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abstract _apply_constraints_for_array_attributes for wallet server

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Lex Berezhny 2019-05-06 17:15:25 -04:00
parent 4702bea9f0
commit 82c739daa6
1 changed files with 46 additions and 27 deletions
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73
lbrynet/wallet/server/db.py
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@ -12,6 +12,49 @@ from lbrynet.schema.url import URL, normalize_name
from lbrynet.wallet.transaction import Transaction, Output from lbrynet.wallet.transaction import Transaction, Output
ATTRIBUTE_ARRAY_MAX_LENGTH = 100
def _apply_constraints_for_array_attributes(constraints, attr):
any_items = constraints.pop(f'any_{attr}s', [])[:ATTRIBUTE_ARRAY_MAX_LENGTH]
if any_items:
constraints.update({
f'$any_{attr}{i}': item for i, item in enumerate(any_items)
})
values = ', '.join(
f':$any_{attr}{i}' for i in range(len(any_items))
)
constraints[f'claim.txo_hash__in#_any_{attr}'] = f"""
SELECT DISTINCT txo_hash FROM {attr} WHERE {attr} IN ({values})
"""
all_items = constraints.pop(f'all_{attr}s', [])[:ATTRIBUTE_ARRAY_MAX_LENGTH]
if all_items:
constraints[f'$all_{attr}_count'] = len(all_items)
constraints.update({
f'$all_{attr}{i}': item for i, item in enumerate(all_items)
})
values = ', '.join(
f':$all_{attr}{i}' for i in range(len(all_items))
)
constraints[f'claim.txo_hash__in#_all_{attr}'] = f"""
SELECT txo_hash FROM {attr} WHERE {attr} IN ({values})
GROUP BY txo_hash HAVING COUNT({attr}) = :$all_{attr}_count
"""
not_items = constraints.pop(f'not_{attr}s', [])[:ATTRIBUTE_ARRAY_MAX_LENGTH]
if not_items:
constraints.update({
f'$not_{attr}{i}': item for i, item in enumerate(not_items)
})
values = ', '.join(
f':$not_{attr}{i}' for i in range(len(not_items))
)
constraints[f'claim.txo_hash__not_in#_not_{attr}'] = f"""
SELECT DISTINCT txo_hash FROM {attr} WHERE {attr} IN ({values})
"""
class SQLDB: class SQLDB:
TRENDING_BLOCKS = 300 # number of blocks over which to calculate trending TRENDING_BLOCKS = 300 # number of blocks over which to calculate trending
@ -359,33 +402,9 @@ class SQLDB:
tx_hash + struct.pack('<I', nout) tx_hash + struct.pack('<I', nout)
) )
any_tags = constraints.pop('any_tags', [])[:100] _apply_constraints_for_array_attributes(constraints, 'tag')
if any_tags: _apply_constraints_for_array_attributes(constraints, 'language')
constraints.update({ _apply_constraints_for_array_attributes(constraints, 'location')
f'$any_tags{i}': tag for i, tag in enumerate(any_tags)
})
constraints['claim.txo_hash__in'] = """
SELECT DISTINCT txo_hash FROM tag WHERE tag IN ({})
""".format(', '.join(f':$any_tags{i}' for i in range(len(any_tags))))
all_tags = constraints.pop('all_tags', [])[:100]
if all_tags:
constraints['$all_tags_count'] = len(all_tags)
constraints.update({
f'$all_tags{i}': tag for i, tag in enumerate(all_tags)
})
constraints['claim.txo_hash__in'] = """
SELECT txo_hash FROM tag WHERE tag IN ({}) GROUP BY txo_hash HAVING COUNT(tag) = :$all_tags_count
""".format(', '.join(f':$all_tags{i}' for i in range(len(all_tags))))
not_tags = constraints.pop('not_tags', [])[:100]
if not_tags:
constraints.update({
f'$not_tags{i}': tag for i, tag in enumerate(not_tags)
})
constraints['claim.txo_hash__not_in'] = """
SELECT DISTINCT txo_hash FROM tag WHERE tag IN ({})
""".format(', '.join(f':$not_tags{i}' for i in range(len(not_tags))))
return self.db.execute(*query( return self.db.execute(*query(
f""" f"""