Graphitron

https://graphitron.sikt.no
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Graphitron is a code generation tool that automatically generates Java code and database queries...
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### Configure Graphitron Maven Plugin

Source: https://graphitron.sikt.no/docs/quick_start_guide

Add the plugin to your pom.xml to process GraphQL schema files and generate resolvers.

```xml
<plugin>  
    <groupId>no.sikt</groupId>  
    <artifactId>graphitron-maven-plugin</artifactId>  
    <version>${versions.graphitron}</version>  
    <configuration>  
        <schemaFiles>  
            <schemaFile>${project.basedir}/schema.graphql</schemaFile>  
        </schemaFiles>  
        <jooqGeneratedPackage>${generatedJooqPackage}</jooqGeneratedPackage>  
        <outputPackage>${generatedGraphitronPackage}</outputPackage>  
    </configuration>  
    <executions>  
        <execution>  
            <id>generate-with-graphitron</id>  
            <phase>generate-sources</phase>  
            <goals>  
                <goal>generate</goal>  
            </goals>  
        </execution>  
    </executions>  
</plugin>  
```

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### Configure jOOQ Code Generator in Maven

Source: https://graphitron.sikt.no/docs/quick_start_guide

Add this plugin configuration to your pom.xml to generate Java classes from a PostgreSQL database schema.

```xml
<plugin>  
    <groupId>org.jooq</groupId>  
    <artifactId>jooq-codegen-maven</artifactId>  
    <executions>  
        <execution>  
            <id>jooq-code-generator</id>  
            <phase>generate-sources</phase>  
            <goals>  
                <goal>generate</goal>  
            </goals>  
            <configuration>  
                <jdbc>  
                    <driver>org.postgresql.Driver</driver>  
                    <url>${db.url}</url>  
                    <user>${db.username}</user>  
                    <password>${db.password}</password>  
                </jdbc>  
                <generator>  
                    <database>  
                        <inputSchema>public</inputSchema>  
                    </database>  
                    <target>  
                        <packageName>${generatedJooqPackage}</packageName>  
                        <directory>target/generated-sources/jooq</directory>  
                    </target>  
                </generator>  
            </configuration>  
        </execution>  
    </executions>  
    <dependencies>  
        <dependency>  
            <groupId>org.postgresql</groupId>  
            <artifactId>postgresql</artifactId>  
            <version>${version.postgresql}</version>  
        </dependency>  
    </dependencies>  
</plugin>  
```

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### Define GraphQL Schema with Directives

Source: https://graphitron.sikt.no/docs/quick_start_guide

Use @table and @field directives to map GraphQL types to your database model.

```graphql
type Query {  
    customers: [Customer]  
}  
  
type Customer @table {  
    id: ID  
    firstName: String! @field(name: "FIRST_NAME")  
    lastName: String! @field(name: "LAST_NAME")  
    email: String  
    address: Address!  
}  
  
type Address @table {  
    id: ID  
    addressLine1: String! @field(name: "ADDRESS_")  
    addressLine2: String @field(name: "ADDRESS2")  
    zip: String @field(name: "POSTAL_CODE")  
    phone: String!  
}  
```
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