrantedPermissions(recipient) { }
/**
* Changes the permissions of a Realm.
* @param {object} condition - A condition that will be used to match existing users against.
* This should be an object, containing either the key 'userId', or 'metadataKey' and 'metadataValue'.
* @param {string} realmUrl - The path to the Realm that you want to apply permissions to.
* @param {string} accessLevel - The access level you want to set: 'none', 'read', 'write' or 'admin'.
* @returns {Promise} a Promise that, upon completion, indicates that the permissions have been
* successfully applied by the server. It will be resolved with the
* {@link PermissionChange PermissionChange} object that refers to the applied permission.
*/
applyPermissions(condition, realmUrl, accessLevel) { }
/**
* Generates a token that can be used for sharing a Realm.
* @param {string} realmUrl - The Realm URL whose permissions settings should be changed. Use * to change
* the permissions of all Realms managed by this user.
* @param {string} accessLevel - The access level to grant matching users. Note that the access level
* setting is additive, i.e. you cannot revoke permissions for users who previously had a higher access level.
* Can be 'read', 'write' or 'admin'.
* @param {Date} [expiresAt] - Optional expiration date of the offer. If set to null, the offer doesn't expire.
* @returns {string} - A token that can be shared with another user, e.g. via email or message and then consumed by
* User.acceptPermissionOffer to obtain permissions to a Realm.
*/
offerPermissions(realmUrl, accessLevel, expiresAt) { }
/**
* Consumes a token generated by {@link Realm#Sync#User#offerPermissions offerPermissions} to obtain permissions to a shared Realm.
* @param {string} token - The token, generated by User.offerPermissions
* @returns {string} The url of the Realm that the token has granted permissions to.
*/
acceptPermissionOffer(token) { }
/**
* Invalidates a permission offer.
* Invalidating an offer prevents new users from consuming its token. It doesn't revoke any permissions that have
* already been granted.
* @param {string|PermissionOffer} permissionOfferOrToken - Either the token or the entire
* {@link PermissionOffer PermissionOffer} object that was generated with
* {@link Realm#Sync#User#offerPermissions offerPermissions}.
*/
invalidatePermissionOffer(permissionOfferOrToken) { }
}
/**
* An object encapsulating a Realm Object Server session. Sessions represent the communication between the
* client (and a local Realm file on disk), and the server (and a remote Realm at a given URL stored on a Realm Object Server).
* Sessions are always created by the SDK and vended out through various APIs. The lifespans of sessions
* associated with Realms are managed automatically.
* @memberof Realm.Sync
*/
class Session {
/**
* Gets the Sync-part of the configuration that the corresponding Realm was
* constructed with.
* @type {object}
*/
get config() {}
/**
* Gets the User that this session was created with.
* @type {User}
*/
get user() {}
/**
* Gets the URL of the Realm Object Server that this session is connected to.
* @type {string}
*/
get url() {}
/**
* Gets the current state of the session.
* Can be either:
* - "active": The session is connected to the Realm Object Server and is actively transferring data.
* - "inactive": The session is not currently communicating with the Realm Object Server.
* - "invalid": A non-recoverable error has occurred, and this session is semantically invalid. A new session should be created.
* @type {string}
*/
get state() {}
/**
* Register a progress notification callback on a session object
* @param {string} direction - The progress direction to register for.
* Can be either:
* - `download` - report download progress
* - `upload` - report upload progress
* @param {string} mode - The progress notification mode to use for the registration.
* Can be either:
* - `reportIndefinitely` - the registration will stay active until the callback is unregistered
* - `forCurrentlyOutstandingWork` - the registration will be active until only the currently transferable bytes are synced
* @param {callback(transferred, transferable)} callback - called with the following arguments:
* - `transferred` - the current number of bytes already transferred
* - `transferable` - the total number of transferable bytes (the number of bytes already transferred plus the number of bytes pending transfer)
*/
addProgressNotification(direction, mode, progressCallback) {}
/** Unregister a progress notification callback that was previously registered with addProgressNotification.
* Calling the function multiple times with the same callback is ignored.
* @param {callback(transferred, transferable)} callback - a previously registered progress callback
*/
removeProgressNotification(progressCallback) {}
}
/**
* An object encapsulating partial sync subscriptions.
