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The "gsoc_xs_override_proposal" page has been changed by uswick. http://wiki.apache.org/xerces/gsoc_xs_override_proposal?action=diff&rev1=12&rev2=13 -------------------------------------------------- . .Here “schemaLocation” indicates the location of the overriding schema document while “Content” corresponds to the types/groups/attributes/elements this schema will be overriding on the schemas available at corresponding “schemaLocation” . xs:override semantics are very much similar to class/prototypical inheritance where after successful application , corresponding overridden schemas replaces their old schemas by the new overriding schemas contained within a <xs:override> element. Following describes the criteria of xs:override on a general overview that should be considered in the implementation of xml schema composition on xs:override . - . . {{{ + . . + {{{ 1.override only applies if the schema component within <xs:override> exists in the overridden schema (corresponding to the respective schema Location defined). If this condition is not true, there’s no effect on the overriden schema location and overriding grammer won’t exist in the final schema representation. }}} - . {{{ 2. a)Each and every <override> schema information element would be subjected to “override transformation”[5] . However when target namespaces of overriding and overridden schemas don’t match “chameleon inclusion transformation”[6] is also performed prior to the override transform. Override transformation itself is pervasive and therefore would be applied to <include> information items on the overridden schema.(ie:- if schema A overrides B and B includes C then C will also be overridden accordingly ).Further more override transformation applies to <override> information items present on the overridden schema by merging. . . @@ -70, +70 @@ * Documentation (java docs + design details) on xs:override implementation/API == Community Interaction == + Initially i had trouble selecting a project since the project i was keeping in mind was already undertaken. Xerces-2j mailing list was really helpfull in this ,giving me lot of feedback on available projects that was not even initally declared as Summer projects for 2010 . I also was later able to get lot of insight on xs:override specification semantics and implementation details through the interaction on mails from xerces-j dev community . Through this I managed to digg into and clarify lot of details that would be very helpful through out my project and has definitely been a much needed guidance in writing this proposal as well. + == About me == . I'm a Computer Science Engineering undergraduate (final year),of the department of Computer Science and Engineering, University of Moratuwa, Sri Lanka . I'm very much passionate about Computer science and am especially interested in subject areas related to Compiler Theory ,Distributed Systems and Enterprise Middelware and also Artificial Intelligence.I do have experience in open source development and related aspects and always loved working in such a dynamic and encouraging environment . - . . I have worked on projects related to Apache Axis2 where I developed a tool [5](incubating) to extract WS-Policy(ie:-Security Policy) from WS policy compliant SOAP messages. Tool is especially useful in scenarios such as for clients who wish to build compatible client side policy for repective Services which don’t expose their messaging policy explicitly. This gave me a great understanding on WS:Security specifications and on mechanisms used by security modules such as Apache Rampart as well. Furthermore i developed Axis2 Messaging and Service Level Infrastructure for Rubyscript [6], so that Ruby Scripts can be exposed and accessed via WebServices by clients . + . I have worked on projects related to Apache Axis2 where I developed a tool [5](incubating) to extract WS-Policy(ie:-Security Policy) from WS policy compliant SOAP messages. Tool is especially useful in scenarios such as for clients who wish to build compatible client side policy for repective Services which don’t expose their messaging policy explicitly. This gave me a great understanding on WS:Security specifications and on mechanisms used by security modules such as Apache Rampart as well. Furthermore i developed Axis2 Messaging and Service Level Infrastructure for Rubyscript [6], so that Ruby Scripts can be exposed and accessed via WebServices by clients . - . . I also do have experience involved in projects related to Eclipse plugins, OSGi , XML parsers(this for our internal module DSD2.0[7] parser) and Data Mining (ie:-Collaborative Filtering), which got me working in a wide variety of frameworks ,programming/scripting languages such as Java ,C,C++, Javascript,Ruby,etc and under various platforms of Linux and Windows. I am currently involved in implementing a TupleSpace based Distributed System framework (which runs on top of a DHT[distributed hash table] named FreePastry [opensource implementation of Microsoft Pastry] ) for our final year project ,which facilitates time and space decoupling as well as content based addressing for messages in a distributed environment [8]. I consider my self a motivated computer science enthusiast who is willing to self learn and accept challenges and achieve them to the best of my ability. + . I also do have experience involved in projects related to Eclipse plugins, OSGi , XML parsers(this for our internal module DSD2.0[7] parser) and Data Mining (ie:-Collaborative Filtering), which got me working in a wide variety of frameworks ,programming/scripting languages such as Java ,C,C++, Javascript,Ruby,etc and under various platforms of Linux and Windows. I am currently involved in implementing a TupleSpace based Distributed System framework (which runs on top of a DHT[distributed hash table] named FreePastry [opensource implementation of Microsoft Pastry] ) for our final year project ,which facilitates time and space decoupling as well as content based addressing for messages in a distributed environment [8]. I consider my self a motivated computer science enthusiast who is willing to self learn and accept challenges and achieve them to the best of my ability. . . == REFERENCES == --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
