在自定义插件中使用Gradle依赖关系

Question

I am trying to write a custom Gradle Plugin that invokes the flyway migration using their API:

https://flywaydb.org/documentation/api/

This is a minimal example:

buildscript {
    repositories.jcenter()
    dependencies.classpath "org.flywaydb:flyway-core:4.1.2"
}

apply plugin: DatabaseHandlerPlugin

class DatabaseHandlerPlugin implements Plugin<Project> {
    void apply(Project project) {
        project.task("databaseHandler").doLast {
            org.flywaydb.Flyway f = new Flyway(); // <= How can I use the above declared dependency here and in my projects?
        }
    }
}

But my gradle complains that it cannot load the Flyway class.

Answer 1

The Flyway class is in the org.flywaydb.core package. You missed the core bit. My full code that works:

import org.flywaydb.core.Flyway; // << can import here

buildscript {
    repositories { mavenCentral() }

    dependencies {
        classpath "org.flywaydb:flyway-core:4.1.2"
    }

}
apply plugin: DatabaseHandlerPlugin

class DatabaseHandlerPlugin implements Plugin<Project> {
    void apply(Project project) {
        project.task('databaseHandler') {
            doLast {
                Flyway f = new Flyway()
                println "Flyway: $f"
            }
        }
    }
}

Output:

> gradle databaseHandler    
:databaseHandler
Flyway: org.flywaydb.core.Flyway@7b27e8f4