456 lines
21 KiB
JavaScript
456 lines
21 KiB
JavaScript
////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2016 Realm Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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////////////////////////////////////////////////////////////////////////////
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/**
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* A Realm instance represents a Realm database.
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* ```js
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* const Realm = require('realm');
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* ```
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*/
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class Realm {
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/**
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* Indicates if this Realm contains any objects.
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* @type {boolean}
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* @readonly
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* @since 1.10.0
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*/
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get empty() {}
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/**
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* The path to the file where this Realm is stored.
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* @type {string}
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* @readonly
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* @since 0.12.0
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*/
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get path() {}
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/**
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* Indicates if this Realm was opened as read-only.
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* @type {boolean}
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* @readonly
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* @since 0.12.0
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*/
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get readOnly() {}
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/**
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* A normalized representation of the schema provided in the
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* {@link Realm~Configuration Configuration} when this Realm was constructed.
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* @type {Realm~ObjectSchema[]}
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* @readonly
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* @since 0.12.0
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*/
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get schema() {}
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/**
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* The current schema version of this Realm.
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* @type {number}
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* @readonly
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* @since 0.12.0
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*/
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get schemaVersion() {}
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/**
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* Indicates if this Realm is in a write transaction.
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* @type {boolean}
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* @readonly
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* @since 1.10.3
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*/
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get isInTransaction() {}
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/**
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* Gets the sync session if this is a synced Realm
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* @type {Session}
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*/
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get syncSession() {}
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/**
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* Create a new `Realm` instance using the provided `config`. If a Realm does not yet exist
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* at `config.path` (or {@link Realm.defaultPath} if not provided), then this constructor
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* will create it with the provided `config.schema` (which is _required_ in this case).
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* Otherwise, the instance will access the existing Realm from the file at that path.
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* In this case, `config.schema` is _optional_ or not have changed, unless
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* `config.schemaVersion` is incremented, in which case the Realm will be automatically
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* migrated to use the new schema.
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* @param {Realm~Configuration} [config] - **Required** when first creating the Realm.
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* @throws {Error} If anything in the provided `config` is invalid.
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* @throws {IncompatibleSyncedRealmError} when an incompatible synced Realm is opened
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*/
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constructor(config) {}
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/**
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* Open a Realm asynchronously with a promise. If the Realm is synced, it will be fully
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* synchronized before it is available.
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* @param {Realm~Configuration} config
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* @returns {ProgressPromise} - a promise that will be resolved with the Realm instance when it's available.
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*/
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static open(config) {}
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/**
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* Open a Realm asynchronously with a callback. If the Realm is synced, it will be fully
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* synchronized before it is available.
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* @param {Realm~Configuration} config
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* @param {callback(error, realm)} - will be called when the Realm is ready.
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* @param {callback(transferred, transferable)} [progressCallback] - an optional callback for download progress notifications
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* @throws {Error} If anything in the provided `config` is invalid
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* @throws {IncompatibleSyncedRealmError} when an incompatible synced Realm is opened
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*/
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static openAsync(config, callback, progressCallback) {}
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/**
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* Closes this Realm so it may be re-opened with a newer schema version.
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* All objects and collections from this Realm are no longer valid after calling this method.
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*/
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close() {}
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/**
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* Create a new Realm object of the given type and with the specified properties.
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* @param {Realm~ObjectType} type - The type of Realm object to create.
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* @param {Object} properties - Property values for all required properties without a
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* default value.
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* @param {boolean} [update=false] - Signals that an existing object with matching primary key
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* should be updated. Only the primary key property and properties which should be updated
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* need to be specified. All missing property values will remain unchanged.
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* @returns {Realm.Object}
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*/
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create(type, properties, update) {}
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/**
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* Deletes the provided Realm object, or each one inside the provided collection.
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* @param {Realm.Object|Realm.Object[]|Realm.List|Realm.Results} object
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*/
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delete(object) {}
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/**
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* Deletes a Realm model, including all of its objects.
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* @param {string} name - the model name
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*/
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deleteModel(name) {}
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/**
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* **WARNING:** This will delete **all** objects in the Realm!
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*/
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deleteAll() {}
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/**
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* Returns all objects of the given `type` in the Realm.
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* @param {Realm~ObjectType} type - The type of Realm objects to retrieve.
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* @throws {Error} If type passed into this method is invalid.
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* @returns {Realm.Results} that will live-update as objects are created and destroyed.
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*/
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objects(type) {}
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/**
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* Searches for a Realm object by its primary key.
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* @param {Realm~ObjectType} type - The type of Realm object to search for.
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* @param {number|string} key - The primary key value of the object to search for.
