Home » Archived » Service Oriented Architecture Tools Platform (STP) » Reusing SCA Service Implementations
Reusing SCA Service Implementations [message #620092] |
Wed, 01 October 2008 11:59 |
Eclipse User |
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Originally posted by: michael.gebhart.googlemail.com
Hi,
when using the SCA editor to create my service architecture, I can
easily implement services. I can write a java class and set it as the
implementation of a component.
My question is: Can I only use this implementation within a SCA runtime?
We have a typical application server running and don't wanna provide a
SCA runtime. But we'd like to use SCA for modeling the architecture.
Or do we have to manually adapt the implementation that it works within
a typical WS-compliant java application server?
Is the SCA way an alternative for the usual web service programming? Is
it still necessary to write the web services as we have done it before?
(Using JAX-WS etc.)
Greetings
Michael
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Re: Reusing SCA Service Implementations [message #620095 is a reply to message #620092] |
Wed, 01 October 2008 12:02 |
Eclipse User |
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Originally posted by: atoulme.intalio.com
Michael,
anything SCA related should be posted to the SCa newsgroup, that I added
to the to: list of this message.
If your message is both relevant to STP and SCA, you can send a message
to both newsgroups.
I hope it helps.
Antoine
Michael Gebhart wrote:
> Hi,
>
> when using the SCA editor to create my service architecture, I can
> easily implement services. I can write a java class and set it as the
> implementation of a component.
>
> My question is: Can I only use this implementation within a SCA runtime?
> We have a typical application server running and don't wanna provide a
> SCA runtime. But we'd like to use SCA for modeling the architecture.
>
> Or do we have to manually adapt the implementation that it works within
> a typical WS-compliant java application server?
>
> Is the SCA way an alternative for the usual web service programming? Is
> it still necessary to write the web services as we have done it before?
> (Using JAX-WS etc.)
>
> Greetings
>
> Michael
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Re: Reusing SCA Service Implementations [message #620096 is a reply to message #620092] |
Wed, 01 October 2008 12:48 |
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Hi Michael, all
Michael Gebhart a écrit :
> Hi,
>
> when using the SCA editor to create my service architecture, I can
> easily implement services. I can write a java class and set it as the
> implementation of a component.
Yes, it is easy to design composites and write implementations for
components with SCA editor.
> My question is: Can I only use this implementation within a SCA runtime?
> We have a typical application server running and don't wanna provide a
> SCA runtime. But we'd like to use SCA for modeling the architecture.
I think that the implementation you wrote does not depend on SCA
runtime, it only depends on SCA annotations (@Reference, @Property...),
but those annotation don't change your class logic, thus you can use
your classes out of SCA context (but you'll have to provide the jar
containing SCA references to resolve annotations).
But the question that comes to me ie "why don't you use a SCA runtime?".
I understand that there may be conflicts because with some
applications server, but it is worse trying...
> Or do we have to manually adapt the implementation that it works within
> a typical WS-compliant java application server?
I can't help you on this topic.
> Is the SCA way an alternative for the usual web service programming? Is
> it still necessary to write the web services as we have done it before?
> (Using JAX-WS etc.)
SCA is an alternative for generic (Java-friendly) service programming. I
often use it to expose WebServices simply by creating a java component
that exposes its service through a binding.ws, and it works quite well
without brainstorming:
<composite ...>
<component name="myComponent">
<implementation.java class="package.ServiceImpl" />
<service name="myService">
<interface.java interface="package.IService" />
<binding.ws uri="http://localhost:8081/endpoint" />
</service>
</component>
</composite>
Then, you have a web service published on localhost:8081/endpoint, and
your SCA runtime made everything necessary to get it working, you simply
wrote the composite, the interface, and the implementation (only
business code)
> Greetings
>
> Michael
Regards,
Mickael
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Re: Reusing SCA Service Implementations [message #620097 is a reply to message #620096] |
Wed, 01 October 2008 12:49 |
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Oops,
I clicked "Reply" without checking the forum.
Sorry for the spam...
Mickael
Mickael Istria a écrit :
> Hi Michael, all
>
> Michael Gebhart a écrit :
>> Hi,
>>
>> when using the SCA editor to create my service architecture, I can
>> easily implement services. I can write a java class and set it as the
>> implementation of a component.
>
> Yes, it is easy to design composites and write implementations for
> components with SCA editor.
