Weblog for the AMIS Technology corner
Posts tagged web service
Review of Oracle Service Bus 11g Development Cookbook (Packt Publishing) by Edwin Biemond, Guido Schmutz, Eric Elzinga et. al.
Feb 5th
Recently I gained access to an electronic copy of the just released Oracle Service Bus 11g Development Cookbook, written by five authors – all experts on OSB and three personal acquaintances of mine. I was very interested in learning about the final result after hearing many intermediate comments during the writing process as well as reading the occasional remark on Twitter. Knowing Guido, Eric and Edwin and assuming the same expert level for the other two authors, I anticipated a very interesting read.
Below I will share my impressions from browsing through this solid 500+ page volume. Note: the homepage for the book can be found here: http://www.packtpub.com/oracle-service-bus-11g-development-cookbook/book .
Business Validation in Oracle SOA Suite 11g using Schematron
Jan 5th
In a previous post I’ve explained the Schematron standard, how it works and how to use it. In the Oracle SOA Suite you can ‘Validate Semantic’ on the input (request) of a routing rule in a Mediator component by selecting a Schematron file. This is the Schemtron xml file in which you define your validation rules. The SOA Suite takes care of applying them on the request by executing the double transformation.
However, to be able to get the Schematron file working you need to declare the namespaces of the input message and rewrite a report rule to an assert rule. In this post I will show you how to do this with the same business rules (so the same Schematron rules and Schematron file) as the last example in a previous blog explaining Schematron.
Read the rest of this entry »
Difficulties with a more complex Business Rule Engine in Oracle SOA Suite
Dec 23rd
In my previous post I’ve shown how to create a composite in the Oracle SOA Suite with a simple decision table in a Business Rule Engine component. For that post I had used quite a simple data model resulting in a small xml/xsd tree. For our project I wanted to repeat the exercise with the real data model, so a larger xml tree defined by multiple imported xsd files. Unfortunately it wasn’t as easy as I hoped for. In this second blog post about the Business Rule Engine I’ll show you about the difficulties I had and how I’ve solved them. Read the rest of this entry »
Cookbook creating Business Rule Engine with a simple Decision Table in Oracle SOA Suite
Dec 13th
For educational purposes I’ve created a cookbook in powerpoint format on how to create a simple decision table in Oracle SOA Suite with a Business Rule engine.
To share this I’ve uploaded it to slideshare and post it here in the Amis blog as well. Read the rest of this entry »
Publishing the Product Details WebService based on an Excel based Product Catalog using the SOA Suite 11g File Adapter with Synchronous File Read
Nov 14th
On the one hand: the organization wants to publish a real Web Service, SOAP enabled and all. On the other: the data to be provided by this Web Service is maintained in Excel files and undergoes regular changes by people who are well versed in Excel but absolutely blank when it comes to Web Services.
This article demonstrates how the File Adapter can be used with a Composite application running in Oracle SOA Suite 11g to synchronously read from a file with product catalog details and return information about a single product for which the product identifier was sent to the service.
In just a few, largely declarative, steps, the bridge is built from file based article records to a real SOAP Web Service.
How to call a webservice directly from Java (without webservice library)
Jun 29th
In this blog I will show you how you can call a webservice programmatically in Java without using a webservice library like JAX-WS or Apache Axis. Normally you would use of course a webservice library, but in some cases this can be useful and quick; for example when you have problems generating a client proxy with a webservice library or if you only need some small specific parts of the SOAP response XML tree. It shows that a SOAP call is just XML over HTTP, from a plain piece of Java code. Then, I will show you an example how you can use this and make your own servlet webservice-tester like a simple SoapUI in JDeveloper 11.1.1.3.
How to remove unwanted SOAP header elements in JAX-WS
May 16th
In our current webservice project with JAX-WS in JDeveloper 11.1.1.3 we have a challenge with calling a webservice. This webservice from a remote organisation does not accept specific SOAP header elements our client application creates – although we followed the contract of the WSDL correctly. Of course this webservice must follow it as well as we have to, but for now we don’t have a choice but to make a workaround. How can we remove unwanted elements from a SOAP header? In this blog I will show you how you can do that using a JAX-WS SOAPHandler that inspects the SOAP header and removes specific addressing elements. Read the rest of this entry »
Hands-on: Synchronize your database from a webservice with JAX-WS and ADF Business Components
Mar 27th
This step-by-step starter hands-on provides an example how to make a JAX-WS webservice proxy in JDeveloper, and save retrieved data from this webservice in a batch-job to your own database with ADF Business Components.
Duration: 60 minutes.
For this hands-on example, imagine that your company wants to expand internationally and that reliable, up to date country information is absolutely critical. Recently there were some changes in the number of countries and there might be in the future. Since 1990, 33 new countries have been created. A few months ago the world welcomed a new country (South-Sudan) and yet we don’t know what will happen in Libya (maybe it will be separated in West and East-Libya?). Your company wants to weekly synchronise its internal countries database table with up-to-date country information from a recognised country-monitoring institution that delivers up-to-date country information by a webservice.
Part 1 – Create the country webservice client with JAX-WS
We are going to create a webservice client proxy for a country webservice available on: Read the rest of this entry »
Android puts Oracle on the (Google) map.
Mar 24th
For a couple of months I have been discovering the Android platform. As an original Oracle developer I was wondering how an Android app can be connected to an Oracle database.
For this purpose I developed an Android app that stores speed traps that users may hit while driving, into an Oracle database. The app also retrieves these speed traps from the database and draws them onto a Google map:
Fig. 1 After pressing the Android device’s menu button, two menu options ‘Retrieve’ and ‘Report’ (speed traps) appear.
Fig. 2 After pressing the ‘Retrieve’ option all speed traps already stored in the database appear as markers on the map.
Adding a custom method in an ADF BC Service Interface – update of a single attribute in a selected row
Dec 30th
The article “Quickly creating, deploying and testing a WebService interface for ADF Business Components” (http://technology.amis.nl/blog/9726/quickly-creating-reploying-and-testing-a-webservice-interface-for-adf-business-components) that I recently published describes a way of very rapidly creating the HRService Web Service – an ADF BC driven WebService on top of the EmployeesView ViewObject that exposes the EMPLOYEES table in the HR schema through the Employee EntityObject. However, that article’s true purpose is to show how to create the deployment profile and deploy and test this service, either on the integrated WLS or on a standalone WebLogic Server, in the easiest way possible. This article is an extension of the previous one: it demonstrates how to extend the Service Interface with a custom method (or an operation in terms of WebServices).
As it happens, I required an operation for updating just the salary of an Employee. I will show how I create a custom method in the Application Module’s implementation class, how I added this method to the Client Interface of the Application Module and subsequently to the Service Interface. After redeploying – using the same deployment profile that was created previously – we can test the updateSalary method as a new operation in the WebService.
