@Ragith I checked out whole patch0007, couldn't build from the root(created
some dependency problems with "dependencies/orbit/axis2-json" module...
some relative path dependency pom files... i'm working on it nw ). So build
only "dependencies/axis2/modules/json" module, copy the generated jar to
the folder called 'patch0008'
under wso2dss-3.2.1/repository/components/patches Not "dependencies/orbit/
axis2-json".
@Shameera Thanks for asking that, problem is DSS json response is not
uniform, so not convenient for the consumer. As an example, for a given
select-query-operation there can be 3 types of responses.
1) There are no records.
{"Entries";""}
2) Only one record.
{"Entries":{"Entry":{"col1":"val1","col2":"val2"}}}
3) More than one records.
{"Entries":{"Entry":[{"col1":"val1","col2":"val2"},
{"col1":"val3","col2":"val4"}]}}
When consuming the service there are few validation checks we have to do.
No1 is partially OK, simple null check. But in No2 & No3, when we are
getting the value of key "Entry" we have to check whether is it an array of
objects or just an object, which i think is not convenient for the
consumer.
So I want to come up with a uniform type of response as below.
1) {"Entries":{"Entry":[]}}
2) {"Entries":{"Entry":[{"col1":"val1","col2":"val2"}]}}
3) {"Entries":{"Entry":[{"col1":"val1","col2":"val2"},
{"col1":"val3","col2":"val4"}]}}
Any thoughts?
On Mon, Jul 14, 2014 at 4:28 PM, Rajith Vitharana <raji...@wso2.com> wrote:
> Hi,
>
> I have tried with putting a jar file as a library to the
> repository/conf/lib folder. But it throws an exception when initializing
> axis2.xml file with class not found exception. Maybe axis2.xml get loaded
> before loading the classes in lib folder. Below is the exception which was
> thrown.
>
> [2014-07-14 16:24:48,583] FATAL
> {org.wso2.carbon.core.init.CarbonServerManager} - WSO2 Carbon
> initialization Failed
> org.apache.axis2.AxisFault: Exception occured while loading the Axis
> configuration from
> /media/rajith/Office/Wso2/team/product/wso2dss-3.2.1/repository/conf/axis2/axis2.xml
> at
> org.wso2.carbon.core.CarbonAxisConfigurator.getAxisConfiguration(CarbonAxisConfigurator.java:190)
> at
> org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContext(ConfigurationContextFactory.java:64)
> at
> org.wso2.carbon.core.CarbonConfigurationContextFactory.createNewConfigurationContext(CarbonConfigurationContextFactory.java:65)
> at
> org.wso2.carbon.core.init.CarbonServerManager.initializeCarbon(CarbonServerManager.java:398)
> at
> org.wso2.carbon.core.init.CarbonServerManager.start(CarbonServerManager.java:219)
> at
> org.wso2.carbon.core.internal.CarbonCoreServiceComponent.activate(CarbonCoreServiceComponent.java:77)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:347)
> at
> org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
> at
> org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
> at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
> at
> org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
> at
> org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
> at
> org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
> at
> org.eclipse.equinox.http.servlet.internal.Activator.registerHttpService(Activator.java:81)
> at
> org.eclipse.equinox.http.servlet.internal.Activator.addProxyServlet(Activator.java:60)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.init(ProxyServlet.java:40)
> at
> org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.init(DelegationServlet.java:38)
> at
> org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1267)
> at
> org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1186)
> at
> org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1081)
> at
> org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)
> at
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