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* @throws {Error} If type passed into this method is invalid or if the object type did
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* not have a `primaryKey` specified in its {@link Realm~ObjectSchema ObjectSchema}.
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* @returns {Realm.Object|undefined} if no object is found.
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* @since 0.14.0
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*/
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objectForPrimaryKey(type, key) {}
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/**
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* Add a listener `callback` for the specified event `name`.
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* @param {string} name - The name of event that should cause the callback to be called.
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* _Currently, only the "change" event supported_.
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* @param {callback(Realm, string)} callback - Function to be called when the event occurs.
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* Each callback will only be called once per event, regardless of the number of times
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* it was added.
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* @throws {Error} If an invalid event `name` is supplied, or if `callback` is not a function.
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*/
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addListener(name, callback) {}
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/**
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* Remove the listener `callback` for the specfied event `name`.
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* @param {string} name - The event name.
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* _Currently, only the "change" event supported_.
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* @param {callback(Realm, string)} callback - Function that was previously added as a
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* listener for this event through the {@link Realm#addListener addListener} method.
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* @throws {Error} If an invalid event `name` is supplied, or if `callback` is not a function.
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*/
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removeListener(name, callback) {}
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/**
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* Remove all event listeners (restricted to the event `name`, if provided).
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* @param {string} [name] - The name of the event whose listeners should be removed.
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* _Currently, only the "change" event supported_.
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* @throws {Error} When invalid event `name` is supplied
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*/
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removeAllListeners(name) {}
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/**
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* Synchronously call the provided `callback` inside a write transaction.
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* @param {function()} callback
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*/
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write(callback) {}
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/**
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* Initiate a write transaction.
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* @throws {Error} When already in write transaction
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*/
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beginTransaction() {}
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/**
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* Commit a write transaction.
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*/
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commitTransaction() {}
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/**
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* Cancel a write transaction.
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*/
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cancelTransaction() {}
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/**
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* Replaces all string columns in this Realm with a string enumeration column and compacts the
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* database file.
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*
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* Cannot be called from a write transaction.
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*
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* Compaction will not occur if other `Realm` instances exist.
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*
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* While compaction is in progress, attempts by other threads or processes to open the database will
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* wait.
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*
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* Be warned that resource requirements for compaction is proportional to the amount of live data in
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* the database. Compaction works by writing the database contents to a temporary database file and
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* then replacing the database with the temporary one.
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* @returns {true} if compaction succeeds.
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*/
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compact() {}
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/**
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* If the Realm is a partially synchronized Realm, fetch and synchronize the objects
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* of a given object type that match the given query (in string format).
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*
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* **Partial synchronization is a tech preview. Its APIs are subject to change.**
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* @param {Realm~ObjectType} type - The type of Realm objects to retrieve.
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* @param {string} query - Query used to filter objects.
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* @return {Promise} - a promise that will be resolved with the Realm.Results instance when it's available.
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*/
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subscribeToObjects(className, query, callback) {}
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}
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/**
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* Get the current schema version of the Realm at the given path.
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* @param {string} path - The path to the file where the
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* Realm database is stored.
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* @param {ArrayBuffer|ArrayBufferView} [encryptionKey] - Required only when
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* accessing encrypted Realms.
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* @throws {Error} When passing an invalid or non-matching encryption key.
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* @returns {number} version of the schema, or `-1` if no Realm exists at `path`.
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*/
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Realm.schemaVersion = function(path, encryptionKey) {};
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/**
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* Delete the Realm file for the given configuration.
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* @param {Realm~Configuration} config
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* @throws {Error} If anything in the provided `config` is invalid.
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*/
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Realm.deleteFile = function(config) {};
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/**
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* The default path where to create and access the Realm file.
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* @type {string}
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*/
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Realm.defaultPath;
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/**
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* This describes the different options used to create a {@link Realm} instance.
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* @typedef Realm~Configuration
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* @type {Object}
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* @property {ArrayBuffer|ArrayBufferView} [encryptionKey] - The 512-bit (64-byte) encryption
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* key used to encrypt and decrypt all data in the Realm.
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* @property {callback(Realm, Realm)} [migration] - The function to run if a migration is needed.
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* This function should provide all the logic for converting data models from previous schemas
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* to the new schema.
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* This function takes two arguments:
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* - `oldRealm` - The Realm before migration is performed.
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* - `newRealm` - The Realm that uses the latest `schema`, which should be modified as necessary.
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* @property {boolean} [deleteRealmIfMigrationNeeded=false] - Specifies if this Realm should be deleted
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* if a migration is needed.
