@tanstack/db/dist/cjs/query/builder/index.cjs.map

A reactive client store for building super fast apps on sync

{"version":3,"file":"index.cjs","sources":["../../../../src/query/builder/index.ts"],"sourcesContent":["import { CollectionImpl } from '../../collection/index.js'\nimport {\n  Aggregate as AggregateExpr,\n  CollectionRef,\n  Func as FuncExpr,\n  PropRef,\n  QueryRef,\n  Value as ValueExpr,\n  isExpressionLike,\n} from '../ir.js'\nimport {\n  InvalidSourceError,\n  InvalidSourceTypeError,\n  JoinConditionMustBeEqualityError,\n  OnlyOneSourceAllowedError,\n  QueryMustHaveFromClauseError,\n  SubQueryMustHaveFromClauseError,\n} from '../../errors.js'\nimport { createRefProxy, toExpression } from './ref-proxy.js'\nimport type { NamespacedRow, SingleResult } from '../../types.js'\nimport type {\n  Aggregate,\n  BasicExpression,\n  JoinClause,\n  OrderBy,\n  OrderByDirection,\n  QueryIR,\n} from '../ir.js'\nimport type {\n  CompareOptions,\n  Context,\n  GroupByCallback,\n  JoinOnCallback,\n  MergeContextForJoinCallback,\n  MergeContextWithJoinType,\n  OrderByCallback,\n  OrderByOptions,\n  RefsForContext,\n  ResultTypeFromSelect,\n  SchemaFromSource,\n  SelectObject,\n  Source,\n  WhereCallback,\n  WithResult,\n} from './types.js'\n\nexport class BaseQueryBuilder<TContext extends Context = Context> {\n  private readonly query: Partial<QueryIR> = {}\n\n  constructor(query: Partial<QueryIR> = {}) {\n    this.query = { ...query }\n  }\n\n  /**\n   * Creates a CollectionRef or QueryRef from a source object\n   * @param source - An object with a single key-value pair\n   * @param context - Context string for error messages (e.g., \"from clause\", \"join clause\")\n   * @returns A tuple of [alias, ref] where alias is the source key and ref is the created reference\n   */\n  private _createRefForSource<TSource extends Source>(\n    source: TSource,\n    context: string,\n  ): [string, CollectionRef | QueryRef] {\n    // Validate source is a plain object (not null, array, string, etc.)\n    // We use try-catch to handle null/undefined gracefully\n    let keys: Array<string>\n    try {\n      keys = Object.keys(source)\n    } catch {\n      // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition\n      const type = source === null ? `null` : `undefined`\n      throw new InvalidSourceTypeError(context, type)\n    }\n\n    // Check if it's an array (arrays pass Object.keys but aren't valid sources)\n    if (Array.isArray(source)) {\n      throw new InvalidSourceTypeError(context, `array`)\n    }\n\n    // Validate exactly one key\n    if (keys.length !== 1) {\n      if (keys.length === 0) {\n        throw new InvalidSourceTypeError(context, `empty object`)\n      }\n      // Check if it looks like a string was passed (has numeric keys)\n      if (keys.every((k) => !isNaN(Number(k)))) {\n        throw new InvalidSourceTypeError(context, `string`)\n      }\n      throw new OnlyOneSourceAllowedError(context)\n    }\n\n    const alias = keys[0]!\n    const sourceValue = source[alias]\n\n    // Validate the value is a Collection or QueryBuilder\n    let ref: CollectionRef | QueryRef\n\n    if (sourceValue instanceof CollectionImpl) {\n      ref = new CollectionRef(sourceValue, alias)\n    } else if (sourceValue instanceof BaseQueryBuilder) {\n      const subQuery = sourceValue._getQuery()\n      if (!(subQuery as Partial<QueryIR>).from) {\n        throw new SubQueryMustHaveFromClauseError(context)\n      }\n      ref = new QueryRef(subQuery, alias)\n    } else {\n      throw new InvalidSourceError(alias)\n    }\n\n    return [alias, ref]\n  }\n\n  /**\n   * Specify the source table or subquery for the query\n   *\n   * @param source - An object with a single key-value pair where the key is the table alias and the value is a Collection or subquery\n   * @returns A QueryBuilder with the specified source\n   *\n   * @example\n   * ```ts\n   * // Query from a collection\n   * query.from({ users: usersCollection })\n   *\n   * // Query from a subquery\n   * const activeUsers = query.from({ u: usersCollection }).where(({u}) => u.active)\n   * query.from({ activeUsers })\n   * ```\n   */\n  from<TSource extends Source>(\n    source: TSource,\n  ): QueryBuilder<{\n    baseSchema: SchemaFromSource<TSource>\n    schema: SchemaFromSource<TSource>\n    fromSourceName: keyof TSource & string\n    hasJoins: false\n  }> {\n    const [, from] = this._createRefForSource(source, `from clause`)\n\n    return new BaseQueryBuilder({\n      ...this.query,\n      from,\n    }) as any\n  }\n\n  /**\n   * Join another table or subquery to the current query\n   *\n   * @param source - An object with a single key-value pair where the key is the table alias and the value is a Collection or subquery\n   * @param onCallback - A function that receives table references and returns the join condition\n   * @param type - The type of join: 'inner', 'left', 'right', or 'full' (defaults to 'left')\n   * @returns A QueryBuilder with the joined table available\n   *\n   * @example\n   * ```ts\n   * // Left join users with posts\n   * query\n   *   .from({ users: usersCollection })\n   *   .join({ posts: postsCollection }, ({users, posts}) => eq(users.id, posts.userId))\n   *\n   * // Inner join with explicit type\n   * query\n   *   .from({ u: usersCollection })\n   *   .join({ p: postsCollection }, ({u, p}) => eq(u.id, p.userId), 'inner')\n   * ```\n   *\n   * // Join with a subquery\n   * const activeUsers = query.from({ u: usersCollection }).where(({u}) => u.active)\n   * query\n   *   .from({ activeUsers })\n   *   .join({ p: postsCollection }, ({u, p}) => eq(u.id, p.userId))\n   */\n  join<\n    TSource extends Source,\n    TJoinType extends `inner` | `left` | `right` | `full` = `left`,\n  >(\n    source: TSource,\n    onCallback: JoinOnCallback<\n      MergeContextForJoinCallback<TContext, SchemaFromSource<TSource>>\n    >,\n    type: TJoinType = `left` as TJoinType,\n  ): QueryBuilder<\n    MergeContextWithJoinType<TContext, SchemaFromSource<TSource>, TJoinType>\n  > {\n    const [alias, from] = this._createRefForSource(source, `join clause`)\n\n    // Create a temporary context for the callback\n    const currentAliases = this._getCurrentAliases()\n    const newAliases = [...currentAliases, alias]\n    const refProxy = createRefProxy(newAliases) as RefsForContext<\n      MergeContextForJoinCallback<TContext, SchemaFromSource<TSource>>\n    >\n\n    // Get the join condition expression\n    const onExpression = onCallback(refProxy)\n\n    // Extract left and right from the expression\n    // For now, we'll assume it's an eq function with two arguments\n    let left: BasicExpression\n    let right: BasicExpression\n\n    if (\n      onExpression.type === `func` &&\n      onExpression.name === `eq` &&\n      onExpression.args.length === 2\n    ) {\n      left = onExpression.args[0]!\n      right = onExpression.args[1]!\n    } else {\n      throw new JoinConditionMustBeEqualityError()\n    }\n\n    const joinClause: JoinClause = {\n      from,\n      type,\n      left,\n      right,\n    }\n\n    const existingJoins = this.query.join || []\n\n    return new BaseQueryBuilder({\n      ...this.query,\n      join: [...existingJoins, joinClause],\n    }) as any\n  }\n\n  /**\n   * Perform a LEFT JOIN with another table or subquery\n   *\n   * @param source - An object with a single key-value pair where the key is the table alias and the value is a Collection or subquery\n   * @param onCallback - A function that receives table references and returns the join condition\n   * @returns A QueryBuilder with the left joined table available\n   *\n   * @example\n   * ```ts\n   * // Left join users with posts\n   * query\n   *   .from({ users: usersCollection })\n   *   .leftJoin({ posts: postsCollection }, ({users, posts}) => eq(users.id, posts.userId))\n   * ```\n   */\n  leftJoin<TSource extends Source>(\n    source: TSource,\n    onCallback: JoinOnCallback<\n      MergeContextForJoinCallback<TContext, SchemaFromSource<TSource>>\n    >,\n  ): QueryBuilder<\n    