Json To Graphql Schema Online


Convert any of your XML documents to JSON with a few clicks. API Evangelist. If it’s not present, we will download the schema again and store in the cache. Schemas and Types On this page, you'll learn all you need to know about the GraphQL type system and how it describes what data can be queried. As per the GraphQL syntax and the graph data model (GraphQL schema), the server processes and validates the GraphQL query. For optional fields, an additional field is generated with a suffix of _num added to the element name. Convert excel to Json using Excel To Json Converter. You now have a proper foundation to deploy your GraphQL server. • Colorized values, color depends of the value type. Of course, assuming that the connectivity between the physical dev workstation and the online IDE is available all the time and at a very low latency. JSON to XML Online with https and easiest way to convert JSON to XML. Tableau immediately reviews the file, infers a schema, and shows me the same levels we saw earlier with sample data! Now I can easily reason about my JSON file and pick which levels I want to use for analysis. to Rust Serde. I need to know about some of the newly introduced featured of Magento 2. • Change type of values. The assignment is saved and restored for the active document. The format of GraphQL queries are defined in the schema. When I infer the schema, I get String for the timestamp field. Apollo iOS requires a GraphQL schema file as input to the code generation process. JSON Schema JSON Schema [24] specifies a JSON-based format to define the structure of JSON data for validation, documentation, and interaction control. GraphQL Java Engine itself is only concerned with executing queries. This article will explain those to you, so you can focus on your business logic rather than configuration of your WCF services. However each API needs to return only a. Load form URL, Download, Save and Share. With express-graphql, you can just send an HTTP POST request to the endpoint you mounted your GraphQL server on, passing the GraphQL query as the query field in a JSON payload. This file is stored locally in isolated storage. There are also nice bindings for Relay and Rails. While building your product, you want to be able to explore your schema, discovering field names and testing out potential queries on live development data. Free Online JSON to JSON Schema Converter. GraphQL Queries - This allows the client to read and manipulate how the data should be received. You can use column formatting to customize how fields in SharePoint lists and libraries are displayed. To perform a query you need to have a root Query object that is an ObjectGraphType. With JSON, data is already represented as a Javascript object (again, widely understood by both Javascript and other languages), fewer bits are being passed across the wire, and less machine time is required to process data (on either end). There’s a simple way to make HTTP POST request with GraphQL query and get JSON back. Especially considering our use-case for UI <> API communication at Hexometer. It was hosted by Microsoft Corporation. A significant recent addition to GraphQL was SDL, its schema definition language. How to parse JSON with date field in Java - Jackson @JsonDeserialize Annotation Example I have read many articles on parsing JSON in Java and most of them give examples where properties are either String or int , there are very few examples, where you will see the JSON string contains a date field and that's one important thing to learn. HTML Minifier. This package can take in almost* any kind of JSON data and generate a valid GraphQL schema file, including custom types, lists, nullable and non-nullable fields, and deeply nested children. JSON Schema is used to validate JSON payloads and responses passed to and sent from the API. I have a JSON object which has many properties and multiple nested objects as properties. GraphQL can be used with any language. The Apollo Server constructor contains the ability to configure GraphQL Playground with the playground configuration option. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Strongly typed. Upload your. BSON also con­tains ex­ten­sions that al­low rep­res­ent­a­tion of data types that are not part of the JSON spec. JSON Schema. In this blog post, I’m telling you why we built it, how it works, and how you can try it. BSON is more "schema-less" than Proto­col Buf­fers, which can give it an ad. You might want to use this instead of JSON::Schema if you need to validate data against draft 4 of the specification. Where GraphQL most obviously falls short is its complexity. Deploy the server with up. GraphQL Schemas — Easier & Better Structure August 7th 2017 SchemaGlue. Converts GraphQL Schema Definition to JSONSchema. In addition to naming a field, you can provide a type that will determine how the data is encoded and sent over the wire - above we see an int32 type and a string type. org, wikipedia, google In JSON, they take on these forms. With many integrations with popular tech like AWS Lambda, Algolia, and Auth0, Graphcool looks. JSON file data source example. And then it occurred to us that the GraphQL schema is basically parallel to the JSON Schema -- it describes the document structure, field types, etc. This service can be either a web service or an AWS Lambda function. Some parts listed below are missing, but complete source code is available on GitHub. The script has to make some assumptions, so double-check the output! For an example, try converting JSON from the SmartyStreets API or the GitHub API. Product markup enables a badge on the image in mobile image search results, which can encourage more users to click your content. GraphQLEditor makes it easier to understand GrapHQL schemas. You don't necessarily have to adopt JSON, especially if you are adopting GraphQL after your API has already been designed and given a specified output format, but failure to adopt JSON can result in decreased efficiency and confusion amongst the user base. This is the basic array schema: { "type": "array" } This schema specifyies arrays and no other JSON. JSON Schema. GraphQL comes out stronger in some areas, REST in others, and sometimes they're both kinda terrible. LINQ to JSON is good for situations where you are only interested in getting values from JSON, you don't have a class to serialize or deserialize to, or the JSON is radically different from your class and you need to manually read and. Live preview of JSON sample data from JSON schema. 0, but the definitions object in OpenAPI is, in most respects, a valid JSON Schema. All communication between server and client is in JSON. To give your GraphQL schema full coverage you would have to repeat this process for every single query you use. But you don't need a complex client to call a GraphQL server. The source code is released under the license specified in file LICENSE. DESCRIPTION. Welcome to Dev Tools Online! Here you find a collection of online tools to format, transform, and generate data for defined formats. json 文件 & 相应的要用到该接口的 *. For all other fields in the schema we need to define default behavior that just transforms context JSON value in appropriate GraphQL representation. The schema and the query language are written using javascript strings. Clear, human- and machine-readable documentation. to JSON Schema. Using definitions internal to json schema and external to json schema (version – draft -04) For easy understading let’s go with simple schema above. Create a repository on GitHub (/)Create a db. You can provide arguments to a field. The GitHub GraphQL API v4 represents an architectural and conceptual shift from the GitHub REST API v3. JsonSchema from JSON. Graphql Schema Validation Online Posted on July 20, 2019 by admin A real life schema diff logo products change over time and with safely evolving schemas graphql endpoints can seamlessly evolve into the right shape of data product needs major use cases of mergeschemas. Supports JSON Schema Draft 3, Draft 4, Draft 6 and Draft 7. Select schema: Empty schema Schema Draft v7 Schema Draft v6 Schema Draft v4 Schema Draft v3. Welcome to Dev Tools Online! Here you find a collection of online tools to format, transform, and generate data for defined formats. The query language uses the curly bracket syntax to define a set of fields within an object (aka entity). Nuget provides a plug-in called JSON. There are also nice bindings for Relay and Rails. I can query the list of docs, create a new one, and remove by id. XMLSpy includes an enterprise-grade JSON Schema generator and graphical JSON schema editor that lets you create JSON Schemas, convert XSD to JSON Schema, generate JSON Schema, and even generate a JSON instance from a schema. NReco is a collection of reusable components for. NET Schema and has been tested with tens of thousands of user schemas. Remember, we're not using a database for this example. Here's an example of a single product page in JSON-LD using the Structured Data Testing Tool:. Best Practice - JSON to Avro, data type preserving. Most systems have no problems growing their data volume through their APIs once they acquired users. Get a full fake GraphQL API with zero coding in less than 30 seconds. The computer generates an XML schema based on the logical structure of the first JSON data. The Constant Contact v2 API supports the JavaScript Object Notation (JSON) data interchange format for communicating over the wire. Combining schemas¶. express-graphql: GraphQL HTTP Server Middleware; These three modules will allow us to connect to and query our SQLite database and map the data to our GraphQL schema. These days type systems are all the rage in APIs, and with gRPC and GraphQL fans touting their baked in systems. For GraphQL to be possible, we need to know a defined schema that explains the queries that are available as well as the types of data that we are working with. At this point you will to explore the schema. There are no ads, popups or nonsense, just a random JSON data creator. Whenever you open a JSON schema, the editor will immediately start to generate a live. title is a String!, and Post. In accordance with an embodiment, described herein is a JSON schema generator that parses a JSON stream, determines a data type of each record of the JSON stream, and selects a corresponding record schema generation logic component based on the determined data type to build a record schema for that record. NET attributes from JSON, JSON Schema, and GraphQL queries. JSON is a