> at
> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
> at
> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: org.apache.axis2.deployment.DeploymentException:
> org/apache/axis2/json/JSONMMyFormatter
> at
> org.apache.axis2.deployment.AxisConfigBuilder.processMessageBuilders(AxisConfigBuilder.java:775)
> at
> org.apache.axis2.deployment.AxisConfigBuilder.populateConfig(AxisConfigBuilder.java:236)
> at
> org.wso2.carbon.core.CarbonAxisConfigurator.populateAxisConfiguration(CarbonAxisConfigurator.java:308)
> at
> org.wso2.carbon.core.CarbonAxisConfigurator.getAxisConfiguration(CarbonAxisConfigurator.java:188)
> ... 42 more
> Caused by: java.lang.NoClassDefFoundError:
> org/apache/axis2/json/JSONMMyFormatter
> at
> org.wso2.training.custom.json.JSONMyBuilder.<init>(JSONMyBuilder.java:35)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> at java.lang.Class.newInstance0(Class.java:357)
> at java.lang.Class.newInstance(Class.java:310)
> at
> org.apache.axis2.deployment.DescriptionBuilder.processMessageBuilders(DescriptionBuilder.java:230)
> at
> org.apache.axis2.deployment.AxisConfigBuilder.processMessageBuilders(AxisConfigBuilder.java:772)
> ... 45 more
> Caused by: java.lang.ClassNotFoundException:
> org.apache.axis2.json.JSONMMyFormatter
> at
> org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
> at
> org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
> at
> org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
> at
> org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 54 more
>
>
> Thanks,
>
>
> On Mon, Jul 14, 2014 at 3:17 PM, Shameera Rathnayaka <shame...@wso2.com>
> wrote:
>
>> Hi Rajith,
>>
>> Why are you asking him to build the patches , can't he work on already
>> released DSs pack, Here i am trying to understand which issue Yasas trying
>> to address by implementing a new JSON builder and formatter, we have plenty
>> of Builders and formatters for JSON :) . May i know the real use case and
>> requirement ?
>>
>> Thanks,
>> Shameera
>>
>>
>> On Mon, Jul 14, 2014 at 2:51 PM, Rajith Vitharana <raji...@wso2.com>
>> wrote:
>>
>>> Hi Yasas,
>>>
>>> Try out creating a simple jar and put it in lib folder as shameera
>>> mentioned in above reply. I have tried out the scenario I have explained to
>>> you, and it worked fine for me
>>> As I mentioned, have you build the whole patch from the pom.xml inside
>>> patch0007 folder?
>>> and have you created "patch0008" folder and copied the
>>> jar(axis2-json-1.6.1-wso2v10.jar) inside
>>> "patch0007/dependencies/orbit/axis2-json/target"
>>> folder to the "patch0008" folder?
>>>
>>> Thanks,
>>>
>>>
>>>
>>> On Mon, Jul 14, 2014 at 1:50 PM, Shameera Rathnayaka <shame...@wso2.com>
>>> wrote:
>>>
>>>> Hi Yasas,
>>>>
>>>> For you ClassNotFoundException, check do your axis2-json jar has
>>>> required classes, BTW as i mentioned in previous reply you don't need to do
>>>> any code changes to axis2 jars in order to plug your custom builders.
>>>>
>>>> Thanks,
>>>> Shameera.
>>>>
>>>>
>>>> On Mon, Jul 14, 2014 at 1:36 PM, Yasas Karunarathna <
>>>> yasasm...@gmail.com> wrote:
>>>>
>>>>> Thank you for the quick responses. I checked in sources from both the
>>>>> locations
>>>>>
>>>>> https://svn.wso2.org/repos/wso2/carbon/kernel/branches/4.2.0/patches/patch0007/dependencies/axis2/modules/json/
>>>>>
>>>>> https://svn.wso2.org/repos/wso2/carbon/kernel/branches/4.2.0/dependencies/axis2/1.6.1-wso2v10/modules/json
>>>>>
>>>>> Separately build without any modifications, and put generated jar to
>>>>> patch8 folder. Once I restart the server following message shows in the
>>>>> console.
>>>>>
>>>>> "Could not start:
>>>>> null(reference:file:../plugins/axis2-json_1.6.1.wso2v10.jar:15). It's
>>>>> state
>>>>> is uninstalled."
>>>>>
>>>>> After that logs the following error.
