http://www.spamer.me.uk/wiki/ 2010-09-08T18:02:03+01:00 http://www.spamer.me.uk/wiki/ http://www.spamer.me.uk/wiki/lib/images/favicon.ico text/html 2010-04-01T13:59:01+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/wiki_doku.php?rev=1270126741&do=diff * information technology systems governance * Batch Process Architecture Patterns * Client Server Architecture Patterns * N-Tier Architecture Patterns * Peer to Peer Architecture Patterns * Service Oriented Architecture Patterns Service Oriented Architecture (SOA) * UML Profile for a Service Oriented Architecture * Service Oriented Architecture Overview text/html 2009-10-25T23:57:34+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/oo_strawman_myths?rev=1256515054&do=diff There is an anti-OO troll who's rant about OO seem to be gaining some traction. His arguments are mostly strawmen (despite his claims otherwise) by somebody who clearly has little grasp what OO is about. I guess he is frightened and fearful for his prospects because he is unable to make the paradigm shift. The clearest evidence of this are the Myths; an OO authority would never proclaim many of these, some just don't make sense, some are 'clearly' miss-quotes or misrepresentations of what OO a… text/html 2009-10-25T23:44:16+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/continuous_integration?rev=1256514256&do=diff * Source Control * Continuous Commitment * Automated Build * Automated Unit Testing * Automated Deployment to test environment * Test Environment is clone of live environment. * Production Like Test * Dashboard - Automated Status reporting to all interested / Relevant parties text/html 2009-10-25T23:12:56+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/engineering_principle?rev=1256512376&do=diff Engineering is the application of the scientific method to the solving real world problems. - understand the fundamental principles underlying problem domain design. - plan and write the solution within the specified requirements and to a professional standard. - employ formal methods to produce effective solution to specific requirements. - develop structured solution sets of simple user-defined classes usinb Object-Oriented principles to achieve overall programming goals. - develop reasoned j… text/html 2009-10-25T22:59:50+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/scientific_method?rev=1256511590&do=diff Applying the scientific method to software development * create a model describing your subject domain, * develop a hypotheses (Solution) using the model, * run experiments (tests) to validate hypotheses, * refine model and repeat text/html 2009-10-25T22:57:27+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/soa_fan_in?rev=1256511447&do=diff text/html 2009-10-25T22:55:12+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/soa_fan_out?rev=1256511312&do=diff text/html 2009-10-25T22:54:49+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/soa_pipe_line?rev=1256511289&do=diff text/html 2009-10-25T22:29:52+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/only_constant_is_change?rev=1256509792&do=diff During the life cycle of your project you can be sure that :- * Your requirements will change. * Your environment will change. * Your users will change. * Your platform will change. * Your team will change. * Your software will change. text/html 2009-10-25T22:19:46+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/risk_factors?rev=1256509186&do=diff "Eating the Elephant in one sitting" Attempting to deliver a new software system in a single phase is a dangerous practice; big projects = big bang = big risks. Professionals Software Engineers needs to constantly manage mitigate risk; which avoiding analysis paralysis and feature creep. text/html 2009-10-25T22:18:32+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/start?rev=1256509112&do=diff * information technology systems governance * Batch Process Architecture Patterns * Client Server Architecture Patterns * N-Tier Architecture Patterns * Peer to Peer Architecture Patterns * Service Oriented Architecture Patterns Service Oriented Architecture (SOA) * UML Profile for a Service Oriented Architecture * Service Oriented Architecture Overview text/html 2009-10-25T22:18:12+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/development_risk?rev=1256509092&do=diff Risk Types Requirements Risk * Do we fully understand the requirements ? * Are the requirements fully documented ? Skills Risk * Do we have the skills in house? * Can we train the skills * Can we recruit the skills ? * Are the skills common and mundane or rare and unusual ? text/html 2009-10-25T22:10:59+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/service_oriented_architecture_overview?rev=1256508659&do=diff A service oriented architecture is an approach to the construction of a software system through the integration of loosely coupled software components called services. A Service is a discrete Software Component capable of providing specific discrete business functionality. text/html 2009-10-06T20:47:25+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/uml_profile_for_a_service_oriented_architecture?rev=1254858445&do=diff UML Profile for a Service