Created database versioning system d1.0

Also added an ANALYZE statement to the end of the datafile generation
process. This generates information that allows sqlite to sometimes come
up with a better query plan, and in many cases can significant speed up
queries. This constitutes a minor database update, but because this is
the first version that uses the database versioning system, older
versions are essentially incompatible.

refs #2

1 files changed, 23 insertions, 0 deletions

@@ -11,6 +11,7 @@
 #include "part.h"
 #include "field.h"
 #include "../lib/util.h"
+#include "../lib/version.h"
 
 namespace verbly {
   namespace generator {
@@ -112,6 +113,9 @@ namespace verbly {
       // Writes the database schema
       writeSchema();
 
+      // Writes the database version
+      writeVersion();
+
       // Dumps data to the database
       dumpObjects();
 
@@ -154,6 +158,9 @@ namespace verbly {
 
       // Populates the adjective similarity relationship from WordNet
       readWordNetSimilarity();
+
+      // Generates analysis data to assist in query planning.
+      analyzeDatabase();
     }
 
     void generator::readWordNetSynsets()
@@ -581,6 +588,15 @@ namespace verbly {
       }
     }
 
+    void generator::writeVersion()
+    {
+      std::list<field> fields;
+      fields.emplace_back("major", DATABASE_MAJOR_VERSION);
+      fields.emplace_back("minor", DATABASE_MINOR_VERSION);
+
+      db_.insertIntoTable("version", std::move(fields));
+    }
+
     void generator::dumpObjects()
     {
       {
@@ -1110,6 +1126,13 @@ namespace verbly {
       }
     }
 
+    void generator::analyzeDatabase()
+    {
+      std::cout << "Analyzing data..." << std::endl;
+
+      db_.runQuery("ANALYZE");
+    }
+
     std::list<std::string> generator::readFile(std::string path)
     {
       std::ifstream file(path);