Thanks Chanaka for the input Regards, Sohani
Sohani Weerasinghe Senior Software Engineer WSO2, Inc: http://wso2.com Mobile : +94 716439774 Blog :http://christinetechtips.blogspot.com/ Twitter : https://twitter.com/sohanichristine On Mon, Jun 20, 2016 at 4:20 PM, Chanaka Fernando <chana...@wso2.com> wrote: > Hi Sohani, > > +1 to use LinkedHashMaps instead of HashMaps since former make sure the > order of the items as you have mentioned. LinkedHashMaps has a higher > memory footprint but it has a better performance when accessing values in > the map (refer [1]). If we need a guarantee in the order of items we insert > into the map, there is no option than using the LinkedHashMap. > > [1] > http://stackoverflow.com/questions/12998568/hashmap-vs-linkedhashmap-performance-in-iteration-over-values > > Thanks, > Chanaka > > On Mon, Jun 20, 2016 at 2:51 PM, Sohani Weerasinghe <soh...@wso2.com> > wrote: > >> Hi All, >> >> We are in a process of $subject and the main issue we faced in generating >> the json schema was as follows. >> >> When generating the json schema we mainly convert the xml to json and the >> xml to json conversion does not guarantee the order since json object is an >> unordered set of name/value pairs [1]. >> >> The main reason is the usage of HashMaps instead of LinkedHashMaps in >> instantiating the JSONObjects and we could solve the issue by using the >> LinkedHashMaps. >> >> This issue again occurs in serializing the schema while iterating through >> the gmf tree, since we are generating the schema by creating the >> JSONObjects and JSONArrays appropriately. We could solve this issue as well >> by using the above solution and as a result, the generated tree and the >> schema will maintain the order of the XML payload >> >> [1] >> http://stackoverflow.com/questions/26034370/inverted-order-of-json-elements-in-java-after-xml-conversion >> >> Thanks, >> Sohani >> Sohani Weerasinghe >> Senior Software Engineer >> WSO2, Inc: http://wso2.com >> >> Mobile : +94 716439774 >> Blog :http://christinetechtips.blogspot.com/ >> Twitter : https://twitter.com/sohanichristine >> > > > > -- > Thank you and Best Regards, > Chanaka Fernando > Senior Technical Lead > WSO2, Inc.; http://wso2.com > lean.enterprise.middleware > > mobile: +94 773337238 > Blog : http://soatutorials.blogspot.com > LinkedIn:http://www.linkedin.com/pub/chanaka-fernando/19/a20/5b0 > Twitter:https://twitter.com/chanakaudaya > > > > >
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