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Calculate dependencies with fewer sqlite queries.

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This commit is contained in:
Avery Pennarun 2010-12-09 02:13:36 -08:00
commit fb79851530
2 changed files with 21 additions and 11 deletions
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27
state.py
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@ -112,8 +112,15 @@ class File(object):
__slots__ = ['id', 'name', 'is_generated',
'checked_runid', 'changed_runid',
'stamp', 'csum']
def _init_from_cols(self, cols):
(self.id, self.name, self.is_generated,
self.checked_runid, self.changed_runid,
self.stamp, self.csum) = cols
def __init__(self, id=None, name=None):
def __init__(self, id=None, name=None, cols=None):
if cols:
return self._init_from_cols(cols)
q = ('select rowid, name, is_generated, checked_runid, changed_runid, '
' stamp, csum '
' from Files ')
@ -136,9 +143,7 @@ class File(object):
d.commit()
row = d.execute(q, l).fetchone()
assert(row)
(self.id, self.name, self.is_generated,
self.checked_runid, self.changed_runid,
self.stamp, self.csum) = row
self._init_from_cols(row)
def save(self):
if not os.path.exists('%s/.redo' % vars.BASE):
@ -180,11 +185,17 @@ class File(object):
and self.changed_runid >= self.checked_runid))
def deps(self):
q = "select mode, source from Deps where target=?"
for mode,source_id in db().execute(q, [self.id]).fetchall():
q = ('select Deps.mode, Deps.source, '
' name, is_generated, checked_runid, changed_runid, '
' stamp, csum '
' from Files '
' join Deps on Files.rowid = Deps.source '
' where target=?')
for row in db().execute(q, [self.id]).fetchall():
mode = row[0]
cols = row[1:]
assert(mode in ('c', 'm'))
name = File(id=source_id).name
yield mode,name
yield mode,File(cols=cols)
def zap_deps(self):
debug2('zap-deps: %r\n' % self.name)