Is it possible using String as PrimaryKey in Android Room

Question

I use uuid in my java backend server. So I need to use that uuid in room android to make sure entities are sync'd properly. I am aware of Is it possible to apply primary key on the text fields in android database and text as primarykey in android. I want to create something like this

@Entity(tableName = CrewColumns.TABLE_NAME)
@TypeConverters(BigDecimalConverter::class)
@JsonIgnoreProperties(ignoreUnknown = true)
class Crew() {
    constructor (uuid: String) : this() {
        this.uuid = uuid;
    }

    /**
     * The unique ID of the item.
     */
    @PrimaryKey
    @ColumnInfo(name = CrewColumns.UUID)
    var uuid: String = ""
    @ColumnInfo(name = CrewColumns.NAME)
    var name: String = ""
}

Will it be a problem with Room (DAO etc)? Thank you.

Answer 1

Yes, you can use a String as a @PrimaryKey.

Additionally, I also recommend making use of Kotlin's data class to simplify your entities. For example:

@Entity
data class Crew(@PrimaryKey val uuid: String, val name: String) {
    // Put any functions or other members not initialized by the constructor here
}