← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/switch.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2009-06-18 20:25:52 UTC
  • mfrom: (4413.5.15 1.16-chk-direct)
  • Revision ID: pqm@pqm.ubuntu.com-20090618202552-xyl6tcvbxtm8bupf
(jam) Improve initial commit performance by creating a CHKMap in bulk,
        rather than via O(tree) map() calls.

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/switch.py
1
 
# Copyright (C) 2007, 2009, 2010 Canonical Ltd.
 
1
# Copyright (C) 2006, 2007 Canonical Ltd.
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
17
17
# Original author: David Allouche
18
18
 
19
19
from bzrlib import errors, merge, revision
20
 
from bzrlib.branch import Branch
 
20
from bzrlib.branch import Branch, BranchFormat, BranchReferenceFormat
 
21
from bzrlib.bzrdir import BzrDir
21
22
from bzrlib.trace import note
22
23
 
23
24
 
24
 
def _run_post_switch_hooks(control_dir, to_branch, force, revision_id):
25
 
    from bzrlib.branch import SwitchHookParams
26
 
    hooks = Branch.hooks['post_switch']
27
 
    if not hooks:
28
 
        return
29
 
    params = SwitchHookParams(control_dir, to_branch, force, revision_id)
30
 
    for hook in hooks:
31
 
        hook(params)
32
 
 
33
 
def switch(control_dir, to_branch, force=False, quiet=False, revision_id=None):
 
25
def switch(control_dir, to_branch, force=False):
34
26
    """Switch the branch associated with a checkout.
35
27
 
36
28
    :param control_dir: BzrDir of the checkout to change
37
29
    :param to_branch: branch that the checkout is to reference
38
30
    :param force: skip the check for local commits in a heavy checkout
39
 
    :param revision_id: revision ID to switch to.
40
31
    """
41
32
    _check_pending_merges(control_dir, force)
42
33
    try:
45
36
        source_repository = to_branch.repository
46
37
    _set_branch_location(control_dir, to_branch, force)
47
38
    tree = control_dir.open_workingtree()
48
 
    _update(tree, source_repository, quiet, revision_id)
49
 
    _run_post_switch_hooks(control_dir, to_branch, force, revision_id)
 
39
    _update(tree, source_repository)
 
40
 
50
41
 
51
42
def _check_pending_merges(control, force=False):
52
43
    """Check that there are no outstanding pending merges before switching.
78
69
    branch_format = control.find_branch_format()
79
70
    if branch_format.get_reference(control) is not None:
80
71
        # Lightweight checkout: update the branch reference
81
 
        branch_format.set_reference(control, None, to_branch)
 
72
        branch_format.set_reference(control, to_branch)
82
73
    else:
83
74
        b = control.open_branch()
84
75
        bound_branch = b.get_bound_location()
127
118
    return False
128
119
 
129
120
 
130
 
def _update(tree, source_repository, quiet=False, revision_id=None):
 
121
def _update(tree, source_repository):
131
122
    """Update a working tree to the latest revision of its branch.
132
123
 
133
124
    :param tree: the working tree
136
127
    tree.lock_tree_write()
137
128
    try:
138
129
        to_branch = tree.branch
139
 
        if revision_id is None:
140
 
            revision_id = to_branch.last_revision()
141
 
        if tree.last_revision() == revision_id:
142
 
            if not quiet:
143
 
                note("Tree is up to date at revision %d.", to_branch.revno())
 
130
        if tree.last_revision() == to_branch.last_revision():
 
131
            note("Tree is up to date at revision %d.", to_branch.revno())
144
132
            return
145
133
        base_tree = source_repository.revision_tree(tree.last_revision())
146
 
        merge.Merge3Merger(tree, tree, base_tree, to_branch.repository.revision_tree(revision_id))
 
134
        merge.Merge3Merger(tree, tree, base_tree, to_branch.basis_tree())
147
135
        tree.set_last_revision(to_branch.last_revision())
148
 
        if not quiet:
149
 
            note('Updated to revision %d.' % to_branch.revno())
 
136
        note('Updated to revision %d.' % to_branch.revno())
150
137
    finally:
151
138
        tree.unlock()