X-Git-Url: https://git.ktnx.net/?p=mobile-ledger.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fnet%2Fktnx%2Fmobileledger%2FMobileLedgerDB.java;h=141b4a321f5cf9d304513c99bf90bb9ba290e03a;hp=d8b84fe15372eb52f6b8c4bf378af8b093e3af93;hb=65c5cdc30c7bcf5cf8d39df1dc20abba8d476670;hpb=6c55bb9b3b8e051d61cc7ee440c2ba2dd717a06f

diff --git a/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDB.java b/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDB.java
index d8b84fe1..141b4a32 100644
--- a/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDB.java
+++ b/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDB.java
@@ -1,10 +1,19 @@
 package net.ktnx.mobileledger;
 
+import android.content.res.Resources;
 import android.database.Cursor;
+import android.database.SQLException;
 import android.database.sqlite.SQLiteDatabase;
+import android.util.Log;
+
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.Locale;
 
 class MobileLedgerDB {
     static final String DATABASE_NAME = "accounts";
+    static final String OPT_DB_REVISION = "db_revision";
     private static String db_filename;
     static SQLiteDatabase db;
 
@@ -23,6 +32,60 @@ class MobileLedgerDB {
         db.execSQL("create index if not exists idx_accounts_name on accounts(name);");
         db.execSQL("create table if not exists options(name varchar, value varchar);");
         db.execSQL("create unique index if not exists idx_options_name on options(name);");
+        db.execSQL("create table if not exists account_values(account varchar not null, currency varchar not null, value decimal(18,2) not null);");
+        db.execSQL("create index if not exists idx_account_values_account on account_values(account);");
+        db.execSQL("create unique index if not exists un_account_values on account_values(account,currency);");
+    }
+
+    static void applyRevisions(Resources rm, String pkg_name) {
+        int cur_ver = Integer.parseInt(get_option_value(OPT_DB_REVISION, "0"));
+
+        Log.d("db", "Current DB revision is "+String.valueOf(cur_ver));
+
+        while (applyRevision(rm, pkg_name, cur_ver+1)) {
+            cur_ver++;
+        }
+
+        Log.d("db", "Database revision is "+String.valueOf(cur_ver)+" now");
+    }
+    private static boolean applyRevision(Resources rm, String pkg_name, int rev_no) {
+        String rev_file = String.format(Locale.US, "sql_%d", rev_no);
+
+        int res_id = rm.getIdentifier(rev_file, "raw", pkg_name);
+        if (res_id == 0) {
+            Log.d("db", String.format(Locale.US, "No resource for revision %d", rev_no));
+            return false;
+        }
+        db.beginTransaction();
+        try (InputStream res = rm.openRawResource(res_id)) {
+            Log.d("db", "Applying revision " + String.valueOf(rev_no));
+            InputStreamReader isr = new InputStreamReader(res);
+            BufferedReader reader = new BufferedReader(isr);
+
+            String line;
+            while ((line = reader.readLine()) != null) {
+                db.execSQL(line);
+            }
+
+            set_option_value(OPT_DB_REVISION, rev_no);
+            db.setTransactionSuccessful();
+        } catch (Resources.NotFoundException e) {
+            Log.d("db", "SQL revision "+String.valueOf(rev_no)+" not found");
+            return false;
+        }
+        catch (SQLException e) {
+            Log.e("db", String.format(Locale.US, "Error applying revision %d: %s", rev_no, e.getMessage()));
+            return false;
+        }
+        catch (Exception e) {
+            Log.w("db", "Error reading revision" + String.valueOf(rev_no)+": "+e.getMessage());
+            return false;
+        }
+        finally {
+            db.endTransaction();
+        }
+
+        return true;
     }
 
     static int get_option_value(String name, int default_value) {