>>>>>
>>>>> "Caused by: java.lang.ClassNotFoundException:
>>>>> org.apache.axis2.json.gson.JSONMessageHandler"
>>>>>
>>>>> Any work around?
>>>>>
>>>>>
>>>>>
>>>>> On Sun, Jul 13, 2014 at 11:30 PM, Shameera Rathnayaka <
>>>>> shame...@wso2.com> wrote:
>>>>>
>>>>>> Hi Yasas,
>>>>>>
>>>>>> Assuming you are going to customize the JSON mapped convention
>>>>>> (Standard Mapped Json support is their with Axis2),You don't need to do
>>>>>> anything to axis2 jar. Implement your new JSON builder and formatter,
>>>>>> then
>>>>>> create a new jar(or osgi bundle) using those new classes
>>>>>> and copy that jar ( or osgi bundle) to
>>>>>> <DSS_HOME>/repository/components/lib ( or
>>>>>> <DSS_HOME>/repository/components/dropings) directory. Finally, you need
>>>>>> to
>>>>>> configure your builder and formatter in axis2.xm configuration file (like
>>>>>> your 3rd step).
>>>>>>
>>>>>> Thanks,
>>>>>> Shameera.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Sun, Jul 13, 2014 at 10:35 PM, Rajith Vitharana <raji...@wso2.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi Yasas,
>>>>>>>
>>>>>>> The points you have mentioned are correct, but there are small
>>>>>>> changes I would like to point out. Below are the steps you'll need to
>>>>>>> follow to achieve your goal.
>>>>>>>
>>>>>>> 1 - There is a patch release for the "axis2-json" so you'll need to
>>>>>>> check out the source from [1] instead of the svn location you have
>>>>>>> mentioned. (checkout the whole "patch0007" instead of json module, so
>>>>>>> that
>>>>>>> it'll be easy for you to build the source.)
>>>>>>> 2 - Add the classes you need to the source.
>>>>>>> You'll need to extend AbstractJSONMessageFormatter in your
>>>>>>> custom formatter class
>>>>>>> You'll need to extend AbstractJSONOMBuilder in you custom
>>>>>>> builder class
>>>>>>> 3 - Build the whole patch0007. Then go to
>>>>>>> "patch0007/dependencies/orbit/axis2-json/target" folder where you can
>>>>>>> find
>>>>>>> the osgi bundle created from "axis2-json" module.
>>>>>>> 4 - Create "patch0008" folder inside
>>>>>>> "DSS_HOME/repository/components/patches" folder and copy the osgi bundle
>>>>>>> you found in step 3 to that folder.
>>>>>>> 5 - Add "messageFormatter" and "messageBuilder" elements to the
>>>>>>> "DSS_HOME/repository/conf/axis2/axis2.xml" as you have pointed out in
>>>>>>> your
>>>>>>> step 3.
>>>>>>> 6 - Restart the server and invoke your service adding "Accept"
>>>>>>> request header to the request with new content type you mentioned in
>>>>>>> "axis2.xml", example would be "Accept:application/json/newformat".(You
>>>>>>> can find sample of how to do it in [2])
>>>>>>>
>>>>>>> [1] -
>>>>>>> https://svn.wso2.org/repos/wso2/carbon/kernel/branches/4.2.0/patches/patch0007/dependencies/axis2/modules/json/
>>>>>>> [2] -
>>>>>>> http://janakaranabahu.blogspot.com/2013/06/return-json-response-from-wso2-dss.html
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>>
>>>>>>> On Sun, Jul 13, 2014 at 1:45 PM, Yasas Karunarathna <
>>>>>>> yasasm...@gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi there,
>>>>>>>>
>>>>>>>> I want to do a small change to the json response returned from DSS
>>>>>>>> 3.2.1. I'm using JSONMessageFormatter & JSONOMBuilder in
>>>>>>>> org.apache.axis2.json package.(not gson implementations)
>>>>>>>> My requirements are as follows
>>>>>>>>
>>>>>>>> 1) Implement new JSONMessageFormatter, JSONOMBuilder etc.