text-based, human-readable format for representing simple data structures and associative arrays (called objects). graphql-to-json-schema GraphQL Schema to JSON Schema; json-schema-to-graphql-types; jsonschema-to-graphql; Testing. CSS Beautifier. There’s a simple way to make HTTP POST request with GraphQL query and get JSON back. Welcome to Dev Tools Online! Here you find a collection of online tools to format, transform, and generate data for defined formats. codec the name of the compression codec used to compress blocks, as a string. However, it's usually considered good practice to place a schema declaration at the top of a schema. graphql-to-json. I don’t have. This article describes how GraphQL is implemented in "Spidey", an exemplary microservices based online store. fr This is a web-based and fully client-side JSON validator and formatter, without any server dependencies. For instance, the presence of the user_id field in the posts entity leads to the ability to fetch the related User for a Post - and the related Posts for a User. XML to JSON and JSON to XML converter online. Note: In this tutorial, we'll only scratch the surface of this topic. com hÁ quase 3 anos, mantÉm parte dos serviÇos de publicaÇÃo de conteÚdo, apaixonado por mais de uma dÉcada por software e pessoas. We’re going to see how to handle account creation, JWT validation, and working with live data through GraphQL queries. Convert JSON to Java Object. Free JSON to HTML converter from CoolUtils. GraphQL provides out-of-the-box input validation, ensuring that all arguments match the types defined by your schema. JSON to XML Online with https and easiest way to convert JSON to XML. json GraphQL schema file, describing your GraphQL server's API. Escapes or unescapes a JSON string removing traces of offending characters that could prevent parsing. graphql files in your target. NET MVC 5 web pages?. A standard GraphQL schema apart from the realtime subscription which uses a special syntax to indicate to AWS AppSync which mutation to subscribe to (@aws_subscribe(mutations: ["message"])), in this case the message mutation. To perform a query you need to have a root Query object that is an ObjectGraphType. Note that JSON doesn’t support all of the JavaScript keywords, such as you cannot use “undefined” in a valid JSON schema. codec the name of the compression codec used to compress blocks, as a string. For example, that's the case for the getPost field on the Query type. Free Online XML to XSD Converter. As its name suggests, JSON is derived from the JavaScript programming language, but it’s available for use by many languages including Python, Ruby, PHP, and Java. If the "application/graphql" Content-Type header is present, treat the HTTP POST body contents as the GraphQL query string. JSON is a text-based, human-readable format for representing simple data structures and associative arrays (called objects). I use joi everywhere but the downside is it doesn't support a "plaintext" format like json schema, which makes sharing schemas between applications in a language-independent way difficult. This article will explain those to you, so you can focus on your business logic rather than configuration of your WCF services. GraphQL for. In this page you can convert an xml to json and viceversa. Uses jest for unit testing. Q&A for users of the Magento e-Commerce platform. At the core of every GraphQL API, there is a GraphQL schema. DataFetcher associated with it. JSON Editor Online is a web-based tool to view, edit, and format JSON. But they are just weak parodies compared to what XML offers, and I don’t think they have any future. Customize online with advanced options, or download a command-line tool. Transform a GraphQL Schema introspection file to a valid JSON Schema. Before the JSON validator can be used in the editor to check JSON data, a JSON schema must be assigned to the instance. You can provide arguments to a field. Designing a GraphQL Schema Document. graphql files in your target. Since YAML is a superset of JSON, the same approach can also be applied to JSON files. Furthermore, we've learned how to define resources in our schema, custom types and how to resolve these. This module can be used standalone, but if you want to define a specification for your webserver's API, then have a look at Mojolicious::Plugin::OpenAPI, which will replace Mojolicious::Plugin::Swagger2. To learn more, visit the GraphQL and Grandstack Labs page. Can you clarify what you'd trying to do? You received this message because you are subscribed to the Google Groups "Swagger" group. Uses jest for unit testing. The tool will generate a HTML report similar to the following: Introspection is used to ask for a GraphQL schema for information about what queries, types and so on it supports. Implementations are required to support the following codecs: "null" and "deflate". It has a rich, extensible schema language defined in pure JSON. You can also obtain JSON values from a number of functions supplied by MySQL for this purpose (see Section 12. Can the JWT (JSON web token) API from an external provider server and different secure domain be used to login into ASP. This single /graphql endpoint will handle all querying and mutations and is powered by the schema. It's common to see some form of