@decaf-ts/core
Version:
Core persistence module for the decaf framework
336 lines • 41.2 kB
JavaScript
import { ConflictError, onCreate, onCreateUpdate, onDelete, onUpdate, afterAny, } from "@decaf-ts/db-decorators";
import { metadata } from "@decaf-ts/reflection";
import { PersistenceKeys } from "./../persistence/constants.js";
import { DefaultCascade } from "./../repository/constants.js";
import { Decoration, list, Model, prop, propMetadata, type, } from "@decaf-ts/decorator-validation";
import { Adapter } from "./../persistence/Adapter.js";
import { Repository } from "./../repository/Repository.js";
import { Condition } from "./../query/Condition.js";
import { oneToManyOnCreate, oneToManyOnDelete, oneToManyOnUpdate, oneToOneOnCreate, oneToOneOnDelete, oneToOneOnUpdate, populate as pop, } from "./construction.js";
import { AuthorizationError } from "./../utils/index.js";
/**
* @description Specifies the database table name for a model
* @summary Decorator that sets the table name for a model class in the database
* @param {string} tableName - The name of the table in the database
* @return {Function} A decorator function that can be applied to a class
* @function table
* @category Class Decorators
*/
export function table(tableName) {
return metadata(Adapter.key(PersistenceKeys.TABLE), tableName);
}
/**
* @description Specifies the database column name for a model property
* @summary Decorator that maps a model property to a specific column name in the database
* @param {string} columnName - The name of the column in the database
* @return {Function} A decorator function that can be applied to a class property
* @function column
* @category Property Decorators
*/
export function column(columnName) {
return propMetadata(Adapter.key(PersistenceKeys.COLUMN), columnName);
}
/**
* @description Creates an index on a model property for improved query performance
* @summary Decorator that marks a property to be indexed in the database, optionally with specific directions and compositions
* @param {OrderDirection[]} [directions] - Optional array of sort directions for the index
* @param {string[]} [compositions] - Optional array of property names to create a composite index
* @return {Function} A decorator function that can be applied to a class property
* @function index
* @category Property Decorators
*/
export function index(directions, compositions) {
return propMetadata(Repository.key(`${PersistenceKeys.INDEX}${compositions && compositions.length ? `.${compositions.join(".")}` : ""}`), {
directions: directions,
compositions: compositions,
});
}
/**
* @description Enforces uniqueness constraint during model creation and update
* @summary Internal function used by the unique decorator to check if a property value already exists in the database
* @template M - The model type extending Model
* @template R - The repository type extending Repo<M, F, C>
* @template V - The metadata type
* @template F - The repository flags type
* @template C - The context type extending Context<F>
* @param {R} this - The repository instance
* @param {Context<F>} context - The context for the operation
* @param {V} data - The metadata for the property
* @param key - The property key to check for uniqueness
* @param {M} model - The model instance being created or updated
* @return {Promise<void>} A promise that resolves when the check is complete or rejects with a ConflictError
* @function uniqueOnCreateUpdate
* @memberOf module:core
*/
export async function uniqueOnCreateUpdate(context, data, key, model) {
if (!model[key])
return;
const existing = await this.select()
.where(Condition.attribute(key).eq(model[key]))
.execute();
if (existing.length)
throw new ConflictError(`model already exists with property ${key} equal to ${JSON.stringify(model[key], undefined, 2)}`);
}
/**
* @description Tags a property as unique
* @summary Decorator that ensures a property value is unique across all instances of a model in the database
* @return {Function} A decorator function that can be applied to a class property
* @function unique
* @category Property Decorators
* @example
* ```typescript
* class User extends BaseModel {
* @unique()
* @required()
* username!: string;
* }
* ```
*/
export function unique() {
const key = Repository.key(PersistenceKeys.UNIQUE);
return Decoration.for(key)
.define(onCreateUpdate(uniqueOnCreateUpdate), propMetadata(key, {}))
.apply();
}
/**
* @description Handles user identification for ownership tracking
* @summary Internal function used by the createdBy and updatedBy decorators to set ownership information
