]> git.notmuchmail.org Git - notmuch/blobdiff - lib/query.cc
lib: Eliminate some redundant includes of xapian.h
[notmuch] / lib / query.cc
index 7c1df90c39cce262246b1930f913f90e57a34f46..7916421e4a0068847a0fc13b71514c1258893a42 100644 (file)
 
 #include <glib.h> /* GHashTable, GPtrArray */
 
-#include <xapian.h>
-
 struct _notmuch_query {
     notmuch_database_t *notmuch;
     const char *query_string;
     notmuch_sort_t sort;
 };
 
-struct _notmuch_messages {
+typedef struct _notmuch_mset_messages {
+    notmuch_messages_t base;
     notmuch_database_t *notmuch;
     Xapian::MSetIterator iterator;
     Xapian::MSetIterator iterator_end;
-};
+} notmuch_mset_messages_t;
 
 struct _notmuch_threads {
-    notmuch_database_t *notmuch;
-    GPtrArray *threads;
-    unsigned int index;
+    notmuch_query_t *query;
+    GHashTable *threads;
+    notmuch_messages_t *messages;
+
+    /* This thread ID is our iterator state. */
+    const char *thread_id;
 };
 
 notmuch_query_t *
@@ -61,17 +63,29 @@ notmuch_query_create (notmuch_database_t *notmuch,
 
     query->query_string = talloc_strdup (query, query_string);
 
-    query->sort = NOTMUCH_SORT_DATE;
+    query->sort = NOTMUCH_SORT_NEWEST_FIRST;
 
     return query;
 }
 
+const char *
+notmuch_query_get_query_string (notmuch_query_t *query)
+{
+    return query->query_string;
+}
+
 void
 notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort)
 {
     query->sort = sort;
 }
 
+notmuch_sort_t
+notmuch_query_get_sort (notmuch_query_t *query)
+{
+    return query->sort;
+}
+
 /* We end up having to call the destructors explicitly because we had
  * to use "placement new" in order to initialize C++ objects within a
  * block that we allocated with talloc. So C++ is making talloc
@@ -79,7 +93,7 @@ notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort)
  * talloc_set_destructor at all otherwise).
  */
 static int
-_notmuch_messages_destructor (notmuch_messages_t *messages)
+_notmuch_messages_destructor (notmuch_mset_messages_t *messages)
 {
     messages->iterator.~MSetIterator ();
     messages->iterator_end.~MSetIterator ();
@@ -88,19 +102,26 @@ _notmuch_messages_destructor (notmuch_messages_t *messages)
 }
 
 notmuch_messages_t *
-notmuch_query_search_messages (notmuch_query_t *query,
-                              int first,
-                              int max_messages)
+notmuch_query_search_messages (notmuch_query_t *query)
 {
     notmuch_database_t *notmuch = query->notmuch;
     const char *query_string = query->query_string;
-    notmuch_messages_t *messages;
+    notmuch_mset_messages_t *messages;
 
-    messages = talloc (query, notmuch_messages_t);
+    messages = talloc (query, notmuch_mset_messages_t);
     if (unlikely (messages == NULL))
        return NULL;
 
     try {
+
+       messages->base.is_of_list_type = FALSE;
+       messages->base.iterator = NULL;
+       messages->notmuch = notmuch;
+       new (&messages->iterator) Xapian::MSetIterator ();
+       new (&messages->iterator_end) Xapian::MSetIterator ();
+
+       talloc_set_destructor (messages, _notmuch_messages_destructor);
+
        Xapian::Enquire enquire (*notmuch->xapian_db);
        Xapian::Query mail_query (talloc_asprintf (query, "%s%s",
                                                   _find_prefix ("type"),
@@ -111,9 +132,12 @@ notmuch_query_search_messages (notmuch_query_t *query,
                              Xapian::QueryParser::FLAG_PHRASE |
                              Xapian::QueryParser::FLAG_LOVEHATE |
                              Xapian::QueryParser::FLAG_BOOLEAN_ANY_CASE |
-                             Xapian::QueryParser::FLAG_WILDCARD);
+                             Xapian::QueryParser::FLAG_WILDCARD |
+                             Xapian::QueryParser::FLAG_PURE_NOT);
 
