1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
# Copyright DataStax, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
from cassandra.metadata import (
KeyspaceMetadata, TableMetadataDSE68,
VertexMetadata, EdgeMetadata
)
class GraphMetadataToCQLTests(unittest.TestCase):
def _create_edge_metadata(self, partition_keys=['pk1'], clustering_keys=['c1']):
return EdgeMetadata(
'keyspace', 'table', 'label', 'from_table', 'from_label',
partition_keys, clustering_keys, 'to_table', 'to_label',
partition_keys, clustering_keys)
def _create_vertex_metadata(self, label_name='label'):
return VertexMetadata('keyspace', 'table', label_name)
def _create_keyspace_metadata(self, graph_engine):
return KeyspaceMetadata(
'keyspace', True, 'org.apache.cassandra.locator.SimpleStrategy',
{'replication_factor': 1}, graph_engine=graph_engine)
def _create_table_metadata(self, with_vertex=False, with_edge=False):
tm = TableMetadataDSE68('keyspace', 'table')
if with_vertex:
tm.vertex = self._create_vertex_metadata() if with_vertex is True else with_vertex
elif with_edge:
tm.edge = self._create_edge_metadata() if with_edge is True else with_edge
return tm
def test_keyspace_no_graph_engine(self):
km = self._create_keyspace_metadata(None)
self.assertEqual(km.graph_engine, None)
self.assertNotIn(
"graph_engine",
km.as_cql_query()
)
def test_keyspace_with_graph_engine(self):
graph_engine = 'Core'
km = self._create_keyspace_metadata(graph_engine)
self.assertEqual(km.graph_engine, graph_engine)
cql = km.as_cql_query()
self.assertIn(
"graph_engine",
cql
)
self.assertIn(
"Core",
cql
)
def test_table_no_vertex_or_edge(self):
tm = self._create_table_metadata()
self.assertIsNone(tm.vertex)
self.assertIsNone(tm.edge)
cql = tm.as_cql_query()
self.assertNotIn("VERTEX LABEL", cql)
self.assertNotIn("EDGE LABEL", cql)
def test_table_with_vertex(self):
tm = self._create_table_metadata(with_vertex=True)
self.assertIsInstance(tm.vertex, VertexMetadata)
self.assertIsNone(tm.edge)
cql = tm.as_cql_query()
self.assertIn("VERTEX LABEL", cql)
self.assertNotIn("EDGE LABEL", cql)
def test_table_with_edge(self):
tm = self._create_table_metadata(with_edge=True)
self.assertIsNone(tm.vertex)
self.assertIsInstance(tm.edge, EdgeMetadata)
cql = tm.as_cql_query()
self.assertNotIn("VERTEX LABEL", cql)
self.assertIn("EDGE LABEL", cql)
self.assertIn("FROM from_label", cql)
self.assertIn("TO to_label", cql)
def test_vertex_with_label(self):
tm = self. _create_table_metadata(with_vertex=True)
self.assertTrue(tm.as_cql_query().endswith('VERTEX LABEL label'))
def test_edge_single_partition_key_and_clustering_key(self):
tm = self._create_table_metadata(with_edge=True)
self.assertIn(
'FROM from_label(pk1, c1)',
tm.as_cql_query()
)
def test_edge_multiple_partition_keys(self):
edge = self._create_edge_metadata(partition_keys=['pk1', 'pk2'])
tm = self. _create_table_metadata(with_edge=edge)
self.assertIn(
'FROM from_label((pk1, pk2), ',
tm.as_cql_query()
)
def test_edge_no_clustering_keys(self):
edge = self._create_edge_metadata(clustering_keys=[])
tm = self. _create_table_metadata(with_edge=edge)
self.assertIn(
'FROM from_label(pk1) ',
tm.as_cql_query()
)
def test_edge_multiple_clustering_keys(self):
edge = self._create_edge_metadata(clustering_keys=['c1', 'c2'])
tm = self. _create_table_metadata(with_edge=edge)
self.assertIn(
'FROM from_label(pk1, c1, c2) ',
tm.as_cql_query()
)
def test_edge_multiple_partition_and_clustering_keys(self):
edge = self._create_edge_metadata(partition_keys=['pk1', 'pk2'],
clustering_keys=['c1', 'c2'])
tm = self. _create_table_metadata(with_edge=edge)
self.assertIn(
'FROM from_label((pk1, pk2), c1, c2) ',
tm.as_cql_query()
)
|
