Class has no constructor that is annotated with @Inject while writing plugin in Java using Gradle 2.0-rc1

Evil_Cat · June 17, 2014, 7:25pm

I am trying to rewrite one plugin from Groovy

to Java but have this problem. From where comes this constructor with @Inject In line 1 I call my plugin

Script '\Project\essay.gradle' line: 1
  * What went wrong:
A problem occurred evaluating script.
> Could not create plugin of type 'EssayPlugin'.
  * Try:
Run with --info or --debug option to get more log output.
  * Exception is:
org.gradle.api.GradleScriptException: A problem occurred evaluating script.
        at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:54)
        at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:187)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.applyScript(DefaultObjectConfigurationAction.java:98)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.access$000(DefaultObjectConfigurationAction.java:36)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction$1.run(DefaultObjectConfigurationAction.java:67)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.execute(DefaultObjectConfigurationAction.java:130)
        at org.gradle.api.internal.project.AbstractPluginAware.apply(AbstractPluginAware.java:41)
        at org.gradle.api.Project$apply.call(Unknown Source)
        at org.gradle.api.internal.project.ProjectScript.apply(ProjectScript.groovy:34)
        at org.gradle.api.Script$apply.callCurrent(Unknown Source)
        at build_49mi2nmenfvuklvqj0lvurqsol.run(Project\build.gradle:13)
        at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:52)
        at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:187)
        at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:39)
        at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:26)
        at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:34)
        at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:55)
        at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:470)
        at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:79)
        at org.gradle.configuration.DefaultBuildConfigurer.configure(DefaultBuildConfigurer.java:31)
        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:128)
        at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:105)
        at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:85)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:81)
        at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
        at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:39)
        at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:45)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:35)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:24)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.StartStopIfBuildAndStop.execute(StartStopIfBuildAndStop.java:33)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.ReturnResult.execute(ReturnResult.java:34)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:71)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:69)
        at org.gradle.util.Swapper.swap(Swapper.java:38)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:69)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:60)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:45)
        at org.gradle.launcher.daemon.server.DaemonStateCoordinator.runCommand(DaemonStateCoordinator.java:184)
        at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy.doBuild(StartBuildOrRespondWithBusy.java:49)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.HandleStop.execute(HandleStop.java:30)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.DaemonHygieneAction.execute(DaemonHygieneAction.java:39)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.CatchAndForwardDaemonFailure.execute(CatchAndForwardDaemonFailure.java:32)
        at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
        at org.gradle.launcher.daemon.server.exec.DefaultDaemonCommandExecuter.executeCommand(DefaultDaemonCommandExecuter.java:51)
        at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.handleCommand(DefaultIncomingConnectionHandler.java:155)
        at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.receiveAndHandleCommand(DefaultIncomingConnectionHandler.java:128)
        at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.run(DefaultIncomingConnectionHandler.java:116)
        at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
Caused by: org.gradle.api.plugins.PluginInstantiationException: Could not create plugin of type 'EssayPlugin'.
        at org.gradle.api.internal.plugins.DefaultPluginRegistry.loadPlugin(DefaultPluginRegistry.java:67)
        at org.gradle.api.internal.plugins.DefaultPluginContainer.providePlugin(DefaultPluginContainer.java:109)
        at org.gradle.api.internal.plugins.DefaultPluginContainer.addPluginInternal(DefaultPluginContainer.java:69)
        at org.gradle.api.internal.plugins.DefaultPluginContainer.apply(DefaultPluginContainer.java:35)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.applyPlugin(DefaultObjectConfigurationAction.java:117)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.access$200(DefaultObjectConfigurationAction.java:36)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction$3.run(DefaultObjectConfigurationAction.java:85)
        at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.execute(DefaultObjectConfigurationAction.java:130)
        at org.gradle.groovy.scripts.DefaultScript.apply(DefaultScript.java:98)
        at org.gradle.api.Script$apply.callCurrent(Unknown Source)
        at essay_4i83bnircg33gus4rak6q37iap.run(\Project\essay.gradle:1)
        at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:52)
        ... 64 more
Caused by: java.lang.IllegalArgumentException: Class com.tat.plugins.EssayPlugin has no constructor that is annotated with @Inject.
        at org.gradle.api.internal.DependencyInjectingInstantiator.selectConstructor(DependencyInjectingInstantiator.java:100)
        at org.gradle.api.internal.DependencyInjectingInstantiator.newInstance(DependencyInjectingInstantiator.java:44)
        at org.gradle.api.internal.plugins.DefaultPluginRegistry.loadPlugin(DefaultPluginRegistry.java:65)
        ... 75 more

My plugin’s cod

class EssayPlugin implements Plugin<Project> {
        public static final String CHECK_ESSAY_TASK_NAME = "essaysCheck";
        @Override
    public void apply(Project project) {
          CheckEssaysTask checkEssaysTask = project.getTasks().create(CHECK_ESSAY_TASK_NAME, CheckEssaysTask.class);
         }
}

Evil_Cat · June 19, 2014, 6:35pm

When I try with Gradle 1.12 this error disappear. Is this related to: > Task constructor injection changes

Tasks are now constructed according to JSR-330. This means that a task type must either have a single public zero-args constructor, or annotate one constructor with @Inject.

Previously, Gradle would accept a class with a single constructor with multiple parameters that was not annotated with @Inject. This was deprecated in Gradle 1.2 and is now an error.Task constructor changes

But I need newer Gradle >1.12, how to solve the problem?

luke_daley · June 19, 2014, 11:05pm

Can you try making the class ‘public’ please.

Evil_Cat · June 20, 2014, 4:52am

(blush) Thanks Luke, that solve my problem

luke_daley · June 20, 2014, 5:30am

No problems.

I’ll fix up the error message here. It should have told you this was the problem.

luke_daley · June 26, 2014, 5:29am

FYI - 2.1 will allow classes to be package-private.

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Class has no constructor that is annotated with @Inject while writing plugin in Java using Gradle 2.0-rc1

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