LoggerFactory cannot getLogger

I'm currently implementing a Logger and I'm wondering why the code won't run.
Most of the codes snipets are like these:

Logger log = LoggerFactory.getLogger(this.getClass());

My imported classes:

import org.osgi.framework.BundleContext;

import org.osgi.framework.ServiceReference;

import org.osgi.service.log.LogReaderService;

import org.osgi.service.log.LogService;

import org.osgi.service.log.Logger;

import org.osgi.service.log.LoggerFactory;

But I can't seem to use getLogger.

Why is that?

Thanks in advance! No getLogger() classes are available

edited Nov 21 '18 at 9:38

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

Instead of images, please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 21 '18 at 9:25

I'm wondering what i'm doing wrong because it doesn't display the getLogger methods

– Mel Sy Gallosa
Nov 21 '18 at 9:33

Can you post the import section of that class?

– user10639668
Nov 21 '18 at 9:34

@EugenCovaci I edited the post. :)

– Mel Sy Gallosa
Nov 21 '18 at 9:38

If you write Logger log = LoggerFactory.getLogger(this.getClass()); directly, do you get a compiler error?

– user10639668
Nov 21 '18 at 9:43

|
show 2 more comments

I'm currently implementing a Logger and I'm wondering why the code won't run.
Most of the codes snipets are like these:

Logger log = LoggerFactory.getLogger(this.getClass());

My imported classes:

import org.osgi.framework.BundleContext;

import org.osgi.framework.ServiceReference;

import org.osgi.service.log.LogReaderService;

import org.osgi.service.log.LogService;

import org.osgi.service.log.Logger;

import org.osgi.service.log.LoggerFactory;

But I can't seem to use getLogger.

Why is that?

Thanks in advance! No getLogger() classes are available

edited Nov 21 '18 at 9:38

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

Instead of images, please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 21 '18 at 9:25

I'm wondering what i'm doing wrong because it doesn't display the getLogger methods

– Mel Sy Gallosa
Nov 21 '18 at 9:33

Can you post the import section of that class?

– user10639668
Nov 21 '18 at 9:34

@EugenCovaci I edited the post. :)

– Mel Sy Gallosa
Nov 21 '18 at 9:38

If you write Logger log = LoggerFactory.getLogger(this.getClass()); directly, do you get a compiler error?

– user10639668
Nov 21 '18 at 9:43

|
show 2 more comments

I'm currently implementing a Logger and I'm wondering why the code won't run.
Most of the codes snipets are like these:

Logger log = LoggerFactory.getLogger(this.getClass());

My imported classes:

import org.osgi.framework.BundleContext;

import org.osgi.framework.ServiceReference;

import org.osgi.service.log.LogReaderService;

import org.osgi.service.log.LogService;

import org.osgi.service.log.Logger;

import org.osgi.service.log.LoggerFactory;

But I can't seem to use getLogger.

Why is that?

Thanks in advance! No getLogger() classes are available

edited Nov 21 '18 at 9:38

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

I'm currently implementing a Logger and I'm wondering why the code won't run.
Most of the codes snipets are like these:

Logger log = LoggerFactory.getLogger(this.getClass());

My imported classes:

import org.osgi.framework.BundleContext;

import org.osgi.framework.ServiceReference;

import org.osgi.service.log.LogReaderService;

import org.osgi.service.log.LogService;

import org.osgi.service.log.Logger;

import org.osgi.service.log.LoggerFactory;

But I can't seem to use getLogger.

Why is that?

Thanks in advance! No getLogger() classes are available

java eclipse logging osgi loggerfactory

edited Nov 21 '18 at 9:38

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

edited Nov 21 '18 at 9:38

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

edited Nov 21 '18 at 9:38

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

asked Nov 21 '18 at 9:18

Mel Sy Gallosa

1942618

Instead of images, please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 21 '18 at 9:25

I'm wondering what i'm doing wrong because it doesn't display the getLogger methods

– Mel Sy Gallosa
Nov 21 '18 at 9:33

Can you post the import section of that class?

