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Code Issues 18 Projects 3 Activity

sqlite now all bulk_create, MariaDB all single

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Philip Sargent
2026-01-31 20:45:53 +00:00
parent d41ee79606
commit e04554e0db
1 changed files with 27 additions and 21 deletions
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48
parsers/survex.py
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@@ -485,10 +485,11 @@ class LoadingSurvex:
the foreign keys are enabled and one can do queries on the database.
The sequence of survex blocks is constructed from the *include links,
depth first, so the list iof survex blocks is topologically sorted.
depth first, so the list of survex blocks is topologically sorted.
HOWEVER what matters to the .parent links is the topological sorting
of the *begin/*end inclusions, which may or may not match the *include sort
sequence. Yuk.
sequence. The survex dataset is currently OK, but pathological data
in future could expose this vulnerability.
"""
def get_toposorted_blocks(blocks):
@@ -588,8 +589,8 @@ class LoadingSurvex:
chunk,
update_conflicts=True, # root item probably exists already
# update_fields needed if we allow conflict update
update_fields=['name', 'title', 'parent', 'date',
'expedition', 'survexfile', 'scanswallet', 'legsall', 'legslength', 'foreigners',],
update_fields=['name', 'title', 'parent', 'ref_text', 'date',
'expedition', 'survexfile', 'scanswallet', 'legsall', 'legslength', 'foreigners',], # i.e. all of them
unique_fields=['_blockid']
)
print(f" - {len(chunk)} SurvexBlocks bulk-created in db", file=sys.stderr)
@@ -599,7 +600,7 @@ class LoadingSurvex:
print(message)
print(message, file=sys.stderr)
stash_data_issue(parser="survex", message=message)
# if failure, go and do them individually:
sb_save_mysql()
def sb_save_mysql():
@@ -608,7 +609,8 @@ class LoadingSurvex:
for sb in chunk:
sb.save() # simplest is best, if it works
continue
# Not using on MariaDB yet: tricky to get foreign keys working
# and survex blocks have a foreign key to itself: the "parent"
got_obj, created = SurvexBlock.objects.get_or_create(
_blockid=sb._blockid,
) # missing most fields
@@ -667,7 +669,8 @@ class LoadingSurvex:
# return
try:
SurvexPersonRole.objects.bulk_create(valid_list,
update_fields = ['survexblock', 'personname', 'person', 'personexpedition'],
update_fields = ['survexblock', 'personname', 'person',
'personexpedition'],
unique_fields = ['survexblock', 'personname', 'person', 'personexpedition']
)
print(f" - all {len(valid_list)} SurvexPersonRoles bulk-created to db", file=sys.stderr)
@@ -684,7 +687,8 @@ class LoadingSurvex:
ns = 0
for pr in valid_list:
pr.save() # simplest is best, if it works
continue
continue
# Not using on MariaDB yet: tricky to get foreign keys working
# This is not the complete set of fields we need:
got_obj, created = SurvexPersonRole.objects.get_or_create(
survexblock=pr.survexblock,
@@ -721,7 +725,7 @@ class LoadingSurvex:
parser="survex",
message=message
)
print(f" - {len(valid_list)} SurvexPersonRoles in list", file=sys.stderr)
print(f" - {len(valid_list)} SurvexPersonRoles in ist, savibg.. ({connection.vendor})", file=sys.stderr)
if connection.vendor == 'mysql':
pr_save_mysql()
else:
@@ -733,28 +737,30 @@ class LoadingSurvex:
"""This should be run only after all the survexblocks have
been saved to the database and so have _blockid that can be used as a ForeignKey
Actually we need to update all the fields, not just the co-unique ones,
so this is not working correctly at all.
Actually we need to create all the fields, not just the co-unique ones,
but that is the default. "update_fields" has effect only in conflicts.
"""
def qm_save_sqlite():
qm_save_mysql()
return
# MariaDB/MySQL do not support (and don't need) unique_fields by sqlite neeeds them
# qm_save_mysql()
# return
# MariaDB/MySQL do not support (and don't need) unique_fields but sqlite needs them
bulk_kwargs = {
"update_conflicts": True,
"update_fields": ['block', 'cave', 'blockname', 'grade', 'number', 'expoyear'],
# https://docs.djangoproject.com/en/6.0/ref/models/querysets/#bulk-create
"update_fields": ['block', 'cave', 'blockname', 'grade',
'number', 'expoyear'], # these updated IF a conflict fails, see documn.
"unique_fields": ['cave', 'blockname', 'grade', 'number', 'expoyear'],
}
bulk_kwargs
try:
QM.objects.bulk_create(qms_valid_list, **bulk_kwargs)
QM.objects.bulk_create(qms_valid_list, **bulk_kwargs)
print(f" - QMs bulk-created in db", file=sys.stderr)
except Exception as e:
message = f"\n ! - EXCEPTION '{e}' - in QM bulk update. Falling back onto sequential updates"
print(message)
print(message, file=sys.stderr)
stash_data_issue(parser="survex", message=message)
# if failure, go and do them individually:
qm_save_mysql()
def qm_save_mysql():
@@ -763,8 +769,8 @@ class LoadingSurvex:
for qm in qms_valid_list:
qm.save() # simplest is best, if it works
continue
# This is not the complete set of fields we need:
# Not using on MariaDB yet: tricky to get foreign keys working
# This is not the complete set of fields we need. Needs extendin
got_obj, created = QM.objects.get_or_create(
cave_id=qm.cave_id,
blockname=qm.blockname,
@@ -786,7 +792,7 @@ class LoadingSurvex:
qms = []
for blk in self._pending_qm_saves:
qms += self._pending_qm_saves[blk]
print(f" - Saving {len(qms)} QMs to db", file=sys.stderr)
print(f" - Saving {len(qms)} QMs to db, saving.. ({connection.vendor})", file=sys.stderr)
qms_valid_list = self.validify(qms, "QM")
if connection.vendor == 'mysql':