diff --git a/beat/backend/python/database.py b/beat/backend/python/database.py
index c8104406230411a384172d69e646cb65f68dbc65..c6d2fa76b43fd1aa8b730f2d6e362126a70ff047 100644
--- a/beat/backend/python/database.py
+++ b/beat/backend/python/database.py
@@ -392,6 +392,12 @@ class Database(object):
return not bool(self.errors)
+ @property
+ def environment(self):
+ """Returns the run environment if any has been set"""
+
+ return self.data.get("environment")
+
@property
def protocols(self):
"""The declaration of all the protocols of the database"""
diff --git a/beat/backend/python/test/prefix/databases/integers_db_env/1.json b/beat/backend/python/test/prefix/databases/integers_db_env/1.json
new file mode 100644
index 0000000000000000000000000000000000000000..71a4ad1b84ce7a9bbb6186a07d7cb6e3755959f7
--- /dev/null
+++ b/beat/backend/python/test/prefix/databases/integers_db_env/1.json
@@ -0,0 +1,99 @@
+{
+ "root_folder": "/tmp/path/not/set",
+ "environment": {
+ "name": "Example databases",
+ "version": "1.4.0"
+ },
+ "protocols": [
+ {
+ "name": "double",
+ "template": "double",
+ "sets": [
+ {
+ "name": "double",
+ "template": "double",
+ "view": "Double",
+ "outputs": {
+ "a": "user/single_integer/1",
+ "b": "user/single_integer/1",
+ "sum": "user/single_integer/1"
+ }
+ }
+ ]
+ },
+ {
+ "name": "triple",
+ "template": "triple",
+ "sets": [
+ {
+ "name": "triple",
+ "view": "Triple",
+ "template": "triple",
+ "outputs": {
+ "a": "user/single_integer/1",
+ "b": "user/single_integer/1",
+ "c": "user/single_integer/1",
+ "sum": "user/single_integer/1"
+ }
+ }
+ ]
+ },
+ {
+ "name": "two_sets",
+ "template": "two_sets",
+ "sets": [
+ {
+ "name": "double",
+ "template": "double",
+ "view": "Double",
+ "outputs": {
+ "a": "user/single_integer/1",
+ "b": "user/single_integer/1",
+ "sum": "user/single_integer/1"
+ }
+ },
+ {
+ "name": "triple",
+ "template": "triple",
+ "view": "Triple",
+ "outputs": {
+ "a": "user/single_integer/1",
+ "b": "user/single_integer/1",
+ "c": "user/single_integer/1",
+ "sum": "user/single_integer/1"
+ }
+ }
+ ]
+ },
+ {
+ "name": "labelled",
+ "template": "labelled",
+ "sets": [
+ {
+ "name": "labelled",
+ "template": "labelled",
+ "view": "Labelled",
+ "outputs": {
+ "value": "user/single_integer/1",
+ "label": "user/single_string/1"
+ }
+ }
+ ]
+ },
+ {
+ "name": "different_frequencies",
+ "template": "different_frequencies",
+ "sets": [
+ {
+ "name": "double",
+ "template": "double",
+ "view": "DifferentFrequencies",
+ "outputs": {
+ "a": "user/single_integer/1",
+ "b": "user/single_integer/1"
+ }
+ }
+ ]
+ }
+ ]
+}
diff --git a/beat/backend/python/test/prefix/databases/integers_db_env/1.py b/beat/backend/python/test/prefix/databases/integers_db_env/1.py
new file mode 100755
index 0000000000000000000000000000000000000000..0ebebd6c4debec559f8a853830073e92a8b71bd5
--- /dev/null
+++ b/beat/backend/python/test/prefix/databases/integers_db_env/1.py
@@ -0,0 +1,168 @@
+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+# #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/ #
+# Contact: beat.support@idiap.ch #
+# #
+# Redistribution and use in source and binary forms, with or without #
+# modification, are permitted provided that the following conditions are met: #
+# #
+# 1. Redistributions of source code must retain the above copyright notice, this #
+# list of conditions and the following disclaimer. #
+# #
+# 2. Redistributions in binary form must reproduce the above copyright notice, #
+# this list of conditions and the following disclaimer in the documentation #
+# and/or other materials provided with the distribution. #
+# #
+# 3. Neither the name of the copyright holder nor the names of its contributors #
+# may be used to endorse or promote products derived from this software without #
+# specific prior written permission. #
+# #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #
+# #
+###################################################################################
+
+
+import numpy
+from collections import namedtuple
+from beat.backend.python.database import View
+
+
+class Double(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["a", "b", "sum"])