-       if (strcmp (query_string, "") == 0) {
+       if (strcmp (query_string, "") == 0 ||
+           strcmp (query_string, "*") == 0)
+       {
            final_query = mail_query;
        } else {
            string_query = notmuch->query_parser->
@@ -122,16 +146,20 @@ notmuch_query_search_messages (notmuch_query_t *query,
                                         mail_query, string_query);
        }
 
+       enquire.set_weighting_scheme (Xapian::BoolWeight());
+
        switch (query->sort) {
-       case NOTMUCH_SORT_DATE:
+       case NOTMUCH_SORT_OLDEST_FIRST:
            enquire.set_sort_by_value (NOTMUCH_VALUE_TIMESTAMP, FALSE);
            break;
-       case NOTMUCH_SORT_DATE_REVERSE:
+       case NOTMUCH_SORT_NEWEST_FIRST:
            enquire.set_sort_by_value (NOTMUCH_VALUE_TIMESTAMP, TRUE);
            break;
        case NOTMUCH_SORT_MESSAGE_ID:
            enquire.set_sort_by_value (NOTMUCH_VALUE_MESSAGE_ID, FALSE);
            break;
+        case NOTMUCH_SORT_UNSORTED:
+           break;
        }
 
 #if DEBUG_QUERY
@@ -140,112 +168,105 @@ notmuch_query_search_messages (notmuch_query_t *query,
 
        enquire.set_query (final_query);
 
-       if (max_messages == -1)
-           max_messages = notmuch->xapian_db->get_doccount ();
-       mset = enquire.get_mset (first, max_messages);
-
-       messages->notmuch = notmuch;
-
-       new (&messages->iterator) Xapian::MSetIterator ();
-       new (&messages->iterator_end) Xapian::MSetIterator ();
-
-       talloc_set_destructor (messages, _notmuch_messages_destructor);
+       mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ());
 
        messages->iterator = mset.begin ();
        messages->iterator_end = mset.end ();
 
+       return &messages->base;
+
     } catch (const Xapian::Error &error) {
-       fprintf (stderr, "A Xapian exception occurred: %s\n",
+       fprintf (stderr, "A Xapian exception occurred performing query: %s\n",
                 error.get_msg().c_str());
+       fprintf (stderr, "Query string was: %s\n", query->query_string);
+       notmuch->exception_reported = TRUE;
+       talloc_free (messages);
+       return NULL;
     }
-
-    return messages;
 }
 
-/* Glib objects force use to use a talloc destructor as well, (but not
- * nearly as ugly as the for messages due to C++ objects). At
- * this point, I'd really like to have some talloc-friendly
- * equivalents for the few pieces of glib that I'm using. */
-static int
-_notmuch_threads_destructor (notmuch_threads_t *threads)
+notmuch_bool_t
+_notmuch_mset_messages_valid (notmuch_messages_t *messages)
 {
-    g_ptr_array_free (threads->threads, TRUE);
+    notmuch_mset_messages_t *mset_messages;
 
-    return 0;
+    mset_messages = (notmuch_mset_messages_t *) messages;
+
+    return (mset_messages->iterator != mset_messages->iterator_end);
 }
 
-notmuch_threads_t *
-notmuch_query_search_threads (notmuch_query_t *query,
-                             int first,
-                             int max_threads)
+notmuch_message_t *
+_notmuch_mset_messages_get (notmuch_messages_t *messages)
 {
-    notmuch_threads_t *threads;
-    notmuch_thread_t *thread;
-    const char *thread_id;
-    notmuch_messages_t *messages;
     notmuch_message_t *message;
-    GHashTable *seen;
-    int messages_seen = 0, threads_seen = 0;
+    Xapian::docid doc_id;
+    notmuch_private_status_t status;
+    notmuch_mset_messages_t *mset_messages;
 
-    threads = talloc (query, notmuch_threads_t);
-    if (threads == NULL)
-       return NULL;
+    mset_messages = (notmuch_mset_messages_t *) messages;
 
-    threads->notmuch = query->notmuch;
-    threads->threads = g_ptr_array_new ();
-    threads->index = 0;
+    if (! _notmuch_mset_messages_valid (&mset_messages->base))
+       return NULL;
 
