355 lines
15 KiB
JavaScript
355 lines
15 KiB
JavaScript
////////////////////////////////////////////////////////////////////////////
|
||
//
|
||
// 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.
|
||
//
|
||
////////////////////////////////////////////////////////////////////////////
|
||
|
||
/**
|
||
* A Realm instance represents a Realm database.
|
||
* ```js
|
||
* const Realm = require('realm');
|
||
* ```
|
||
*/
|
||
class Realm {
|
||
/**
|
||
* Indicates if this Realm contains any objects.
|
||
* @type {boolean}
|
||
* @readonly
|
||
* @since 1.10.0
|
||
*/
|
||
get empty() {}
|
||
|
||
/**
|
||
* The path to the file where this Realm is stored.
|
||
* @type {string}
|
||
* @readonly
|
||
* @since 0.12.0
|
||
*/
|
||
get path() {}
|
||
|
||
/**
|
||
* Indicates if this Realm was opened as read-only.
|
||
* @type {boolean}
|
||
* @readonly
|
||
* @since 0.12.0
|
||
*/
|
||
get readOnly() {}
|
||
|
||
/**
|
||
* A normalized representation of the schema provided in the
|
||
* {@link Realm~Configuration Configuration} when this Realm was constructed.
|
||
* @type {Realm~ObjectSchema[]}
|
||
* @readonly
|
||
* @since 0.12.0
|
||
*/
|
||
get schema() {}
|
||
|
||
/**
|
||
* The current schema version of this Realm.
|
||
* @type {number}
|
||
* @readonly
|
||
* @since 0.12.0
|
||
*/
|
||
get schemaVersion() {}
|
||
|
||
/**
|
||
* Indicates if this Realm is in a write transaction.
|
||
* @type {boolean}
|
||
* @readonly
|
||
* @since 1.10.3
|
||
*/
|
||
get isInTransaction() {}
|
||
|
||
/**
|
||
* Gets the sync session if this is a synced Realm
|
||
* @type {Session}
|
||
*/
|
||
get syncSession() {}
|
||
|
||
/**
|
||
* Create a new `Realm` instance using the provided `config`. If a Realm does not yet exist
|
||
* at `config.path` (or {@link Realm.defaultPath} if not provided), then this constructor
|
||
* will create it with the provided `config.schema` (which is _required_ in this case).
|
||
* Otherwise, the instance will access the existing Realm from the file at that path.
|
||
* In this case, `config.schema` is _optional_ or not have changed, unless
|
||
* `config.schemaVersion` is incremented, in which case the Realm will be automatically
|
||
* migrated to use the new schema.
|
||
* @param {Realm~Configuration} [config] - **Required** when first creating the Realm.
|
||
* @throws {Error} If anything in the provided `config` is invalid.
|
||
*/
|
||
constructor(config) {}
|
||
|
||
/**
|
||
* Open a realm asynchronously with a promise. If the realm is synced, it will be fully
|
||
* synchronized before it is available.
|
||
* @param {Realm~Configuration} config
|
||
* @returns {Promise} - a promise that will be resolved with the realm instance when it's available.
|
||
*/
|
||
static open(config) {}
|
||
|
||
/**
|
||
* Open a realm asynchronously with a callback. If the realm is synced, it will be fully
|
||
* synchronized before it is available.
|
||
* @param {Realm~Configuration} config
|
||
* @param {callback(error, realm)} - will be called when the realm is ready.
|
||
* @throws {Error} If anything in the provided `config` is invalid.
|
||
*/
|
||
static openAsync(config, callback) {}
|
||
|
||
/**
|
||
* Closes this Realm so it may be re-opened with a newer schema version.
|
||
* All objects and collections from this Realm are no longer valid after calling this method.
|
||
*/
|
||
close() {}
|
||
|
||
/**
|
||
* Create a new Realm object of the given type and with the specified properties.
|
||
* @param {Realm~ObjectType} type - The type of Realm object to create.
