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Create Query class

This commit is contained in:
Jean-Romain Garnier 2020-02-18 14:29:47 +01:00
parent 7ba5ff8be6
commit e36a7c7f1f

View file

@ -51,6 +51,25 @@ from re2o.base import SortTable, re2o_paginator
from re2o.acl import can_view_all from re2o.acl import can_view_all
class Query:
def __init__(self, text=""):
self.text = text # Content of the query
self.operator = None # Whether a special char (ex "+") was used
self.subqueries = None # When splitting the query in subparts (ex when using "+")
def add_char(self, char):
self.text += char
def add_operator(self, operator):
self.operator = operator
if self.subqueries is None:
self.subqueries = []
self.subqueries.append(Query(self.text))
self.text = ""
def is_int(variable): def is_int(variable):
""" Check if the variable can be casted to an integer """ """ Check if the variable can be casted to an integer """
@ -69,7 +88,7 @@ def filter_fields():
def empty_filters(): def empty_filters():
"""Build empty filters used by Django""" """Build empty filters used by Django"""
filters = [Q() for f in filter_fields()] return {f: Q() for f in filter_fields()}
def finish_results(request, results, col, order): def finish_results(request, results, col, order):
@ -77,10 +96,12 @@ def finish_results(request, results, col, order):
number of max results. Finally add the info of the nmax number of results number of max results. Finally add the info of the nmax number of results
to the dict""" to the dict"""
results["users"] += results["clubs"]
results["users"] = SortTable.sort( results["users"] = SortTable.sort(
results["users"], col, order, SortTable.USERS_INDEX results["users"], col, order, SortTable.USERS_INDEX
) )
results["clubs"] = SortTable.sort(
results["clubs"], col, order, SortTable.USERS_INDEX
)
results["machines"] = SortTable.sort( results["machines"] = SortTable.sort(
results["machines"], col, order, SortTable.MACHINES_INDEX results["machines"], col, order, SortTable.MACHINES_INDEX
) )
@ -129,6 +150,8 @@ def search_single_word(word, filters, user, start, end, user_state, aff):
| Q(room__name__icontains=word) | Q(room__name__icontains=word)
| Q(email__icontains=word) | Q(email__icontains=word)
| Q(telephone__icontains=word) | Q(telephone__icontains=word)
| Q(room__name__icontains=word)
| Q(room__building__name__icontains=word)
) )
filter_users = (filter_clubs | Q(name__icontains=word)) filter_users = (filter_clubs | Q(name__icontains=word))
@ -213,8 +236,9 @@ def search_single_word(word, filters, user, start, end, user_state, aff):
# Rooms # Rooms
if "5" in aff and Room.can_view_all(user): if "5" in aff and Room.can_view_all(user):
filter_rooms = ( filter_rooms = (
Q(details__icontains=word) | Q(name__icontains=word) | Q(port__details=word) Q(details__icontains=word) | Q(name__icontains=word) | Q(port__details=word) | Q(building__name__icontains=building)
) )
filter_rooms |= (Q(name__icontains=room) & Q(building__name__icontains=building))
filters["rooms"] |= filter_rooms filters["rooms"] |= filter_rooms
@ -307,22 +331,25 @@ def apply_filters(filters, user, aff):
def search_single_query(query, filters, user, start, end, user_state, aff): def search_single_query(query, filters, user, start, end, user_state, aff):
""" Handle different queries an construct the correct filters using """ Handle different queries an construct the correct filters using
search_single_word""" search_single_word"""
if query["operator"] == "+": if query.operator == "+":
# Special queries with "+" operators should use & rather than | # Special queries with "+" operators should use & rather than |
for q in query["subqueries"]: newfilters = empty_filters()
for q in query.subqueries:
# Construct an independent filter for each subquery # Construct an independent filter for each subquery
subfilters = empty_filters() subfilters = search_single_query(q, empty_filters(), user, start, end, user_state, aff)
subfilters = search_single_word(q, subfilters, user, start, end, user_state, aff)
# Apply the new filter # Apply the subfilter
for field in filter_fields(): for field in filter_fields():
filters[field] &= subfilters[field] newfilters[field] &= subfilters[field]
# Add these filters to the existing ones
for field in filter_fields():
