-
Notifications
You must be signed in to change notification settings - Fork 0
/
seis_database.py
63 lines (50 loc) · 1.84 KB
/
seis_database.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
""" module for seistools database interaction using sqlite3
"""
from functools import wraps
import pandas as pd
import sqlite3
from sqlalchemy import create_engine
from seis_settings import DATABASE
class DbUtils:
"""utility methods for database"""
database = DATABASE
@classmethod
def connect(cls, func):
@wraps(func)
def wrapper(*args, **kwargs):
result = None
try:
connection = sqlite3.connect(cls.database)
connection.enable_load_extension(True)
connection.execute('SELECT load_extension("mod_spatialite")')
cursor = connection.cursor()
result = func(*args, cursor, **kwargs)
connection.commit()
except sqlite3.Error as error:
print(f"Error while connect to sqlite {cls.database}: {error}")
finally:
if connection:
cursor.close()
connection.close()
return result
return wrapper
@classmethod
def get_db_engine(cls):
return create_engine(f"sqlite:///{cls.database}")
@classmethod
def create_database(cls):
connection = None
try:
connection = sqlite3.connect(cls.database)
connection.enable_load_extension(True)
connection.execute('SELECT load_extension("mod_spatialite")')
connection.execute("SELECT InitSpatialMetaData(1);")
except sqlite3.Error as error:
print(f"error while connect to sqlite {cls.database}: " f"{error}")
finally:
if connection:
connection.close()
@classmethod
def db_table_to_df(cls, db_table: str) -> pd.DataFrame:
db_engine = cls.get_db_engine()
return pd.read_sql_query(f"select * from {db_table}", con=db_engine)