– user10639668
Nov 21 '18 at 9:34

@EugenCovaci I edited the post. :)

– Mel Sy Gallosa
Nov 21 '18 at 9:38

If you write Logger log = LoggerFactory.getLogger(this.getClass()); directly, do you get a compiler error?

– user10639668
Nov 21 '18 at 9:43

|
show 2 more comments

Instead of images, please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 21 '18 at 9:25

I'm wondering what i'm doing wrong because it doesn't display the getLogger methods

– Mel Sy Gallosa
Nov 21 '18 at 9:33

Can you post the import section of that class?

– user10639668
Nov 21 '18 at 9:34

@EugenCovaci I edited the post. :)

– Mel Sy Gallosa
Nov 21 '18 at 9:38

If you write Logger log = LoggerFactory.getLogger(this.getClass()); directly, do you get a compiler error?

– user10639668
Nov 21 '18 at 9:43

Instead of images, please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 21 '18 at 9:25

I'm wondering what i'm doing wrong because it doesn't display the getLogger methods

– Mel Sy Gallosa
Nov 21 '18 at 9:33

Can you post the import section of that class?

– user10639668
Nov 21 '18 at 9:34

@EugenCovaci I edited the post. :)

– Mel Sy Gallosa
Nov 21 '18 at 9:38

If you write Logger log = LoggerFactory.getLogger(this.getClass()); directly, do you get a compiler error?

– user10639668
Nov 21 '18 at 9:43

|
show 2 more comments

2 Answers
2

active

oldest

votes

Here is the source code of org.osgi.service.log.LoggerFactory.

As you can see, it's an interface with no static methods therefore this code:

Logger log = LoggerFactory.getLogger(this.getClass());

is simply not valid.

To fix this use slf4j as front end (this means replace org.osgi.service.log.LoggerFactory import with org.slf4j.LoggerFactory etc.).

UPDATE

If you want to stick with org.osgi.service.log.LoggerFactory then follow this:

Obtain the LoggerFactory instance:

public class Activator implements BundleActivator

{

    private volatile LoggerFactory loggerFactory;



    public void start(BundleContext context) throws Exception 

    {   

        ServiceReference ref = context.getServiceReference(LoggerFactory.class.getName());

        if (ref != null)

        {

            loggerFactory = (LoggerFactory) context.getService(ref);

        }

    }



    //..

Elsewhere in the bundle you can then use the LoggerFactory to get a Logger for any class:

Logger logger = loggerFactory.getLogger(Foo.class);

UPDATE2

A better alternative would be to get a reference who's service type is LoggerFactory like this:

@Reference(service = LoggerFactory.class)

private Logger logger;

edited Nov 22 '18 at 15:41

answered Nov 21 '18 at 9:49

user10639668

But I need to use this LoggerFactory/Logger to change from LogService (since LogService has been depreciated in 1.4) Please help. Thanks!

– Mel Sy Gallosa
Nov 21 '18 at 9:56

But I'll try using this. I hope it works.

– Mel Sy Gallosa
Nov 21 '18 at 10:00

Oh. I need to use plugins from eclipse only >_<

– Mel Sy Gallosa
Nov 21 '18 at 10:04

@MelSyGallosa See my updated answer

– user10639668
Nov 21 '18 at 10:06

1

@NeilBartlett Done.

– user10639668
Nov 22 '18 at 15:41

|
show 8 more comments

LoggerFactory is an OSGi service. You need to get it from the OSGi service registry. See my EclipseCon Europe 2018 presentation for more information.

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

Here is the source code of org.osgi.service.log.LoggerFactory.

As you can see, it's an interface with no static methods therefore this code:

Logger log = LoggerFactory.getLogger(this.getClass());

is simply not valid.

To fix this use slf4j as front end (this means replace org.osgi.service.log.LoggerFactory import with org.slf4j.LoggerFactory etc.).

UPDATE

If you want to stick with org.osgi.service.log.LoggerFactory then follow this:

Obtain the LoggerFactory instance:

public class Activator implements BundleActivator

{

    private volatile LoggerFactory loggerFactory;



    public void start(BundleContext context) throws Exception 

    {   

        ServiceReference ref = context.getServiceReference(LoggerFactory.class.getName());

        if (ref != null)

        {

            loggerFactory = (LoggerFactory) context.getService(ref);

        }

    }



    //..

