kronos-example-solon

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This is a sample project based on Solon + Kronos ORM + JDK 17 + Maven + Kotlin 2.1.0.

If you would like to learn more about Kronos, please visit Kronos.

NOTICE

If you built failed in Intellij IDEA and build with Maven, please try to enable the following setting: Settings / Build, Execution, Deployment / Build Tools / Maven / Runner / Delegate IDE build/run actions to Maven.

Introducing Maven dependencies

1. Add Kronos dependency

    <repositories>
    <repository>
        <name>Central Portal Snapshots</name>
        <id>central-portal-snapshots</id>
        <url>https://central.sonatype.com/repository/maven-snapshots/</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>com.kotlinorm</groupId>
        <artifactId>kronos-core</artifactId>
        <version>${kronos.version}</version>
    </dependency>
</dependencies>

2. Add Kotlin compiler plugin

<pluginRepositories>
    <pluginRepository>
        <id>central-portal-snapshots</id>
        <url>https://central.sonatype.com/repository/maven-snapshots/</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </pluginRepository>
</pluginRepositories>

<plugins>
    <plugin>
        <groupId>org.jetbrains.kotlin</groupId>
        <artifactId>kotlin-maven-plugin</artifactId>
        <extensions>true</extensions>
        <configuration>
            <compilerPlugins>
                <plugin>all-open</plugin>
                <plugin>kronos-maven-plugin</plugin>
            </compilerPlugins>
        </configuration>
        <dependencies>
            <dependency>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-allopen</artifactId>
                <version>${kotlin.version}</version>
            </dependency>
            <dependency>
                <groupId>com.kotlinorm</groupId>
                <artifactId>kronos-maven-plugin</artifactId>
                <version>${kronos.version}</version>
            </dependency>
        </dependencies>
    </plugin>
</plugins>

Configure the data source

The sample project uses kronos-jdbc-wrapper, and you can configure the data source in the following way. You can also replace it with another wrapper or customize the wrapper.

@SolonMain
class App

@Inject("\${db.url}")
var dbUrl: String? = null

@Inject("\${db.username}")
var dbUsername: String? = null

@Inject("\${db.password}")
var dbPassword: String? = null

val wrapper by lazy {
    KronosBasicWrapper(
        BasicDataSource().apply {
            url = dbUrl
            username = dbUsername
            password = dbPassword
        }
    )
}

fun main(args: Array<String>) {
    Kronos.init {
        dataSource = { wrapper }
        fieldNamingStrategy = lineHumpNamingStrategy
        tableNamingStrategy = lineHumpNamingStrategy
    }
    
    Solon.start(App::class.java, args)
}

Run the project

After running the project, visit the following URL to view the results:

http://localhost:8081

If the interface returns the results shown below, Kronos has run successfully and the compiler plugin is working properly.