response (output) validation -- i. Here is an excerpt from the introduction: GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. Powered by: @ Generated GraphQL Schema. * Design the GraphQL schema that you want the user to see/perceive. Behind the Covers. The above graphql create command creates a new directory called hello-basic where it places the source files for your GraphQL server as well as the configuration for the belonging Prisma service. A JSON schema specifies that a variable is optional if it does not appear in the "required" keyword array that is associated with the enclosing JSON schema "object" type. * Watch out for bad implementation of the GraphQL API (this will definitely result in bad performance). json file in the root of our. Facebook (well, the GraphQL team at Facebook) has express-graphql which is a middleware implementation of GraphQL for the ExpressJS server package. Concretely, we would query reviews for a given Airbnb listing as an example. For convenience, the package is also activated on the demo distribution but is not yet in the core distribution. I have to expose a set of APIs which returns the same JSON object. Combining schemas¶. At this point, you'll be able to start sending queries to the GraphQL server using GraphQL Playground, which is split into a few parts: The request (on the left) The response (on the right) The documentation (available using the green "SCHEMA" button on the far right side). Use the navigation box on the left side to invoke the corresponding tool. This helps to define the schema of JSON data we shall load in. * Watch out for bad implementation of the GraphQL API (this will definitely result in bad performance). A free online tool to escape or unescape JSON strings. Jürgen Gutsch - 29 May, 2017. Most people run GraphQL on a server to respond live to requests for data from clients. Reimplement the schema In this situation, you can rewrite all the schema, fetching the data from each field resolver, like in this PersonType example:. The left-hand side is for the “Schema” file found on management. The server gets the JSON object and extracts the query string. A JSON schema to parse the content against When the flow runs, it will evaluate the content against the schema. I need to know about some of the newly introduced featured of Magento 2. In fact many of these technologies and their differences are vague to developers alike. World's simplest xml tool. Here is an excerpt from the introduction: GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. API Evangelist. This page allows you to test your JSON Patches. I want to know how can I create schema like input schema , output schema from my service. A light, Electron-based wrapper around GraphiQL. The last step is start our express server. You can also specify whether or not the active JSON Schema should be automatically assigned to the generated JSON sample file. As a workaround, create custom JSON schema to achieve your requirement. Maybe something wrong in resolver or schema? Thanks to everyone!. You can use GetArgument on ResolveFieldContext to retrieve argument values. It's a great format for log files. We are trying to tell Excel to use XML schema to map the data from spreadsheet columns to the data expected from the XML schema. 3, you get a new powerful functionality that helps you understanding any JSON schema more quickly and saves time while you are creating or modifying your JSON schema documents. json ️ a JSON Schema describing all types, Query and Mutations available, we call it “ mutations global jsonSchema ”. As you can see, the JSON Schema is in fact, JSON itself. While providing an overview of an Generating JSON Schema from XSD with JAXB and Jackson - DZone Java. Depends; the JSON:API specification defines a generic schema, but a reliable field-level schema is not yet available. Instructors will explain the terminologies and design principles of GraphQL, the GraphQL way of creating APIs for hierarchical data, how GraphQL is product-centric with client-specified queries, how GraphQL plays well with existing code, and how to work with the GraphQL editor. Flask and Flask GraphQL for the API backend; In this tutorial, I'll show you how to define schema on your backend and transform JSON into GraphQL models. A JSON schema to parse the content against When the flow runs, it will evaluate the content against the schema. Hay más de diez validadores JavaScript activamente disponibles. You can also obtain JSON values from a number of functions supplied by MySQL for this purpose (see Section 12. JSON, short for JavaScript Object Notation, is a lightweight computer data interchange format. Hit F1 or "cmd+shift+p" and type install and then type Prettify JSON and hit enter. Most people run GraphQL on a server to respond live to requests for data from clients. HTML Beautifier. json file in the root of our. 0, but the definitions object in OpenAPI is, in most respects, a valid JSON Schema. Introducing: graphql load. json protobuf 与 GraphQL. In this chapter, we take a look at the GraphQL SDL and build a schema for a photo sharing application. reindex-api converts a JSON based schema into a GraphQL API in addition to creating a database storage (MongoDB or RethinkDB) underneath. Customize online with advanced options, or