Unlike announced in my previous post this one is neither soon nor on a surprise topic. It is about a general aspect of Android that is, to my opinion, very powerful but often under utilized.
Android apps are not monolithic but rather a collection of components of different kinds. I suspect android took inspiration from the concept of midlet suites in j2me and believe it expanded on that quite well.
These components (except for provider) can be exposed through intent filters in the package’s manifest and can be used by other components in different packages. This allows apps to accomplish tasks together which a single app could never do.
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Filed under android, Middleware, SOA | 2 Comments »
In a previous blog I talked about the integration we’ve achieved between XebiaLabs’ Deployit and IBM’s Workload Deployer (still called WebSphere CloudBurst Appliance at the time) to allow users to deploy Java EE packages straight to a private cloud environment managed by IBM Workload Deployer. An IBM developerWorks article with more details is in the publishing queue. When it’s been published, I’ll post a link here. In this blog, I’d like to discuss another integration we’ve been working on.
IBM’s WebSphere DataPower appliances are a family of appliances that provide valuable services for SOA architectures such as XML acceleration (XA35), XML security (XS40) and data integration/ESB (XI50 ). While the DataPower appliances provide a powerful web-based management GUI, they are not easy to automate. The only command line available is an interactive command line that requires you to telnet into the appliance and the other way to automate the system is a SOAP/XML based API that requires quite a lot of coding.
Filed under Deployment, SOA, Xebia Labs | No Comments »
A flexible architecture can only come to its full potential when the organization itself is flexible. (more…)
Filed under Architecture, SOA | No Comments »
This Blog is a kick off to for many writings about architecture in an Agile World. We will explore the topic from all the views possible, in order to gain a better understanding about it. By doing so, we hope to create a community of followers, who would also like to contribute or discuss about this topic.
Xebia is helping many organizations in the Netherlands, France, the United States and India with implementing an agile way of system development. In most of the cases the Scrum method is applied and very good results are achieved. Business and IT are working much closer together, resulting in more quality and much more customer satisfaction. However, lately we also see a trend in problems that seem to occur in (almost) every organization. Software is developed in a fast way with high quality, but it takes forever to get it in production. The more teams are being formed, the more interdependencies between the teams occur (more…)
Tags: Agile, Architecture, Lean
Filed under Agile, Architecture, General, kanban, lean architecture, Requirements Management, Scrum, Scrum, SOA, Uncategorized | 2 Comments »
Last week I got a presentation for a security device I had never heard about.
Most times this means it is something which is not commodity, or has no real use-case.
But this time I was really impressed. The device is a possible replacement for IBM Datapower XML Security Gateway. But the way they designed the device is totally different.
What CrossCheck networks did was creating a device with just security as main use case. First of all it was an XML gateway, nowadays is does support HTML, XML, SOAP, FTP, JMS and others.
It also translates different flavors of JMS to each other, it can even convert from IBM MQ to JBoss MQ directly.
Tags: Architecture, esb, Middleware, SOA
Filed under Middleware, Security, SOA | 1 Comment »
Software vendors have hijacked a potentially useful concept by pushing heavy weight complex tools like ESBs. The goal of this article is to find out which of those tools we really need so we can stay away from unnecessary complexity. I’ll do that by describing the infrastructure services we really need and how these services can be implemented in the simplest possible way.
Software depends on other software because we don’t want to build systems from scratch. Each piece of software your code depends on may:
- change the address or name by which it is known
- change the technology it is implemented in
- be unavailable when you need it
- live on a different server or in the same process
- be connected through infrastructure that cannot be trusted
- speak a different language
(more…)
Tags: SOA
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How did we end up here?
Fifteen years ago, at the end of the two-tier client server age, people started to realize the importance of distinguishing between at least three different layers in the architecture. A business layer, providing a convenient API allowing you to address a particular business concern, a data layer storing related data, and a presentation layer providing a convenient user dialog on top of the business logic.
Filed under Architecture, SOA | 8 Comments »
It is very easy to create JMS consuming services in the Oracle Service Bus (previously known as BEA AquaLogic Service Bus or ALSB), but one of the things that you may want to control is the number of connections that is used to poll a JMS server. This blog describes the background to JMS listeners in OSB and how to solve problems with the JMS server being overloaded with connections. In this particular case, the JMS server is actually an IBM Websphere MQ server but most of the principles also apply to different JMS implementations.
Tags: esb, Middleware, Oracle, SOA
Filed under Middleware, SOA | 5 Comments »
This is not a rant against ESB. I am not saying that ESBs never have a purpose, nor suggest that it’s all just a scam. If – after having read this post – you got the impression that I suspect a conspiracy behind ESB, then I want to tell you up front that this is certainly not what I intended to say.
Tags: esb, integration, messaging, SOA, spring integration
Filed under Java, SOA | 12 Comments »
Sometimes a service bus is not sufficient for the job at hand. You can use EJB’s and JMS queues, but that might be overkill. That’s where a java callout might come to the rescue. This article will show you how to do a callout with ‘complex’ objects. On the bus you can pass around java objects or use them on the bus (this requires a small transformation step). I used the AquaLogic service bus version 10.2, but I think it should work any version that supports java callouts. The only difference can be the version of xmlbeans (AL 10.2 uses version 1.0.3)
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Tags: SOA
Filed under Java, SOA | 1 Comment »