Best practice for consuming web services

Hi
we are consuming web service in orchestration by "Add Generated Item".By using this option it creates 1 orch,1xsd file and some bindings.
we have different projects for schemas,maps and orchestration under our solution in visual studio.
Now i need to know that what will be the best practice for consuming web service in orchestration i mean in which project should i use "add generated item" (in orchstration project or in schemas project) coz it generates both 1 orch and 1
schema.
thanks

From a service orientation perspective you should abstract the service artifacts from the other artifacts. Otherwise it will be very difficult to update the service interface without affecting the other artifacts. For example you don't want to have to redeply
your entire application if only one field changes in the service you consume.
So I typically generate the items, remove the unnecessary stuff, and put them in a separate project.
Depending on the control you have over the services you want to consume, it would even be better to create another layer of abstraction. By that I mean create your own interface (schema) and map that one to the one the service exposes. This basically
is only necessary if you consume external services that are beyond your control. By abstracting the interface it exposes, you limit the impact of changes of that interface on the rest of your system. All changes are abstracted behind your own interface.
If you consume internal services, you can probably control the way the interface is defined. In a service oriented world all internal services expose a well known interface, based on the domain objects you have within your organisation.
Jean-Paul Smit | Didago IT Consultancy
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Twitter | LinkedIn
MCTS BizTalk 2006/2010 + Certified SOA Architect
Please indicate "Mark as Answer" if this post has answered the question.

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Defining agent for each?
Gateway for all?
BPEL security extension?
The top level service that is defined as business process is secure itself through OWSM and username and passwords, but what is the best practice for security establishment for each low level services?
Regards
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It doesnt matter whether the service is invoked as part of your larger process or not, if it is performing any business critical operation then it should be secured.
The idea of SOA / designing services is to have the services available so that it can be orchestrated as part of any other business process.
Today you may have secured your parent services and tomorrow you could come up with a new service which may use one of the existing lower level services.
If all the services are in one Application server you can make the configuration/development environment lot easier by securing them using the Gateway.
Typical probelm with any gateway architecture is that the service is available without any security enforcement when accessed directly.
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What is the best practice for developing web service?

Hi All,
I'm a newbee to web services...
I was wondering what would be the best approach in developing a web service,
using tools or programmatic approach?
If I use WebLogic Workshop, am I tied to a vendor?
Is it possible for me to develop web services using workshop and deploy in
another app server..?
I would appreciate if somebody could give me a pointer to start.
I have already referred BEA's docs.
I'm still confused on a good starting point on the best approach to develop
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Thanks in advance for any inputs.
K K

K K-
You have a very valid point on the simplify or complicate matters. If you are
going for clean and not-so-time-centric code, then there are several different
programs and packages out there you can choose from.
Since you are specialized in J2EE, than the Sun package may be what you are looking
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If you are asking for more detailed, coding 'Design Patterns' to utilize, I would
wait for a few more posts from other folks as my work often requires me to utilize
the tools provided.
Sincerely,
Eric Ballou
"K K" <[email protected]> wrote:
Eric,
Thanks for the response.
I was also looking at Sun's WSDP 1.1, which is more programmatic approach.
Some how, I feel being a J2EE developer, I should go on the direction
of the
programmatic approach.
Using the tools could simplify or complicate things. Also, the Workshop
samples import all weblogic specific packages.
My code looks so dirty with many vendor specific packages being imported.
Could you give me your suggestions for a clean and neat approach?
I would personally prefer to avoid the quick and dirty approach.
Thanks again.
"Eric Ballou" <[email protected]> wrote in message
news:[email protected]...
K K-
The best approach in developing portable web services is knowing whatyou
are
planning on using them for as well as how much is willing to be spent,etc.
BEA's Workshop is portable to other frameworks, but the ease ofintegrating a
developed client or a developed server can very greatly. Even moreof an
issue
is migration from one framework to another. If you choose to developin
Workshop
and your company later deploys .Net solutions, some of your work mayhave
to be
redone unless the company is willing to keep portions of the 'old'system
around
until new versions of the service are available. However, Workshophas
several
ant tools available that would assist you in deploying to other appservers or
even a stand-alone application should you need cross framework abilities.
If you are just starting out in web services, http://www.webservices.org
is a
good place to start checking out vendors in the space.
Sincerely,
Eric Ballou
"K K" <[email protected]> wrote:
Hi All,
I'm a newbee to web services...
I was wondering what would be the best approach in developing a web
service,
using tools or programmatic approach?
If I use WebLogic Workshop, am I tied to a vendor?
Is it possible for me to develop web services using workshop and deploy
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I would appreciate if somebody could give me a pointer to start.
I have already referred BEA's docs.
I'm still confused on a good starting point on the best approach todevelop
protable web services.
Thanks in advance for any inputs.
K K

Pros & Cons for consuming web services in ABAP using ABAP PROXY

Hi,
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Thanks.

