groovy

groovyc compilation problem for return values with generics

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 1.8.1
  • Fix Version/s: 1.8.2, 1.9-beta-3, 1.7.11
  • Component/s: Compiler
  • Labels:
    None
  • Environment:
  • Number of attachments :
    1

Description

Hi I have following code which was ok for groovy 1.8.0 but after updating to groovy 1.8.1 I have failed compilation

MessagingTask.groovy
class MessagingTask<T extends Serializable> {

  private static final long serialVersionUID = -5533069690405593263L;

  Long id
  String messageId
  String inDestination
  String outDestination
  MessagingTaskType messageType
  T messagePayload

  public String toString() {
    return "Task{" +
            "id=" + id +
            ", messageId='" + messageId + '\'' +
            ", inDestination='" + inDestination + '\'' +
            ", outDestination='" + outDestination + '\'' +
            ", messageType='" + messageType + '\'' +
            ", messagePayload=" + messagePayload +
            '}';
  }
}
MessagingTaskDatabase.groovy
class MessagingTaskDatabase {

    public List<MessagingTask<OutMessage>> loadOutMessage() {
        return new ArrayList<MessagingTask<OutMessage>>();
    }

}
SomeClient.java
List<MessagingTask<OutMessage>> messagingTasks = taskDatabase.loadOutMessage();

And the compile log:

    [mkdir] Created dir: /home/sargis/projects/twm_v3/trunk/twm_v3/accounting/Server/classes
  [groovyc] Compiling 185 source files to /home/sargis/projects/twm_v3/trunk/twm_v3/accounting/Server/classes
  [groovyc] org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
  [groovyc] Compile error during compilation with javac.
  [groovyc] /home/sargis/projects/twm_v3/trunk/twm_v3/accounting/Server/src/com/webbfontaine/twm/accounting/epaylog/scheduler/SendingScheduler.java:46: incompatible types
  [groovyc] found   : java.util.List<com.webbfontaine.twm.accounting.epaylog.emess.task.MessagingTask>
  [groovyc] required: java.util.List<com.webbfontaine.twm.accounting.epaylog.emess.task.MessagingTask<com.webbfontaine.twm.accounting.epaylog.emess.core.OutMessage>>
  [groovyc]         List<MessagingTask<OutMessage>> messagingTasks = taskDatabase.loadOutMessage();
  [groovyc]                                                                                     ^
  [groovyc] Note: Some input files use unchecked or unsafe operations.
  [groovyc] Note: Recompile with -Xlint:unchecked for details.
  [groovyc] 1 error
  [groovyc] 
  [groovyc] 
  [groovyc] 1 error

But if I remove generic type parameters from return and compilation is ok

public List loadOutMessage() {
    return new ArrayList<MessagingTask<OutMessage>>();
}

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Sargis Harutyunyan added a comment - - edited

I created some simple project with gradle to help you to reproduce compilation error

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Sargis Harutyunyan added a comment - - edited I created some simple project with gradle to help you to reproduce compilation error
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Paul King added a comment -

add code tags

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Paul King added a comment - add code tags
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Paul King added a comment -

Should be fixed - if you can try a snapshot jar, that would be great.

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Paul King added a comment - Should be fixed - if you can try a snapshot jar, that would be great.
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Sargis Harutyunyan added a comment -

I tried to build with snapshot jar and now everything is ok, issue solved. Thanks.

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Sargis Harutyunyan added a comment - I tried to build with snapshot jar and now everything is ok, issue solved. Thanks.

People

  • Assignee:
    Paul King
    Reporter:
    Sargis Harutyunyan
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Dates

  • Created:
    Updated:
    Resolved: