2346
2392
:param revision_ids: The expected revision ids of the inventories.
2393
:param ordering: optional ordering, e.g. 'topological'. If not
2394
specified, the order of revision_ids will be preserved (by
2395
buffering if necessary).
2347
2396
:return: An iterator of inventories.
2349
2398
if ((None in revision_ids)
2350
2399
or (_mod_revision.NULL_REVISION in revision_ids)):
2351
2400
raise ValueError('cannot get null revision inventory')
2352
return self._iter_inventories(revision_ids)
2401
return self._iter_inventories(revision_ids, ordering)
2354
def _iter_inventories(self, revision_ids):
2403
def _iter_inventories(self, revision_ids, ordering):
2355
2404
"""single-document based inventory iteration."""
2356
for text, revision_id in self._iter_inventory_xmls(revision_ids):
2357
yield self.deserialise_inventory(revision_id, text)
2405
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2406
for text, revision_id in inv_xmls:
2407
yield self._deserialise_inventory(revision_id, text)
2359
def _iter_inventory_xmls(self, revision_ids):
2409
def _iter_inventory_xmls(self, revision_ids, ordering):
2410
if ordering is None:
2411
order_as_requested = True
2412
ordering = 'unordered'
2414
order_as_requested = False
2360
2415
keys = [(revision_id,) for revision_id in revision_ids]
2361
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2418
if order_as_requested:
2419
key_iter = iter(keys)
2420
next_key = key_iter.next()
2421
stream = self.inventories.get_record_stream(keys, ordering, True)
2362
2422
text_chunks = {}
2363
2423
for record in stream:
2364
2424
if record.storage_kind != 'absent':
2365
text_chunks[record.key] = record.get_bytes_as('chunked')
2425
chunks = record.get_bytes_as('chunked')
2426
if order_as_requested:
2427
text_chunks[record.key] = chunks
2429
yield ''.join(chunks), record.key[-1]
2367
2431
raise errors.NoSuchRevision(self, record.key)
2369
chunks = text_chunks.pop(key)
2370
yield ''.join(chunks), key[-1]
2432
if order_as_requested:
2433
# Yield as many results as we can while preserving order.
2434
while next_key in text_chunks:
2435
chunks = text_chunks.pop(next_key)
2436
yield ''.join(chunks), next_key[-1]
2438
next_key = key_iter.next()
2439
except StopIteration:
2440
# We still want to fully consume the get_record_stream,
2441
# just in case it is not actually finished at this point
2372
def deserialise_inventory(self, revision_id, xml):
2445
def _deserialise_inventory(self, revision_id, xml):
2373
2446
"""Transform the xml into an inventory object.
2375
2448
:param revision_id: The expected revision id of the inventory.
2376
2449
:param xml: A serialised inventory.
2378
2451
result = self._serializer.read_inventory_from_string(xml, revision_id,
2379
entry_cache=self._inventory_entry_cache)
2452
entry_cache=self._inventory_entry_cache,
2453
return_from_cache=self._safe_to_return_from_cache)
2380
2454
if result.revision_id != revision_id:
2381
2455
raise AssertionError('revision id mismatch %s != %s' % (
2382
2456
result.revision_id, revision_id))
2385
def serialise_inventory(self, inv):
2386
return self._serializer.write_inventory_to_string(inv)
2388
def _serialise_inventory_to_lines(self, inv):
2389
return self._serializer.write_inventory_to_lines(inv)
2391
2459
def get_serializer_format(self):
2392
2460
return self._serializer.format_num
2394
2462
@needs_read_lock
2395
def get_inventory_xml(self, revision_id):
2396
"""Get inventory XML as a file object."""
2397
texts = self._iter_inventory_xmls([revision_id])
2463
def _get_inventory_xml(self, revision_id):
2464
"""Get serialized inventory as a string."""
2465
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2399
2467
text, revision_id = texts.next()
2400
2468
except StopIteration:
2401
2469
raise errors.HistoryMissing(self, 'inventory', revision_id)
2405
def get_inventory_sha1(self, revision_id):
2406
"""Return the sha1 hash of the inventory entry
2408
return self.get_revision(revision_id).inventory_sha1
2410
2472
def get_rev_id_for_revno(self, revno, known_pair):
2411
2473
"""Return the revision id of a revno, given a later (revno, revid)
2412
2474
pair in the same history.
3660
3753
# This is redundant with format.check_conversion_target(), however that
3661
3754
# raises an exception, and we just want to say "False" as in we won't
3662
3755
# support converting between these formats.
3756
if 'IDS_never' in debug.debug_flags:
3663
3758
if source.supports_rich_root() and not target.supports_rich_root():
3665
3760
if (source._format.supports_tree_reference
3666
3761
and not target._format.supports_tree_reference):
3763
if target._fallback_repositories and target._format.supports_chks:
3764
# IDS doesn't know how to copy CHKs for the parent inventories it
3765
# adds to stacked repos.
3767
if 'IDS_always' in debug.debug_flags:
3769
# Only use this code path for local source and target. IDS does far
3770
# too much IO (both bandwidth and roundtrips) over a network.
3771
if not source.bzrdir.transport.base.startswith('file:///'):
3773
if not target.bzrdir.transport.base.startswith('file:///'):
3670
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3777
def _get_trees(self, revision_ids, cache):
3779
for rev_id in revision_ids:
3781
possible_trees.append((rev_id, cache[rev_id]))
3783
# Not cached, but inventory might be present anyway.
3785
tree = self.source.revision_tree(rev_id)
3786
except errors.NoSuchRevision:
3787
# Nope, parent is ghost.
3790
cache[rev_id] = tree
3791
possible_trees.append((rev_id, tree))
3792
return possible_trees
3794
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3671
3795
"""Get the best delta and base for this revision.
3673
3797
:return: (basis_id, delta)
3675
possible_trees = [(parent_id, cache[parent_id])
3676
for parent_id in parent_ids
3677
if parent_id in cache]
3678
if len(possible_trees) == 0:
3679
# There either aren't any parents, or the parents aren't in the
3680
# cache, so just use the last converted tree
3681
possible_trees.append((basis_id, cache[basis_id]))
3800
# Generate deltas against each tree, to find the shortest.
3801
texts_possibly_new_in_tree = set()
3683
3802
for basis_id, basis_tree in possible_trees:
3684
3803
delta = tree.inventory._make_delta(basis_tree.inventory)
3804
for old_path, new_path, file_id, new_entry in delta:
3805
if new_path is None:
3806
# This file_id isn't present in the new rev, so we don't
3810
# Rich roots are handled elsewhere...
3812
kind = new_entry.kind
3813
if kind != 'directory' and kind != 'file':
3814
# No text record associated with this inventory entry.
3816
# This is a directory or file that has changed somehow.
3817
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3685
3818
deltas.append((len(delta), basis_id, delta))
3687
3820
return deltas[0][1:]
3689
def _get_parent_keys(self, root_key, parent_map):
3690
"""Get the parent keys for a given root id."""
3691
root_id, rev_id = root_key
3692
# Include direct parents of the revision, but only if they used
3693
# the same root_id and are heads.
3695
for parent_id in parent_map[rev_id]:
3696
if parent_id == _mod_revision.NULL_REVISION:
3698
if parent_id not in self._revision_id_to_root_id:
3699
# We probably didn't read this revision, go spend the
3700
# extra effort to actually check
3702
tree = self.source.revision_tree(parent_id)
3703
except errors.NoSuchRevision:
3704
# Ghost, fill out _revision_id_to_root_id in case we
3705
# encounter this again.
3706
# But set parent_root_id to None since we don't really know
3707
parent_root_id = None
3709
parent_root_id = tree.get_root_id()
3710
self._revision_id_to_root_id[parent_id] = None
3712
parent_root_id = self._revision_id_to_root_id[parent_id]
3713
if root_id == parent_root_id:
3714
# With stacking we _might_ want to refer to a non-local
3715
# revision, but this code path only applies when we have the
3716
# full content available, so ghosts really are ghosts, not just
3717
# the edge of local data.
3718
parent_keys.append((parent_id,))
3720
# root_id may be in the parent anyway.
3722
tree = self.source.revision_tree(parent_id)
3723
except errors.NoSuchRevision:
3724
# ghost, can't refer to it.
3728
parent_keys.append((tree.inventory[root_id].revision,))
3729
except errors.NoSuchId:
3732
g = graph.Graph(self.source.revisions)
3733
heads = g.heads(parent_keys)
3735
for key in parent_keys:
3736
if key in heads and key not in selected_keys:
3737
selected_keys.append(key)
3738
return tuple([(root_id,)+ key for key in selected_keys])
3740
def _new_root_data_stream(self, root_keys_to_create, parent_map):
3741
for root_key in root_keys_to_create:
3742
parent_keys = self._get_parent_keys(root_key, parent_map)
3743
yield versionedfile.FulltextContentFactory(root_key,
3744
parent_keys, None, '')
3746
def _fetch_batch(self, revision_ids, basis_id, cache):
3822
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3823
"""Find all parent revisions that are absent, but for which the
3824
inventory is present, and copy those inventories.
3826
This is necessary to preserve correctness when the source is stacked
3827
without fallbacks configured. (Note that in cases like upgrade the
3828
source may be not have _fallback_repositories even though it is
3832
for parents in parent_map.values():
3833
parent_revs.update(parents)
3834
present_parents = self.source.get_parent_map(parent_revs)
3835
absent_parents = set(parent_revs).difference(present_parents)
3836
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3837
(rev_id,) for rev_id in absent_parents)
3838
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3839
for parent_tree in self.source.revision_trees(parent_inv_ids):
3840
current_revision_id = parent_tree.get_revision_id()
3841
parents_parents_keys = parent_invs_keys_for_stacking[
3842
(current_revision_id,)]
3843
parents_parents = [key[-1] for key in parents_parents_keys]
3844
basis_id = _mod_revision.NULL_REVISION
3845
basis_tree = self.source.revision_tree(basis_id)
3846
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3847
self.target.add_inventory_by_delta(
3848
basis_id, delta, current_revision_id, parents_parents)
3849
cache[current_revision_id] = parent_tree
3851
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3747
3852
"""Fetch across a few revisions.
3749
3854
:param revision_ids: The revisions to copy
3750
3855
:param basis_id: The revision_id of a tree that must be in cache, used
3751
3856
as a basis for delta when no other base is available
3752
3857
:param cache: A cache of RevisionTrees that we can use.
3858
:param a_graph: A Graph object to determine the heads() of the
3859
rich-root data stream.
3753
3860
:return: The revision_id of the last converted tree. The RevisionTree
3754
3861
for it will be in cache
3761
3868
pending_deltas = []
3762
3869
pending_revisions = []
3763
3870
parent_map = self.source.get_parent_map(revision_ids)
3871
self._fetch_parent_invs_for_stacking(parent_map, cache)
3872
self.source._safe_to_return_from_cache = True
3764
3873
for tree in self.source.revision_trees(revision_ids):
3874
# Find a inventory delta for this revision.
3875
# Find text entries that need to be copied, too.
3765
3876
current_revision_id = tree.get_revision_id()
3766
3877
parent_ids = parent_map.get(current_revision_id, ())
3878
parent_trees = self._get_trees(parent_ids, cache)
3879
possible_trees = list(parent_trees)
3880
if len(possible_trees) == 0:
3881
# There either aren't any parents, or the parents are ghosts,
3882
# so just use the last converted tree.
3883
possible_trees.append((basis_id, cache[basis_id]))
3767
3884
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3886
revision = self.source.get_revision(current_revision_id)
3887
pending_deltas.append((basis_id, delta,
3888
current_revision_id, revision.parent_ids))
3769
3889
if self._converting_to_rich_root:
3770
3890
self._revision_id_to_root_id[current_revision_id] = \
3771
3891
tree.get_root_id()
3772
# Find text entries that need to be copied
3892
# Determine which texts are in present in this revision but not in
3893
# any of the available parents.
3894
texts_possibly_new_in_tree = set()
3773
3895
for old_path, new_path, file_id, entry in delta:
3774
if new_path is not None:
3777
if not self.target.supports_rich_root():
3778
# The target doesn't support rich root, so we don't
3781
if self._converting_to_rich_root:
3782
# This can't be copied normally, we have to insert
3784
root_keys_to_create.add((file_id, entry.revision))
3786
text_keys.add((file_id, entry.revision))
3787
revision = self.source.get_revision(current_revision_id)
3788
pending_deltas.append((basis_id, delta,
3789
current_revision_id, revision.parent_ids))
3896
if new_path is None:
3897
# This file_id isn't present in the new rev
3901
if not self.target.supports_rich_root():
3902
# The target doesn't support rich root, so we don't
3905
if self._converting_to_rich_root:
3906
# This can't be copied normally, we have to insert
3908
root_keys_to_create.add((file_id, entry.revision))
3911
texts_possibly_new_in_tree.add((file_id, entry.revision))
3912
for basis_id, basis_tree in possible_trees:
3913
basis_inv = basis_tree.inventory
3914
for file_key in list(texts_possibly_new_in_tree):
3915
file_id, file_revision = file_key
3917
entry = basis_inv[file_id]
3918
except errors.NoSuchId:
3920
if entry.revision == file_revision:
3921
texts_possibly_new_in_tree.remove(file_key)
3922
text_keys.update(texts_possibly_new_in_tree)
3790
3923
pending_revisions.append(revision)
3791
3924
cache[current_revision_id] = tree
3792
3925
basis_id = current_revision_id
3926
self.source._safe_to_return_from_cache = False
3793
3927
# Copy file texts
3794
3928
from_texts = self.source.texts
3795
3929
to_texts = self.target.texts
3796
3930
if root_keys_to_create:
3797
root_stream = self._new_root_data_stream(root_keys_to_create,
3931
root_stream = _mod_fetch._new_root_data_stream(
3932
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3933
self.source, graph=a_graph)
3799
3934
to_texts.insert_record_stream(root_stream)
3800
3935
to_texts.insert_record_stream(from_texts.get_record_stream(
3801
3936
text_keys, self.target._format._fetch_order,
4403
4599
return (not self.from_repository._format.rich_root_data and
4404
4600
self.to_format.rich_root_data)
4406
def _get_inventory_stream(self, revision_ids):
4602
def _get_inventory_stream(self, revision_ids, missing=False):
4407
4603
from_format = self.from_repository._format
4408
if (from_format.supports_chks and self.to_format.supports_chks
4409
and (from_format._serializer == self.to_format._serializer)):
4410
# Both sides support chks, and they use the same serializer, so it
4411
# is safe to transmit the chk pages and inventory pages across
4413
return self._get_chk_inventory_stream(revision_ids)
4414
elif (not from_format.supports_chks):
4415
# Source repository doesn't support chks. So we can transmit the
4416
# inventories 'as-is' and either they are just accepted on the
4417
# target, or the Sink will properly convert it.
4418
return self._get_simple_inventory_stream(revision_ids)
4604
if (from_format.supports_chks and self.to_format.supports_chks and
4605
from_format.network_name() == self.to_format.network_name()):
4606
raise AssertionError(
4607
"this case should be handled by GroupCHKStreamSource")
4608
elif 'forceinvdeltas' in debug.debug_flags:
4609
return self._get_convertable_inventory_stream(revision_ids,
4610
delta_versus_null=missing)
4611
elif from_format.network_name() == self.to_format.network_name():
4613
return self._get_simple_inventory_stream(revision_ids,
4615
elif (not from_format.supports_chks and not self.to_format.supports_chks
4616
and from_format._serializer == self.to_format._serializer):
4617
# Essentially the same format.
4618
return self._get_simple_inventory_stream(revision_ids,
4420
# XXX: Hack to make not-chk->chk fetch: copy the inventories as
4421
# inventories. Note that this should probably be done somehow
4422
# as part of bzrlib.repository.StreamSink. Except JAM couldn't
4423
# figure out how a non-chk repository could possibly handle
4424
# deserializing an inventory stream from a chk repo, as it
4425
# doesn't have a way to understand individual pages.
4426
return self._get_convertable_inventory_stream(revision_ids)
4621
# Any time we switch serializations, we want to use an
4622
# inventory-delta based approach.
4623
return self._get_convertable_inventory_stream(revision_ids,
4624
delta_versus_null=missing)
4428
def _get_simple_inventory_stream(self, revision_ids):
4626
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4627
# NB: This currently reopens the inventory weave in source;
4628
# using a single stream interface instead would avoid this.
4429
4629
from_weave = self.from_repository.inventories
4631
delta_closure = True
4633
delta_closure = not self.delta_on_metadata()
4430
4634
yield ('inventories', from_weave.get_record_stream(
4431
4635
[(rev_id,) for rev_id in revision_ids],
4432
self.inventory_fetch_order(),
4433
not self.delta_on_metadata()))
4435
def _get_chk_inventory_stream(self, revision_ids):
4436
"""Fetch the inventory texts, along with the associated chk maps."""