* @memberof Realm.Sync
*/
class Subscription {
/**
* Gets the current state of the subscription.
* Can be either:
* - Realm.Sync.SubscriptionState.Error: An error occurred while creating or processing the partial sync subscription.
* - Realm.Sync.SubscriptionState.Creating: The subscription is being created.
* - Realm.Sync.SubscriptionState.Pending: The subscription was created, but has not yet been processed by the sync server.
* - Realm.Sync.SubscriptionState.Complete: The subscription has been processed by the sync server and data is being synced to the device.
* - Realm.Sync.SubscriptionState.Invalidated: The subscription has been removed.
* @type {number}
*/
get state() {}
/**
* Gets the error message. `undefined` if no error.
* @type {string}
*/
get error() {}
/**
* Unsubscribe a partial synced `Realm.Results`. The state will change to `Realm.Sync.SubscriptionState.Invalidated`.
* The `Realm.Results` will not produce any meaningful values. Moreover, any objects matching the query will be
* removed if they are not matched by any other query. The object removal is done asynchronously.
*/
unsubscribe() {}
/**
* Adds a listener `callback` which will be called when the state of the subscription changes.
* @param {function(subscription, state)} callback - A function to be called when changes to the subscription occur.
* @throws {Error} If `callback` is not a function.
* @example
* let subscription = results.subscribe();
* subscription.addListener((subscription, state) => {
* switch (state) {
* case Realm.Sync.SubscriptionState.Complete:
* // results is ready to be consumed
* break;
* case Realm.Sync.SubscriptionState.Error:
* console.log('An error occurred: ', subscription.error);
* break;
* }
* }
*/
addListener(callback) {}
/**
* Remove the listener `callback` from the subscription instance.
* @param {function(subscription, state)} callback - Callback function that was previously
* added as a listener through the {@link Subscription#addListener addListener} method.
* @throws {Error} If `callback` is not a function.
*/
removeListener(callback) {}
/**
* Remove all listeners from the subscription instance.
*/
removeAllListeners() {}
}
/**
* A Realm Worker can be used to process Sync events in multiple automatically-managed child processes.
*
* Similar to Web Workers, a Worker is initialized by passing it the name of a module which should be loaded in the new process.
* The module should export a function for each even type it wishes to handle, which will be called when that event is emitted.
*
* Currently supported events:
*
* * `'available'`: Emitted whenever there is a new Realm which has a virtual
* path matching the filter regex, either due to the Realm being newly created
* or the listener being added. The virtual path (i.e. the portion of the
* URL after the protocol and hostname) is passed as an argument.
* * `'change'`: Emitted whenever the data within a Realm matching the filter
* regex has changed. A [ChangeEvent]{@link Realm.Sync.ChangeEvent} argument
* is passed containing information about which Realm changed and what
* objects within the Realm changed.
* * `'delete'`: Emitted whenever a Realm matching the filter regex has been
* deleted from the server. The virtual path of the Realm being deleted is
* passed as an argument.
*
* Worker automatically spawns child processes as needed to handle events in
* parallel (up to the limit specified in the `options` parameter). Events for
* each specific Realm will be processes in serial in the order in which the
* events occurred, but may not all be processed in the same child.
*
* @example
* // my-worker.js
* function onchange(path) {
* console.log(`Realm created at ${path}`);
* }
*
* function onavailable(change) {
* console.log(`Realm at ${change.path} changed`);
* }
*
* function ondelete(path) {
* console.log(`Realm at ${path} deleted`);
* }
*
* module.exports = {onchange, oncavailable, ondelete};
*
* // server script
* Realm.Sync.addListener(realmServerURL, adminUser, '.*', new Realm.Worker('my-worker'));
*
* @memberof Realm
*/
class Worker {
/**
* Create a new Worker which executes the given module.
*
* @param {string} moduleName - The module to load in the worker process.
* @param {object} [options] - An object containing option properties to configure the worker.
* Available properties are as follows:
*
* * `maxWorkers`: The maximum number of child processes to spawn. Defaults to `os.cpus().length`.
* * `env`: An object containing environment variables to set for the child process.
* * `execArgv`: Command-line arguments to pass to the `node` worker processes.