MergeContextWithJoinType<TContext, SchemaFromSource<TSource>, `left`>\n  > {\n    return this.join(source, onCallback, `left`)\n  }\n\n  /**\n   * Perform a RIGHT JOIN with another table or subquery\n   *\n   * @param source - An object with a single key-value pair where the key is the table alias and the value is a Collection or subquery\n   * @param onCallback - A function that receives table references and returns the join condition\n   * @returns A QueryBuilder with the right joined table available\n   *\n   * @example\n   * ```ts\n   * // Right join users with posts\n   * query\n   *   .from({ users: usersCollection })\n   *   .rightJoin({ posts: postsCollection }, ({users, posts}) => eq(users.id, posts.userId))\n   * ```\n   */\n  rightJoin<TSource extends Source>(\n    source: TSource,\n    onCallback: JoinOnCallback<\n      MergeContextForJoinCallback<TContext, SchemaFromSource<TSource>>\n    >,\n  ): QueryBuilder<\n    MergeContextWithJoinType<TContext, SchemaFromSource<TSource>, `right`>\n  > {\n    return this.join(source, onCallback, `right`)\n  }\n\n  /**\n   * Perform an INNER JOIN with another table or subquery\n   *\n   * @param source - An object with a single key-value pair where the key is the table alias and the value is a Collection or subquery\n   * @param onCallback - A function that receives table references and returns the join condition\n   * @returns A QueryBuilder with the inner joined table available\n   *\n   * @example\n   * ```ts\n   * // Inner join users with posts\n   * query\n   *   .from({ users: usersCollection })\n   *   .innerJoin({ posts: postsCollection }, ({users, posts}) => eq(users.id, posts.userId))\n   * ```\n   */\n  innerJoin<TSource extends Source>(\n    source: TSource,\n    onCallback: JoinOnCallback<\n      MergeContextForJoinCallback<TContext, SchemaFromSource<TSource>>\n    >,\n  ): QueryBuilder<\n    MergeContextWithJoinType<TContext, SchemaFromSource<TSource>, `inner`>\n  > {\n    return this.join(source, onCallback, `inner`)\n  }\n\n  /**\n   * Perform a FULL JOIN with another table or subquery\n   *\n   * @param source - An object with a single key-value pair where the key is the table alias and the value is a Collection or subquery\n   * @param onCallback - A function that receives table references and returns the join condition\n   * @returns A QueryBuilder with the full joined table available\n   *\n   * @example\n   * ```ts\n   * // Full join users with posts\n   * query\n   *   .from({ users: usersCollection })\n   *   .fullJoin({ posts: postsCollection }, ({users, posts}) => eq(users.id, posts.userId))\n   * ```\n   */\n  fullJoin<TSource extends Source>(\n    source: TSource,\n    onCallback: JoinOnCallback<\n      MergeContextForJoinCallback<TContext, SchemaFromSource<TSource>>\n    >,\n  ): QueryBuilder<\n    MergeContextWithJoinType<TContext, SchemaFromSource<TSource>, `full`>\n  > {\n    return this.join(source, onCallback, `full`)\n  }\n\n  /**\n   * Filter rows based on a condition\n   *\n   * @param callback - A function that receives table references and returns an expression\n   * @returns A QueryBuilder with the where condition applied\n   *\n   * @example\n   * ```ts\n   * // Simple condition\n   * query\n   *   .from({ users: usersCollection })\n   *   .where(({users}) => gt(users.age, 18))\n   *\n   * // Multiple conditions\n   * query\n   *   .from({ users: usersCollection })\n   *   .where(({users}) => and(\n   *     gt(users.age, 18),\n   *     eq(users.active, true)\n   *   ))\n   *\n   * // Multiple where calls are ANDed together\n   * query\n   *   .from({ users: usersCollection })\n   *   .where(({users}) => gt(users.age, 18))\n   *   .where(({users}) => eq(users.active, true))\n   * ```\n   */\n  where(callback: WhereCallback<TContext>): QueryBuilder<TContext> {\n    const aliases = this._getCurrentAliases()\n    const refProxy = createRefProxy(aliases) as RefsForContext<TContext>\n    const expression = callback(refProxy)\n\n    const existingWhere = this.query.where || []\n\n    return new