filters[field] |= newfilters[field]
return filters return filters
# Handle standard queries # Handle standard queries
q = query["text"] return search_single_word(query.text, filters, user, start, end, user_state, aff)
return search_single_word(q, filters, user, start, end, user_state, aff)
def create_queries(query): def create_queries(query):
@ -338,12 +365,6 @@ def create_queries(query):
""" """
# A dict representing the different queries extracted from the user's text # A dict representing the different queries extracted from the user's text
queries = [] queries = []
# Format: {
# "text": "", # Content of the query
# "operator": None, # Whether a special char ("+") was used
# "subqueries": None # When splitting the query in subparts (ex when using "+")
# }
current_query = None current_query = None
# Whether the query is between " # Whether the query is between "
@ -355,12 +376,12 @@ def create_queries(query):
for char in query: for char in query:
if current_query is None: if current_query is None:
# We are starting a new word # We are starting a new word
current_query = { "text": "", "operator": None, "subqueries": None } current_query = Query()
if escaping_char: if escaping_char:
# The last char war a \ so we escape this char # The last char war a \ so we escape this char
escaping_char = False escaping_char = False
current_query["text"] += char current_query.add_char(char)
continue continue
if char == "\\": if char == "\\":
@ -375,36 +396,28 @@ def create_queries(query):
if keep_intact: if keep_intact:
# If we are between two ", ignore separators # If we are between two ", ignore separators
current_query["text"] += char current_query.add_char(char)
continue continue
if char == "+": if char == "+":
# Can't sart a query with a "+", consider it escaped if len(current_query.text) == 0:
if len(current_query["text"]) == 0: # Can't sart a query with a "+", consider it escaped
current_query["text"] = char current_query.add_char(char)
continue continue
# Build a slightly more complicate data structure current_query.add_operator("+")
# This is need for queries like '"A B"+C'
if current_query["operator"] is None:
current_query["operator"] = "+"
current_query["subqueries"] = []
current_query["subqueries"].append(current_query["text"])
current_query["text"] = ""
continue continue
if char == " " or char == ",": if char == " " or char == ",":
# If we encouter a separator outside of ", we create a new word # If we encouter a separator outside of ", we create a new word
if len(current_query["text"]) == 0: if len(current_query.text) == 0:
# Discard empty queries # Discard empty queries
continue continue
if current_query["operator"] is not None: if current_query.operator is not None:
# If we were building a special structure, finish building it # If we were building a special structure, finish building it
current_query["subqueries"].append(current_query["text"]) current_query.add_operator(current_query.operator)
current_query["text"] = ""
# Save the query and start a new one # Save the query and start a new one
queries.append(current_query) queries.append(current_query)
@ -412,7 +425,17 @@ def create_queries(query):
continue continue
# If we haven't encountered any special case, add the char to the word # If we haven't encountered any special case, add the char to the word
current_query["text"].append(char) current_query.add_char(char)
# Save the current working query if necessary
if current_query is not None:
if current_query.operator is not None:
# There was an operator supposed to split multiple words
if len(current_query.text) > 0:
# Finish the current search
current_query.add_operator(current_query.operator)
queries.append(current_query)
return queries return queries
@ -431,9 +454,9 @@ def get_results(query, request, params):
filters = empty_filters() filters = empty_filters()
queries = create_queries(query) queries = create_queries(query)
for query in queries: for q in queries:
filters = search_single_query( filters = search_single_query(
query, filters, request.user, start, end, user_state, aff q, filters, request.user, start, end, user_state, aff
) )
results = apply_filters(filters, request.user, aff) results = apply_filters(filters, request.user, aff)