*/
constructor(moduleName, options = {}) {}
}
/**
* Class for creating custom Data Connectors. Only available in the Enterprise Edition.
* @memberof Realm.Sync
*/
class Adapter {
/**
* Create a new Adapter to monitor and process changes made across multiple Realms
* @param {string} localPath - the local path where realm files are stored
* @param {string} serverUrl - the sync server to listen to
* @param {SyncUser} adminUser - an admin user obtained by calling `new Realm.Sync.User.adminUser`
* @param {string} regex - a regular expression used to determine which changed Realms should be monitored -
* use `.*` to match all all Realms
* @param {function(realmPath)} changeCallback - called when a new transaction is available
* to process for the given realm_path
*/
constructor(localPath, serverUrl, adminUser, regex, changeCallback) {}
/**
* Get the Array of current instructions for the given Realm.
* @param {string} path - the path for the Realm being monitored
* @returns {Array(instructions)} or {undefined} if all transactions have been processed
*/
current(path) {}
/**
* Advance the to the next transaction indicating that you are done processing the current
* instructions for the given Realm.
* @param {string} path - the path for the Realm to advance
*/
advance(path) {}
/**
* Open the Realm used by the Adapter for the given path. This is useful for writing two way
* adapters as transactions written to this realm will be ignored when calling `current` and `advance`
* @param {string} path - the path for the Realm to open
* @param {Realm~ObjectSchema[]} [optional] schema - schema to apply when opening the Realm
* @returns {Realm}
*/
realmAtPath(path, schema) {}
/**
* Close the adapter and all opened Realms.
*/
close() {}
}
/**
* The following Instructions can be returned by `Adapter.current(path)`. Each instruction object has
* a `type` property which is one of the following types. For each type below we list the other properties
* that will exist in the instruction object.
* @typedef Realm.Sync.Adapter~Instruction
* @type {(INSERT|SET|DELETE|CLEAR|CHANGE_IDENTITY|LIST_SET|LIST_INSERT|LIST_ERASE|LIST_CLEAR|ADD_TYPE|ADD_PROPERTY)}
* @property INSERT - insert a new object
* - `object_type` - type of the object being inserted
* - `identity` - primary key value or row index for the object
* - `values` - map of property names and property values for the object to insert
* @property SET - set property values for an existing object
* - `object_type` - type of the object
* - `identity` - primary key value or row index for the object
* - `values` - map of property names and property values to update for the object
* @property DELETE - delete an exising object
* - `object_type` - type of the object
* - `identity` - primary key value or row index for the object
* @property CLEAR - delete all objects of a given type
* - `object_type` - type of the object
* @property LIST_SET - set the object at a given list index to an object
* - `object_type` - type of the object
* - `identity` - primary key for the object
* - `property` - property name for the list property to mutate
* - `list_index` - list index to set
* - `object_identity` - primary key or row number of the object being set
* @property LIST_INSERT - insert an object in the list at the given index
* - `object_type` - type of the object
* - `identity` - primary key for the object
* - `property` - property name for the list property to mutate
* - `list_index` - list index at which to insert
* - `object_identity` - primary key or row number of the object to insert
* @property LIST_ERASE - erase an object in the list at the given index - this removes the object
* from the list but the object will still exist in the Realm
* - `object_type` - type of the object
* - `identity` - primary key for the object
* - `property` - property name for the list property to mutate
* - `list_index` - list index which should be erased
* @property LIST_CLEAR - clear a list removing all objects - objects are not deleted from the Realm
* - `object_type` - type of the object
* - `identity` - primary key for the object
* - `property` - property name for the list property to clear
* @property ADD_TYPE - add a new type
* - `object_type` - name of the type
* - `primary_key` - name of primary key property for this type
* - `properties` - Property map as described in {@link Realm~ObjectSchema}
* @property ADD_PROPERTIES - add properties to an existing type
* - `object_type` - name of the type
* - `properties` - Property map as described in {@link Realm~ObjectSchema}
* @property CHANGE_IDENTITY - change the row index for an existing object - not called for objects
* with primary keys
* - `object_type` - type fo the object
* - `identity` - old row value for the object
* - `new_identity` - new row value for the object
*/
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