You might have seen the recent news reports about the collision between U.S. and Russian communication satellites. The U.S. satellite was one of the Iridium satellites. What wasn’t reported and you probably don’t know is that an object database management system (ODBMS) is an important part of the Iridium system. Even though ODBMSs are a [...]
February 13, 2009
I am now also posting on the Cutter Blog. My initial posting is (The Acronym) SOA is (Perhaps) Dead (at Some Companies); Long Live Services. It is a response to Anne Thomas Manes’ SOA is Dead; Long Live Services on her blog at the Burton Group.
January 9, 2009
The typical definition of an atomic task or process is one that cannot be decomposed further. This is vague and subject to interpretation. The Decomposition Matrix on this site uses a specific definition: A task (for business process diagrams) or a process (for data flow diagrams) is atomic if every input relates to every output [...]
December 3, 2008
My last posting referenced the criteria for a well-formed business process diagram mentioned in Business Process Driven SOA using BPMN and BPEL by Matjaz B. Juric and Kapil Pant. I am going to expand on their criteria to create a more comprehensive definition of a well-formed business process diagram. To start, here are three criteria [...]
November 18, 2008
I recently received two new books on business process modeling. Both books looked interesting because they had great titles. As it turns out, one book is great and the other not so good. The not so good book is Business Process Driven SOA using BPMN and BPEL by Matjaz B. Juric and Kapil Pant. There [...]
October 9, 2008
The Design Decomposition Blog is written by Doug Barry.
Message routers direct data from a requesting resource to a responding resource and back. These are also known as application brokers,
message brokers, or XML data routers. A router "knows" which of the other internal systems needs to receive a certain types of updates. The individual internal systems can pass updates to a router and would not need to know who receives such updates.
A message router usually needs to transform the data in some way in order to match the format of the data expected by the receiving system.
The following shows examples of such transformations. Internal system A at the left is sending data in tagged XML format. Internal system B at the right expects a tagged XML format, but expects the tags to be different. For example, instead of the tag <name> in system A, system B expects the data to be tagged with <customer>. The tags for phone and postal code data also are different. The message tag itself varies as well. At the left, the tag is <GetCustomerInfoResponse> and at the right, the tag is <GetCustomerAccount>.
Existing internal systems will most likely also need an adapter. See Web Services adapters for how a message router is shown with adapters.
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