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* @property {callback(number, number)} [shouldCompactOnLaunch] - The function called when opening
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* a Realm for the first time during the life of a process to determine if it should be compacted
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* before being returned to the user. The function takes two arguments:
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* - `totalSize` - The total file size (data + free space)
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* - `unusedSize` - The total bytes used by data in the file.
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* It returns `true` to indicate that an attempt to compact the file should be made. The compaction
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* will be skipped if another process is accessing it.
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* @property {string} [path={@link Realm.defaultPath}] - The path to the file where the
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* Realm database should be stored.
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* @property {boolean} [inMemory=false] - Specifies if this Realm should be opened in-memory. This
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* still requires a path (can be the default path) to identify the Realm so other processes can
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* open the same Realm. The file will also be used as swap space if the Realm becomes bigger than
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* what fits in memory, but it is not persistent and will be removed when the last instance
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* is closed.
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* @property {boolean} [readOnly=false] - Specifies if this Realm should be opened as read-only.
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* @property {Array<Realm~ObjectClass|Realm~ObjectSchema>} [schema] - Specifies all the
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* object types in this Realm. **Required** when first creating a Realm at this `path`.
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* If omitted, the schema will be read from the existing Realm file.
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* @property {number} [schemaVersion] - **Required** (and must be incremented) after
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* changing the `schema`.
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* @property {Object} [sync] - Sync configuration parameters with the following
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* child properties:
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* - `user` - A `User` object obtained by calling `Realm.Sync.User.login`
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* - `url` - A `string` which contains a valid Realm Sync url
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* - `error` - A callback function which is called in error situations.
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* The `error` callback can take up to four optional arguments: `message`, `isFatal`,
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* `category`, and `code`.
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* - `validate_ssl` - Indicating if SSL certificates must be validated
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* - `ssl_trust_certificate_path` - A path where to find trusted SSL certificates
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* - `open_ssl_verify_callback` - A callback function used to accept or reject the server's
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* SSL certificate. open_ssl_verify_callback is called with an object of type
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* <code>
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* {
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* serverAddress: String,
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* serverPort: Number,
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* pemCertificate: String,
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* acceptedByOpenSSL: Boolean,
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* depth: Number
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* }
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* </code>
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* The return value of open_ssl_verify_callback decides whether the certificate is accepted (true)
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* or rejected (false). The open_ssl_verify_callback function is only respected on platforms where
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* OpenSSL is used for the sync client, e.g. Linux. The open_ssl_verify_callback function is not
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* allowed to throw exceptions. If the operations needed to verify the certificate lead to an exception,
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* the exception must be caught explicitly before returning. The return value would typically be false
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* in case of an exception.
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*
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* When the sync client has received the server's certificate chain, it presents every certificate in
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* the chain to the open_ssl_verify_callback function. The depth argument specifies the position of the
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* certificate in the chain. depth = 0 represents the actual server certificate. The root
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* certificate has the highest depth. The certificate of highest depth will be presented first.
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*
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* acceptedByOpenSSL is true if OpenSSL has accepted the certificate, and false if OpenSSL has rejected it.
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* It is generally safe to return true when acceptedByOpenSSL is true. If acceptedByOpenSSL is false, an
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* independent verification should be made.
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*
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* One possible way of using the open_ssl_verify_callback function is to embed the known server certificate
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* in the client and accept the presented certificate if and only if it is equal to the known certificate.
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*
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* The purpose of open_ssl_verify_callback is to enable custom certificate handling and to solve cases where
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* OpenSSL erroneously rejects valid certificates possibly because OpenSSL doesn't have access to the
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* proper trust certificates.
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* - `partial` - Whether this Realm should be opened in 'partial synchronization' mode.
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* Partial synchronisation only synchronizes those objects that match the query specified in contrast
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* to the normal mode of operation that synchronises all objects in a remote Realm.
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* **Partial synchronization is a tech preview. Its APIs are subject to change.**
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*/
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/**
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* Realm objects will inherit methods, getters, and setters from the `prototype` of this
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* constructor. It is **highly recommended** that this constructor inherit from
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* {@link Realm.Object}.
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* @typedef Realm~ObjectClass
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* @type {Class}
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* @property {Realm~ObjectSchema} schema - Static property specifying object schema information.
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*/
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/**
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* @typedef Realm~ObjectSchema
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* @type {Object}
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* @property {string} name - Represents the object type.
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* @property {string} [primaryKey] - The name of a `"string"` or `"int"` property
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* that must be unique across all objects of this type within the same Realm.
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* @property {Object<string, (Realm~PropertyType|Realm~ObjectSchemaProperty)>} properties -
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* An object where the keys are property names and the values represent the property type.
