New: Add getAccount.

src/main/java/cash/z/ecc/android/sdk/db/DerivedDataDb.kt

@@ -17,6 +17,7 @@ import cash.z.ecc.android.sdk.db.entity.Sent
 import cash.z.ecc.android.sdk.db.entity.TransactionEntity
 import cash.z.ecc.android.sdk.db.entity.Utxo
 import cash.z.ecc.android.sdk.ext.twig
+import cash.z.ecc.android.sdk.type.UnifiedAddressAccount
 
 //
 // Database
@@ -46,6 +47,7 @@ abstract class DerivedDataDb : RoomDatabase() {
     abstract fun blockDao(): BlockDao
     abstract fun receivedDao(): ReceivedDao
     abstract fun sentDao(): SentDao
+    abstract fun accountDao(): AccountDao
 
     //
     // Migrations
@@ -175,7 +177,6 @@ abstract class DerivedDataDb : RoomDatabase() {
                     ); 
                     """.trimIndent()
                 )
-                database.execSQL("INSERT INTO accounts_new SELECT * FROM accounts;")
                 database.execSQL("DROP TABLE accounts;")
                 database.execSQL("ALTER TABLE accounts_new RENAME TO accounts;")
                 database.execSQL("PRAGMA foreign_keys = ON;")
@@ -221,6 +222,20 @@ interface SentDao {
     fun count(): Int
 }
 
+@Dao
+interface AccountDao {
+    @Query(
+        """
+        SELECT account AS accountId,
+               transparent_address AS rawTransparentAddress,
+               address AS rawShieldedAddress
+        FROM accounts
+        WHERE account = :id
+        """
+    )
+    suspend fun findAccountById(id: Int): UnifiedAddressAccount?
+}
+
 /**
  * The data access object for transactions, used for querying all transaction information, including
  * whether transactions are mined.

src/main/java/cash/z/ecc/android/sdk/transaction/PagedTransactionRepository.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import androidx.paging.PagedList
 import androidx.room.Room
 import androidx.room.RoomDatabase
+import cash.z.ecc.android.sdk.db.AccountDao
 import cash.z.ecc.android.sdk.db.BlockDao
 import cash.z.ecc.android.sdk.db.DerivedDataDb
 import cash.z.ecc.android.sdk.db.TransactionDao
@@ -11,6 +12,7 @@ import cash.z.ecc.android.sdk.db.entity.ConfirmedTransaction
 import cash.z.ecc.android.sdk.ext.ZcashSdk
 import cash.z.ecc.android.sdk.ext.android.toFlowPagedList
 import cash.z.ecc.android.sdk.ext.android.toRefreshable
+import cash.z.ecc.android.sdk.type.UnifiedAddressAccount
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.withContext
 
@@ -50,6 +52,7 @@ open class PagedTransactionRepository(
     }
 
     private val blocks: BlockDao = derivedDataDb.blockDao()
+    private val accounts: AccountDao = derivedDataDb.accountDao()
     private val transactions: TransactionDao = derivedDataDb.transactionDao()
     private val receivedTxDataSourceFactory = transactions.getReceivedTransactions().toRefreshable()
     private val sentTxDataSourceFactory = transactions.getSentTransactions().toRefreshable()
@@ -95,6 +98,9 @@ open class PagedTransactionRepository(
     override suspend fun count(): Int = withContext(IO) {
         transactions.count()
     }
+
+    override suspend fun getAccount(accountId: Int): UnifiedAddressAccount? = accounts.findAccountById(accountId)
+
     /**
      * Close the underlying database.
      */
@@ -105,4 +111,6 @@ open class PagedTransactionRepository(
     // TODO: begin converting these into Data Access API. For now, just collect the desired operations and iterate/refactor, later
     fun findBlockHash(height: Int): ByteArray? = blocks.findHashByHeight(height)
     fun getTransactionCount(): Int = transactions.count()
+
+    // TODO: convert this into a wallet repository rather than "transaction repository"
 }

src/main/java/cash/z/ecc/android/sdk/transaction/TransactionRepository.kt

@@ -3,6 +3,7 @@ package cash.z.ecc.android.sdk.transaction
 import androidx.paging.PagedList
 import cash.z.ecc.android.sdk.db.entity.ConfirmedTransaction
 import cash.z.ecc.android.sdk.db.entity.EncodedTransaction
+import cash.z.ecc.android.sdk.type.UnifiedAddressAccount
 import kotlinx.coroutines.flow.Flow
 
 /**
@@ -76,6 +77,8 @@ interface TransactionRepository {
 
     suspend fun count(): Int
 
+    suspend fun getAccount(accountId: Int): UnifiedAddressAccount?
+
     //
     // Transactions
     //