class TasksView(IndexView):
'''Database "view" that shows tasks that are indexed'''
def __init__(self, db):
IndexView.__init__(self, db)
self._pages = PagesViewInternal(db)
# Test the db really has a tasklist
try:
db.execute('SELECT * FROM tasklist LIMIT 1')
except sqlite3.OperationalError:
raise ValueError, 'No tasklist in index'
def list_open_tasks(self, parent=None):
'''List tasks
@param parent: the parent task (as returned by this method) or C{None} to list
all top level tasks
@returns: a list of tasks at this level as sqlite Row objects
'''
if parent: parentid = parent['id']
else: parentid = 0
# Sort:
# started tasks by prio, due date, page + id to keep order in page
# not-started tasks by start date, ...
today = str(datetime.date.today())
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.parent=? and tasklist.start<=?
ORDER BY tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (parentid, today)):
yield row
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.parent=? and tasklist.start>?
ORDER BY tasklist.start ASC, tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (parentid, today)):
yield row
def list_open_tasks_flatlist(self):
'''List tasks
@returns: a list of tasks as sqlite Row objects
'''
# Sort:
# started tasks by prio, due date, page + id to keep order in page
# not-started tasks by start date, ...
today = str(datetime.date.today())
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.start<=? and hasopenchildren=0
ORDER BY tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (today, )):
yield row
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.start>? and hasopenchildren=0
ORDER BY tasklist.start ASC, tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (today, )):
yield row
def get_task(self, taskid):
row = self.db.execute('SELECT * FROM tasklist WHERE id=?',
(taskid, )).fetchone()
return row
def get_path(self, task):
'''Get the L{Path} for the source of a task
@param task: the task (as returned by L{list_tasks()}
@returns: an L{IndexPath} object
'''
return self._pages.get_pagename(task['source'])
class TasksView(IndexView):
'''Database "view" that shows tasks that are indexed'''
def __init__(self, db):
IndexView.__init__(self, db)
self._pages = PagesViewInternal(db)
# Test the db really has a tasklist
try:
db.execute('SELECT * FROM tasklist LIMIT 1')
except sqlite3.OperationalError:
raise ValueError('No tasklist in index')
def list_tasks_in_work_order(self, source):
'''
list tasks in order that they can be worked
:param source:
:return:
row dict with keys ['id', 'source', 'parent', 'haschildren', 'hasopenchildren', 'open', 'prio', 'start', 'due', 'tags', 'description']
'''
import networkx as nx
parent_id = 0
G = nx.DiGraph()
tasks = {}
def add_nodes(parent, source, dependant):
for row in self.db.execute(
'''
SELECT tasklist.*, pages.name as name FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.parent=? and pages.name=?
ORDER BY tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (parent, source)):
G.add_node(row['id'])
tasks[row['id']] = row
if dependant:
# parent depends on child to complete to start
# arg2 depends on arg1 being finished first
G.add_edge(row['id'], dependant)
if row['dependency_page']:
_, dep_page = self._pages.resolve_link(
Path(source),
HRef.new_from_wiki_link(row['dependency_page']))
add_nodes(0, dep_page.name, row['id'])
add_nodes(row['id'], source, row['id'])
add_nodes(parent_id, source, parent_id)
added = set()
for id in nx.topological_sort(G):
if set(G.predecessors(id)) & added:
# task has predecessors that are listed as open
# add to the list so that its parents don't get added either
added.add(id)
continue
yield tasks[id]
added.add(id)
def list_open_tasks(self, parent=None, source=None):
'''List tasks
@param parent: the parent task (as returned by this method) or C{None} to list
all top level tasks
@returns: a list of tasks at this level as sqlite Row objects
'''
if parent:
parentid = parent['id']
else:
parentid = 0
if source:
today = str(datetime.date.today())
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.parent=? and pages.name=? and tasklist.start<=?
ORDER BY tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (parentid, source, today)):
yield row
else:
# Sort:
# started tasks by prio, due date, page + id to keep order in page
# not-started tasks by start date, ...
today = str(datetime.date.today())
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.parent=? and tasklist.start<=?
ORDER BY tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (parentid, today)):
yield row
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.parent=? and tasklist.start>?
ORDER BY tasklist.start ASC, tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (parentid, today)):
yield row
def list_open_tasks_flatlist(self):
'''List tasks
@returns: a list of tasks as sqlite Row objects
'''
# Sort:
# started tasks by prio, due date, page + id to keep order in page
# not-started tasks by start date, ...
today = str(datetime.date.today())
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.start<=? and hasopenchildren=0
ORDER BY tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (today, )):
yield row
for row in self.db.execute(
'''
SELECT tasklist.* FROM tasklist
LEFT JOIN pages ON tasklist.source = pages.id
WHERE tasklist.open=1 and tasklist.start>? and hasopenchildren=0
ORDER BY tasklist.start ASC, tasklist.prio DESC, tasklist.due ASC, pages.name ASC, tasklist.id ASC
''', (today, )):
yield row
def get_task(self, taskid):
row = self.db.execute('SELECT * FROM tasklist WHERE id=?',
(taskid, )).fetchone()
return row
def get_path(self, task):
'''Get the L{Path} for the source of a task
@param task: the task (as returned by L{list_tasks()}
@returns: an L{IndexPath} object
'''
return self._pages.get_pagename(task['source'])
