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/**
* Repository is supposed to work with your entity objects. Find entities, insert, update, delete, etc.
*/
export class Repository {
// -------------------------------------------------------------------------
// Accessors
// -------------------------------------------------------------------------
/**
* Entity metadata of the entity current repository manages.
*/
get metadata() {
return this.manager.connection.getMetadata(this.target);
}
// -------------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------------
constructor(target, manager, queryRunner) {
this.target = target;
this.manager = manager;
this.queryRunner = queryRunner;
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Creates a new query builder that can be used to build a SQL query.
*/
createQueryBuilder(alias, queryRunner) {
return this.manager.createQueryBuilder(this.metadata.target, alias || this.metadata.targetName, queryRunner || this.queryRunner);
}
/**
* Checks if entity has an id.
* If entity composite compose ids, it will check them all.
*/
hasId(entity) {
return this.manager.hasId(this.metadata.target, entity);
}
/**
* Gets entity mixed id.
*/
getId(entity) {
return this.manager.getId(this.metadata.target, entity);
}
/**
* Creates a new entity instance or instances.
* Can copy properties from the given object into new entities.
*/
create(plainEntityLikeOrPlainEntityLikes) {
return this.manager.create(this.metadata.target, plainEntityLikeOrPlainEntityLikes);
}
/**
* Merges multiple entities (or entity-like objects) into a given entity.
*/
merge(mergeIntoEntity, ...entityLikes) {
return this.manager.merge(this.metadata.target, mergeIntoEntity, ...entityLikes);
}
/**
* Creates a new entity from the given plain javascript object. If entity already exist in the database, then
* it loads it (and everything related to it), replaces all values with the new ones from the given object
* and returns this new entity. This new entity is actually a loaded from the db entity with all properties
* replaced from the new object.
*
* Note that given entity-like object must have an entity id / primary key to find entity by.
* Returns undefined if entity with given id was not found.
*/
preload(entityLike) {
return this.manager.preload(this.metadata.target, entityLike);
}
/**
* Saves one or many given entities.
*/
save(entityOrEntities, options) {
return this.manager.save(this.metadata.target, entityOrEntities, options);
}
/**
* Removes one or many given entities.
*/
remove(entityOrEntities, options) {
return this.manager.remove(this.metadata.target, entityOrEntities, options);
}
/**
* Records the delete date of one or many given entities.
*/
softRemove(entityOrEntities, options) {
return this.manager.softRemove(this.metadata.target, entityOrEntities, options);
}
/**
* Recovers one or many given entities.
*/
recover(entityOrEntities, options) {
return this.manager.recover(this.metadata.target, entityOrEntities, options);
}
/**
* Inserts a given entity into the database.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient INSERT query.
* Does not check if entity exist in the database, so query will fail if duplicate entity is being inserted.
*/
insert(entity) {
return this.manager.insert(this.metadata.target, entity);
}
/**
* Updates entity partially. Entity can be found by a given conditions.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient UPDATE query.
* Does not check if entity exist in the database.
*/
update(criteria, partialEntity) {
return this.manager.update(this.metadata.target, criteria, partialEntity);
}
/**
* Inserts a given entity into the database, unless a unique constraint conflicts then updates the entity
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient INSERT ... ON CONFLICT DO UPDATE/ON DUPLICATE KEY UPDATE query.
*/
upsert(entityOrEntities, conflictPathsOrOptions) {
return this.manager.upsert(this.metadata.target, entityOrEntities, conflictPathsOrOptions);
}
/**
* Deletes entities by a given criteria.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient DELETE query.
* Does not check if entity exist in the database.
*/
delete(criteria) {
return this.manager.delete(this.metadata.target, criteria);
}
/**
* Records the delete date of entities by a given criteria.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient SOFT-DELETE query.
* Does not check if entity exist in the database.
*/
softDelete(criteria) {
return this.manager.softDelete(this.metadata.target, criteria);
}
/**
* Restores entities by a given criteria.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient SOFT-DELETE query.
* Does not check if entity exist in the database.
*/
restore(criteria) {
return this.manager.restore(this.metadata.target, criteria);
}
/**
* Checks whether any entity exists that matches the given options.
*
* @deprecated use `exists` method instead, for example:
*
* .exists()
*/
exist(options) {
return this.manager.exists(this.metadata.target, options);
}
/**
* Checks whether any entity exists that matches the given options.
*/
exists(options) {
return this.manager.exists(this.metadata.target, options);
}
/**
* Checks whether any entity exists that matches the given conditions.
