GraphQL

Schema type Project { name: String tagline: String contributors: [User] }

Query { project(name: "GraphQL") { tagline } }

Results { "project": { "tagline": "A query language for APIs" } }

Scalar

About the types you can assign to fields or to the return values of operations. Graphql Java supports the following types:

String                  Boolean                  Int
Float                   ID                       Long
Short                   Byte                     Float
BigDecimal              BigInteger

Sencha Store

Ext/data/ ├─ operation/ │ ├─ Create [POST ] │ ├─ Destory [DELETE] │ ├─ Operation │ ├─ Read [GET ] │ └─ Update [PUT ] │ ├─ proxy/ │ ├─ Ajax │ ├─ Proxy │ └─ Rest

│ ├─ reader/ │ ├─ Array │ ├─ JSON │ ├─ Reader │ └─ XML │ ├─ request/ │ ├─ Ajax │ ├─ Base │ └─ Form │

│ ├─ writer/ │ ├─ Array │ ├─ JSON │ └─ XML │ │ Ext/grid/filters/ ├─ filter └─ Filters

https://docs.sencha.com/extjs/6.2.0/classic/Ext.data.JsonStore.html
https://docs.sencha.com/extjs/6.2.0/classic/src/JsonStore.js.html

https://docs.sencha.com/extjs/6.2.0/classic/Ext.data.proxy.Rest.html
https://docs.sencha.com/extjs/6.2.0/classic/src/Rest.js.html

https://docs.sencha.com/extjs/6.2.0/classic/Ext.data.proxy.Ajax.html
https://docs.sencha.com/extjs/6.2.0/classic/src/Ajax.js-1.html

https://docs.sencha.com/extjs/6.2.0/classic/Ext.toolbar.Paging.html
https://docs.sencha.com/extjs/6.2.0/classic/src/Paging.js.html

https://docs.sencha.com/extjs/6.2.0/classic/Ext.grid.filters.Filters.html
https://docs.sencha.com/extjs/6.2.0/classic/src/Filters.js.html

Custom Scalar

@Component
public class DateScalarType extends GraphQLScalarType {
    public DateScalarType() {
        super("Date", "java.sql.Date", new Coercing<Date, String>() {

            @Override
            public String serialize(Object dataFetcherResult) throws CoercingSerializeException {
                if(dataFetcherResult != null && dataFetcherResult instanceof Date) {
                    Date sqlDate = (Date)dataFetcherResult;
                    java.util.Date date = new Date(sqlDate.getTime());
                    String isoDate = DateUtil.format(date, DateUtil.ISO_DATE);
                    return isoDate;
                }
                return null;
            }

            @Override
            public Date parseValue(Object input) throws CoercingParseValueException {
                if(input != null && input instanceof String) {
                    String isoDate = (String)input;
                    java.util.Date date = DateUtil.parse(isoDate, DateUtil.ISO_DATE);
                    Date sqlDate = (date != null) ? new Date(date.getTime()) : null;
                    return sqlDate;
                }
                return null;
            }

            @Override
            public Date parseLiteral(Object input) throws CoercingParseLiteralException {
                if(input != null && input instanceof StringValue) {
                    String isoDate = ((StringValue)input).getValue();
                    java.util.Date date = DateUtil.parse(isoDate, DateUtil.ISO_DATE);
                    Date sqlDate = (date != null) ? new Date(date.getTime()) : null;
                    return sqlDate;
                }
                return null;
            }
        });
    }
}

Handle Lazy Loads

import javax.servlet.Filter;
import org.springframework.context.annotation.Configuration
import org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter;

@Configuration
public class SpringGraqphQLConfig {

    /**
     * Register the {@link OpenEntityManagerInViewFilter} so that the
     * GraphQL-Servlet can handle lazy loads during execution.
     *
     * @return
     */
    @Bean
     public Filter OpenFilter() {
        return new OpenEntityManagerInViewFilter();
    }
}

Convention

1. Query:
  i   => searchUsers: [User]
  ii  => searchUsersByOffset(page: Int, size: Int): [User]
  iii => searchUser(id: String): User
  iv  => searchUserCount: Long
  v   => searchUserPageCount(size: Int): Long

2. Mutation:
  i   => insertUser(in: UserIn!): User!
  ii  => updateUser(id: String!, in: UserIn!): User!
  iii => deleteUser(id: String!): Boolean!

References

Getting started with GraphQL Java and Spring Boot Securing GraphQL API with Spring Security GraphQL server using Spring Boot, Part I GraphQL Java Documentation Spring Boot GraphQL Learn GraphQL Core Concepts GraphiQL IDE GraphiQL GraphQL

Authentication in Spring Boot using GraphQL GraphQL Namespaces Proposal Spring Boot Exception Handling Set a base for the API Endpoint GraphQL Spring boot starter Spectrum GraphQL Java GraphQL Authentication Enable GraphQL Servlet GraphQL Java Kikstart Spring Boot Actuator

LazyInitializationException with Spring Boot AJAX query with a variable by using Http POST Building a GraphQL Server with Spring Boot Separate Resolvers into Multiple Classes GraphQL mutations with Spring Boot Subscriptions over WebSockets AJAX query by using Http GET Custom DataTime scalar GraphQL & Spring Boot GraphQL Query Aliases

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Cache GraphQL POST requests with Service Worker A GraphQL Server With Node.js and Express Caching POST requests for offline use in a PWA GraphQL with Apollo Server and Express lz-string: JavaScript compression, fast! SpaceX GraphQL API Code Sendbox Dexie.js - A JS library for IndexedDB Service Worker GraphQL Example GraphQL Web Servlet Endpoint Workbox

Subscriptions using graphql-java-servlet GraphQL with spring-boot-starter-graphql GraphQL Subscriptions over WebSockets Learn GraphQL Fundamentals GraphQL with .NET Core