/usr/lib/python2.7/dist-packages/PythonCard/gadflyDatabase.py is in python-pythoncard 0.8.2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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__date__ = "$Date: 2004/08/12 19:40:39 $"
"""
flatfileDatabase was derived from the addresses sample.
gadflyDatabase was derived from the flatfileDatabase
"""
from PythonCard import log, model
from PythonCard import flatfileDatabase
import os, sys
import ConfigParser
import time
import gadfly
from gadfly.store import StorageError
CONFIG_FILE = 'gadflyDatabase.ini'
IGNORE_PREFIX = 'ignore'
class Document(flatfileDatabase.Document):
def __init__(self, view, db=None, tableName=None):
self.view = view
self.documentChanged = 0
self.saveDocumentOnRecordChange = 1
self.current = -1
self.fieldTypes = {'date':['Calendar'],
'boolean':['CheckBox'],
'integer':['Slider', 'Spinner'],
'list':['Choice', 'List', 'RadioGroup'],
'string':['CodeEditor',
'PasswordField',
'TextField',
'TextArea']
}
self.allFieldTypes = []
for value in self.fieldTypes.itervalues():
self.allFieldTypes += value
self.fieldNames = self.getFieldNames()
self.searchableFields = self.getSearchableFields()
self.sortableFields = self.getSortableFields()
if db is None:
self.records = []
else:
self.tableName = tableName
self.openFile(db, tableName)
self._db = db
def newRecord(self):
self.saveRecord(self.current)
if self.current == -1:
self.current = 0
else:
stmt = "UPDATE %s SET ID=ID+1 WHERE ID > %d" % (self.tableName, self.current)
cursor = self._db.cursor()
cursor.execute(stmt)
self._db.commit()
self.current += 1
self.records.insert(self.current, {})
self.clearViewFields()
self.displayRecord(self.current) # Needed to sync the model & the view
self.updateStatusBar()
def deleteRecord(self):
if self.current != -1:
del self.records[self.current]
stmt = "DELETE FROM %s WHERE id = %d" % (self.tableName, self.current)
cursor = self._db.cursor()
cursor.execute(stmt)
self._db.commit()
# Re-sequence the remaining records
if len(self.records) > 0:
stmt = "UPDATE %s SET ID=ID-1 WHERE ID > %d" % (self.tableName, self.current)
cursor = self._db.cursor()
cursor.execute(stmt)
self._db.commit()
if len(self.records) == 0:
self.current = -1
elif self.current == len(self.records):
# the last record was deleted,
# so display the next to last record
self.current = self.current - 1
if self.current == -1:
self.clearViewFields()
self.updateStatusBar()
else:
self.displayRecord(self.current)
def saveRecord(self, recordNumber):
"Save the record <recordNumber> to the database"
if recordNumber == -1:
recordNumber = 0
self.current = 0
self.records = []
self.records.append({})
n = 1
else:
n = len(self.records)
if n > 0 and recordNumber > -1 and recordNumber < n:
record = self.records[recordNumber]
if recordNumber == self.current:
changed = 0
for name in self.fieldNames:
try:
field = self.getViewField(name)
if (name not in record) or (field != record[name]):
record[name] = field
changed = 1
except:
# missing a field
pass
else:
# Just use the value in self.records
changed = 1
if changed:
self.documentChanged = changed
for field in record:
self.records[recordNumber][field] = record[field]
cursor = self._db.cursor()
stmt = "INSERT INTO %s ( ID, " % self.tableName
values = []
for field in self.fieldNames:
stmt += "%s, " % field
stmt = stmt[:-2] + ") VALUES ( %d, " % recordNumber
for field in self.fieldNames:
stmt += "?, "
values.append(self.getViewField(field))
stmt = stmt[:-2] + ")"
try:
cursor.execute(stmt, tuple(values))
except StorageError:
# Update failed, try an insert
self._db.rollback()
stmt = "UPDATE %s SET " % self.tableName
values = []
for field in self.fieldNames:
stmt += "%s = ?, " % field
values.append(self.getViewField(field) )
stmt = stmt[:-2] + "WHERE ID = %d" % recordNumber
cursor.execute(stmt, tuple(values))
self._db.commit()
self.displayRecord(recordNumber)
def sortRecords(self):
"Sort the records in memory, and in the database"
flatfileDatabase.Document.sortRecords(self)
index = 0
for record in self.records:
self.saveRecord(index)
index += 1
def openFile(self, db, tableName):
self.commonOpenFileInit(tableName)
cursor = db.cursor()
# Check to see if our table exists, if it doesn't create it
stmt = "SELECT count(*) FROM __table_names__ WHERE table_name = ?"