Oriented Architecture for use with Sparx Enterprise Architect, download SOA-Profile.xml and Save-As. In Enterprise Architect select Resources -> UML Profile -> Import Profile. Once loaded into EA you can apply stereotypes from the profile to your design. text/html 2009-09-27T22:28:45+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/misc_butterfly?rev=1254086925&do=diff An insight into Mentoring & coaching One day a man finds a cocoon for a butterfly with a small opening, he sits and watches the butterfly for several hours as it struggled to force its body through the little hole. Then it seemed to stop making any progress. It appeared stuck. text/html 2009-09-24T21:13:01+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/n-tier_architecture_patterns?rev=1253823181&do=diff N-Tier Architecture Patterns Array Array text/html 2009-09-24T21:04:21+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/client-server_architecture_patterns?rev=1253822661&do=diff Client Server Architecture Patterns Array text/html 2009-09-24T18:52:26+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/oo_jdbc_connection_pools_unsafe?rev=1253814746&do=diff The conventional setup for a JDBC connection to database is through the use of connection pooling within the Application Server / Web Container or through an Application configuration files. These approach require the proliferation of access credentials information (username and password) to be widely distributed than acceptable by a Security Governance Policy. A configuration file or in any other standard readable location. text/html 2009-09-24T18:38:04+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/service_oriented_architecture_patterns?rev=1253813884&do=diff Service Oriented Architecture Patterns text/html 2009-09-24T18:37:35+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/peer-to-peer_architecture_patterns?rev=1253813855&do=diff Peer to Peer Architecture Patterns text/html 2009-09-24T18:35:54+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/batch_process_architecture_patterns?rev=1253813754&do=diff Batch Process Architecture Patterns text/html 2009-09-24T18:33:46+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/oo_java_class_factory?rev=1253813626&do=diff String Parameterised Class Factory. Class.forName( className ).newInstance(); text/html 2009-09-24T18:31:01+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/oo_java_unreachable_host?rev=1253813461&do=diff Loading a resource (property file, xml, xslt, image etc) from deployment jar file. this.getClass().getClassLoader().getResourceAsStream( ... ) ; text/html 2009-09-24T14:18:59+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/ip_tcp?rev=1253798339&do=diff Transmission Control Protocol / Internet Protocol * TCP is a connection oriented protocol. The meaning for connection establishment is that client and server make sure there identity to each other through a well define 3 way handshake. * During handshake they ensure there data handling capacity by sending there Maximum Transmission Unit (MTU) size to each other. * Both client and server send there packet sequence number to each other. * TCP ensure the reliable data transfer through ac… text/html 2009-09-24T14:16:47+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/ip_udp?rev=1253798207&do=diff User Datagram Protocol over Internet Protocol. UDP is a “connectionless” protocol UDP has no explicit provision for acknowledgement of packets received. (Sometimes mistakenly called unreliable datagram protocol). * UDP is connection less data transfer, it means there will not be any handshake between peers. Server will listen at some port and accept the packet to the port from any client. * Unreliable data transfer, there is no acknowledge for data. * UDP packet may take any path to re… text/html 2009-09-24T14:00:48+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/ip_unicast?rev=1253797248&do=diff Point to Point transmission of data over the internet is IP Unicast. text/html 2009-09-24T13:55:35+01:00 Martin Spamer http://www.spamer.me.uk/wiki/doku.php/ip_multicast?rev=1253796935&do=diff In most situations Internet applications utilise unicast packets for transporting information directly from one point to point. Unicast is used for browsing the web with HTTP, fetching files with FTP or email delivery SMTP. The internet protocol stack provides another method of distributing data to multiple destinations, multicast. text/html 2009-09-22T20:52:28+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/xml_document_design?rev=1253649148&do=diff When designing XML Document we are faced with the question of which parts of the data should be held in an attribute and which parts in an element. Canonical data should be held within elements. IF the data is Metadata about the canonical should be held within attributes. text/html 2009-09-22T20:24:27+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/oo_java_encapsulate_state_with_memento?rev=1253647467&do=diff The purpose of the memento pattern is to encapsulate state. class Memento { private State state; public Memento(State stateToSave) { state = stateToSave; } public State getSavedState() { return state; } } When I use the Command