|
||
* @param {Object} properties - Property values for all required properties without a
|
||
* default value.
|
||
* @param {boolean} [update=false] - Signals that an existing object with matching primary key
|
||
* should be updated. Only the primary key property and properties which should be updated
|
||
* need to be specified. All missing property values will remain unchanged.
|
||
* @returns {Realm.Object}
|
||
*/
|
||
create(type, properties, update) {}
|
||
|
||
/**
|
||
* Deletes the provided Realm object, or each one inside the provided collection.
|
||
* @param {Realm.Object|Realm.Object[]|Realm.List|Realm.Results} object
|
||
*/
|
||
delete(object) {}
|
||
|
||
/**
|
||
* **WARNING:** This will delete **all** objects in the Realm!
|
||
*/
|
||
deleteAll() {}
|
||
|
||
/**
|
||
* Returns all objects of the given `type` in the Realm.
|
||
* @param {Realm~ObjectType} type - The type of Realm objects to retrieve.
|
||
* @throws {Error} If type passed into this method is invalid.
|
||
* @returns {Realm.Results} that will live-update as objects are created and destroyed.
|
||
*/
|
||
objects(type) {}
|
||
|
||
/**
|
||
* Searches for a Realm object by its primary key.
|
||
* @param {Realm~ObjectType} type - The type of Realm object to search for.
|
||
* @param {number|string} key - The primary key value of the object to search for.
|
||
* @throws {Error} If type passed into this method is invalid or if the object type did
|
||
* not have a `primaryKey` specified in its {@link Realm~ObjectSchema ObjectSchema}.
|
||
* @returns {Realm.Object|undefined} if no object is found.
|
||
* @since 0.14.0
|
||
*/
|
||
objectForPrimaryKey(type, key) {}
|
||
|
||
/**
|
||
* Add a listener `callback` for the specified event `name`.
|
||
* @param {string} name - The name of event that should cause the callback to be called.
|
||
* _Currently, only the "change" event supported_.
|
||
* @param {callback(Realm, string)} callback - Function to be called when the event occurs.
|
||
* Each callback will only be called once per event, regardless of the number of times
|
||
* it was added.
|
||
* @throws {Error} If an invalid event `name` is supplied, or if `callback` is not a function.
|
||
*/
|
||
addListener(name, callback) {}
|
||
|
||
/**
|
||
* Remove the listener `callback` for the specfied event `name`.
|
||
* @param {string} name - The event name.
|
||
* _Currently, only the "change" event supported_.
|
||
* @param {callback(Realm, string)} callback - Function that was previously added as a
|
||
* listener for this event through the {@link Realm#addListener addListener} method.
|
||
* @throws {Error} If an invalid event `name` is supplied, or if `callback` is not a function.
|
||
*/
|
||
removeListener(name, callback) {}
|
||
|
||
/**
|
||
* Remove all event listeners (restricted to the event `name`, if provided).
|
||
* @param {string} [name] - The name of the event whose listeners should be removed.
|
||
* _Currently, only the "change" event supported_.
|
||
* @throws {Error} When invalid event `name` is supplied
|
||
*/
|
||
removeAllListeners(name) {}
|
||
|
||
/**
|
||
* Synchronously call the provided `callback` inside a write transaction.
|
||
* @param {function()} callback
|
||
*/
|
||
write(callback) {}
|
||
|
||
/**
|
||
* Initiate a write transaction.
|
||
* @throws {Error} When already in write transaction
|
||
*/
|
||
beginTransaction() {}
|
||
|
||
/**
|
||
* Commit a write transaction.
|
||
*/
|
||
commitTransaction() {}
|
||
|
||
/**
|
||
* Cancel a write transaction.
|
||
*/
|
||
cancelTransaction() {}
|
||
|
||
/*
|
||
* Replaces all string columns in this Realm with a string enumeration column and compacts the
|
||
* database file.
|
||
*
|
||
* Cannot be called from a write transaction.
|
||
*
|
||
* Compaction will not occur if other `Realm` instances exist.
