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Initial implementation of background prefetching: #4462

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This implements a background prefetch of all normalized messages
in the folder.  It does not implement the chunked prefetch scheme
we discussed.  It uses a simple priority scheme as well, only
pulling one message at a time, although it may be worthwhile
later implementing a pull-back system where the prefetch waits
until higher-priority traffic completes before continuing.
This commit is contained in:
Jim Nelson 2012-03-13 16:03:42 -07:00
parent fc6feab340
commit a19a3d0ea7
10 changed files with 278 additions and 52 deletions
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45
src/engine/sqlite/api/sqlite-folder.vala
View file

@ -112,9 +112,9 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
cancellable);
}
public override async void create_email_async(Geary.Email email, Cancellable? cancellable = null)
public override async bool create_email_async(Geary.Email email, Cancellable? cancellable = null)
throws Error {
yield atomic_create_email_async(null, email, cancellable);
return yield atomic_create_email_async(null, email, cancellable);
}
// TODO: Need to break out IMAP-specific functionality
@ -201,7 +201,7 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
return true;
}
private async void atomic_create_email_async(Transaction? supplied_transaction, Geary.Email email,
private async bool atomic_create_email_async(Transaction? supplied_transaction, Geary.Email email,
Cancellable? cancellable) throws Error {
check_open();
@ -217,7 +217,7 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
if (!associated || message_id == Sqlite.Row.INVALID_ID)
message_id = yield search_for_duplicate_async(transaction, email, cancellable);
// if already associated or a duplicate, associated
// if already associated or a duplicate, merge and/or associate
if (message_id != Sqlite.Row.INVALID_ID) {
if (!associated)
yield associate_with_folder_async(transaction, message_id, email, cancellable);
@ -227,7 +227,7 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
if (supplied_transaction == null)
yield transaction.commit_if_required_async(cancellable);
return;
return false;
}
// not found, so create and associate with this folder
@ -256,6 +256,8 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
yield transaction.commit_async(cancellable);
notify_messages_appended(count);
return true;
}
public override async Gee.List<Geary.Email>? list_email_async(int low, int count,
@ -528,8 +530,8 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
public async Gee.Map<Geary.EmailIdentifier, Geary.EmailFlags> get_email_flags_async(
Gee.List<Geary.EmailIdentifier> to_get, Cancellable? cancellable) throws Error {
Gee.Map<Geary.EmailIdentifier, Geary.EmailFlags> map = new Gee.HashMap<Geary.EmailIdentifier,
Geary.EmailFlags>();
Gee.Map<Geary.EmailIdentifier, Geary.EmailFlags> map = new Gee.HashMap<
Geary.EmailIdentifier, Geary.EmailFlags>(Hashable.hash_func, Equalable.equal_func);
Transaction transaction = yield db.begin_transaction_async("Folder.get_email_flags_async",
cancellable);
@ -695,5 +697,34 @@ private class Geary.Sqlite.Folder : Geary.AbstractFolder, Geary.LocalFolder, Gea
return id;
}
public async Gee.Map<Geary.EmailIdentifier, Geary.Email.Field>? get_email_fields_by_id_async(
Gee.Collection<Geary.EmailIdentifier> ids, Cancellable? cancellable) throws Error {
check_open();
if (ids.size == 0)
return null;
Gee.HashMap<Geary.EmailIdentifier, Geary.Email.Field> map = new Gee.HashMap<
Geary.EmailIdentifier, Geary.Email.Field>(Hashable.hash_func, Equalable.equal_func);
Transaction transaction = yield db.begin_transaction_async("get_email_fields_by_id_async",
cancellable);
foreach (Geary.EmailIdentifier id in ids) {
MessageLocationRow? row = yield location_table.fetch_by_ordering_async(transaction,
folder_row.id, ((Geary.Imap.EmailIdentifier) id).uid.value, cancellable);
if (row == null)
continue;
Geary.Email.Field fields;
if (yield message_table.fetch_fields_async(transaction, row.message_id, out fields,
cancellable)) {
map.set(id, fields);
}
}
return (map.size > 0) ? map : null;
}
}