4437
# We want an inventory outside of the search set, so that we can filter
4438
# out uninteresting chk pages. For now we use
4439
# _find_revision_outside_set, but if we had a Search with cut_revs, we
4440
# could use that instead.
4441
start_rev_id = self.from_repository._find_revision_outside_set(
4443
start_rev_key = (start_rev_id,)
4444
inv_keys_to_fetch = [(rev_id,) for rev_id in revision_ids]
4445
if start_rev_id != _mod_revision.NULL_REVISION:
4446
inv_keys_to_fetch.append((start_rev_id,))
4447
# Any repo that supports chk_bytes must also support out-of-order
4448
# insertion. At least, that is how we expect it to work
4449
# We use get_record_stream instead of iter_inventories because we want
4450
# to be able to insert the stream as well. We could instead fetch
4451
# allowing deltas, and then iter_inventories, but we don't know whether
4452
# source or target is more 'local' anway.
4453
inv_stream = self.from_repository.inventories.get_record_stream(
4454
inv_keys_to_fetch, 'unordered',
4455
True) # We need them as full-texts so we can find their references
4456
uninteresting_chk_roots = set()
4457
interesting_chk_roots = set()
4458
def filter_inv_stream(inv_stream):
4459
for idx, record in enumerate(inv_stream):
4460
### child_pb.update('fetch inv', idx, len(inv_keys_to_fetch))
4461
bytes = record.get_bytes_as('fulltext')
4462
chk_inv = inventory.CHKInventory.deserialise(
4463
self.from_repository.chk_bytes, bytes, record.key)
4464
if record.key == start_rev_key:
4465
uninteresting_chk_roots.add(chk_inv.id_to_entry.key())
4466
p_id_map = chk_inv.parent_id_basename_to_file_id
4467
if p_id_map is not None:
4468
uninteresting_chk_roots.add(p_id_map.key())
4471
interesting_chk_roots.add(chk_inv.id_to_entry.key())
4472
p_id_map = chk_inv.parent_id_basename_to_file_id
4473
if p_id_map is not None:
4474
interesting_chk_roots.add(p_id_map.key())
4475
### pb.update('fetch inventory', 0, 2)
4476
yield ('inventories', filter_inv_stream(inv_stream))
4477
# Now that we have worked out all of the interesting root nodes, grab
4478
# all of the interesting pages and insert them
4479
### pb.update('fetch inventory', 1, 2)
4480
interesting = chk_map.iter_interesting_nodes(
4481
self.from_repository.chk_bytes, interesting_chk_roots,
4482
uninteresting_chk_roots)
4483
def to_stream_adapter():
4484
"""Adapt the iter_interesting_nodes result to a single stream.
4486
iter_interesting_nodes returns records as it processes them, along
4487
with keys. However, we only want to return the records themselves.
4489
for record, items in interesting:
4490
if record is not None:
4492
# XXX: We could instead call get_record_stream(records.keys())
4493
# ATM, this will always insert the records as fulltexts, and
4494
# requires that you can hang on to records once you have gone
4495
# on to the next one. Further, it causes the target to
4496
# recompress the data. Testing shows it to be faster than
4497
# requesting the records again, though.
4498
yield ('chk_bytes', to_stream_adapter())
4499
### pb.update('fetch inventory', 2, 2)
4501
def _get_convertable_inventory_stream(self, revision_ids):
4502
# XXX: One of source or target is using chks, and they don't have
4503
# compatible serializations. The StreamSink code expects to be
4504
# able to convert on the target, so we need to put
4505
# bytes-on-the-wire that can be converted
4506
yield ('inventories', self._stream_invs_as_fulltexts(revision_ids))
4508
def _stream_invs_as_fulltexts(self, revision_ids):
4636
self.inventory_fetch_order(), delta_closure))
4638
def _get_convertable_inventory_stream(self, revision_ids,
4639
delta_versus_null=False):
