Vladimir. Thank you, it's clear now.
I also wonder, why we provide access to internal HashMaps through getters? Should we wrap internal maps into `Collections.unmodifiableMap`? ``` public Map<String, Object> getDefaultFieldValues() { return defaultFieldValues; } ``` В Ср, 07/03/2018 в 14:36 +0300, Vladimir Ozerov пишет: > Hi Nikolay, > > The answer is simple - legacy. QueryEntity was introduced long before we > had rich SQL support. At this point we should consider both QueryEntity and > our SQL API obsolete. There is a ticket to design new SQL API [1] and new > "QueryEntity" should be it's integral part. If you have any ideas please > feel free to share. > > Vladimir. > > [1] https://issues.apache.org/jira/browse/IGNITE-4701 > > On Wed, Mar 7, 2018 at 2:00 PM, Nikolay Izhikov <nizhi...@apache.org> wrote: > > > Hello, Igniters. > > > > I'm working on IGNITE-7691 [1] > > The goal of ticket is provide scale and precision info about DECIMAL > > columns. > > > > I see that QueryEntity has a separate collection for each type of meta > > information: > > > > * not null fields - [2] > > * default values - [3] > > > > Why we have such class design? > > It seems like a wrong design to have a separate collection for every type > > of metainfo. > > > > Because, there are many pieces of column meta information: > > > > * not null > > * default value > > * maximum length/size for VARCHAR or ARRAY or BINARY > > * scale, precision > > * etc. > > > > Do we have plans to provide this information to user through QueryEntity? > > > > [1] https://issues.apache.org/jira/projects/IGNITE/issues/IGNITE-7691 > > [2] https://github.com/apache/ignite/blob/master/modules/ > > core/src/main/java/org/apache/ignite/cache/QueryEntity.java#L87 > > [3] https://github.com/apache/ignite/blob/master/modules/ > > core/src/main/java/org/apache/ignite/cache/QueryEntity.java#L90
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