Posted on

Android room schema export directory

Room – Schema export directory is not provided to the annotation processor so we cannot export the schema

https://stackoverflow.com/questions/44322178/room-schema-export-directory-is-not-provided-to-the-annotation-processor-so-we

[code language=”java”]
@Database(entities = { YourEntity.class }, version = 1, exportSchema = false)
public abstract class AppDatabase extends RoomDatabase {
}
[/code]

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Android JSON Parsers Comparison

https://medium.com/@IlyaEremin/android-json-parsers-comparison-2017-8b5221721e31

List of parsers to compare: gson 2.8.0, jackson 2.0.1, moshi 1.4.0, ason 1.1.0.

conclusion

jackson:
pros: fasters, triggers GC least, most customazible
cons: 6.7k methods (can be reduced by Proguard), API not so friendly

gson:
pros: fast enough, most popular (10k stars on github), pretty API, small
cons: relatively slow, trigger GC relatively more

There is no reasons for me to use moshi or ason based on this comparation: they are slower almost in each test.