4640
# The two formats are sufficiently different that there is no fast
4641
# path, so we need to send just inventorydeltas, which any
4642
# sufficiently modern client can insert into any repository.
4643
# The StreamSink code expects to be able to
4644
# convert on the target, so we need to put bytes-on-the-wire that can
4645
# be converted. That means inventory deltas (if the remote is <1.19,
4646
# RemoteStreamSink will fallback to VFS to insert the deltas).
4647
yield ('inventory-deltas',
4648
self._stream_invs_as_deltas(revision_ids,
4649
delta_versus_null=delta_versus_null))
4651
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4652
"""Return a stream of inventory-deltas for the given rev ids.
4654
:param revision_ids: The list of inventories to transmit
4655
:param delta_versus_null: Don't try to find a minimal delta for this
4656
entry, instead compute the delta versus the NULL_REVISION. This
4657
effectively streams a complete inventory. Used for stuff like
4658
filling in missing parents, etc.
4509
4660
from_repo = self.from_repository
4510
from_serializer = from_repo._format._serializer
4511
4661
revision_keys = [(rev_id,) for rev_id in revision_ids]
4512
4662
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4513
for inv in self.from_repository.iter_inventories(revision_ids):
4514
# XXX: This is a bit hackish, but it works. Basically,
4515
# CHKSerializer 'accidentally' supports
4516
# read/write_inventory_to_string, even though that is never
4517
# the format that is stored on disk. It *does* give us a
4518
# single string representation for an inventory, so live with
4520
# This would be far better if we had a 'serialized inventory
4521
# delta' form. Then we could use 'inventory._make_delta', and
4522
# transmit that. This would both be faster to generate, and
4523
# result in fewer bytes-on-the-wire.
4524
as_bytes = from_serializer.write_inventory_to_string(inv)
4663
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4665
inventories = self.from_repository.iter_inventories(
4666
revision_ids, 'topological')
4667
format = from_repo._format
4668
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4669
inventory_cache = lru_cache.LRUCache(50)
4670
null_inventory = from_repo.revision_tree(
4671
_mod_revision.NULL_REVISION).inventory
4672
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4673
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4674
# repo back into a non-rich-root repo ought to be allowed)
4675
serializer = inventory_delta.InventoryDeltaSerializer(
4676
versioned_root=format.rich_root_data,
4677
tree_references=format.supports_tree_reference)
4678
for inv in inventories:
4525
4679
key = (inv.revision_id,)
4526
4680
parent_keys = parent_map.get(key, ())
4682
if not delta_versus_null and parent_keys:
4683
# The caller did not ask for complete inventories and we have
4684
# some parents that we can delta against. Make a delta against
4685
# each parent so that we can find the smallest.
4686
parent_ids = [parent_key[0] for parent_key in parent_keys]
4687
for parent_id in parent_ids:
4688
if parent_id not in invs_sent_so_far:
4689
# We don't know that the remote side has this basis, so
4692
if parent_id == _mod_revision.NULL_REVISION:
4693
parent_inv = null_inventory
4695
parent_inv = inventory_cache.get(parent_id, None)
4696
if parent_inv is None:
4697
parent_inv = from_repo.get_inventory(parent_id)
4698
candidate_delta = inv._make_delta(parent_inv)
4699
if (delta is None or
4700
len(delta) > len(candidate_delta)):
4701
delta = candidate_delta
4702
basis_id = parent_id
4704
# Either none of the parents ended up being suitable, or we
4705
# were asked to delta against NULL
4706
basis_id = _mod_revision.NULL_REVISION
4707
delta = inv._make_delta(null_inventory)
4708
invs_sent_so_far.add(inv.revision_id)
4709
inventory_cache[inv.revision_id] = inv
4710
delta_serialized = ''.join(
4711
serializer.delta_to_lines(basis_id, key[-1], delta))
4527
4712
yield versionedfile.FulltextContentFactory(
4528
key, parent_keys, None, as_bytes)
4713
key, parent_keys, None, delta_serialized)
4531
4716
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
added
removed
bzrlib/repository.py
