From 93500a9656dffde57ab32410642c2dd74098b9f8 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Thu, 12 Nov 2009 10:02:54 +0000
Subject: Make database connection shared among threads and make is thread
 safe.

---
 server/src/database.h | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

(limited to 'server/src/database.h')

diff --git a/server/src/database.h b/server/src/database.h
index 396dda4..f253ba5 100644
--- a/server/src/database.h
+++ b/server/src/database.h
@@ -32,7 +32,7 @@
 #include "pracrodao.h"
 #include "transaction.h"
 #include "template.h"
-
+#include "mutex.h"
 #include "debug.h"
 
 class Database {
@@ -42,22 +42,31 @@ public:
 
   // Make a commit to the db
   void commitTransaction(std::string user, std::string patientid, Macro &macro, Fields &fields, time_t now = time(NULL)) {
+    if(!dao) return;
+    mutex.lock();
     PRACRO_DEBUG(db, "%s, %s, %s,...\n", user.c_str(), patientid.c_str(), macro.attributes["name"].c_str());
-    if(dao) dao->commitTransaction(user, patientid, macro, fields, now);
+    dao->commitTransaction(user, patientid, macro, fields, now);
+    mutex.unlock();
   }
 
   // Get a list of values from the db
   Values getValues(std::string patientid, Fieldnames &fieldnames, time_t oldest = 0) {
+    if(!dao) return Values();
+    mutex.lock();
     PRACRO_DEBUG(db, "%s, <%u fieldnames>, %ld\n", patientid.c_str(), fieldnames.size(), oldest);
-    if(dao) return dao->getLatestValues(patientid, NULL, fieldnames, oldest);
-    else return Values();
+    Values values = dao->getLatestValues(patientid, NULL, fieldnames, oldest);
+    mutex.unlock();
+    return values;
   }
 
   // Check if a macro has been committed.
   bool checkMacro(std::string patientid, std::string macro, time_t oldest = 0) {
     PRACRO_DEBUG(db, "%s, %s, %ld\n", patientid.c_str(), macro.c_str(), oldest);
     if(!dao) return false;
-    return dao->nrOfCommits(patientid, macro, oldest) > 0;
+    mutex.lock();
+    bool res = dao->nrOfCommits(patientid, macro, oldest) > 0;
+    mutex.unlock();
+    return res;
   }
   
   // Get latest resume of a given macro
@@ -66,7 +75,9 @@ public:
     if(!dao) return "";
     Fieldnames fn;
     fn.push_back("journal.resume");
+    mutex.lock();
     Values v = dao->getLatestValues(patientid, &macro, fn, oldest);
+    mutex.unlock();
     Values::iterator i = v.find("journal.resume");
     if(i != v.end())  return i->second.value;
     else return "";
@@ -75,13 +86,17 @@ public:
   void addFieldname(std::string name, std::string description)
   {
     if(!dao) return;
+    mutex.lock();
     dao->addFieldname(name, description);
+    mutex.unlock();
   }
 
   void delFieldname(std::string name)
   {
     if(!dao) return;
+    mutex.lock();
     dao->delFieldname(name);
+    mutex.unlock();
   }
   
   std::vector<Fieldname> getFieldnames()
@@ -90,11 +105,15 @@ public:
       std::vector<Fieldname> fieldnames;
       return fieldnames;
     }
-    return dao->getFieldnames();
+    mutex.lock();
+    std::vector<Fieldname> fieldnames = dao->getFieldnames(); 
+    mutex.unlock();
+    return fieldnames;
   }
 
 private:
   PracroDAO *dao;
+  Mutex mutex;
 };
 
 #endif/*__PRACRO_DATABASE_H__*/
-- 
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