<i> is there any other way to consume web services in ABAP</i>
you can use cl_http_client class to make your program to act as http client and post the soap message too webservice. This way you dont need to generate proxy, but you should know the soap message format.
Regards
Raja

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Hi all;
I was talking with a Sql Server expert today and learned that Azure Sql Server can take up to a minute to respond to a query that normally takes a fraction of a second. This is one of those things where it's really valuable to learn it when architecting as
opposed to when we go live.
Cloud Services are not Sql Server (obviously) but that led to the question - Is there a list of best practices for Azure Cloud Services? If so, what are they?
We will be placing the cloud services in multiple datacenters and using traffic manager to point people to the right one. The cloud service will set between an IMAP client & server, pretending to be the mail client to the server, and the server to the client.
Mostly it will pass all requests & responses across from one to the other.
thanks - dave
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hi dave,
>>Cloud Services are not Sql Server (obviously) but that led to the question - Is there a list of best practices for Azure Cloud Services? If so, what are they?
For this issue, I have collected some blogs and document about best practices for azure cloud service, you can view them, but I am not sure they are your need.
http://msdn.microsoft.com/en-us/library/azure/xx130451.aspx
http://gauravmantri.com/2013/01/11/some-best-practices-for-building-windows-azure-cloud-applications/
http://www.hanselman.com/blog/CloudPowerHowToScaleAzureWebsitesGloballyWithTrafficManager.aspx
http://msdn.microsoft.com/en-us/library/azure/jj717232.aspxhttp://azure.microsoft.com/en-us/documentation/articles/best-practices-performance/
>>The cloud service will set between an IMAP client & server, pretending to be the mail client to the server, and the server to the client. Mostly it will pass all requests & responses across from one to the other.
For your scenarioes, If you'd like to communicate with each instances, I recommend you refer to this document (
http://msdn.microsoft.com/en-us/library/azure/hh180158.aspx ). And generally, if we want connect the client to server on Azure, the service bus is a good choice (http://azure.microsoft.com/en-us/documentation/articles/cloud-services-dotnet-multi-tier-app-using-service-bus-queues/
If I misunderstood, please let me know.
Regards,
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Code for consuming web services in ABAP

*& Report ZVM_GET_CITY_TIME
REPORT zvm_get_city_time.
PARAMETERS:
p_city TYPE zget_city_time_soap_in-city.
DATA:
cl_proxy TYPE REF TO zco_time_service_soap,
input    TYPE zget_city_time_soap_in,
output   TYPE zget_city_time_soap_out,
systerr TYPE REF TO cx_ai_system_fault,
w_error TYPE c.
TRY.
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CATCH cx_ai_system_fault.
    CREATE OBJECT systerr.
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ENDTRY.
TRY.
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      IMPORTING
        output = output.
CATCH cx_ai_system_fault.
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ENDTRY.
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SKIP.
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<i> is there any other way to consume web services in ABAP</i>
you can use cl_http_client class to make your program to act as http client and post the soap message too webservice. This way you dont need to generate proxy, but you should know the soap message format.
Regards
Raja

What is best practice for calling XI Services with Web Dynpro-Java?

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HI Bob,
As sometimes when you create a model using a local wsdl file then instead of refering to URL mentioned in wsdl file it refers to say, "C:\temp" folder from where you picked up that file. you can check target address of logical port. Due to this when you deploy application on server it try to search it in "c:\temp" path instead of it path specified at soap:address location in wsdl file.
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like http://<IP>:<PORT>/XISOAPAdapter/MessageServlet?channel<xirequest>
or you can ask you XI developer to give url for webservice and username password of server

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hi ,
i have rmi solution client server
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maybe can do it in static block
Example : static {
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then consume the service
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Esentially both.
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Consuming Web Services in 11.2 does not work (UTL_DBWS)

