Import BSDDB 4.7.25 (as of svn r89086)

examples_cxx/getting_started/MyDb.cpp

@@ -0,0 +1,63 @@
+#include "MyDb.hpp"
+
+// File: MyDb.cpp
+
+// Class constructor. Requires a path to the location
+// where the database is located, and a database name
+MyDb::MyDb(std::string &path, std::string &dbName,
+           bool isSecondary)
+    : db_(NULL, 0),               // Instantiate Db object
+      dbFileName_(path + dbName), // Database file name
+      cFlags_(DB_CREATE)          // If the database doesn't yet exist,
+                                  // allow it to be created.
+{
+    try
+    {
+        // Redirect debugging information to std::cerr
+        db_.set_error_stream(&std::cerr);
+
+        // If this is a secondary database, support
+        // sorted duplicates
+        if (isSecondary)
+            db_.set_flags(DB_DUPSORT);
+
+        // Open the database
+        db_.open(NULL, dbFileName_.c_str(), NULL, DB_BTREE, cFlags_, 0);
+    }
+    // DbException is not a subclass of std::exception, so we
+    // need to catch them both.
+    catch(DbException &e)
+    {
+        std::cerr << "Error opening database: " << dbFileName_ << "\n";
+        std::cerr << e.what() << std::endl;
+    }
+    catch(std::exception &e)
+    {
+        std::cerr << "Error opening database: " << dbFileName_ << "\n";
+        std::cerr << e.what() << std::endl;
+    }
+}
+
+// Private member used to close a database. Called from the class
+// destructor.
+void
+MyDb::close()
+{
+    // Close the db
+    try
+    {
+        db_.close(0);
+        std::cout << "Database " << dbFileName_
+                  << " is closed." << std::endl;
+    }
+    catch(DbException &e)
+    {
+            std::cerr << "Error closing database: " << dbFileName_ << "\n";
+            std::cerr << e.what() << std::endl;
+    }
+    catch(std::exception &e)
+    {
+        std::cerr << "Error closing database: " << dbFileName_ << "\n";
+        std::cerr << e.what() << std::endl;
+    }
+}