-    talloc_set_destructor (threads, _notmuch_threads_destructor);
+    doc_id = *mset_messages->iterator;
 
-    seen = g_hash_table_new_full (g_str_hash, g_str_equal,
-                                 free, NULL);
+    message = _notmuch_message_create (mset_messages,
+                                      mset_messages->notmuch, doc_id,
+                                      &status);
 
-    while (max_threads < 0 || threads_seen < first + max_threads)
+    if (message == NULL &&
+       status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
     {
-       int messages_seen_previously = messages_seen;
+       INTERNAL_ERROR ("a messages iterator contains a non-existent document ID.\n");
+    }
 
-       for (messages = notmuch_query_search_messages (query,
-                                                      messages_seen,
-                                                      max_threads);
-            notmuch_messages_has_more (messages);
-            notmuch_messages_advance (messages))
-       {
-           message = notmuch_messages_get (messages);
+    return message;
+}
 
-           thread_id = notmuch_message_get_thread_id (message);
+void
+_notmuch_mset_messages_move_to_next (notmuch_messages_t *messages)
+{
+    notmuch_mset_messages_t *mset_messages;
 
-           if (! g_hash_table_lookup_extended (seen,
-                                               thread_id, NULL,
-                                               (void **) &thread))
-           {
-               if (threads_seen >= first) {
-                   thread = _notmuch_thread_create (query, query->notmuch,
-                                                    thread_id,
-                                                    query->query_string);
-                   g_ptr_array_add (threads->threads, thread);
-               } else {
-                   thread = NULL;
-               }
+    mset_messages = (notmuch_mset_messages_t *) messages;
 
-               g_hash_table_insert (seen, xstrdup (thread_id), thread);
+    mset_messages->iterator++;
+}
 
-               threads_seen++;
-           }
+/* Glib objects force use to use a talloc destructor as well, (but not
+ * nearly as ugly as the for messages due to C++ objects). At
+ * this point, I'd really like to have some talloc-friendly
+ * equivalents for the few pieces of glib that I'm using. */
+static int
+_notmuch_threads_destructor (notmuch_threads_t *threads)
+{
+    g_hash_table_unref (threads->threads);
 
-           notmuch_message_destroy (message);
+    return 0;
+}
 
-           messages_seen++;
+notmuch_threads_t *
+notmuch_query_search_threads (notmuch_query_t *query)
+{
+    notmuch_threads_t *threads;
 
-           if (max_threads >= 0 && threads_seen >= first + max_threads)
-               break;
-       }
+    threads = talloc (query, notmuch_threads_t);
+    if (threads == NULL)
+       return NULL;
 
-       /* Stop if we're not seeing any more messages. */
-       if (messages_seen == messages_seen_previously)
-           break;
+    threads->query = query;
+    threads->threads = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                             free, NULL);
+
+    threads->messages = notmuch_query_search_messages (query);
+    if (threads->messages == NULL) {
+           talloc_free (threads);
+           return NULL;
     }
 
-    g_hash_table_unref (seen);
+    threads->thread_id = NULL;
+
+    talloc_set_destructor (threads, _notmuch_threads_destructor);
 
     return threads;
 }
@@ -257,68 +278,53 @@ notmuch_query_destroy (notmuch_query_t *query)
 }
 
 notmuch_bool_t
-notmuch_messages_has_more (notmuch_messages_t *messages)
-{
-    return (messages->iterator != messages->iterator_end);
-}
-
-notmuch_message_t *
-notmuch_messages_get (notmuch_messages_t *messages)
+notmuch_threads_valid (notmuch_threads_t *threads)
 {
     notmuch_message_t *message;
-    Xapian::docid doc_id;
-    notmuch_private_status_t status;
 
-    if (! notmuch_messages_has_more (messages))
-       return NULL;
-
-    doc_id = *messages->iterator;
-
-    message = _notmuch_message_create (messages,
-                                      messages->notmuch, doc_id,
-                                      &status);
+    if (threads->thread_id)
+       return TRUE;
 