|
||
*
|
||
* While compaction is in progress, attempts by other threads or processes to open the database will
|
||
* wait.
|
||
*
|
||
* Be warned that resource requirements for compaction is proportional to the amount of live data in
|
||
* the database. Compaction works by writing the database contents to a temporary database file and
|
||
* then replacing the database with the temporary one.
|
||
* @returns {true} if compaction succeeds.
|
||
*/
|
||
compact() {}
|
||
}
|
||
|
||
/**
|
||
* Get the current schema version of the Realm at the given path.
|
||
* @param {string} path - The path to the file where the
|
||
* Realm database is stored.
|
||
* @param {ArrayBuffer|ArrayBufferView} [encryptionKey] - Required only when
|
||
* accessing encrypted Realms.
|
||
* @throws {Error} When passing an invalid or non-matching encryption key.
|
||
* @returns {number} version of the schema, or `-1` if no Realm exists at `path`.
|
||
*/
|
||
Realm.schemaVersion = function(path, encryptionKey) {};
|
||
|
||
/**
|
||
* Delete the Realm file for the given configuration.
|
||
* @param {Realm~Configuration} config
|
||
* @throws {Error} If anything in the provided `config` is invalid.
|
||
*/
|
||
Realm.deleteFile = function(config) {};
|
||
|
||
/**
|
||
* The default path where to create and access the Realm file.
|
||
* @type {string}
|
||
*/
|
||
Realm.defaultPath;
|
||
|
||
/**
|
||
* This describes the different options used to create a {@link Realm} instance.
|
||
* @typedef Realm~Configuration
|
||
* @type {Object}
|
||
* @property {ArrayBuffer|ArrayBufferView} [encryptionKey] - The 512-bit (64-byte) encryption
|
||
* key used to encrypt and decrypt all data in the Realm.
|
||
* @property {callback(Realm, Realm)} [migration] - The function to run if a migration is needed.
|
||
* This function should provide all the logic for converting data models from previous schemas
|
||
* to the new schema.
|
||
* This function takes two arguments:
|
||
* - `oldRealm` - The Realm before migration is performed.
|
||
* - `newRealm` - The Realm that uses the latest `schema`, which should be modified as necessary.
|
||
* @property {callback(number, number)} [shouldCompactOnLaunch] - The function called when opening
|
||
* a Realm for the first time during the life of a process to determine if it should be compacted
|
||
* before being returned to the user. The function takes two arguments:
|
||
* - `totalSize` - The total file size (data + free space)
|
||
* - `unusedSize` - The total bytes used by data in the file.
|
||
* It returns `true` to indicate that an attempt to compact the file should be made. The compaction
|
||
* will be skipped if another process is accessing it.
|
||
* @property {string} [path={@link Realm.defaultPath}] - The path to the file where the
|
||
* Realm database should be stored.
|
||
* @property {boolean} [readOnly=false] - Specifies if this Realm should be opened as read-only.
|
||
* @property {Array<Realm~ObjectClass|Realm~ObjectSchema>} [schema] - Specifies all the
|
||
* object types in this Realm. **Required** when first creating a Realm at this `path`.
|
||
* @property {number} [schemaVersion] - **Required** (and must be incremented) after
|
||
* changing the `schema`.
|
||
* @property {Object} [sync] - Sync configuration parameters with the following
|
||
* child properties:
|
||
* - `user` - A `User` object obtained by calling `Realm.Sync.User.login`
|
||
* - `url` - A `string` which contains a valid Realm Sync url
|
||
*/
|
||
|
||
/**
|
||
* Realm objects will inherit methods, getters, and setters from the `prototype` of this
|
||
* constructor. It is **highly recommended** that this constructor inherit from
|
||
* {@link Realm.Object}.
|
||
* @typedef Realm~ObjectClass
|
||
* @type {Class}
|
||
* @property {Realm~ObjectSchema} schema - Static property specifying object schema information.