+
+ return [
+ Entry(1, 10, 11),
+ Entry(2, 20, 22),
+ Entry(3, 30, 33),
+ Entry(4, 40, 44),
+ Entry(5, 50, 55),
+ Entry(6, 60, 66),
+ Entry(7, 70, 77),
+ Entry(8, 80, 88),
+ Entry(9, 90, 99),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "a":
+ return {"value": numpy.int32(obj.a)}
+
+ elif output == "b":
+ return {"value": numpy.int32(obj.b)}
+
+ elif output == "sum":
+ return {"value": numpy.int32(obj.sum)}
+ elif output == "class":
+ return {"value": numpy.int32(obj.cls)}
+
+
+# ----------------------------------------------------------
+
+
+class Triple(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["a", "b", "c", "sum"])
+
+ return [
+ Entry(1, 10, 100, 111),
+ Entry(2, 20, 200, 222),
+ Entry(3, 30, 300, 333),
+ Entry(4, 40, 400, 444),
+ Entry(5, 50, 500, 555),
+ Entry(6, 60, 600, 666),
+ Entry(7, 70, 700, 777),
+ Entry(8, 80, 800, 888),
+ Entry(9, 90, 900, 999),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "a":
+ return {"value": numpy.int32(obj.a)}
+
+ elif output == "b":
+ return {"value": numpy.int32(obj.b)}
+
+ elif output == "c":
+ return {"value": numpy.int32(obj.c)}
+
+ elif output == "sum":
+ return {"value": numpy.int32(obj.sum)}
+
+
+# ----------------------------------------------------------
+
+
+class Labelled(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["label", "value"])
+
+ return [
+ Entry("A", 1),
+ Entry("A", 2),
+ Entry("A", 3),
+ Entry("A", 4),
+ Entry("A", 5),
+ Entry("B", 10),
+ Entry("B", 20),
+ Entry("B", 30),
+ Entry("B", 40),
+ Entry("B", 50),
+ Entry("C", 100),
+ Entry("C", 200),
+ Entry("C", 300),
+ Entry("C", 400),
+ Entry("C", 500),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "label":
+ return {"value": obj.label}
+
+ elif output == "value":
+ return {"value": numpy.int32(obj.value)}
+
+
+# ----------------------------------------------------------
+
+
+class DifferentFrequencies(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["a", "b"])
+
+ return [
+ Entry(1, 10),
+ Entry(1, 20),
+ Entry(1, 30),
+ Entry(1, 40),
+ Entry(2, 50),
+ Entry(2, 60),
+ Entry(2, 70),
+ Entry(2, 80),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "a":
+ return {"value": numpy.int32(obj.a)}
+
+ elif output == "b":
+ return {"value": numpy.int32(obj.b)}
diff --git a/beat/backend/python/test/prefix/databases/integers_db_env/2.json b/beat/backend/python/test/prefix/databases/integers_db_env/2.json
new file mode 100644
index 0000000000000000000000000000000000000000..636da24bf0f79fcdb0c7a4fe333356152fa6809f
--- /dev/null
+++ b/beat/backend/python/test/prefix/databases/integers_db_env/2.json
@@ -0,0 +1,58 @@
+{
+ "schema_version": 2,
+ "environment": {
+ "name": "Example databases",
+ "version": "1.4.0"
+ },
+ "root_folder": "/tmp/path/not/set",
+ "protocols": [
+ {
+ "name": "double",
+ "template": "double/1",
+ "views": {
+ "double": {
+ "view": "Double"
+ }
+ }
+ },
+ {
+ "name": "triple",
+ "template": "triple/1",
+ "views": {
+ "triple": {
+ "view": "Triple"
+ }
+ }
+ },
+ {
+ "name": "two_sets",
+ "template": "two_sets/1",
+ "views": {
+ "double": {
+ "view": "Double"
+ },
+ "triple": {
+ "view": "Triple"
+ }
+ }
+ },
+ {
+ "name": "labelled",
+ "template": "labelled/1",
+ "views": {
+ "labelled": {
+ "view": "Labelled"
+ }
+ }
+ },
+ {
+ "name": "different_frequencies",
+ "template": "different_frequencies/1",
+ "views": {
+ "double" : {
+ "view": "DifferentFrequencies"
+ }
+ }
+ }
+ ]
+}
diff --git a/beat/backend/python/test/prefix/databases/integers_db_env/2.py b/beat/backend/python/test/prefix/databases/integers_db_env/2.py
new file mode 100644
index 0000000000000000000000000000000000000000..0ebebd6c4debec559f8a853830073e92a8b71bd5
--- /dev/null
+++ b/beat/backend/python/test/prefix/databases/integers_db_env/2.py
@@ -0,0 +1,168 @@
+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+# #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/ #
+# Contact: beat.support@idiap.ch #
+# #
+# Redistribution and use in source and binary forms, with or without #
+# modification, are permitted provided that the following conditions are met: #
+# #
+# 1. Redistributions of source code must retain the above copyright notice, this #