* @template M - The model type extending Model
* @template R - The repository type extending Repo<M, F, C>
* @template V - The relations metadata type extending RelationsMetadata
* @template F - The repository flags type
* @template C - The context type extending Context<F>
* @param {R} this - The repository instance
* @param {Context<F>} context - The context for the operation
* @param {V} data - The metadata for the property
* @param key - The property key to store the user identifier
* @param {M} model - The model instance being created or updated
* @return {Promise<void>} A promise that rejects with an AuthorizationError if user identification is not supported
* @function createdByOnCreateUpdate
* @memberOf module:core
*/
export async function createdByOnCreateUpdate(
// eslint-disable-next-line @typescript-eslint/no-unused-vars
context,
// eslint-disable-next-line @typescript-eslint/no-unused-vars
data,
// eslint-disable-next-line @typescript-eslint/no-unused-vars
key,
// eslint-disable-next-line @typescript-eslint/no-unused-vars
model) {
throw new AuthorizationError("This adapter does not support user identification");
}
/**
* @description Tracks the creator of a model instance
* @summary Decorator that marks a property to store the identifier of the user who created the model instance
* @return {Function} A decorator function that can be applied to a class property
* @function createdBy
* @category Property Decorators
* @example
* ```typescript
* class Document extends BaseModel {
* @createdBy()
* creator!: string;
* }
* ```
*/
export function createdBy() {
const key = Repository.key(PersistenceKeys.CREATED_BY);
return Decoration.for(key)
.define(onCreate(createdByOnCreateUpdate), propMetadata(key, {}))
.apply();
}
/**
* @description Tracks the last updater of a model instance
* @summary Decorator that marks a property to store the identifier of the user who last updated the model instance
* @return {Function} A decorator function that can be applied to a class property
* @function updatedBy
* @category Property Decorators
* @example
* ```typescript
* class Document extends BaseModel {
* @updatedBy()
* lastEditor!: string;
* }
* ```
*/
export function updatedBy() {
const key = Repository.key(PersistenceKeys.UPDATED_BY);
return Decoration.for(key)
.define(onCreateUpdate(createdByOnCreateUpdate), propMetadata(key, {}))
.apply();
}
/**
* @description Defines a one-to-one relationship between models
* @summary Decorator that establishes a one-to-one relationship between the current model and another model
* @template M - The related model type extending Model
* @param {Constructor<M>} clazz - The constructor of the related model class
* @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)
* @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved
* @return {Function} A decorator function that can be applied to a class property
* @function oneToOne
* @category Property Decorators
* @example
* ```typescript
* class User extends BaseModel {
* @oneToOne(Profile)
* profile!: string | Profile;
* }
*
* class Profile extends BaseModel {
* @required()
* bio!: string;
* }
* ```
* @see oneToMany
* @see manyToOne
*/
export function oneToOne(clazz, cascadeOptions = DefaultCascade, populate = true) {
Model.register(clazz);
const metadata = {
class: clazz.name,
cascade: cascadeOptions,
populate: populate,
};
const key = Repository.key(PersistenceKeys.ONE_TO_ONE);
return Decoration.for(key)
.define(prop(PersistenceKeys.RELATIONS), type([clazz.name, String.name, Number.name, BigInt.name]), onCreate(oneToOneOnCreate, metadata), onUpdate(oneToOneOnUpdate, metadata), onDelete(oneToOneOnDelete, metadata), afterAny(pop, metadata), propMetadata(key, metadata))
.apply();
}
/**
* @description Defines a one-to-many relationship between models
* @summary Decorator that establishes a one-to-many relationship between the current model and multiple instances of another model
* @template M - The related model type extending Model
* @param {Constructor<M>} clazz - The constructor of the related model class
* @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)
* @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved
* @return {Function} A decorator function that can be applied to a class property
* @function oneToMany
* @category Property Decorators
* @example
* ```typescript
* class Author extends BaseModel {
* @required()
* name!: string;
*
* @oneToMany(Book)
* books!: string[] | Book[];
* }
*
* class Book extends BaseModel {
* @required()
* title!: string;
* }
* ```
* @see oneToOne
* @see manyToOne