download a command-line tool. This means that fields that don't have a directive are protected using AWS_IAM. xsd schema file ready, in fact, the easiest way to tell Excel what your data are going to look like is to create a sample XML with at least two repeated nodes. NET Core 2 and Entity Framework Core. Json with support for a reader/writer, a document object model (DOM), and a serializer. For this schema, assume that AWS_IAM is the default authorization type on the AWS AppSync GraphQL API. Hello, I'm fairly new to using PowerShell, and greener still when it comes to PowerShell and JSON, I'm trying to write a script that reads a JSON file and then performs various actions which are dependent upon the information with in that file. This module lets you craft and expose a GraphQL schema for Drupal 8. json 文件步骤》 配置多个 schema. In this article we'll walk through how to set up an API with Express and Apollo. There are a few ways you can test the validity of your GraphQL service: Test the resolver: meaning ensuring that you're injecting all necessary dependencies into your resolvers, then fire them off independently and verify that they do in fact, resolve, with expected data matching the actual data returned, using something like Jest. I can query the list of docs, create a new one, and remove by id. In order to do this, you need to create a graphql. We haven't adding querying to our GraphQL schema, so up until now it won't function. Up until now we've only done some basic Spring Boot preparation work and nothing really related to GraphQL. The code is available as "public domain", meaning that it is completely free to use, without any restrictions at all. #BackendDrivenUI. XMLSpy includes an enterprise-grade JSON Schema generator and graphical JSON schema editor that lets you create JSON Schemas, convert XSD to JSON Schema, generate JSON Schema, and even generate a JSON instance from a schema. Practice GraphQL. As such, it supports the full official GraphQL specification with all its features. You define a schema (a schema is a formal way of describing the shape of your data) for your GraphQL server and then your GraphQL resolvers retrieve data from databases and/or other APIs. JSON is based on key-value pairs, with named attributes and associated values. What we're doing here with GraphQL is stating that we want information from this query. JSON Lines is a convenient format for storing structured data that may be processed one record at a time. As the GraphQL schema matures, new data types appear. In this post we share on json viewers both as online tools and as plugins for browsers and Notepad++ editor. The schema defines an API's type system and all object relationships. It provides a contract for the JSON data required by a given application, and how that data can be modified. views is an Int!. NReco is a collection of reusable components for. For example, when I define a JSON property in my schema of type string, if I also attach the rule "format" : "uri" to that property (because my string is actually a URI) then my corresponding Java property will now have the type java. This takes the ast of a schema document produced by parseSchemaIntoAST in graphql/language/schema and constructs a GraphQLSchema instance which can be then used with all GraphQL. Apollo iOS requires a GraphQL schema file as input to the code generation process. I have a JSON object which has many properties and multiple nested objects as properties. - digiaonline/graphql-php. In this blog post, I’ll discuss how NoSQL data modeling is different from traditional relational schema data modeling, and I’ll also provide you with some guidelines for document database data modeling. Configuring Playground. The GitHub GraphQL API v4 represents an architectural and conceptual shift from the GitHub REST API v3. Facebook (well, the GraphQL team at Facebook) has express-graphql which is a middleware implementation of GraphQL for the ExpressJS server package. Click Upload. We start first by converting to simple POJO then we’ll also show you how you can do the same for Collections Object. Introduction to GraphQL. Most Search structured data uses schema. What's nice about using the graphical interface is that the schema is very well documented right here in the browser. In this section we provide the correct use and syntax of these keywords. reindex-api is a multi-tenant, hosted GraphQL database solution. NET attributes from JSON, JSON Schema, and GraphQL queries. All it takes is a JSON of your data. Get this from a library! Hands-On Full-Stack Web Development with GraphQL and React : Build Scalable Full-Stack Applications While Learning to Solve Complex Problems with GraphQL. fr This is a web-based and fully client-side JSON validator and formatter, without any server dependencies. There are no ads, popups or nonsense, just an awesome XML to JSON converter. A JSON schema to parse the content against When the flow runs, it will evaluate the content against the schema. Free, quick and easy online utility that converts JSON to YAML in your browser. Add, update, or remove custom data in an existing group based on a schema extension definition. Hay más de diez validadores JavaScript activamente disponibles. So I conclude that JSON schema may not always be directly transformed