From e65588dc9fc539683882a4b52bacb93cfe551d5d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Felix=20D=C3=B6rre?= <felix@dogcraft.de>
Date: Thu, 28 Aug 2014 18:04:45 +0200
Subject: [PATCH] A try to speed up database resetting for testcases.

---
 .../cacert/gigi/testUtils/ManagedTest.java    |  4 ++--
 .../org/cacert/gigi/util/DatabaseManager.java | 22 +++++++++++++------
 2 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/tests/org/cacert/gigi/testUtils/ManagedTest.java b/tests/org/cacert/gigi/testUtils/ManagedTest.java
index 637b272a..ed5f1eec 100644
--- a/tests/org/cacert/gigi/testUtils/ManagedTest.java
+++ b/tests/org/cacert/gigi/testUtils/ManagedTest.java
@@ -150,12 +150,12 @@ public class ManagedTest {
     }
 
     public static void purgeDatabase() throws SQLException, IOException {
-        System.out.print("... purging Database");
+        System.out.print("... resetting Database");
         long ms = System.currentTimeMillis();
         try {
             DatabaseManager.run(new String[] {
                     testProps.getProperty("sql.driver"), testProps.getProperty("sql.url"), testProps.getProperty("sql.user"), testProps.getProperty("sql.password")
-            });
+            }, true);
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
         }
diff --git a/util/org/cacert/gigi/util/DatabaseManager.java b/util/org/cacert/gigi/util/DatabaseManager.java
index 9fe3f5fb..457e11ff 100644
--- a/util/org/cacert/gigi/util/DatabaseManager.java
+++ b/util/org/cacert/gigi/util/DatabaseManager.java
@@ -9,6 +9,8 @@ import java.sql.DriverManager;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.Properties;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 public class DatabaseManager {
 
@@ -28,28 +30,34 @@ public class DatabaseManager {
             System.err.println("Usage: com.mysql.jdbc.Driver jdbc:mysql://localhost/cacert user password");
             return;
         }
-        run(args);
+        run(args, false);
     }
 
-    public static void run(String[] args) throws ClassNotFoundException, SQLException, IOException {
+    public static void run(String[] args, boolean truncate) throws ClassNotFoundException, SQLException, IOException {
         Class.forName(args[0]);
         Connection conn = DriverManager.getConnection(args[1], args[2], args[3]);
         Statement stmt = conn.createStatement();
-        addFile(stmt, new File("doc/tableStructure.sql"));
+        addFile(stmt, new File("doc/tableStructure.sql"), truncate);
         File localData = new File("doc/sampleData.sql");
         if (localData.exists()) {
-            addFile(stmt, localData);
+            addFile(stmt, localData, false);
         }
         stmt.executeBatch();
         stmt.close();
     }
 
-    private static void addFile(Statement stmt, File f) throws IOException, SQLException {
+    private static void addFile(Statement stmt, File f, boolean truncate) throws IOException, SQLException {
         String sql = readFile(f);
         String[] stmts = sql.split(";");
+        Pattern p = Pattern.compile("\\s*DROP TABLE IF EXISTS `([^`]+)`");
         for (String string : stmts) {
-            if ( !string.trim().equals("")) {
-                stmt.addBatch(string);
+            Matcher m = p.matcher(string);
+            if (m.matches()) {
+                String sql2 = "TRUNCATE `" + m.group(1) + "`";
+                stmt.addBatch(sql2);
+            }
+            if ( !string.trim().equals("") && ( !truncate || string.contains("INSERT"))) {
+                stmt.addBatch(string.replace("ENGINE=Memory", ""));
             }
         }
     }
-- 
2.39.2