*/
export function oneToMany(clazz, cascadeOptions = DefaultCascade, populate = true) {
Model.register(clazz);
const metadata = {
class: clazz.name,
cascade: cascadeOptions,
populate: populate,
};
const key = Repository.key(PersistenceKeys.ONE_TO_MANY);
return Decoration.for(key)
.define(prop(PersistenceKeys.RELATIONS), list([
clazz,
String,
Number,
// @ts-expect-error Bigint is not a constructor
BigInt,
]), onCreate(oneToManyOnCreate, metadata), onUpdate(oneToManyOnUpdate, metadata), onDelete(oneToManyOnDelete, metadata), afterAny(pop, metadata), propMetadata(key, metadata))
.apply();
}
/**
* @description Defines a many-to-one relationship between models
* @summary Decorator that establishes a many-to-one relationship between multiple instances of the current model and another model
* @template M - The related model type extending Model
* @param {Constructor<M>} clazz - The constructor of the related model class
* @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)
* @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved
* @return {Function} A decorator function that can be applied to a class property
* @function manyToOne
* @category Property Decorators
* @example
* ```typescript
* class Book extends BaseModel {
* @required()
* title!: string;
*
* @manyToOne(Author)
* author!: string | Author;
* }
*
* class Author extends BaseModel {
* @required()
* name!: string;
* }
* ```
* @see oneToMany
* @see oneToOne
*/
export function manyToOne(clazz, cascadeOptions = DefaultCascade, populate = true) {
Model.register(clazz);
const metadata = {
class: clazz.name,
cascade: cascadeOptions,
populate: populate,
};
const key = Repository.key(PersistenceKeys.MANY_TO_ONE);
return Decoration.for(key)
.define(prop(PersistenceKeys.RELATIONS), type([clazz.name, String.name, Number.name, BigInt.name]),
// onCreate(oneToManyOnCreate, metadata),
// onUpdate(oneToManyOnUpdate, metadata),
// onDelete(oneToManyOnDelete, metadata),
// afterAny(pop, metadata),
propMetadata(key, metadata))
.apply();
}
/**
* @description Defines a many-to-one relationship between models
* @summary Decorator that establishes a many-to-one relationship between multiple instances of the current model and another model
* @template M - The related model type extending Model
* @param {Constructor<M>} clazz - The constructor of the related model class
* @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)
* @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved
* @return {Function} A decorator function that can be applied to a class property
* @function manyToOne
* @category Property Decorators
* @example
* ```typescript
* class Book extends BaseModel {
* @required()
* title!: string;
*
* @manyToOne(Author)
* author!: string | Author;
* }
*
* class Author extends BaseModel {
* @required()
* name!: string;
* }
* ```
* @see oneToMany
* @see oneToOne
*/
export function manyToMany(clazz, cascadeOptions = DefaultCascade, populate = true) {
Model.register(clazz);
const metadata = {
class: clazz.name,
cascade: cascadeOptions,
populate: populate,
};
const key = Repository.key(PersistenceKeys.MANY_TO_ONE);
return Decoration.for(key)
.define(prop(PersistenceKeys.RELATIONS), type([clazz.name, String.name, Number.name, BigInt.name]),
// onCreate(oneToManyOnCreate, metadata),
// onUpdate(oneToManyOnUpdate, metadata),
// onDelete(oneToManyOnDelete, metadata),
// afterAll(populate, metadata),
propMetadata(key, metadata))
.apply();
}
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{\n  ConflictError,\n  onCreate,\n  onCreateUpdate,\n  onDelete,\n  onUpdate,\n  afterAny,\n  RepositoryFlags,\n  Context,\n} from \"@decaf-ts/db-decorators\";\nimport { apply, metadata } from \"@decaf-ts/reflection\";\nimport { PersistenceKeys } from \"../persistence/constants\";\nimport { CascadeMetadata, IndexMetadata } from \"../repository/types\";\nimport { DefaultCascade, OrderDirection } from \"../repository/constants\";\nimport {\n  Constructor,\n  Decoration,\n  list,\n  Model,\n  prop,\n  propMetadata,\n  type,\n} from \"@decaf-ts/decorator-validation\";\nimport { Adapter } from \"../persistence/Adapter\";\nimport { Repo, Repository } from \"../repository/Repository\";\nimport { Condition } from \"../query/Condition\";\nimport { RelationsMetadata } from \"./types\";\nimport {\n  oneToManyOnCreate,\n  oneToManyOnDelete,\n  oneToManyOnUpdate,\n  oneToOneOnCreate,\n  oneToOneOnDelete,\n  oneToOneOnUpdate,\n  populate as pop,\n} from \"./construction\";\nimport { AuthorizationError } from \"../utils\";\n\n/**\n * @description Specifies the database table name