Elsewhere in the bundle you can then use the LoggerFactory to get a Logger for any class:

Logger logger = loggerFactory.getLogger(Foo.class);

UPDATE2

A better alternative would be to get a reference who's service type is LoggerFactory like this:

@Reference(service = LoggerFactory.class)

private Logger logger;

edited Nov 22 '18 at 15:41

answered Nov 21 '18 at 9:49

user10639668

But I need to use this LoggerFactory/Logger to change from LogService (since LogService has been depreciated in 1.4) Please help. Thanks!

– Mel Sy Gallosa
Nov 21 '18 at 9:56

But I'll try using this. I hope it works.

– Mel Sy Gallosa
Nov 21 '18 at 10:00

Oh. I need to use plugins from eclipse only >_<

– Mel Sy Gallosa
Nov 21 '18 at 10:04

@MelSyGallosa See my updated answer

– user10639668
Nov 21 '18 at 10:06

1

@NeilBartlett Done.

– user10639668
Nov 22 '18 at 15:41

|
show 8 more comments

Here is the source code of org.osgi.service.log.LoggerFactory.

As you can see, it's an interface with no static methods therefore this code:

Logger log = LoggerFactory.getLogger(this.getClass());

is simply not valid.

To fix this use slf4j as front end (this means replace org.osgi.service.log.LoggerFactory import with org.slf4j.LoggerFactory etc.).

UPDATE

If you want to stick with org.osgi.service.log.LoggerFactory then follow this:

Obtain the LoggerFactory instance:

public class Activator implements BundleActivator

{

    private volatile LoggerFactory loggerFactory;



    public void start(BundleContext context) throws Exception 

    {   

        ServiceReference ref = context.getServiceReference(LoggerFactory.class.getName());

        if (ref != null)

        {

            loggerFactory = (LoggerFactory) context.getService(ref);

        }

    }



    //..

Elsewhere in the bundle you can then use the LoggerFactory to get a Logger for any class:

Logger logger = loggerFactory.getLogger(Foo.class);

UPDATE2

A better alternative would be to get a reference who's service type is LoggerFactory like this:

@Reference(service = LoggerFactory.class)

private Logger logger;

edited Nov 22 '18 at 15:41

answered Nov 21 '18 at 9:49

user10639668

But I need to use this LoggerFactory/Logger to change from LogService (since LogService has been depreciated in 1.4) Please help. Thanks!

– Mel Sy Gallosa
Nov 21 '18 at 9:56

But I'll try using this. I hope it works.

– Mel Sy Gallosa
Nov 21 '18 at 10:00

Oh. I need to use plugins from eclipse only >_<

– Mel Sy Gallosa
Nov 21 '18 at 10:04

@MelSyGallosa See my updated answer

– user10639668
Nov 21 '18 at 10:06

1

@NeilBartlett Done.

– user10639668
Nov 22 '18 at 15:41

|
show 8 more comments

Here is the source code of org.osgi.service.log.LoggerFactory.

As you can see, it's an interface with no static methods therefore this code:

Logger log = LoggerFactory.getLogger(this.getClass());

is simply not valid.

To fix this use slf4j as front end (this means replace org.osgi.service.log.LoggerFactory import with org.slf4j.LoggerFactory etc.).

UPDATE

If you want to stick with org.osgi.service.log.LoggerFactory then follow this:

Obtain the LoggerFactory instance:

public class Activator implements BundleActivator

{

    private volatile LoggerFactory loggerFactory;



    public void start(BundleContext context) throws Exception 

    {   

        ServiceReference ref = context.getServiceReference(LoggerFactory.class.getName());

        if (ref != null)

        {

            loggerFactory = (LoggerFactory) context.getService(ref);

        }

    }



    //..

Elsewhere in the bundle you can then use the LoggerFactory to get a Logger for any class:

Logger logger = loggerFactory.getLogger(Foo.class);

UPDATE2

A better alternative would be to get a reference who's service type is LoggerFactory like this:

@Reference(service = LoggerFactory.class)

private Logger logger;

edited Nov 22 '18 at 15:41

answered Nov 21 '18 at 9:49

user10639668

Here is the source code of org.osgi.service.log.LoggerFactory.