BaseQueryBuilder({\n      ...this.query,\n      where: [...existingWhere, expression],\n    }) as any\n  }\n\n  /**\n   * Filter grouped rows based on aggregate conditions\n   *\n   * @param callback - A function that receives table references and returns an expression\n   * @returns A QueryBuilder with the having condition applied\n   *\n   * @example\n   * ```ts\n   * // Filter groups by count\n   * query\n   *   .from({ posts: postsCollection })\n   *   .groupBy(({posts}) => posts.userId)\n   *   .having(({posts}) => gt(count(posts.id), 5))\n   *\n   * // Filter by average\n   * query\n   *   .from({ orders: ordersCollection })\n   *   .groupBy(({orders}) => orders.customerId)\n   *   .having(({orders}) => gt(avg(orders.total), 100))\n   *\n   * // Multiple having calls are ANDed together\n   * query\n   *   .from({ orders: ordersCollection })\n   *   .groupBy(({orders}) => orders.customerId)\n   *   .having(({orders}) => gt(count(orders.id), 5))\n   *   .having(({orders}) => gt(avg(orders.total), 100))\n   * ```\n   */\n  having(callback: WhereCallback<TContext>): QueryBuilder<TContext> {\n    const aliases = this._getCurrentAliases()\n    const refProxy = createRefProxy(aliases) as RefsForContext<TContext>\n    const expression = callback(refProxy)\n\n    const existingHaving = this.query.having || []\n\n    return new BaseQueryBuilder({\n      ...this.query,\n      having: [...existingHaving, expression],\n    }) as any\n  }\n\n  /**\n   * Select specific columns or computed values from the query\n   *\n   * @param callback - A function that receives table references and returns an object with selected fields or expressions\n   * @returns A QueryBuilder that returns only the selected fields\n   *\n   * @example\n   * ```ts\n   * // Select specific columns\n   * query\n   *   .from({ users: usersCollection })\n   *   .select(({users}) => ({\n   *     name: users.name,\n   *     email: users.email\n   *   }))\n   *\n   * // Select with computed values\n   * query\n   *   .from({ users: usersCollection })\n   *   .select(({users}) => ({\n   *     fullName: concat(users.firstName, ' ', users.lastName),\n   *     ageInMonths: mul(users.age, 12)\n   *   }))\n   *\n   * // Select with aggregates (requires GROUP BY)\n   * query\n   *   .from({ posts: postsCollection })\n   *   .groupBy(({posts}) => posts.userId)\n   *   .select(({posts, count}) => ({\n   *     userId: posts.userId,\n   *     postCount: count(posts.id)\n   *   }))\n   * ```\n   */\n  select<TSelectObject extends SelectObject>(\n    callback: (refs: RefsForContext<TContext>) => TSelectObject,\n  ): QueryBuilder<WithResult<TContext, ResultTypeFromSelect<TSelectObject>>> {\n    const aliases = this._getCurrentAliases()\n    const refProxy = createRefProxy(aliases) as RefsForContext<TContext>\n    const selectObject = callback(refProxy)\n    const select = buildNestedSelect(selectObject)\n\n    return new BaseQueryBuilder({\n      ...this.query,\n      select: select,\n      fnSelect: undefined, // remove the fnSelect clause if it exists\n    }) as any\n  }\n\n  /**\n   * Sort the query results by one or more columns\n   *\n   * @param callback - A function that receives table references and returns the field to sort by\n   * @param direction - Sort direction: 'asc' for ascending, 'desc' for descending (defaults to 'asc')\n   * @returns A QueryBuilder with the ordering applied\n   *\n   * @example\n   * ```ts\n   * // Sort by a single column\n   * query\n   *   .from({ users: usersCollection })\n   *   .orderBy(({users}) => users.name)\n   *\n   * // Sort descending\n   * query\n   *   .from({ users: usersCollection })\n   *   .orderBy(({users}) => users.createdAt, 'desc')\n   *\n   * // Multiple sorts (chain orderBy calls)\n   * query\n   *   .from({ users: usersCollection })\n   *   .orderBy(({users}) => users.lastName)\n   *   .orderBy(({users}) => users.firstName)\n   * ```\n   */\n  orderBy(\n    callback: OrderByCallback<TContext>,\n    options: OrderByDirection | OrderByOptions = `asc`,\n  ): QueryBuilder<TContext> {\n    const aliases = this._getCurrentAliases()\n    const refProxy = createRefProxy(aliases) as RefsForContext<TContext>\n    const result = callback(refProxy)\n\n    const opts: CompareOptions =\n      typeof options === `string`\n        ? { direction: options, nulls: `first` }\n        : {\n            direction: options.direction ?? `asc`,\n            nulls: options.nulls ?? `first`,\n            stringSort: options.stringSort,\n            locale:\n              options.stringSort === `locale` ? options.locale : undefined,\n            localeOptions:\n              options.stringSort === `locale`\n                ? options.localeOptions\n                : undefined,\n          }\n\n    const makeOrderByClause = (res: any) => {\n      return {\n        expression: toExpression(res),\n        compareOptions: opts,\n      }\n    }\n\n    // Create the new OrderBy structure with expression and direction\n    const orderByClauses = Array.isArray(result)\n      ? result.map((r) => makeOrderByClause(r))\n      : [makeOrderByClause(result)]\n\n    const existingOrderBy: OrderBy = this.query.orderBy || []\n\n    return new BaseQueryBuilder({\n      ...this.query,\n      orderBy: [...existingOrderBy, ...orderByClauses],\n    }) as any\n  }\n\n  /**\n   * Group rows by one or more columns for aggregation\n   *\n   * @param callback - A function that receives table references and returns the field(s) to group by\n   * @returns A QueryBuilder with grouping applied (enables aggregate functions in SELECT and HAVING)\n   *\n   * @example\n   * ```ts\n   * // Group by a single column\n   * query\n   *   .from({ posts: postsCollection })\n   *   .groupBy(({posts}) => posts.userId)\n   *   .select(({posts, count}) => ({\n   *     userId: posts.userId,\n   *     postCount: count()\n   *   }))\n   *\n   * // Group by multiple columns\n   * query\n   *   .from({ sales: salesCollection })\n   *   .groupBy(({sales}) => [sales.region, sales.category])\n   *   .select(({sales, sum}) => ({\n   *     region: sales.region,\n   *     category: sales.category,\n   *     totalSales: sum(sales.amount)\n   *   }))\n   * ```\n   */\n  groupBy(callback: GroupByCallback<TContext>): QueryBuilder<TContext> {\n    const aliases = this._getCurrentAliases()\n    const refProxy = createRefProxy(aliases) as RefsForContext<TContext>\n    const result = callback(refProxy)\n\n    const newExpressions = Array.isArray(result)\n      ? result.map((r) => toExpression(r))\n      : [toExpression(result)]\n\n    // Extend existing groupBy expressions (multiple groupBy calls should accumulate)\n    const existingGroupBy = this.query.groupBy || []\n    return new BaseQueryBuilder({\n      ...this.query,\n      groupBy: [...existingGroupBy, ...newExpressions],\n    }) as any\n  }\n\n  /**\n   * Limit the number of rows returned by the query\n   * `orderBy` is required for `limit`\n   *\n   * @param count - Maximum number of rows to return\n   * @returns A QueryBuilder with the limit applied\n   *\n   * @example\n   * ```ts\n   * // Get top 5 posts by likes\n   * query\n   *   .from({ posts: postsCollection })\n   *   .orderBy(({posts}) => posts.likes, 'desc')\n   *   .limit(5)\n   * ```\n   */\n  limit(count: number): QueryBuilder<TContext> {\n    return new BaseQueryBuilder({\n      ...this.query,\n      limit: count,\n    }) as any\n  }\n\n  /**\n   * Skip a number of rows before returning results\n   * `orderBy` is required for `offset`\n   *\n   * @param count - Number of rows to skip\n   * @returns A QueryBuilder with the offset applied\n   *\n   * @example\n   * ```ts\n   * // Get second page of results\n   * query\n   *   .from({ posts: postsCollection })\n   *   .orderBy(({posts}) => posts.createdAt, 'desc')\n   *   .offset(page * pageSize)\n   *   .limit(pageSize)\n   * ```\n   */\n  offset(count: number): QueryBuilder<TContext> {\n    return new BaseQueryBuilder({\n      ...this.query,\n      offset: count,\n    }) as any\n  }\n\n  /**\n   * Specify that the query should return distinct rows.