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*
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* @example
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* let MyClassSchema = {
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* name: 'MyClass',
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* primaryKey: 'pk',
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* properties: {
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* pk: 'int',
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* optionalFloatValue: 'float?' // or {type: 'float', optional: true}
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* listOfStrings: 'string[]',
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* listOfOptionalDates: 'date?[]',
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* indexedInt: {type: 'int', indexed: true}
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*
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* linkToObject: 'MyClass',
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* listOfObjects: 'MyClass[]', // or {type: 'list', objectType: 'MyClass'}
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* objectsLinkingToThisObject: {type: 'linkingObjects', objectType: 'MyClass', property: 'linkToObject'}
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* }
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* };
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*/
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/**
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* @typedef Realm~ObjectSchemaProperty
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* @type {Object}
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* @property {Realm~PropertyType} type - The type of this property.
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* @property {Realm~PropertyType} [objectType] - **Required** when `type` is `"list"` or `"linkingObjects"`,
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* and must match the type of an object in the same schema, or, for `"list"`
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* only, any other type which may be stored as a Realm property.
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* @property {string} [property] - **Required** when `type` is `"linkingObjects"`, and must match
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* the name of a property on the type specified in `objectType` that links to the type this property belongs to.
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* @property {any} [default] - The default value for this property on creation when not
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* otherwise specified.
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* @property {boolean} [optional] - Signals if this property may be assigned `null` or `undefined`.
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* For `"list"` properties of non-object types, this instead signals whether the values inside the list may be assigned `null` or `undefined`.
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* This is not supported for `"list"` properties of object types and `"linkingObjects"` properties.
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* @property {boolean} [indexed] - Signals if this property should be indexed. Only supported for
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* `"string"`, `"int"`, and `"bool"` properties.
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*/
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/**
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* The type of an object may either be specified as a string equal to the `name` in a
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* {@link Realm~ObjectSchema ObjectSchema} definition, **or** a constructor that was specified
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* in the {@link Realm~Configuration configuration} `schema`.
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* @typedef Realm~ObjectType
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* @type {string|Realm~ObjectClass}
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*/
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/**
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* A property type may be specified as one of the standard builtin types, or as
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* an object type inside the same schema.
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*
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* When specifying property types in an {@linkplain Realm~ObjectSchema object schema}, you
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* may append `?` to any of the property types to indicate that it is optional
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* (i.e. it can be `null` in addition to the normal values) and `[]` to
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* indicate that it is instead a list of that type. For example,
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* `optionalIntList: 'int?[]'` would declare a property which is a list of
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* nullable integers. The property types reported by {@linkplain Realm.Collection
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* collections} and in a Realm's schema will never
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* use these forms.
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*
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* @typedef Realm~PropertyType
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* @type {("bool"|"int"|"float"|"double"|"string"|"date"|"data"|"list"|"linkingObjects"|"<ObjectType>")}
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*
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* @property {boolean} "bool" - Property value may either be `true` or `false`.
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* @property {number} "int" - Property may be assigned any number, but will be stored as a
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* round integer, meaning anything after the decimal will be truncated.
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* @property {number} "float" - Property may be assigned any number, but will be stored as a
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* `float`, which may result in a loss of precision.
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* @property {number} "double" - Property may be assigned any number, and will have no loss
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* of precision.
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* @property {string} "string" - Property value may be any arbitrary string.
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* @property {Date} "date" - Property may be assigned any `Date` instance.
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* @property {ArrayBuffer} "data" - Property may either be assigned an `ArrayBuffer`
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* or `ArrayBufferView` (e.g. `DataView`, `Int8Array`, `Float32Array`, etc.) instance,
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* but will always be returned as an `ArrayBuffer`.
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* @property {Realm.List} "list" - Property may be assigned any ordered collection
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* (e.g. `Array`, {@link Realm.List}, {@link Realm.Results}) of objects all matching the
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* `objectType` specified in the {@link Realm~ObjectSchemaProperty ObjectSchemaProperty}.
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* @property {Realm.Results} "linkingObjects" - Property is read-only and always returns a {@link Realm.Results}
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* of all the objects matching the `objectType` that are linking to the current object
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* through the `property` relationship specified in {@link Realm~ObjectSchemaProperty ObjectSchemaProperty}.
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* @property {Realm.Object} "<ObjectType>" - A string that matches the `name` of an object in the
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* same schema (see {@link Realm~ObjectSchema ObjectSchema}) – this property may be assigned
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* any object of this type from inside the same Realm, and will always be _optional_
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* (meaning it may also be assigned `null` or `undefined`).
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*/
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