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Questions - android-room-relation

POJO within POJO, Entity-Relation problem

I have five tables in my database: AREA, AREA_TYPE, SAMPLE, PACK, UNIT @Entity(tableName = "AREA") data class AreaEntity( @PrimaryKey val id:String, val title:String, ...
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rahman kalınbaçoğlu

android

android-room

entity-relationship

pojo

android-room-relation

Votes: 0

Answers: 2

Latest Answer

First the use of prefix, this is an option to circumvent the ambiguous column names (e.g. which id column is the correct one to use? (rhetorical)) BUT you would then have to play around with the queri...
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MikeT

Android Room embedded relationship query results

I am currently trying to get results from a query of nested relationships in Room. Here Are my classes/database entities involved: @Entity data class PrayerRequestEntity( var title: String, va...
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Martin

android

android-room

android-room-relation

android-room-embedded

Votes: 0

Answers: 1

Latest Answer

I believe that your issue is with the @Query's rather than with the relationships. Upon closer inspection the messages shows java code e.g. termination with ;'s. Therefore the issue is within the gene...
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MikeT

Android room DB - Handling of foreignKeys in DB upgrade and Altering the table

I'm using a room DB. I've 2 tables A and B. The primary key of A is foreign key in Table B. Below is my DB structure - @Entity(tableName = "A") data class A( @PrimaryKey @NotNull @Co...
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Amrut

android

sql

foreign-keys

android-room

android-room-relation

Votes: 0

Answers: 1

Latest Answer

Start by Creating a table based upon table B e.g. DROP TABLE IF EXISTS B_temp; CREATE TABLE B_temp AS SELECT * FROM B; see https://sqlite.org/lang_createtable.html#create_table_as_select_statement...
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MikeT

Room relational query method with paging

In Room 2.4, there is a new feature called relational query method in DAO which you can write your custom query to select columns from 2 entities and Room can be able to aggregate into Map<TableA, ...
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Eric Li

android-room

android-room-relation

Votes: 0

Answers: 0

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