\n   * Deduplicates rows based on the selected columns.\n   * @returns A QueryBuilder with distinct enabled\n   *\n   * @example\n   * ```ts\n   * // Get countries our users are from\n   * query\n   *   .from({ users: usersCollection })\n   *   .select(({users}) => users.country)\n   *   .distinct()\n   * ```\n   */\n  distinct(): QueryBuilder<TContext> {\n    return new BaseQueryBuilder({\n      ...this.query,\n      distinct: true,\n    }) as any\n  }\n\n  /**\n   * Specify that the query should return a single result\n   * @returns A QueryBuilder that returns the first result\n   *\n   * @example\n   * ```ts\n   * // Get the user matching the query\n   * query\n   *   .from({ users: usersCollection })\n   *   .where(({users}) => eq(users.id, 1))\n   *   .findOne()\n   *```\n   */\n  findOne(): QueryBuilder<TContext & SingleResult> {\n    return new BaseQueryBuilder({\n      ...this.query,\n      // TODO: enforcing return only one result with also a default orderBy if none is specified\n      // limit: 1,\n      singleResult: true,\n    })\n  }\n\n  // Helper methods\n  private _getCurrentAliases(): Array<string> {\n    const aliases: Array<string> = []\n\n    // Add the from alias\n    if (this.query.from) {\n      aliases.push(this.query.from.alias)\n    }\n\n    // Add join aliases\n    if (this.query.join) {\n      for (const join of this.query.join) {\n        aliases.push(join.from.alias)\n      }\n    }\n\n    return aliases\n  }\n\n  /**\n   * Functional variants of the query builder\n   * These are imperative function that are called for ery row.\n   * Warning: that these cannot be optimized by the query compiler, and may prevent\n   * some type of optimizations being possible.\n   * @example\n   * ```ts\n   * q.fn.select((row) => ({\n   *   name: row.user.name.toUpperCase(),\n   *   age: row.user.age + 1,\n   * }))\n   * ```\n   */\n  get fn() {\n    const builder = this\n    return {\n      /**\n       * Select fields using a function that operates on each row\n       * Warning: This cannot be optimized by the query compiler\n       *\n       * @param callback - A function that receives a row and returns the selected value\n       * @returns A QueryBuilder with functional selection applied\n       *\n       * @example\n       * ```ts\n       * // Functional select (not optimized)\n       * query\n       *   .from({ users: usersCollection })\n       *   .fn.select(row => ({\n       *     name: row.users.name.toUpperCase(),\n       *     age: row.users.age + 1,\n       *   }))\n       * ```\n       */\n      select<TFuncSelectResult>(\n        callback: (row: TContext[`schema`]) => TFuncSelectResult,\n      ): QueryBuilder<WithResult<TContext, TFuncSelectResult>> {\n        return new BaseQueryBuilder({\n          ...builder.query,\n          select: undefined, // remove the select clause if it exists\n          fnSelect: callback,\n        })\n      },\n      /**\n       * Filter rows using a function that operates on each row\n       * Warning: This cannot be optimized by the query compiler\n       *\n       * @param callback - A function that receives a row and returns a boolean\n       * @returns A QueryBuilder with functional filtering applied\n       *\n       * @example\n       * ```ts\n       * // Functional where (not optimized)\n       * query\n       *   .from({ users: usersCollection })\n       *   .fn.where(row => row.users.name.startsWith('A'))\n       * ```\n       */\n      where(\n        callback: (row: TContext[`schema`]) => any,\n      ): QueryBuilder<TContext> {\n        return new BaseQueryBuilder({\n          ...builder.query,\n          fnWhere: [\n            ...(builder.query.fnWhere || []),\n            callback as (row: NamespacedRow) => any,\n          ],\n        })\n      },\n      /**\n       * Filter grouped rows using a function that operates on each aggregated row\n       * Warning: This cannot be optimized by the query compiler\n       *\n       * @param callback - 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