to XML schema, and then back to a JSON schema, using automated tools, without loss of capability. Concretely, we would query reviews for a given Airbnb listing as an example. Each graphql field type has a graphql. Paste your Avro schema in the text area and press the Convert button. Furthermore, we've learned how to define resources in our schema, custom types and how to resolve these. Segment 1: Introduction to GraphQL Length (50 min). This is the basic array schema: { "type": "array" } This schema specifyies arrays and no other JSON. We start first by converting to simple POJO then we’ll also show you how you can do the same for Collections Object. Why JSON? We believe that the strengths of the JSON format makes it a good fit for resumes. Since JSON schema is defined in form of a JSON schema we can also use the editor to edit the schema itself. to MobX-State-Tree Model. To deserialize an instance of type Person from JSON. Generates a GraphQL schema file based on any JSON data. NET Documentation. This option specifies where the driver looks for the schema definition. views is an Int!. When NODE_ENV is set to production, GraphQL Playground (as well as introspection) is disabled as a production best-practice. org Type: Event - An event happening at a certain time and location, such as a concert, lecture, or festival. Scala # Sangria : A Scala GraphQL library that supports Relay. This is quite a good result, as only 15% of websites can load faster. Best Regards, Linda Zhang. You’ve finished coding the skeleton for your application, but it’s missing one thing — authentication. The schema provides all of the different object types that are used in our data. Another interesting too to combine GraphQL schemas is the graphql-weaver (A tool to combine, link and transform GraphQL schemas), that actually was born before the tools created by Apollo. Typical app with API, entities and ORM would have to define the models in 3 different and equivalent places: swagger for API, json-schema/Joi for entities, some ORM-specific format (e. This ensures that if validation has passed, the JSON instance is guaranteed to be in the expected format. Steps to read JSON file to Dataset in Spark To read JSON file to Dataset in Spark Create a Bean Class (a simple class with properties that represents an object in the JSON file). Type we got is easily manageable and scalable as well as. when to prefer one over the other JSON. Introduction. Expires: July 23, 2018 January 19, 2018 JSON Hyper-Schema: A Vocabulary for Hypermedia Annotation of JSON draft-handrews-json-schema-hyperschema-01 Abstract JSON Schema is a JSON-based format for describing JSON data using various vocabularies. Click OK, and you’ll immediately have a valid JSON instance to use as a starting point. Therefore, JSON Schema can not use type alone to distinguish between integers and non-integers. json-graphql-server. This is very useful as we will see later on. For these aspects, we will use the GraphQL Java Spring Boot adapter which takes care of exposing our API via Spring Boot over HTTP. Uses the sample JSON document to infer a JSON schema. After looking at a lot of the Swagger schemas available online, I think that Swagger or similar API description languages can be a good starting point for defining a GraphQL schema, but they often don't contain enough information to generate a schema on their own. Depending on the call you are making this may take a while and return different JSON schema’s. Our theming system was released just recently and new themes have already started popping up. To make use of these, first, we'll need to build a GraphQL type schema which maps to our code base. For convenience, the package is also activated on the demo distribution but is not yet in the core distribution. The right-hand-side box is for your agency’s data file. It seems like the other stuff is type checking? so it's part of the graphql spec to include type checking, because the graphql spec requires that a schema be generated (which, again, requires built-in typechecking). When you look Listings 1 and 2 above, you have no problem determining that there are attributes; firstName, lastName, and dob. The script is useful for examining the GraphQL schema looking for information leakage, hidden data and fields that are not intended to be accessible. To create the schema we're calling the function and passing in a string that contains the IDL (GraphQL Interface Definition Language) code which is used to describe the schema. Common mistakes made when using new technologies are made all over again. To generate C# classes from a JSON Schema. An online, interactive JSON Schema validator. Create a new group with extended data based on the schema extension definition that you just registered. For all other fields in the schema we need to define default behavior that just transforms context JSON value in appropriate GraphQL representation. As you can see, the JSON Schema is in fact, JSON itself. Once your schema and data is imported, you can instantly start running powerful queries with filters, pagination, sorting, …. An in-browser IDE for exploring GraphQL. In other words, the fields of the data structure are apparent. I want to know how can I create schema like input schema , output schema from my service.