Implement SQLite incremental BLOB/TEXT I/O

1 files changed, 280 insertions, 0 deletions

diff --git a/sqlite/stream/driver.cxx b/sqlite/stream/driver.cxx
new file mode 100644
index 0000000..5f708ba
--- /dev/null
+++ b/sqlite/stream/driver.cxx
@@ -0,0 +1,280 @@
+// file      : sqlite/stream/driver.cxx
+// copyright : Copyright (c) 2009-2015 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+// Test SQLite BLOB/TEXT incremental I/O.
+//
+
+#include <vector>
+#include <memory>   // std::auto_ptr
+#include <cassert>
+#include <iostream>
+
+#include <odb/sqlite/database.hxx>
+#include <odb/sqlite/transaction.hxx>
+
+#include <odb/sqlite/text-stream.hxx>
+#include <odb/sqlite/blob-stream.hxx>
+
+#include <common/common.hxx>
+
+#include "test.hxx"
+#include "test-odb.hxx"
+
+using namespace std;
+namespace sqlite = odb::sqlite;
+using namespace sqlite;
+
+template <typename S>
+void
+print (const S&)
+{
+  /*
+  cerr << s.db () << '.'
+       << s.table () << '.'
+       << s.column () << '#'
+       << s.rowid () << endl;
+  */
+}
+
+int
+main (int argc, char* argv[])
+{
+  try
+  {
+    auto_ptr<database> db (create_specific_database<database> (argc, argv));
+
+    string txt (1024 * 1024, 't');
+    vector<char> blb (1024 * 1024, 'b');
+
+    object o;
+
+    {
+      transaction tx (db->begin ());
+
+      o.t.size (txt.size ());
+      o.b.size (blb.size ());
+      o.bv.push_back (blob (blb.size ()));
+      o.bv.push_back (blob (blb.size ()));
+
+      db->persist (o);
+
+      print (o.t);
+      print (o.b);
+      print (o.bv[0]);
+      print (o.bv[1]);
+
+      blob_stream bs (o.b, true);
+      bs.write (blb.data (), blb.size ());
+
+      text_stream ts (o.t, true);
+      ts.write (txt.data (), txt.size ());
+
+      for (vector<blob>::iterator i (o.bv.begin ()); i != o.bv.end (); ++i)
+      {
+        blob_stream bs (*i, true);
+        bs.write (blb.data (), blb.size ());
+      }
+
+      tx.commit ();
+    }
+
+    {
+      transaction tx (db->begin ());
+      auto_ptr<object> p (db->load<object> (o.id));
+
+      print (p->t);
+      print (p->b);
+      print (p->bv[0]);
+      print (p->bv[1]);
+
+      text_stream ts (p->t, false);
+      string t (ts.size (), '*');
+      ts.read (const_cast<char*> (t.c_str ()), t.size ());
+      assert (t == txt);
+
+      blob_stream bs (p->b, false);
+      vector<char> b (bs.size (), '\0');
+      bs.read (b.data (), b.size ());
+      assert (b == blb);
+
+      for (vector<blob>::iterator i (p->bv.begin ()); i != p->bv.end (); ++i)
+      {
+        blob_stream bs (*i, false);
+        vector<char> b (bs.size (), '\0');
+        bs.read (b.data (), b.size ());
+        assert (b == blb);
+      }
+
+      assert (p->nb.null ());
+
+      tx.commit ();
+    }
+
+    txt.resize (txt.size () + 1, 't');
+    txt[0] = 'A';
+    txt[txt.size () - 1] = 'Z';
+
+    blb.resize (blb.size () - 1);
+    blb.front () = 'A';
+    blb.back () = 'Z';
+
+    {
+      transaction tx (db->begin ());
+
+      o.t.clear ();
+      o.t.size (txt.size ());
+
+      o.b.clear ();
+      o.b.size (blb.size ());
+
+      o.bv[0].clear ();
+      o.bv[0].size (blb.size ());
+
+      o.bv[1].clear ();
+      o.bv[1].size (blb.size ());
+
+      o.nb = blob (blb.size ());
+
+      db->update (o);
+
+      print (o.t);
+      print (o.b);
+      print (o.bv[0]);
+      print (o.bv[1]);
+      print (*o.nb);
+
+      {
+        text_stream ts (o.t, true);
+        ts.write (txt.data (), txt.size ());
+      }
+
+      {
+        blob_stream bs (o.b, true);
+        bs.write (blb.data (), blb.size ());
+      }
+
+      for (vector<blob>::iterator i (o.bv.begin ()); i != o.bv.end (); ++i)
+      {
+        blob_stream bs (*i, true);
+        bs.write (blb.data (), blb.size ());
+      }
+
+      {
+        blob_stream bs (*o.nb, true);
+        bs.write (blb.data (), blb.size ());
+      }
+
+      tx.commit ();
+    }
+
+    {
+      transaction tx (db->begin ());
+      auto_ptr<object> p (db->load<object> (o.id));
+
+      print (p->t);
+      print (p->b);
+      print (p->bv[0]);
+      print (p->bv[1]);
+      print (*p->nb);
+
+      text_stream ts (p->t, false);
+      string t (ts.size (), '*');
+      ts.read (const_cast<char*> (t.c_str ()), t.size ());
+      assert (t == txt);
+
+      blob_stream bs (p->b, false);
+      vector<char> b (bs.size (), '\0');
+      bs.read (b.data (), b.size ());
+      assert (b == blb);
+
+      for (vector<blob>::iterator i (p->bv.begin ()); i != p->bv.end (); ++i)
+      {
+        blob_stream bs (*i, false);
+        vector<char> b (bs.size (), '\0');
+        bs.read (b.data (), b.size ());
+        assert (b == blb);
+      }
+
+      {
+        blob_stream bs (*p->nb, false);
+        vector<char> b (bs.size (), '\0');
+        bs.read (b.data (), b.size ());
+        assert (b == blb);
+      }
+
+      tx.commit ();
+    }
+
+    // Test query.
+    //
+
+    txt.resize (32);
+    blb.resize (64);
+
+    {
+      transaction tx (db->begin ());
+
+      o.t.size (txt.size ());
+      o.b.size (blb.size ());
+      o.bv.clear ();
+      o.nb.reset ();
+
+      db->update (o);
+
+      text_stream ts (o.t, true);
+      ts.write (txt.data (), txt.size ());
+
+      blob_stream bs (o.b, true);
+      bs.write (blb.data (), blb.size ());
+
+      tx.commit ();
+    }
+
+    {
+      typedef sqlite::query<object> query;
+      transaction tx (db->begin ());
+
+      {
+        object o1 (db->query_value<object> (query::t == txt));
+
+        blob_stream bs (o1.b, false);
+        vector<char> b (bs.size (), '\0');
+        bs.read (b.data (), b.size ());
+        assert (b == blb);
+      }
+
+      {
+        object o1 (db->query_value<object> (query::b == blb));
+
+        text_stream ts (o1.t, false);
+        string t (ts.size (), '*');
+        ts.read (const_cast<char*> (t.c_str ()), t.size ());
+        assert (t == txt);
+      }
+
+      tx.commit ();
+    }
+
+    // Test view.
+    //
+    {
+      typedef sqlite::query<view> query;
+      transaction tx (db->begin ());
+
+      view v (db->query_value<view> (query::t == txt));
+
+      blob_stream bs (v.b, false);
+      vector<char> b (bs.size (), '\0');
+      bs.read (b.data (), b.size ());
+      assert (b == blb);
+
+      tx.commit ();
+    }
+  }
+  catch (const odb::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}