---
meta:
 - name: keywords
   description: api typescript node.js documentation JsonPropertyStore class
---
# JsonPropertyStore - @tsed/schema

## Usage

```typescript
import { JsonPropertyStore } from "@tsed/schema";
```

> See [/packages/specs/schema/src/domain/JsonPropertyStore.ts](https://github.com/tsedio/tsed/blob/v8.27.0/packages/specs/schema/src/domain/JsonPropertyStore.ts#L0-L0).

## Overview

```ts
class JsonPropertyStore extends JsonEntityStore {
    readonly parent: JsonClassStore;
    static get(target: Type<any>, propertyKey: string | symbol): JsonPropertyStore;
    protected build(): void;
}
```

<!-- Description -->

## Description

Store for property metadata and schema information.

JsonPropertyStore manages metadata for class properties decorated with schema decorators
like `@Property()`, `@Required()`, `@MinLength()`, etc. It handles schema generation,
type resolution, and integration with the parent class schema.

### Responsibilities

-   **Schema Generation**: Creates and maintains the JsonSchema for the property
-   **Type Resolution**: Resolves property types including primitives, classes, and collections
-   **Parent Integration**: Registers the property schema with the parent class schema
-   **Collection Handling**: Special handling for arrays, Sets, Maps, and other collections

### Usage

```typescript
// Get property store
const propertyStore = JsonPropertyStore.get(MyClass, "propertyName");

// Access property schema
const schema = propertyStore.schema;

// Check property type
const type = propertyStore.type;
const isCollection = propertyStore.isCollection;
```

### Schema Integration

When a property is decorated, this store:

1.  Resolves the property's TypeScript type
2.  Creates an appropriate JsonSchema
3.  Registers it in the parent class's `properties` object
4.  Handles collection item schemas for arrays/collections

### Type Handling

-   **Primitives**: Creates schema with appropriate type (string, number, boolean, etc.)
-   **Classes**: Creates object schema with reference to the class schema
-   **Collections**: Creates array schema with item type schema

<!-- Members -->

## readonly parent

```ts
readonly parent: JsonClassStore;
```

## static get

```ts
static get(target: Type<any>, propertyKey: string | symbol): JsonPropertyStore;
```

## protected build

```ts
protected build(): void;
```