-    if (message == NULL &&
-       status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
+    while (notmuch_messages_valid (threads->messages))
     {
-       INTERNAL_ERROR ("a messages iterator contains a non-existent document ID.\n");
-    }
+       message = notmuch_messages_get (threads->messages);
 
-    return message;
-}
+       threads->thread_id = notmuch_message_get_thread_id (message);
 
-void
-notmuch_messages_advance (notmuch_messages_t *messages)
-{
-    messages->iterator++;
-}
+       if (! g_hash_table_lookup_extended (threads->threads,
+                                           threads->thread_id,
+                                           NULL, NULL))
+       {
+           g_hash_table_insert (threads->threads,
+                                xstrdup (threads->thread_id), NULL);
+           notmuch_messages_move_to_next (threads->messages);
+           return TRUE;
+       }
 
-void
-notmuch_messages_destroy (notmuch_messages_t *messages)
-{
-    talloc_free (messages);
-}
+       notmuch_messages_move_to_next (threads->messages);
+    }
 
-notmuch_bool_t
-notmuch_threads_has_more (notmuch_threads_t *threads)
-{
-    return (threads->index < threads->threads->len);
+    threads->thread_id = NULL;
+    return FALSE;
 }
 
 notmuch_thread_t *
 notmuch_threads_get (notmuch_threads_t *threads)
 {
-    if (! notmuch_threads_has_more (threads))
+    if (! notmuch_threads_valid (threads))
        return NULL;
 
-    return (notmuch_thread_t *) g_ptr_array_index (threads->threads,
-                                                  threads->index);
+    return _notmuch_thread_create (threads->query,
+                                  threads->query->notmuch,
+                                  threads->thread_id,
+                                  threads->query->query_string,
+                                  threads->query->sort);
 }
 
 void
-notmuch_threads_advance (notmuch_threads_t *threads)
+notmuch_threads_move_to_next (notmuch_threads_t *threads)
 {
-    threads->index++;
+    threads->thread_id = NULL;
 }
 
 void
@@ -326,3 +332,57 @@ notmuch_threads_destroy (notmuch_threads_t *threads)
 {
     talloc_free (threads);
 }
+
+unsigned
+notmuch_query_count_messages (notmuch_query_t *query)
+{
+    notmuch_database_t *notmuch = query->notmuch;
+    const char *query_string = query->query_string;
+    Xapian::doccount count = 0;
+
+    try {
+       Xapian::Enquire enquire (*notmuch->xapian_db);
+       Xapian::Query mail_query (talloc_asprintf (query, "%s%s",
+                                                  _find_prefix ("type"),
+                                                  "mail"));
+       Xapian::Query string_query, final_query;
+       Xapian::MSet mset;
+       unsigned int flags = (Xapian::QueryParser::FLAG_BOOLEAN |
+                             Xapian::QueryParser::FLAG_PHRASE |
+                             Xapian::QueryParser::FLAG_LOVEHATE |
+                             Xapian::QueryParser::FLAG_BOOLEAN_ANY_CASE |
+                             Xapian::QueryParser::FLAG_WILDCARD |
+                             Xapian::QueryParser::FLAG_PURE_NOT);
+
+       if (strcmp (query_string, "") == 0 ||
+           strcmp (query_string, "*") == 0)
+       {
+           final_query = mail_query;
+       } else {
+           string_query = notmuch->query_parser->
+               parse_query (query_string, flags);
+           final_query = Xapian::Query (Xapian::Query::OP_AND,
+                                        mail_query, string_query);
+       }
+
+       enquire.set_weighting_scheme(Xapian::BoolWeight());
+       enquire.set_docid_order(Xapian::Enquire::ASCENDING);
+
+#if DEBUG_QUERY
+       fprintf (stderr, "Final query is:\n%s\n", final_query.get_description().c_str());
+#endif
+
+       enquire.set_query (final_query);
+
+       mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ());
+
+       count = mset.get_matches_estimated();
+
+    } catch (const Xapian::Error &error) {
+       fprintf (stderr, "A Xapian exception occurred: %s\n",
+                error.get_msg().c_str());
+       fprintf (stderr, "Query string was: %s\n", query->query_string);
+    }
+
+    return count;
+}