Pattern, I combine it with the memento pattern. text/html 2009-09-22T18:54:10+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/information_technology_systems_governance?rev=1253642050&do=diff Governance of information technology system is about the development of processes, procedures and practice that ensure that the development and managament of system complies with an organisations policy. The question of how you might achieve an effective governance for live systems requires a comprehensive information system technology strategy with a firm commitment and backing of the most senior executive. text/html 2009-09-22T18:52:47+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_information_security_classification?rev=1253641967&do=diff Information Security Classification defines the sensitivity of information, assigns a level of protection and authority commensurate with the sensitivity. Benefits: A comprehensive Information Security Classification program will prevent inadvertent disclosure of sensitive and/or classified information. text/html 2009-09-22T18:50:12+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_business_continuity_planning_disaster_recovery?rev=1253641812&do=diff Development of Plans for mission critical systems first, working through less critical systems and new systems during development. Benefits: Disaster Recovery plans permit rapid and effective response to mitigate business exposures and impacts text/html 2009-09-22T18:49:34+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_personnel_security?rev=1253641774&do=diff Working with Human Resources Division in the areas of security screening and emergency management Benefits: Prevent security incidents from occurring through malpractice and negligence. text/html 2009-09-22T18:48:39+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_physical_security?rev=1253641719&do=diff Working with Human Resources Division in the areas of security screening and emergency management Benefits: Prevent security incidents from occurring through malpractice and negligence. text/html 2009-09-22T18:44:29+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_security_policy?rev=1253641469&do=diff Development of programme wide IS & IT security policy, including operationing procedures, standards and best practices. Benefits: Clear consistent security policies and procedures aid to prevent security incidents from occurring. text/html 2009-09-22T18:43:47+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_risk_awareness?rev=1253641427&do=diff Develop security awareness through training. Benefits: Employees possess the knowledge to operate in a secure manner can prevent security incidents from occurring. text/html 2009-09-22T18:42:32+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_information_technology_security?rev=1253641352&do=diff Public Key Infrastructure (PKI): Public Key Infrastructure for electronic authentication and authorisation service Benefits: PKI is used to prevent unauthorised access to applications, systems and assets. text/html 2009-09-22T18:40:22+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_threat_risk_assessment?rev=1253641222&do=diff Assessments should be mandated for all systems, address critical systems first, working through less critical systems, assess new systems during development. Benefits: Threat Risk Assessments detect security gaps, providing the opportunity to respond via mitigation strategies that prevent future incidents. text/html 2009-09-22T18:39:52+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_incident_analysis?rev=1253641192&do=diff Procedures for consistent reporting of security incidents to ensure appropriate corrective action. Requirement for periodic, not less than Annual Report on Information Technology Systems security. Benefits: An ongoing Annual Report will highlight areas where effective mitigation action can be planned text/html 2009-09-22T18:39:41+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/systems_governance_security_organization?rev=1253641181&do=diff Corporate/Programme/Project security boards and teams. Benefits: A strong security organisation at all corporate levels is necessary to implement all of the elements of prevention, detection, response, and mitigation. text/html 2009-09-22T17:39:01+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/oo_java_xslt_tranform?rev=1253637541&do=diff import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.stream.StreamSource; import javax.xml.transform.stream.StreamResult; import java.io.*; public class Transform { /** Perform an XSLT transformation, * sending the results * to System.out. */ public static void main(String[] args) throws Exception { if (args.length != 2) { System.err.println( "Usage:… text/html 2009-09-22T17:36:03+01:00 Administrator http://www.spamer.me.uk/wiki/doku.php/standards_migration?rev=1253637363&do=diff Software & standards evolution require a need to establish a Policy & Procedures for handling changes to standards. Policy Aim The aim of this Policy is to provide a consistent and predictable technology platform for ongoing architectural development by ensuring effective management & governance of versions of standards.