4 DATABASE_NAME = 'contacts.db'
7 MIDDLELEVEL_FIELD = 'ou'
20 id integer primary key,
24 create table relation(
30 id integer primary key,
37 create index i_fields on fields (id);
38 create index i_data on data (id);
39 create index i_struct on struct(parent);
40 create index i_relation on relation(data_id);
48 def __init__(self, basedir):
49 self._path = os.path.join(basedir, DATABASE_NAME)
51 if not os.path.exists(self._path):
54 self.conn = sqlite3.connect(self._path)
57 """Creates new databse."""
59 self.conn = sqlite3.connect(self._path)
60 self.conn.executescript(SCHEMA)
64 """Closes connection with database."""
70 """Save all changes."""
75 """Clear all database tables."""
77 execute = self.conn.execute
78 execute("DELETE from data")
79 execute("DELETE from fields")
80 execute("DELETE from struct")
81 execute("DELETE from relation")
85 """Returns all fields from FIELDS table."""
87 return [item[0] for item in self.conn.execute( \
88 "SELECT name FROM fields").fetchall()]
90 # operations with DATA table
91 def add_entry(self, entry):
92 """Adds new entry to database."""
94 execute = self.conn.execute
96 if not 'uid' in entry or not 'o' in entry:
100 _id = execute("SELECT MAX(id) FROM data").fetchone()[0] \
105 for field, values in entry.items():
106 # update FIELDS table
107 field_id = execute("SELECT id, name FROM fields WHERE name=?", \
110 execute("INSERT INTO fields values(NULL, ?)", (field,))
111 field_id = execute("SELECT last_insert_rowid()").fetchone()[0]
113 field_id = field_id[0]
117 execute("INSERT INTO data values(?,?,?)", (_id, field_id, value))
119 # update STRUCT table
120 name = entry[TOPLEVEL_FIELD][0]
121 parent_id = execute("SELECT id FROM struct WHERE name=? ", \
123 if parent_id is None: # update STRUCT table (TOPLEVEL_FIELD)
124 execute("INSERT INTO struct values(NULL,?,0)", (name,))
125 parent_id = execute("SELECT last_insert_rowid()").fetchone()[0]
127 parent_id = parent_id[0]
129 name = entry[MIDDLELEVEL_FIELD][0]
130 child_id = execute("SELECT id FROM struct WHERE name=? AND parent=?", \
131 (name, parent_id)).fetchone()
132 if child_id is None: # update STRUCT table (MIDDLELEVEL_FIELD)
133 execute("INSERT INTO struct values(NULL,?,?)", (name, parent_id))
134 child_id = execute("SELECT last_insert_rowid()").fetchone()[0]
136 child_id = child_id[0]
138 # update RELATION table
139 execute("INSERT INTO relation values(?,?)", (_id, child_id))
141 def get_entry(self, value):
142 """Gets full entry imformation from DATA table."""
144 _id = self.conn.execute("SELECT id FROM data WHERE value=?", \
145 (value,)).fetchone()[0]
146 return dict([(key, value) for key, value in self.conn.execute("\
147 SELECT field_id, value FROM data WHERE id=?", (_id,)).fetchall()])
149 def get_folders(self, parent=None):
151 Returns list of all folders (items with folders and files)
155 if parent is None: # return all folders on level2
156 return self.conn.execute("SELECT DISTINCT name, id FROM struct \
157 WHERE parent!=0 ORDER BY name ASC").fetchall()
159 return self.conn.execute("SELECT DISTINCT name, id FROM struct \
160 WHERE parent=? ORDER BY name ASC", (parent,)).fetchall()
162 def get_files(self, fields, parent=0):
163 """Returns list of all files from DATA table."""
166 fields_string = ','.join('%r' % (field,) for field in fields)
167 if parent == 0: # get all files
168 sql_res = self.conn.execute("select data.id as id, fields.name, \
169 data.value as name from data left join fields on data.field_id=\
170 fields.id left join relation on data.id=relation.data_id where \
171 fields.name in (%s)" % fields_string)
172 else: # get files for selected parent
173 sql_res = self.conn.execute("select data.id as id, fields.name, \
174 data.value as name from data left join fields on data.field_id=\
175 fields.id left join relation on data.id=relation.data_id where \
176 fields.name in (%s) and relation.struct_id=?" % fields_string, \
180 for _id, fname, fvalue in sql_res.fetchall():
181 if not items_dict.has_key(_id):
183 items_dict[_id][fname] = fvalue
186 def get_entry_by_id(self, _id):
187 """Returns full entry by it id."""
189 sql_res = self.conn.execute("SELECT fields.name, data.value AS name \
190 FROM data LEFT JOIN fields ON data.field_id=fields.id LEFT JOIN \
191 relation ON data.id=relation.data_id WHERE data.id=?", (_id,))
195 return dict(sql_res.fetchall())
197 def get_all_entries(self):
198 """Returns list of all entries."""
200 ids = [item[0] for item in self.conn.execute("""SELECT DISTINCT id \
201 FROM data""").fetchall()]
202 return [self.get_entry_by_id(_id) for _id in ids]
207 if __name__ == "__main__":
209 #db.update_field('test')
210 #print db.get_field_id_by_name('fax')
211 #print db.get_entry_by_id(1)
212 #print db.get_all_entries()