As you can see, it's an interface with no static methods therefore this code:

Logger log = LoggerFactory.getLogger(this.getClass());

is simply not valid.

To fix this use slf4j as front end (this means replace org.osgi.service.log.LoggerFactory import with org.slf4j.LoggerFactory etc.).

UPDATE

If you want to stick with org.osgi.service.log.LoggerFactory then follow this:

Obtain the LoggerFactory instance:

public class Activator implements BundleActivator

{

    private volatile LoggerFactory loggerFactory;



    public void start(BundleContext context) throws Exception 

    {   

        ServiceReference ref = context.getServiceReference(LoggerFactory.class.getName());

        if (ref != null)

        {

            loggerFactory = (LoggerFactory) context.getService(ref);

        }

    }



    //..

Elsewhere in the bundle you can then use the LoggerFactory to get a Logger for any class:

Logger logger = loggerFactory.getLogger(Foo.class);

UPDATE2

A better alternative would be to get a reference who's service type is LoggerFactory like this:

@Reference(service = LoggerFactory.class)

private Logger logger;

edited Nov 22 '18 at 15:41

answered Nov 21 '18 at 9:49

user10639668

edited Nov 22 '18 at 15:41

answered Nov 21 '18 at 9:49

user10639668

answered Nov 21 '18 at 9:49

user10639668

answered Nov 21 '18 at 9:49

user10639668

But I need to use this LoggerFactory/Logger to change from LogService (since LogService has been depreciated in 1.4) Please help. Thanks!

– Mel Sy Gallosa
Nov 21 '18 at 9:56

But I'll try using this. I hope it works.

– Mel Sy Gallosa
Nov 21 '18 at 10:00

Oh. I need to use plugins from eclipse only >_<

– Mel Sy Gallosa
Nov 21 '18 at 10:04

@MelSyGallosa See my updated answer

– user10639668
Nov 21 '18 at 10:06

1

@NeilBartlett Done.

– user10639668
Nov 22 '18 at 15:41

|
show 8 more comments

But I need to use this LoggerFactory/Logger to change from LogService (since LogService has been depreciated in 1.4) Please help. Thanks!

– Mel Sy Gallosa
Nov 21 '18 at 9:56

But I'll try using this. I hope it works.

– Mel Sy Gallosa
Nov 21 '18 at 10:00

Oh. I need to use plugins from eclipse only >_<

– Mel Sy Gallosa
Nov 21 '18 at 10:04

@MelSyGallosa See my updated answer

– user10639668
Nov 21 '18 at 10:06

1

@NeilBartlett Done.

– user10639668
Nov 22 '18 at 15:41

But I need to use this LoggerFactory/Logger to change from LogService (since LogService has been depreciated in 1.4) Please help. Thanks!

– Mel Sy Gallosa
Nov 21 '18 at 9:56

But I'll try using this. I hope it works.

– Mel Sy Gallosa
Nov 21 '18 at 10:00

Oh. I need to use plugins from eclipse only >_<

– Mel Sy Gallosa
Nov 21 '18 at 10:04

@MelSyGallosa See my updated answer

– user10639668
Nov 21 '18 at 10:06

@NeilBartlett Done.

– user10639668
Nov 22 '18 at 15:41

|
show 8 more comments

LoggerFactory is an OSGi service. You need to get it from the OSGi service registry. See my EclipseCon Europe 2018 presentation for more information.

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

add a comment |

LoggerFactory is an OSGi service. You need to get it from the OSGi service registry. See my EclipseCon Europe 2018 presentation for more information.

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

add a comment |

LoggerFactory is an OSGi service. You need to get it from the OSGi service registry. See my EclipseCon Europe 2018 presentation for more information.

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

LoggerFactory is an OSGi service. You need to get it from the OSGi service registry. See my EclipseCon Europe 2018 presentation for more information.

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

answered Nov 21 '18 at 14:21

BJ Hargrave

8,10111425

add a comment |

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