Adds functional search using sqlite full text search syntax.

Android/app/src/main/java/com/majinnaibu/monstercards/MonsterCardsApplication.java

@@ -4,7 +4,10 @@ import android.app.Application;
 import android.content.Context;
 import android.content.res.Configuration;
 
+import androidx.annotation.NonNull;
 import androidx.room.Room;
+import androidx.room.migration.Migration;
+import androidx.sqlite.db.SupportSQLiteDatabase;
 
 import com.facebook.flipper.android.AndroidFlipperClient;
 import com.facebook.flipper.android.utils.FlipperUtils;
@@ -50,6 +53,7 @@ public class MonsterCardsApplication extends Application {
         }
 
         m_db = Room.databaseBuilder(getApplicationContext(), AppDatabase.class, "monsters")
+                .addMigrations(MIGRATION_1_2)
                 .fallbackToDestructiveMigrationOnDowngrade()
                 .build();
         m_monsterLibraryRepository = new MonsterRepository(m_db);
@@ -69,4 +73,17 @@ public class MonsterCardsApplication extends Application {
     public void onLowMemory() {
         super.onLowMemory();
     }
+
+    private static final Migration MIGRATION_1_2 = new Migration(1, 2) {
+        @Override
+        public void migrate(@NonNull SupportSQLiteDatabase database) {
+            // rename table monster to monsters
+            database.execSQL("ALTER TABLE monster RENAME TO monsters");
+            // create the fts view
+            database.execSQL("CREATE VIRTUAL TABLE IF NOT EXISTS `monsters_fts` USING FTS4(`name` TEXT, `size` TEXT, `type` TEXT, `subtype` TEXT, `alignment` TEXT, content=`monsters`)");
+            // build the initial full text search index
+            database.execSQL("INSERT INTO monsters_fts(monsters_fts) VALUES('rebuild')");
+
+        }
+    };
 }