for a model\n * @summary Decorator that sets the table name for a model class in the database\n * @param {string} tableName - The name of the table in the database\n * @return {Function} A decorator function that can be applied to a class\n * @function table\n * @category Class Decorators\n */\nexport function table(tableName: string) {\n  return metadata(Adapter.key(PersistenceKeys.TABLE), tableName);\n}\n\n/**\n * @description Specifies the database column name for a model property\n * @summary Decorator that maps a model property to a specific column name in the database\n * @param {string} columnName - The name of the column in the database\n * @return {Function} A decorator function that can be applied to a class property\n * @function column\n * @category Property Decorators\n */\nexport function column(columnName: string) {\n  return propMetadata(Adapter.key(PersistenceKeys.COLUMN), columnName);\n}\n\n/**\n * @description Creates an index on a model property for improved query performance\n * @summary Decorator that marks a property to be indexed in the database, optionally with specific directions and compositions\n * @param {OrderDirection[]} [directions] - Optional array of sort directions for the index\n * @param {string[]} [compositions] - Optional array of property names to create a composite index\n * @return {Function} A decorator function that can be applied to a class property\n * @function index\n * @category Property Decorators\n */\nexport function index(directions?: OrderDirection[], compositions?: string[]) {\n  return propMetadata(\n    Repository.key(\n      `${PersistenceKeys.INDEX}${compositions && compositions.length ? `.${compositions.join(\".\")}` : \"\"}`\n    ),\n    {\n      directions: directions,\n      compositions: compositions,\n    } as IndexMetadata\n  );\n}\n\n/**\n * @description Enforces uniqueness constraint during model creation and update\n * @summary Internal function used by the unique decorator to check if a property value already exists in the database\n * @template M - The model type extending Model\n * @template R - The repository type extending Repo<M, F, C>\n * @template V - The metadata type\n * @template F - The repository flags type\n * @template C - The context type extending Context<F>\n * @param {R} this - The repository instance\n * @param {Context<F>} context - The context for the operation\n * @param {V} data - The metadata for the property\n * @param key - The property key to check for uniqueness\n * @param {M} model - The model instance being created or updated\n * @return {Promise<void>} A promise that resolves when the check is complete or rejects with a ConflictError\n * @function uniqueOnCreateUpdate\n * @memberOf module:core\n */\nexport async function uniqueOnCreateUpdate<\n  M extends Model,\n  R extends Repo<M, F, C>,\n  V extends object,\n  F extends RepositoryFlags,\n  C extends Context<F>,\n>(\n  this: R,\n  context: Context<F>,\n  data: V,\n  key: keyof M,\n  model: M\n): Promise<void> {\n  if (!(model as any)[key]) return;\n  const existing = await this.select()\n    .where(Condition.attribute(key).eq(model[key]))\n    .execute();\n  if (existing.length)\n    throw new ConflictError(\n      `model already exists with property ${key as string} equal to ${JSON.stringify((model as any)[key], undefined, 2)}`\n    );\n}\n\n/**\n * @description Tags a property as unique\n * @summary Decorator that ensures a property value is unique across all instances of a model in the database\n * @return {Function} A decorator function that can be applied to a class property\n * @function unique\n * @category Property Decorators\n * @example\n * ```typescript\n * class User extends BaseModel {\n *   @unique()\n *   @required()\n *   username!: string;\n * }\n * ```\n */\nexport function unique() {\n  const key = Repository.key(PersistenceKeys.UNIQUE);\n  return Decoration.for(key)\n    .define(onCreateUpdate(uniqueOnCreateUpdate), propMetadata(key, {}))\n    .apply();\n}\n\n/**\n * @description Handles user identification for ownership tracking\n * @summary Internal function used by the createdBy and updatedBy decorators to set ownership information\n * @template M - The model type extending Model\n * @template R - The repository type extending Repo<M, F, C>\n * @template V - The relations metadata type extending RelationsMetadata\n * @template F - The repository flags type\n * @template C - The context type extending Context<F>\n * @param {R} this - The repository instance\n * @param {Context<F>} context - The context for the operation\n * @param {V} data - The metadata for the property\n * @param key - The property key to store the user identifier\n * @param {M} model - The model instance being created or updated\n * @return {Promise<void>} A promise that rejects with an AuthorizationError if user identification is not supported\n * @function createdByOnCreateUpdate\n * @memberOf module:core\n */\nexport async function createdByOnCreateUpdate<\n  M extends Model,\n  R extends Repo<M, F, C>,\n  V extends RelationsMetadata,\n  F extends RepositoryFlags,\n  C extends Context<F>,\n>(\n  this: R,\n  // eslint-disable-next-line @typescript-eslint/no-unused-vars\n  context: Context<F>,\n  // eslint-disable-next-line @typescript-eslint/no-unused-vars\n  data: V,\n  // eslint-disable-next-line @typescript-eslint/no-unused-vars\n  key: keyof M,\n  // eslint-disable-next-line @typescript-eslint/no-unused-vars\n  model: M\n): Promise<void> {\n  throw new AuthorizationError(\n    \"This adapter does not support user identification\"\n  );\n}\n\n/**\n * @description Tracks the creator of a model instance\n * @summary Decorator that marks a property to store the identifier of the user who created the model instance\n * @return {Function} A decorator function that can be applied to a class property\n * @function createdBy\n * @category Property Decorators\n * @example\n * ```typescript\n * class Document extends BaseModel {\n *   @createdBy()\n *   creator!: string;\n * }\n * ```\n */\nexport function createdBy() {\n  const key = Repository.key(PersistenceKeys.CREATED_BY);\n  return Decoration.for(key)\n    .define(onCreate(createdByOnCreateUpdate), propMetadata(key, {}))\n    .apply();\n}\n\n/**\n * @description Tracks the last updater of a model instance\n * @summary Decorator that marks a property to store the identifier of the user who last updated the model instance\n * @return {Function} A decorator function that can be applied to a class property\n * @function updatedBy\n * @category Property Decorators\n * @example\n * ```typescript\n * class Document extends BaseModel {\n *   @updatedBy()\n *   lastEditor!: string;\n * }\n * ```\n */\nexport function updatedBy() {\n  const key = Repository.key(PersistenceKeys.UPDATED_BY);\n  return Decoration.for(key)\n    .define(onCreateUpdate(createdByOnCreateUpdate), propMetadata(key, {}))\n    .apply();\n}\n\n/**\n * @description Defines a one-to-one relationship between models\n * @summary Decorator that establishes a one-to-one relationship between the current model and another model\n * @template M - The related model type extending Model\n * @param {Constructor<M>} clazz - The constructor of the related model class\n * @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)\n * @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved\n * @return {Function} A decorator function that can be applied to a class property\n * @function oneToOne\n * @category Property Decorators\n * @example\n * ```typescript\n * class User extends BaseModel {\n *   @oneToOne(Profile)\n *   profile!: string | Profile;\n * }\n *\n * class Profile extends BaseModel {\n *   @required()\n *   bio!: string;\n * }\n * ```\n * @see oneToMany\n * @see manyToOne\n */\nexport function oneToOne<M extends Model>(\n  clazz: Constructor<M>,\n  cascadeOptions: CascadeMetadata = DefaultCascade,\n  populate: boolean = true\n) {\n  Model.register(clazz);\n  const metadata: RelationsMetadata = {\n    class: clazz.name,\n    cascade: cascadeOptions,\n    populate: populate,\n  };\n  const key = Repository.key(PersistenceKeys.ONE_TO_ONE);\n  return Decoration.for(key)\n    .define(\n      prop(PersistenceKeys.RELATIONS),\n      type([clazz.name, String.name, Number.name, BigInt.name]),\n      onCreate(oneToOneOnCreate, metadata),\n      onUpdate(oneToOneOnUpdate, metadata),\n      onDelete(oneToOneOnDelete, metadata),\n      afterAny(pop, metadata),\n      propMetadata(key, metadata)\n    )\n    .apply();\n}\n\n/**\n * @description Defines a one-to-many relationship between models\n * @summary Decorator that establishes a one-to-many relationship between the current model and multiple instances of another model\n * @template M - The related model type extending Model\n * @param {Constructor<M>} clazz - The constructor of the related model class\n * @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)\n * @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved\n * @return {Function} A decorator function that can be applied to a class property\n * @function oneToMany\n * @category Property Decorators\n * @example\n * ```typescript\n * class Author extends BaseModel {\n *   @required()\n *   name!: string;\n *\n *   @oneToMany(Book)\n *   books!: string[] | Book[];\n * }\n *\n * class Book extends BaseModel {\n *   @required()\n *   title!: string;\n * }\n * ```\n * @see oneToOne\n * @see manyToOne\n */\nexport function oneToMany<M extends Model>(\n  clazz: Constructor<M>,\n  cascadeOptions: CascadeMetadata = DefaultCascade,\n  populate: boolean = true\n) {\n  Model.register(clazz);\n  const metadata: RelationsMetadata = {\n    class: clazz.name,\n    cascade: cascadeOptions,\n    populate: populate,\n  };\n  const key = Repository.key(PersistenceKeys.ONE_TO_MANY);\n  return Decoration.for(key)\n    .define(\n      prop(PersistenceKeys.RELATIONS),\n      list([\n        clazz,\n        String,\n        Number,\n        // @ts-expect-error Bigint is not a constructor\n        BigInt,\n      ]),\n      onCreate(oneToManyOnCreate, metadata),\n      onUpdate(oneToManyOnUpdate, metadata),\n      onDelete(oneToManyOnDelete, metadata),\n      afterAny(pop, metadata),\n      propMetadata(key, metadata)\n    )\n    .apply();\n}\n\n/**\n * @description Defines a many-to-one relationship between models\n * @summary Decorator that establishes a many-to-one relationship between multiple instances of the current model and another model\n * @template M - The related model type extending Model\n * @param {Constructor<M>} clazz - The constructor of the related model class\n * @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)\n * @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved\n * @return {Function} A decorator function that can be applied to a class property\n * @function manyToOne\n * @category Property Decorators\n * @example\n * ```typescript\n * class Book extends BaseModel {\n *   @required()\n *   title!: string;\n *\n *   @manyToOne(Author)\n *   author!: string | Author;\n * }\n *\n * class Author extends BaseModel {\n *   @required()\n *   name!: string;\n * }\n * ```\n * @see oneToMany\n * @see oneToOne\n */\nexport function manyToOne<M extends Model>(\n  clazz: Constructor<M>,\n  cascadeOptions: CascadeMetadata = DefaultCascade,\n  populate = true\n) {\n  Model.register(clazz);\n  const metadata: RelationsMetadata = {\n    class: clazz.name,\n    cascade: cascadeOptions,\n    populate: populate,\n  };\n  const key = Repository.key(PersistenceKeys.MANY_TO_ONE);\n  return Decoration.for(key)\n    .define(\n      prop(PersistenceKeys.RELATIONS),\n      type([clazz.name, String.name, Number.name, BigInt.name]),\n      // onCreate(oneToManyOnCreate, metadata),\n      // onUpdate(oneToManyOnUpdate, metadata),\n      // onDelete(oneToManyOnDelete, metadata),\n      // afterAny(pop, metadata),\n      propMetadata(key, metadata)\n    )\n    .apply();\n}\n/**\n * @description Defines a many-to-one relationship between models\n * @summary Decorator that establishes a many-to-one relationship between multiple instances of the current model and another model\n * @template M - The related model type extending Model\n * @param {Constructor<M>} clazz - The constructor of the related model class\n * @param {CascadeMetadata} [cascadeOptions=DefaultCascade] - Options for cascading operations (create, update, delete)\n * @param {boolean} [populate=true] - If true, automatically populates the relationship when the model is retrieved\n * @return {Function} A decorator function that can be applied to a class property\n * @function manyToOne\n * @category Property Decorators\n * @example\n * ```typescript\n * class Book extends BaseModel {\n *   @required()\n *   title!: string;\n *\n *   @manyToOne(Author)\n *   author!: string | Author;\n * }\n *\n * class Author extends BaseModel {\n *   @required()\n *   name!: string;\n * }\n * ```\n * @see oneToMany\n * @see oneToOne\n */\nexport function manyToMany<M extends Model>(\n  clazz: Constructor<M>,\n  cascadeOptions: CascadeMetadata = DefaultCascade,\n  populate = true\n) {\n  Model.register(clazz);\n  const metadata: RelationsMetadata = {\n    class: clazz.name,\n    cascade: cascadeOptions,\n    populate: populate,\n  };\n  const key = Repository.key(PersistenceKeys.MANY_TO_ONE);\n  return Decoration.for(key)\n    .define(\n      prop(PersistenceKeys.RELATIONS),\n      type([clazz.name, String.name, Number.name, BigInt.name]),\n      // onCreate(oneToManyOnCreate, metadata),\n      // onUpdate(oneToManyOnUpdate, metadata),\n      // onDelete(oneToManyOnDelete, metadata),\n      // afterAll(populate, metadata),\n      propMetadata(key, metadata)\n    )\n    .apply();\n}\n"]}