From ba3e59477f9b4809c5ef248f91128dd4d0448a03 Mon Sep 17 00:00:00 2001
From: North <robyter@gmail>
Date: Wed, 9 Jan 2013 23:47:27 +0200
Subject: [PATCH] added versioning for the cards database DB_VERSION must be
 incremented when database needs clearing

---
 .../mage/cards/repository/CardRepository.java | 14 +++++++++++
 .../cards/repository/DatabaseVersion.java     | 23 +++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 Mage/src/mage/cards/repository/DatabaseVersion.java

diff --git a/Mage/src/mage/cards/repository/CardRepository.java b/Mage/src/mage/cards/repository/CardRepository.java
index 6902be403b..1279b645a0 100644
--- a/Mage/src/mage/cards/repository/CardRepository.java
+++ b/Mage/src/mage/cards/repository/CardRepository.java
@@ -51,7 +51,10 @@ import mage.Constants.CardType;
 public enum CardRepository {
 
     instance;
+
     private static final String JDBC_URL = "jdbc:sqlite:db/cards.db";
+    private static final long DB_VERSION = 1;
+
     private Random random = new Random();
     private Dao<CardInfo, Object> cardDao;
     private Set<String> classNames;
@@ -63,6 +66,17 @@ public enum CardRepository {
         }
         try {
             ConnectionSource connectionSource = new JdbcConnectionSource(JDBC_URL);
+            TableUtils.createTableIfNotExists(connectionSource, DatabaseVersion.class);
+            Dao<DatabaseVersion, Object> dbVersionDao = DaoManager.createDao(connectionSource, DatabaseVersion.class);
+            List<DatabaseVersion> dbVersions = dbVersionDao.queryForAll();
+            if (dbVersions.isEmpty() || dbVersions.get(0).getVersion() != DB_VERSION) {
+                TableUtils.dropTable(connectionSource, CardInfo.class, true);
+                if (dbVersions.isEmpty()) {
+                    DatabaseVersion dbVersion = new DatabaseVersion();
+                    dbVersion.setVersion(DB_VERSION);
+                    dbVersionDao.create(dbVersion);
+                }
+            }
 
             TableUtils.createTableIfNotExists(connectionSource, CardInfo.class);
             cardDao = DaoManager.createDao(connectionSource, CardInfo.class);
diff --git a/Mage/src/mage/cards/repository/DatabaseVersion.java b/Mage/src/mage/cards/repository/DatabaseVersion.java
new file mode 100644
index 0000000000..7f1b3aaab0
--- /dev/null
+++ b/Mage/src/mage/cards/repository/DatabaseVersion.java
@@ -0,0 +1,23 @@
+package mage.cards.repository;
+
+import com.j256.ormlite.field.DatabaseField;
+import com.j256.ormlite.table.DatabaseTable;
+
+/**
+ *
+ * @author North
+ */
+@DatabaseTable(tableName = "version")
+public class DatabaseVersion {
+
+    @DatabaseField
+    protected Long version;
+
+    public Long getVersion() {
+        return version;
+    }
+
+    public void setVersion(Long version) {
+        this.version = version;
+    }
+}