|
||
*/
|
||
|
||
/**
|
||
* @typedef Realm~ObjectSchema
|
||
* @type {Object}
|
||
* @property {string} name - Represents the object type.
|
||
* @property {string} [primaryKey] - The name of a `"string"` or `"int"` property
|
||
* that must be unique across all objects of this type within the same Realm.
|
||
* @property {Object<string, (Realm~PropertyType|Realm~ObjectSchemaProperty)>} properties -
|
||
* An object where the keys are property names and the values represent the property type.
|
||
*/
|
||
|
||
/**
|
||
* @typedef Realm~ObjectSchemaProperty
|
||
* @type {Object}
|
||
* @property {Realm~PropertyType} type - The type of this property.
|
||
* @property {string} [objectType] - **Required** when `type` is `"list"` or `"linkingObjects"`,
|
||
* and must match the type of an object in the same schema.
|
||
* @property {string} [property] - **Required** when `type` is `"linkingObjects"`, and must match
|
||
* the name of a property on the type specified in `objectType` that links to the type this property belongs to.
|
||
* @property {any} [default] - The default value for this property on creation when not
|
||
* otherwise specified.
|
||
* @property {boolean} [optional] - Signals if this property may be assigned `null` or `undefined`.
|
||
* @property {boolean} [indexed] - Signals if this property should be indexed. Only supported for
|
||
* `"string"`, `"int"`, and `"bool"` properties.
|
||
*/
|
||
|
||
/**
|
||
* The type of an object may either be specified as a string equal to the `name` in a
|
||
* {@link Realm~ObjectSchema ObjectSchema} definition, **or** a constructor that was specified
|
||
* in the {@link Realm~Configuration configuration} `schema`.
|
||
* @typedef Realm~ObjectType
|
||
* @type {string|Realm~ObjectClass}
|
||
*/
|
||
|
||
/**
|
||
* A property type may be specified as one of the standard builtin types, or as an object type
|
||
* inside the same schema.
|
||
* @typedef Realm~PropertyType
|
||
* @type {("bool"|"int"|"float"|"double"|"string"|"date"|"data"|"list"|"linkingObjects"|"<ObjectType>")}
|
||
* @property {boolean} "bool" - Property value may either be `true` or `false`.
|
||
* @property {number} "int" - Property may be assigned any number, but will be stored as a
|
||
* round integer, meaning anything after the decimal will be truncated.
|
||
* @property {number} "float" - Property may be assigned any number, but will be stored as a
|
||
* `float`, which may result in a loss of precision.
|
||
* @property {number} "double" - Property may be assigned any number, and will have no loss
|
||
* of precision.
|
||
* @property {string} "string" - Property value may be any arbitrary string.
|
||
* @property {Date} "date" - Property may be assigned any `Date` instance.
|
||
* @property {ArrayBuffer} "data" - Property may either be assigned an `ArrayBuffer`
|
||
* or `ArrayBufferView` (e.g. `DataView`, `Int8Array`, `Float32Array`, etc.) instance,
|
||
* but will always be returned as an `ArrayBuffer`.
|
||
* @property {Realm.List} "list" - Property may be assigned any ordered collection
|
||
* (e.g. `Array`, {@link Realm.List}, {@link Realm.Results}) of objects all matching the
|
||
* `objectType` specified in the {@link Realm~ObjectSchemaProperty ObjectSchemaProperty}.
|
||
* @property {Realm.Results} "linkingObjects" - Property is read-only and always returns a {@link Realm.Results}
|
||
* of all the objects matching the `objectType` that are linking to the current object
|
||
* through the `property` relationship specified in {@link Realm~ObjectSchemaProperty ObjectSchemaProperty}.
|
||
* @property {Realm.Object} "<ObjectType>" - A string that matches the `name` of an object in the
|
||
* same schema (see {@link Realm~ObjectSchema ObjectSchema}) – this property may be assigned
|
||
* any object of this type from inside the same Realm, and will always be _optional_
|
||
* (meaning it may also be assigned `null` or `undefined`).
|
||
*/
|