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| 1 | +import { z } from 'zod'; |
| 2 | + |
| 3 | +/** |
| 4 | + * Filter Operator Enum |
| 5 | + * Standard SQL/NoSQL operators supported by the engine. |
| 6 | + */ |
| 7 | +export const FilterOperator = z.enum([ |
| 8 | + '=', '!=', '<>', |
| 9 | + '>', '>=', '<', '<=', |
| 10 | + 'startswith', 'contains', 'notcontains', |
| 11 | + 'between', 'in', 'notin', |
| 12 | + 'is_null', 'is_not_null' |
| 13 | +]); |
| 14 | + |
| 15 | +/** |
| 16 | + * Filter Logic Operator |
| 17 | + */ |
| 18 | +export const LogicOperator = z.enum(['and', 'or', 'not']); |
| 19 | + |
| 20 | +/** |
| 21 | + * Recursive Filter Node |
| 22 | + * Represents the "Where" clause. |
| 23 | + * |
| 24 | + * Structure: [Field, Operator, Value] OR [Logic, Filter, Filter...] |
| 25 | + * Examples: |
| 26 | + * - Simple: ["amount", ">", 1000] |
| 27 | + * - Logic: [["status", "=", "closed"], "or", ["amount", ">", 1000]] |
| 28 | + */ |
| 29 | +export const FilterNodeSchema: z.ZodType<any> = z.lazy(() => |
| 30 | + z.union([ |
| 31 | + // Leaf Node: [Field, Operator, Value] |
| 32 | + z.tuple([z.string(), FilterOperator, z.any()]), |
| 33 | + |
| 34 | + // Logic Node: [Expression, "or", Expression] |
| 35 | + z.array(z.union([z.string(), FilterNodeSchema])) |
| 36 | + ]) |
| 37 | +); |
| 38 | + |
| 39 | +/** |
| 40 | + * Sort Node |
| 41 | + * Represents "Order By". |
| 42 | + */ |
| 43 | +export const SortNodeSchema = z.object({ |
| 44 | + field: z.string(), |
| 45 | + order: z.enum(['asc', 'desc']).default('asc') |
| 46 | +}); |
| 47 | + |
| 48 | +/** |
| 49 | + * Field Selection Node |
| 50 | + * Represents "Select" attributes, including joins. |
| 51 | + */ |
| 52 | +export const FieldNodeSchema: z.ZodType<any> = z.lazy(() => |
| 53 | + z.union([ |
| 54 | + z.string(), // Primitive field: "name" |
| 55 | + z.object({ |
| 56 | + field: z.string(), // Relationship field: "owner" |
| 57 | + fields: z.array(FieldNodeSchema).optional(), // Nested select: ["name", "email"] |
| 58 | + alias: z.string().optional() |
| 59 | + }) |
| 60 | + ]) |
| 61 | +); |
| 62 | + |
| 63 | +/** |
| 64 | + * Query AST Schema |
| 65 | + * The universal data retrieval contract defined in `ast-structure.mdx`. |
| 66 | + */ |
| 67 | +export const QuerySchema = z.object({ |
| 68 | + /** Target Entity */ |
| 69 | + object: z.string().describe('Object name (e.g. account)'), |
| 70 | + |
| 71 | + /** Select Clause */ |
| 72 | + fields: z.array(FieldNodeSchema).optional().describe('Fields to retrieve'), |
| 73 | + |
| 74 | + /** Where Clause */ |
| 75 | + filters: FilterNodeSchema.optional().describe('Filtering criteria'), |
| 76 | + |
| 77 | + /** Order By Clause */ |
| 78 | + sort: z.array(SortNodeSchema).optional().describe('Sorting instructions'), |
| 79 | + |
| 80 | + /** Pagination */ |
| 81 | + top: z.number().optional().describe('Limit results'), |
| 82 | + skip: z.number().optional().describe('Offset results'), |
| 83 | +}); |
| 84 | + |
| 85 | +export type QueryAST = z.infer<typeof QuerySchema>; |
| 86 | +export type FilterNode = z.infer<typeof FilterNodeSchema>; |
| 87 | +export type SortNode = z.infer<typeof SortNodeSchema>; |
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