From 7f4f260d732c849c1e88fcb91023faab5316d9c6 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Sun, 13 Sep 2009 19:04:14 +0200
Subject: StorageManager can delete stored data now

---
 src/Common/StorageBackend.h                        |  6 ++++++
 src/Common/StorageManager.cpp                      | 16 ++++++++++++++++
 src/Common/StorageManager.h                        |  4 ++++
 .../StorageBackendFile/StorageBackendFile.cpp      | 22 ++++++++++++++++++++++
 .../StorageBackendFile/StorageBackendFile.h        |  4 ++++
 5 files changed, 52 insertions(+)

diff --git a/src/Common/StorageBackend.h b/src/Common/StorageBackend.h
index 1d53570..abec185 100644
--- a/src/Common/StorageBackend.h
+++ b/src/Common/StorageBackend.h
@@ -38,9 +38,15 @@ class StorageBackend {
     virtual std::set<std::string> listTypes() throw (Core::Exception) = 0;
     virtual std::set<std::string> list(const std::string &type) throw (Core::Exception) = 0;
 
+    virtual bool exists(const std::string &type, const std::string &name) throw (Core::Exception) {
+      return (list(type).count(name) > 0);
+    }
+
     virtual void store(const std::string &type, const std::string &name, const XmlData *data) throw (Core::Exception) = 0;
     virtual boost::shared_ptr<XmlData> load(const std::string &type, const std::string &name) throw (Core::Exception) = 0;
 
+    virtual void remove(const std::string &type, const std::string &name) throw (Core::Exception) = 0;
+
   public:
     virtual ~StorageBackend() {}
 };
diff --git a/src/Common/StorageManager.cpp b/src/Common/StorageManager.cpp
index ac83476..3b14554 100644
--- a/src/Common/StorageManager.cpp
+++ b/src/Common/StorageManager.cpp
@@ -52,6 +52,14 @@ std::set<std::string> StorageManager::list(const std::string &type) throw (Core:
   return backend->list(type);
 }
 
+bool StorageManager::exists(const std::string &type, const std::string &name) throw (Core::Exception) {
+  boost::shared_lock<boost::shared_mutex> lock(mutex);
+    if(!backend)
+      throw Core::Exception(Core::Exception::NOT_IMPLEMENTED);
+
+    return backend->exists(type, name);
+}
+
 void StorageManager::store(const std::string &type, const std::string &name, const XmlData *data) throw (Core::Exception) {
   boost::shared_lock<boost::shared_mutex> lock(mutex);
   if(!backend)
@@ -68,5 +76,13 @@ boost::shared_ptr<XmlData> StorageManager::load(const std::string &type, const s
   return backend->load(type, name);
 }
 
+void StorageManager::remove(const std::string &type, const std::string &name) throw (Core::Exception) {
+  boost::shared_lock<boost::shared_mutex> lock(mutex);
+  if(!backend)
+    throw Core::Exception(Core::Exception::NOT_IMPLEMENTED);
+
+  backend->remove(type, name);
+}
+
 }
 }
diff --git a/src/Common/StorageManager.h b/src/Common/StorageManager.h
index 98533fb..594c294 100644
--- a/src/Common/StorageManager.h
+++ b/src/Common/StorageManager.h
@@ -54,8 +54,12 @@ class MAD_COMMON_EXPORT StorageManager {
     std::set<std::string> listTypes() throw (Core::Exception);
     std::set<std::string> list(const std::string &type) throw (Core::Exception);
 
+    bool exists(const std::string &type, const std::string &name) throw (Core::Exception);
+
     void store(const std::string &type, const std::string &name, const XmlData *data) throw (Core::Exception);
     boost::shared_ptr<XmlData> load(const std::string &type, const std::string &name) throw (Core::Exception);
+
+    void remove(const std::string &type, const std::string &name) throw (Core::Exception);
 };
 
 }
diff --git a/src/modules/StorageBackendFile/StorageBackendFile.cpp b/src/modules/StorageBackendFile/StorageBackendFile.cpp
index 7c952bd..c8bc4f7 100644
--- a/src/modules/StorageBackendFile/StorageBackendFile.cpp
+++ b/src/modules/StorageBackendFile/StorageBackendFile.cpp
@@ -116,6 +116,18 @@ std::set<std::string> StorageBackendFile::list(const std::string &type) throw (C
   return ret;
 }
 
+
+bool StorageBackendFile::exists(const std::string &type, const std::string &name) throw (Core::Exception) {
+  boost::shared_lock<boost::shared_mutex> lock(mutex);
+
+  if(!configured)
+    throw Core::Exception(Core::Exception::NOT_AVAILABLE);
+
+  boost::filesystem::path path = getFileName(type, name);
+
+  return boost::filesystem::is_regular_file(path);
+}
+
 void StorageBackendFile::store(const std::string &type, const std::string &name, const Common::XmlData *data) throw (Core::Exception) {
   boost::lock_guard<boost::shared_mutex> lock(mutex);
 
@@ -138,6 +150,16 @@ boost::shared_ptr<Common::XmlData> StorageBackendFile::load(const std::string &t
   return boost::shared_ptr<Common::XmlData>(new Common::XmlData(path.file_string()));
 }
 
+void StorageBackendFile::remove(const std::string &type, const std::string &name) throw (Core::Exception) {
+  boost::lock_guard<boost::shared_mutex> lock(mutex);
+
+  if(!configured)
+    throw Core::Exception(Core::Exception::NOT_AVAILABLE);
+
+  boost::filesystem::path path = getFileName(type, name);
+  boost::filesystem::remove(path);
+}
+
 }
 }
 }
diff --git a/src/modules/StorageBackendFile/StorageBackendFile.h b/src/modules/StorageBackendFile/StorageBackendFile.h
index 45f4f98..5cce4fc 100644
--- a/src/modules/StorageBackendFile/StorageBackendFile.h
+++ b/src/modules/StorageBackendFile/StorageBackendFile.h
@@ -51,9 +51,13 @@ class StorageBackendFile : public Common::StorageBackend, private Core::Configur
     virtual std::set<std::string> listTypes() throw (Core::Exception);
     virtual std::set<std::string> list(const std::string &type) throw (Core::Exception);
 
+    virtual bool exists(const std::string &type, const std::string &name) throw (Core::Exception);
+
     virtual void store(const std::string &type, const std::string &name, const Common::XmlData *data) throw (Core::Exception);
     virtual boost::shared_ptr<Common::XmlData> load(const std::string &type, const std::string &name) throw (Core::Exception);
 
+    virtual void remove(const std::string &type, const std::string &name) throw (Core::Exception);
+
   public:
     StorageBackendFile(Common::Application *application0) : application(application0), configured(false) {
       application->getConfigManager()->registerConfigurable(this);
-- 
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