Groovy

扩展类

:::: code-group

::: code-group-item org.codehaus.groovy.runtime.ExtensionModule:active

# resources/META-INF/services/org.codehaus.groovy.runtime.ExtensionModule
moduleName=pirate-module
moduleVersion=1.0
extensionClasses=fyi.ori.test.ExTestC1,fyi.ori.test.ExTestC3
staticExtensionClasses=fyi.ori.test.ExTestC2

:::

::: code-group-item ExTestC2.java

class ExTestC2 {
    static void exMethod2(TestC1 self) {
        System.println("exMethod2")
    }
}

:::

::: code-group-item ExTestC3.java

class ExTestC3 {
    static void exMethod1(TestC1 self) {
        System.println("exMethod3")
    }
}

:::

::::

mixin

@Category(Vehicle) class FlyingAbility {
    def fly() { "I'm the ${name} and I fly!" }
}


@Category(Vehicle) class DivingAbility {
    def dive() { "I'm the ${name} and I dive!" }
}


interface Vehicle {
    String getName()
}


@Mixin(DivingAbility)
class Submarine implements Vehicle {
    String getName() { "Yellow Submarine" }
}


@Mixin(FlyingAbility)
class Plane implements Vehicle {
    String getName() { "Concorde" }
}


@Mixin([DivingAbility, FlyingAbility])
class JamesBondVehicle implements Vehicle {
    String getName() { "James Bond's vehicle" }
}


assert new Plane().fly() ==
       "I'm the Concorde and I fly!"
assert new Submarine().dive() ==
       "I'm the Yellow Submarine and I dive!"


assert new JamesBondVehicle().fly() ==
       "I'm the James Bond's vehicle and I fly!"
assert new JamesBondVehicle().dive() ==
       "I'm the James Bond's vehicle and I dive!"