*/
existsBy(where) {
return this.manager.existsBy(this.metadata.target, where);
}
/**
* Counts entities that match given options.
* Useful for pagination.
*/
count(options) {
return this.manager.count(this.metadata.target, options);
}
/**
* Counts entities that match given conditions.
* Useful for pagination.
*/
countBy(where) {
return this.manager.countBy(this.metadata.target, where);
}
/**
* Return the SUM of a column
*/
sum(columnName, where) {
return this.manager.sum(this.metadata.target, columnName, where);
}
/**
* Return the AVG of a column
*/
average(columnName, where) {
return this.manager.average(this.metadata.target, columnName, where);
}
/**
* Return the MIN of a column
*/
minimum(columnName, where) {
return this.manager.minimum(this.metadata.target, columnName, where);
}
/**
* Return the MAX of a column
*/
maximum(columnName, where) {
return this.manager.maximum(this.metadata.target, columnName, where);
}
/**
* Finds entities that match given find options.
*/
async find(options) {
return this.manager.find(this.metadata.target, options);
}
/**
* Finds entities that match given find options.
*/
async findBy(where) {
return this.manager.findBy(this.metadata.target, where);
}
/**
* Finds entities that match given find options.
* Also counts all entities that match given conditions,
* but ignores pagination settings (from and take options).
*/
findAndCount(options) {
return this.manager.findAndCount(this.metadata.target, options);
}
/**
* Finds entities that match given WHERE conditions.
* Also counts all entities that match given conditions,
* but ignores pagination settings (from and take options).
*/
findAndCountBy(where) {
return this.manager.findAndCountBy(this.metadata.target, where);
}
/**
* Finds entities with ids.
* Optionally find options or conditions can be applied.
*
* @deprecated use `findBy` method instead in conjunction with `In` operator, for example:
*
* .findBy({
* id: In([1, 2, 3])
* })
*/
async findByIds(ids) {
return this.manager.findByIds(this.metadata.target, ids);
}
/**
* Finds first entity by a given find options.
* If entity was not found in the database - returns null.
*/
async findOne(options) {
return this.manager.findOne(this.metadata.target, options);
}
/**
* Finds first entity that matches given where condition.
* If entity was not found in the database - returns null.
*/
async findOneBy(where) {
return this.manager.findOneBy(this.metadata.target, where);
}
/**
* Finds first entity that matches given id.
* If entity was not found in the database - returns null.
*
* @deprecated use `findOneBy` method instead in conjunction with `In` operator, for example:
*
* .findOneBy({
* id: 1 // where "id" is your primary column name
* })
*/
async findOneById(id) {
return this.manager.findOneById(this.metadata.target, id);
}
/**
* Finds first entity by a given find options.
* If entity was not found in the database - rejects with error.
*/
async findOneOrFail(options) {
return this.manager.findOneOrFail(this.metadata.target, options);
}
/**
* Finds first entity that matches given where condition.
* If entity was not found in the database - rejects with error.
*/
async findOneByOrFail(where) {
return this.manager.findOneByOrFail(this.metadata.target, where);
}
/**
* Executes a raw SQL query and returns a raw database results.
* Raw query execution is supported only by relational databases (MongoDB is not supported).
*/
query(query, parameters) {
return this.manager.query(query, parameters);
}
/**
* Clears all the data from the given table/collection (truncates/drops it).
*
* Note: this method uses TRUNCATE and may not work as you expect in transactions on some platforms.
* @see https://stackoverflow.com/a/5972738/925151
*/
clear() {
return this.manager.clear(this.metadata.target);
}
/**
* Increments some column by provided value of the entities matched given conditions.
*/
increment(conditions, propertyPath, value) {
return this.manager.increment(this.metadata.target, conditions, propertyPath, value);
}
/**
* Decrements some column by provided value of the entities matched given conditions.
*/
decrement(conditions, propertyPath, value) {
return this.manager.decrement(this.metadata.target, conditions, propertyPath, value);
}
/**
* Extends repository with provided functions.
*/
extend(customs) {
// return {
// ...this,
// ...custom
// };
const thisRepo = this.constructor;
const { target, manager, queryRunner } = this;
const ChildClass = class extends thisRepo {
constructor(target, manager, queryRunner) {
super(target, manager, queryRunner);
}
};
for (const custom in customs)
ChildClass.prototype[custom] = customs[custom];
return new ChildClass(target, manager, queryRunner);
}
}
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