cursor.execute(stmt, (tableName.upper(), ))
result = cursor.fetchall()[0][0]
if result == 0:
self.createTable(db, tableName)
else:
stmt = "SELECT "
for column in self.fieldNames:
stmt += "%s, " % column
stmt = stmt[:-2] + ", ID FROM " + tableName
stmt += " ORDER BY ID"
cursor.execute(stmt)
for data in cursor.fetchall():
record = {}
index = 0
for column in self.fieldNames:
record[column]=data[index]
index += 1
self.records.append(record)
if self.current == -1 and len(self.records) > 0:
self.displayRecord(0)
def createTable(self, db, tableName):
"Create our actual application table"
cursor = db.cursor()
stmt = "CREATE TABLE %s ( ID integer, " % tableName
for column in self.fieldNames:
stmt += "%s varchar, " % column
stmt = stmt[:-2] + ")"
cursor.execute(stmt)
# And a unique index on the primary key
stmt = "CREATE UNIQUE INDEX %s ON %s (ID)" % ( tableName+'_pk', tableName)
cursor.execute(stmt)
db.commit()
def saveFile(self):
# always save the records list
# for transparent saves
self.saveRecord(self.current)
class GadflyDatabase(flatfileDatabase.FlatfileDatabase):
def on_initialize(self, event):
startTime = time.time()
# allow a subclass to provide its own configuration so it doesn't need
# to have a config file. See companies sample
if not hasattr(self, 'configFilename'):
self.configFilename = CONFIG_FILE
db, tableName = self.getDatabase(self.configFilename)
self.document = Document(self, db, tableName)
self.lastFind = {'searchText':'',
'replaceText':'',
'wholeWordsOnly':0,
'caseSensitive':0,
'field':'',
'offset':0,
'searchField':None
}
self._initComplete = 1
log.info("startup took %f seconds" % (time.time() - startTime))
def on_findRecord_command(self, event):
"Save the current record and find a new one"
self.doSave()
flatfileDatabase.FlatfileDatabase.on_findRecord_command(self, event)
def getDatabase(self, filename):
"Return the db and table name from <filename>"
# assume the ini file is in the same directory as the script
path = os.path.join(os.path.dirname(sys.argv[0]), filename)
parser = ConfigParser.ConfigParser()
parser.read(path)
dbDir = parser.get('ConfigData', 'dbDir')
dbName = parser.get('ConfigData', 'dbName')
tableName = parser.get('ConfigData', 'tableName')
try:
db = gadfly.gadfly(dbName, dbDir)
except IOError:
db = gadfly.gadfly()
db.startup(dbName, dbDir)
return db, tableName
def doSave(self):
self.document.saveFile()
if __name__ == '__main__':
# assume the ini file is in the same directory as the script
path = os.path.join(os.path.dirname(sys.argv[0]), CONFIG_FILE)
parser = ConfigParser.ConfigParser()
parser.read(path)
# the resourceFile is settable via the ini file
resourceFile = parser.get('ConfigData', 'resourceFile')
app = model.Application(GadflyDatabase, resourceFile)
app.MainLoop()
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