>
>
>> My question is: Can I only use this implementation within a SCA
>> runtime? We have a typical application server running and don't wanna
>> provide a SCA runtime. But we'd like to use SCA for modeling the
>> architecture.
>
> I think that the implementation you wrote does not depend on SCA
> runtime, it only depends on SCA annotations (@Reference, @Property...),
> but those annotation don't change your class logic, thus you can use
> your classes out of SCA context (but you'll have to provide the jar
> containing SCA references to resolve annotations).
>
> But the question that comes to me ie "why don't you use a SCA runtime?".
> I understand that there may be conflicts because with some applications
> server, but it is worse trying...
>
>
>> Or do we have to manually adapt the implementation that it works
>> within a typical WS-compliant java application server?
>
> I can't help you on this topic.
>
>
>> Is the SCA way an alternative for the usual web service programming?
>> Is it still necessary to write the web services as we have done it
>> before? (Using JAX-WS etc.)
>
> SCA is an alternative for generic (Java-friendly) service programming. I
> often use it to expose WebServices simply by creating a java component
> that exposes its service through a binding.ws, and it works quite well
> without brainstorming:
>
> <composite ...>
> <component name="myComponent">
> <implementation.java class="package.ServiceImpl" />
> <service name="myService">
> <interface.java interface="package.IService" />
> <binding.ws uri="http://localhost:8081/endpoint" />
> </service>
> </component>
> </composite>
>
>
> Then, you have a web service published on localhost:8081/endpoint, and
> your SCA runtime made everything necessary to get it working, you simply
> wrote the composite, the interface, and the implementation (only
> business code)
>
>
>> Greetings
>>
>> Michael
>
> Regards,
> Mickael
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Re: Reusing SCA Service Implementations [message #620100 is a reply to message #620097] |
Wed, 01 October 2008 13:35 |
Stephane Drapeau Messages: 199 Registered: July 2009 |
Senior Member |
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Oops! Next time, I will use the refresh button before sending my message...
I agree with you Mickael.
Stéphane Drapeau
Obeo
Mickael Istria a écrit :
> Oops,
>
> I clicked "Reply" without checking the forum.
> Sorry for the spam...
>
> Mickael
>
> Mickael Istria a écrit :
>> Hi Michael, all
>>
>> Michael Gebhart a écrit :
>>> Hi,
>>>
>>> when using the SCA editor to create my service architecture, I can
>>> easily implement services. I can write a java class and set it as the
>>> implementation of a component.
>>
>> Yes, it is easy to design composites and write implementations for
>> components with SCA editor.
>>
>>
>>> My question is: Can I only use this implementation within a SCA
>>> runtime? We have a typical application server running and don't wanna
>>> provide a SCA runtime. But we'd like to use SCA for modeling the
>>> architecture.
>>
>> I think that the implementation you wrote does not depend on SCA
>> runtime, it only depends on SCA annotations (@Reference,
>> @Property...), but those annotation don't change your class logic,
>> thus you can use your classes out of SCA context (but you'll have to
>> provide the jar containing SCA references to resolve annotations).
>>
>> But the question that comes to me ie "why don't you use a SCA
>> runtime?". I understand that there may be conflicts because with some
>> applications server, but it is worse trying...
>>
>>
>>> Or do we have to manually adapt the implementation that it works
>>> within a typical WS-compliant java application server?
>>
>> I can't help you on this topic.
>>
>>
>>> Is the SCA way an alternative for the usual web service programming?
>>> Is it still necessary to write the web services as we have done it
>>> before? (Using JAX-WS etc.)
>>
>> SCA is an alternative for generic (Java-friendly) service programming.
>> I often use it to expose WebServices simply by creating a java
>> component that exposes its service through a binding.ws, and it works
>> quite well without brainstorming:
>>
>> <composite ...>
>> <component name="myComponent">
>> <implementation.java class="package.ServiceImpl" />
>> <service name="myService">
>> <interface.java interface="package.IService" />
>> <binding.ws uri="http://localhost:8081/endpoint" />
>> </service>
>> </component>
>> </composite>
>>
>>
>> Then, you have a web service published on localhost:8081/endpoint, and
>> your SCA runtime made everything necessary to get it working, you
>> simply wrote the composite, the interface, and the implementation
>> (only business code)
>>
>>
>>> Greetings
>>>
>>> Michael
>>
>> Regards,
>> Mickael
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