Hello
i read some documents for consuming web services on the internet , but i get an error when i call add_numbers function as follows:
i connected on WSUSER , then
SQL> select add_numbers(1,3) from dual;
The Error message is:
ERROR at line 1:
ORA-29532: Java call terminated by uncaught Java exception:
java.lang.IllegalAccessException: java.lang.ExceptionInInitializerError
ORA-06512: at "WSUSER.UTL_DBWS", line 193
ORA-06512: at "WSUSER.UTL_DBWS", line 190
ORA-06512: at "WSUSER.ADD_NUMBERS", line 25"
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3-     Execute this command
loadjava -u scott/tiger -r -v -f -genmissing dbwsclientws.jar dbwsclientdb11.jar
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execute dbms_java.grant_permission('WSUSER','SYS:java.util.PropertyPermission','http.proxyHost', 'write');
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execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission', 'accessClassInPackage.sun.util.calendar','');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission','getClassLoader','');
execute dbms_java.grant_permission('WSUSER','SYS:java.net.SocketPermission','*','connect,resolve');
execute dbms_java.grant_permission('WSUSER','SYS:java.util.PropertyPermission','*','read,write');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission','setFactory','');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission', 'createClassLoader', '' )
5-     Create add_numbers function on wsuser to test utl_dbws:
CREATE OR REPLACE FUNCTION add_numbers (p_int_1 IN NUMBER,
p_int_2 IN NUMBER)
RETURN NUMBER
AS
l_service UTL_DBWS.service;
l_call UTL_DBWS.call;
l_wsdl_url VARCHAR2(32767);
l_namespace VARCHAR2(32767);
l_service_qname UTL_DBWS.qname;
l_port_qname UTL_DBWS.qname;
l_operation_qname UTL_DBWS.qname;
l_xmltype_in SYS.XMLTYPE;
l_xmltype_out SYS.XMLTYPE;
l_return NUMBER;
BEGIN
l_wsdl_url := 'http://www.oracle-base.com/webservices/server.php?wsdl';
l_namespace := 'http://www.oracle-base.com/webservices/';
l_service_qname := UTL_DBWS.to_qname(l_namespace, 'Calculator');
l_port_qname := UTL_DBWS.to_qname(l_namespace, 'CalculatorPort');
l_operation_qname := UTL_DBWS.to_qname(l_namespace, 'ws_add');
l_service := UTL_DBWS.create_service (
wsdl_document_location => URIFACTORY.getURI(l_wsdl_url),
service_name => l_service_qname);
l_call := UTL_DBWS.create_call (
service_handle => l_service,
port_name => l_port_qname,
operation_name => l_operation_qname);
l_xmltype_in := SYS.XMLTYPE('<?xml version="1.0" encoding="utf-8"?>
<ws_add xmlns="' || l_namespace || '">
<int1>' || p_int_1 || '</int1>
<int2>' || p_int_2 || '</int2>
</ws_add>');
l_xmltype_out := UTL_DBWS.invoke(call_Handle => l_call,
request => l_xmltype_in);
UTL_DBWS.release_call (call_handle => l_call);
UTL_DBWS.release_service (service_handle => l_service);
l_return := l_xmltype_out.extract('//return/text()').getNumberVal();
RETURN l_return;
END;
6-     Test the function
Select add_numbers(1,2) from dual
on the test i get the error message :
ERROR at line 1:
ORA-29532: Java call terminated by uncaught Java exception:
java.lang.IllegalAccessException: java.lang.ExceptionInInitializerError
ORA-06512: at "WSUSER.UTL_DBWS", line 193
ORA-06512: at "WSUSER.UTL_DBWS", line 190
ORA-06512: at "WSUSER.ADD_NUMBERS", line 25
anyone have an idea to resolve this error .
thanks alot

Hi.
Looking at the code, it seems it is my article you are asking about.
http://www.oracle-base.com/articles/10g/utl_dbws10g.php
I've just run through it on an 11.2 instance and it works fine for me.
Make sure your server has access to the Internet and make sure the java classes are loaded successfully.
Cheers
Tim...

How to Consume Web Service?

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In this Function Create to write the code to consume web service created by third party.
Then get the Data from there and uodate SAP
Can u plz help me with the Steps Involved in this?

Hi Mohsin,
Please chk this link once for consuming web services..
http://help.sap.com/saphelp_nw70/helpdata/en/bf/d005244e9d1d4d92b2fe7935556b4c/frameset.htm
http://help.sap.com/saphelp_nw04/Helpdata/EN/b4/6aae409567942ae10000000a155106/content.htm.
U shuld have authorizations for tcodes WSADMIN and SOAMANAGER for creating web services
Hope it will be useful..
Regards,
Lakshman.
Edited by: Lakshman N on Jan 13, 2009 12:06 PM

Best practice for integrating oracle atg with external web service

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With Thanks & Regards
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Using Integration Repository might cause performance overhead based on the operation you are doing, I have never used Integration Repository for 3rd Party integration therefore I am not able to make any comment on this.
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Edited by: Rajeev_R on Apr 29, 2013 3:49 AM

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Hello all.
I have deployed a web service using a java class as back end.
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It doesnt matter whether the service is invoked as part of your larger process or not, if it is performing any business critical operation then it should be secured.
The idea of SOA / designing services is to have the services available so that it can be orchestrated as part of any other business process.
Today you may have secured your parent services and tomorrow you could come up with a new service which may use one of the existing lower level services.
If all the services are in one Application server you can make the configuration/development environment lot easier by securing them using the Gateway.
Typical probelm with any gateway architecture is that the service is available without any security enforcement when accessed directly.
You can enforce rules at your network layer to allow access to the App server only from Gateway.
When you have the liberty to use OWSM or any other WS-Security products, i would stay away from any extensions. Two things to consider
The next BPEL developer in your project may not be aware of Security extensions
Centralizing Security enforcement will make your development and security operations as loosely coupled and addresses scalability.
Thanks
Ram

Best practice for consuming web services

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