+# list of conditions and the following disclaimer. #
+# #
+# 2. Redistributions in binary form must reproduce the above copyright notice, #
+# this list of conditions and the following disclaimer in the documentation #
+# and/or other materials provided with the distribution. #
+# #
+# 3. Neither the name of the copyright holder nor the names of its contributors #
+# may be used to endorse or promote products derived from this software without #
+# specific prior written permission. #
+# #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #
+# #
+###################################################################################
+
+
+import numpy
+from collections import namedtuple
+from beat.backend.python.database import View
+
+
+class Double(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["a", "b", "sum"])
+
+ return [
+ Entry(1, 10, 11),
+ Entry(2, 20, 22),
+ Entry(3, 30, 33),
+ Entry(4, 40, 44),
+ Entry(5, 50, 55),
+ Entry(6, 60, 66),
+ Entry(7, 70, 77),
+ Entry(8, 80, 88),
+ Entry(9, 90, 99),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "a":
+ return {"value": numpy.int32(obj.a)}
+
+ elif output == "b":
+ return {"value": numpy.int32(obj.b)}
+
+ elif output == "sum":
+ return {"value": numpy.int32(obj.sum)}
+ elif output == "class":
+ return {"value": numpy.int32(obj.cls)}
+
+
+# ----------------------------------------------------------
+
+
+class Triple(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["a", "b", "c", "sum"])
+
+ return [
+ Entry(1, 10, 100, 111),
+ Entry(2, 20, 200, 222),
+ Entry(3, 30, 300, 333),
+ Entry(4, 40, 400, 444),
+ Entry(5, 50, 500, 555),
+ Entry(6, 60, 600, 666),
+ Entry(7, 70, 700, 777),
+ Entry(8, 80, 800, 888),
+ Entry(9, 90, 900, 999),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "a":
+ return {"value": numpy.int32(obj.a)}
+
+ elif output == "b":
+ return {"value": numpy.int32(obj.b)}
+
+ elif output == "c":
+ return {"value": numpy.int32(obj.c)}
+
+ elif output == "sum":
+ return {"value": numpy.int32(obj.sum)}
+
+
+# ----------------------------------------------------------
+
+
+class Labelled(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["label", "value"])
+
+ return [
+ Entry("A", 1),
+ Entry("A", 2),
+ Entry("A", 3),
+ Entry("A", 4),
+ Entry("A", 5),
+ Entry("B", 10),
+ Entry("B", 20),
+ Entry("B", 30),
+ Entry("B", 40),
+ Entry("B", 50),
+ Entry("C", 100),
+ Entry("C", 200),
+ Entry("C", 300),
+ Entry("C", 400),
+ Entry("C", 500),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "label":
+ return {"value": obj.label}
+
+ elif output == "value":
+ return {"value": numpy.int32(obj.value)}
+
+
+# ----------------------------------------------------------
+
+
+class DifferentFrequencies(View):
+ def index(self, root_folder, parameters):
+ Entry = namedtuple("Entry", ["a", "b"])
+
+ return [
+ Entry(1, 10),
+ Entry(1, 20),
+ Entry(1, 30),
+ Entry(1, 40),
+ Entry(2, 50),
+ Entry(2, 60),
+ Entry(2, 70),
+ Entry(2, 80),
+ ]
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == "a":
+ return {"value": numpy.int32(obj.a)}
+
+ elif output == "b":
+ return {"value": numpy.int32(obj.b)}
diff --git a/beat/backend/python/test/test_database.py b/beat/backend/python/test/test_database.py
index 3b68145b78de1da15c63eff41cd444a87032ea2d..7720fce7a68b4c60d91cb5e13c1d5c72a8744df2 100644
--- a/beat/backend/python/test/test_database.py
+++ b/beat/backend/python/test/test_database.py
@@ -161,3 +161,23 @@ def test_duplicate_key_error():
database = Database(prefix, "duplicate_key_error/1")
nose.tools.assert_false(database.valid)
nose.tools.assert_true("Database declaration file invalid" in database.errors[0])
+
+
+# ----------------------------------------------------------
+
+REFERENCE_ENVIRONMENT = {"name": "Example databases", "version": "1.4.0"}
+
+
+def test_envionment_requirement():
+ for db_name in INTEGERS_DBS:
+ yield compare_environment, db_name, None
+
+ for index in range(1, 3):
+ yield compare_environment, "integers_db_env/{}".format(
+ index
+ ), REFERENCE_ENVIRONMENT
+
+
+def compare_environment(db_name, environment):
+ db = load(db_name)
+ nose.tools.assert_equal(db.environment, environment)