>>>>>>>> And additional method accepting the Mapped json response and
>>>>>>>> format it accordingly, call it at the end of mapped json conversion.
>>>>>>>> 2) Build axis2-json-1.6.1-wso2v10.jar adding new classes.
>>>>>>>> I think this is the source used in DSS 3.2.1 :
>>>>>>>> https://svn.wso2.org/repos/wso2/carbon/kernel/branches/4.2.0/dependencies/axis2/1.6.1-wso2v10/modules/json
>>>>>>>>
>>>>>>>> 3) State new Formatter and Builder in axis2.xml & call it with new
>>>>>>>> header
>>>>>>>> <messageFormatter contentType="application/json/newformat"
>>>>>>>>
>>>>>>>> class="org.apache.axis2.json.newJSONMessageFormatter"/>
>>>>>>>>
>>>>>>>> <messageBuilder contentType="application/json/newformat"
>>>>>>>>
>>>>>>>> class="org.apache.axis2.json.newJSONOMBuilder"/>
>>>>>>>> Can anybody advice me on achieving the above requirements?
>>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> *Yasas Karunarathna*
>>>>>>>> yasasblog.wordpress.com
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Dev mailing list
>>>>>>>> Dev@wso2.org
>>>>>>>> http://wso2.org/cgi-bin/mailman/listinfo/dev
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Rajith Vitharana
>>>>>>>
>>>>>>> Software Engineer,
>>>>>>> WSO2 Inc. : wso2.com
>>>>>>> Mobile : +94715883223
>>>>>>> Blog : http://lankavitharana.blogspot.com/
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Dev mailing list
>>>>>>> Dev@wso2.org
>>>>>>> http://wso2.org/cgi-bin/mailman/listinfo/dev
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> *Software Engineer - WSO2 Inc.*
>>>>>> *email: shameera AT wso2.com <shame...@wso2.com> , shameera AT
>>>>>> apache.org <shame...@apache.org>*
>>>>>> *phone: +9471 922 1454 <%2B9471%20922%201454>*
>>>>>>
>>>>>> *Linked in : *
>>>>>> http://lk.linkedin.com/pub/shameera-rathnayaka/1a/661/561
>>>>>> *Twitter : *https://twitter.com/Shameera_R
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> Thanks
>>>>>
>>>>>
>>>>>
>>>>> *Yasas Karunarathna*
>>>>> yasasblog.wordpress.com
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> *Software Engineer - WSO2 Inc.*
>>>> *email: shameera AT wso2.com <shame...@wso2.com> , shameera AT
>>>> apache.org <shame...@apache.org>*
>>>> *phone: +9471 922 1454 <%2B9471%20922%201454>*
>>>>
>>>> *Linked in : *http://lk.linkedin.com/pub/shameera-rathnayaka/1a/661/561
>>>> *Twitter : *https://twitter.com/Shameera_R
>>>>
>>>
>>>
>>>
>>> --
>>> Rajith Vitharana
>>>
>>> Software Engineer,
>>> WSO2 Inc. : wso2.com
>>> Mobile : +94715883223
>>> Blog : http://lankavitharana.blogspot.com/
>>>
>>
>>
>>
>> --
>> *Software Engineer - WSO2 Inc.*
>> *email: shameera AT wso2.com <shame...@wso2.com> , shameera AT apache.org
>> <shame...@apache.org>*
>> *phone: +9471 922 1454 <%2B9471%20922%201454>*
>>
>> *Linked in : *http://lk.linkedin.com/pub/shameera-rathnayaka/1a/661/561
>> *Twitter : *https://twitter.com/Shameera_R
>>
>
>
>
> --
> Rajith Vitharana
>
> Software Engineer,
> WSO2 Inc. : wso2.com
> Mobile : +94715883223
> Blog : http://lankavitharana.blogspot.com/
>
--
Thanks
*Yasas Karunarathna*
yasasblog.wordpress.com
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