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extending support for queryset.sum and queryset.average methods

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Wilson Júnior
2013-07-05 10:36:11 -03:00
parent 8d21e5f3c1
commit 592c654916
2 changed files with 181 additions and 10 deletions
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51
mongoengine/queryset/queryset.py
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@@ -1066,11 +1066,27 @@ class QuerySet(object):
.. versionchanged:: 0.5 - updated to map_reduce as db.eval doesnt work
with sharding.
"""
map_func = Code("""
map_func = """
function() {
emit(1, this[field] || 0);
var path = '{{~%(field)s}}'.split('.'),
field = this;
for (p in path) {
if (typeof field != 'undefined')
field = field[path[p]];
else
break;
}
if (field && field.constructor == Array) {
field.forEach(function(item) {
emit(1, item||0);
});
} else if (typeof field != 'undefined') {
emit(1, field||0);
}
}
""", scope={'field': field})
""" % dict(field=field)
reduce_func = Code("""
function(key, values) {
@@ -1096,13 +1112,28 @@ class QuerySet(object):
.. versionchanged:: 0.5 - updated to map_reduce as db.eval doesnt work
with sharding.
"""
map_func = Code("""
map_func = """
function() {
if (this.hasOwnProperty(field))
emit(1, {t: this[field] || 0, c: 1});
}
""", scope={'field': field})
var path = '{{~%(field)s}}'.split('.'),
field = this;
for (p in path) {
if (typeof field != 'undefined')
field = field[path[p]];
else
break;
}
if (field && field.constructor == Array) {
field.forEach(function(item) {
emit(1, {t: item||0, c: 1});
});
} else if (typeof field != 'undefined') {
emit(1, {t: field||0, c: 1});
}
}
""" % dict(field=field)
reduce_func = Code("""
function(key, values) {
var out = {t: 0, c: 0};
@@ -1263,8 +1294,8 @@ class QuerySet(object):
def _item_frequencies_map_reduce(self, field, normalize=False):
map_func = """
function() {
var path = '{{~%(field)s}}'.split('.');
var field = this;
var path = '{{~%(field)s}}'.split('.'),
field = this;
for (p in path) {
if (typeof field != 'undefined')