Replace all database.beginTransaction with beginTransactionNonExclusive

This ensures other database readers can continue reading while we do our
write transaction.

PiperOrigin-RevId: 281520758

library/core/src/main/java/com/google/android/exoplayer2/offline/DefaultDownloadIndex.java

@@ -285,7 +285,7 @@ public final class DefaultDownloadIndex implements WritableDownloadIndex {
       int version = VersionTable.getVersion(readableDatabase, VersionTable.FEATURE_OFFLINE, name);
       if (version != TABLE_VERSION) {
         SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-        writableDatabase.beginTransaction();
+        writableDatabase.beginTransactionNonExclusive();
         try {
           VersionTable.setVersion(
               writableDatabase, VersionTable.FEATURE_OFFLINE, name, TABLE_VERSION);

library/core/src/main/java/com/google/android/exoplayer2/upstream/cache/CacheFileMetadataIndex.java

@@ -78,7 +78,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     try {
       String tableName = getTableName(hexUid);
       SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-      writableDatabase.beginTransaction();
+      writableDatabase.beginTransactionNonExclusive();
       try {
         VersionTable.removeVersion(
             writableDatabase, VersionTable.FEATURE_CACHE_FILE_METADATA, hexUid);
@@ -116,7 +116,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
               readableDatabase, VersionTable.FEATURE_CACHE_FILE_METADATA, hexUid);
       if (version != TABLE_VERSION) {
         SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-        writableDatabase.beginTransaction();
+        writableDatabase.beginTransactionNonExclusive();
         try {
           VersionTable.setVersion(
               writableDatabase, VersionTable.FEATURE_CACHE_FILE_METADATA, hexUid, TABLE_VERSION);
@@ -214,7 +214,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     Assertions.checkNotNull(tableName);
     try {
       SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-      writableDatabase.beginTransaction();
+      writableDatabase.beginTransactionNonExclusive();
       try {
         for (String name : names) {
           writableDatabase.delete(tableName, WHERE_NAME_EQUALS, new String[] {name});

library/core/src/main/java/com/google/android/exoplayer2/upstream/cache/CachedContentIndex.java

@@ -797,7 +797,7 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
                 hexUid);
         if (version != TABLE_VERSION) {
           SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-          writableDatabase.beginTransaction();
+          writableDatabase.beginTransactionNonExclusive();
           try {
             initializeTable(writableDatabase);
             writableDatabase.setTransactionSuccessful();
@@ -832,7 +832,7 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
     public void storeFully(HashMap<String, CachedContent> content) throws IOException {
       try {
         SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-        writableDatabase.beginTransaction();
+        writableDatabase.beginTransactionNonExclusive();
         try {
           initializeTable(writableDatabase);
           for (CachedContent cachedContent : content.values()) {
@@ -855,7 +855,7 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
       }
       try {
         SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-        writableDatabase.beginTransaction();
+        writableDatabase.beginTransactionNonExclusive();
         try {
           for (int i = 0; i < pendingUpdates.size(); i++) {
             CachedContent cachedContent = pendingUpdates.valueAt(i);
@@ -931,7 +931,7 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
       try {
         String tableName = getTableName(hexUid);
         SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase();
-        writableDatabase.beginTransaction();
+        writableDatabase.beginTransactionNonExclusive();
         try {
           VersionTable.removeVersion(
               writableDatabase, VersionTable.FEATURE_CACHE_CONTENT_METADATA, hexUid);