| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You 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. |
| |
| from collections import OrderedDict |
| |
| from pyignite import Client, GenericObjectMeta |
| from pyignite.datatypes import DoubleObject, IntObject, String |
| from pyignite.datatypes.prop_codes import PROP_NAME, PROP_SQL_SCHEMA, PROP_QUERY_ENTITIES |
| |
| client = Client() |
| with client.connect('127.0.0.1', 10800): |
| student_cache = client.create_cache({ |
| PROP_NAME: 'SQL_PUBLIC_STUDENT', |
| PROP_SQL_SCHEMA: 'PUBLIC', |
| PROP_QUERY_ENTITIES: [ |
| { |
| 'table_name': 'Student'.upper(), |
| 'key_field_name': 'SID', |
| 'key_type_name': 'java.lang.Integer', |
| 'field_name_aliases': [], |
| 'query_fields': [ |
| { |
| 'name': 'SID', |
| 'type_name': 'java.lang.Integer', |
| 'is_key_field': True, |
| 'is_notnull_constraint_field': True, |
| }, |
| { |
| 'name': 'NAME', |
| 'type_name': 'java.lang.String', |
| }, |
| { |
| 'name': 'LOGIN', |
| 'type_name': 'java.lang.String', |
| }, |
| { |
| 'name': 'AGE', |
| 'type_name': 'java.lang.Integer', |
| }, |
| { |
| 'name': 'GPA', |
| 'type_name': 'java.math.Double', |
| }, |
| ], |
| 'query_indexes': [], |
| 'value_type_name': 'SQL_PUBLIC_STUDENT_TYPE', |
| 'value_field_name': None, |
| }, |
| ], |
| }) |
| |
| class Student( |
| metaclass=GenericObjectMeta, |
| type_name='SQL_PUBLIC_STUDENT_TYPE', |
| schema=OrderedDict([ |
| ('NAME', String), |
| ('LOGIN', String), |
| ('AGE', IntObject), |
| ('GPA', DoubleObject), |
| ]) |
| ): |
| pass |
| |
| student_cache.put( |
| 1, |
| Student(LOGIN='jdoe', NAME='John Doe', AGE=17, GPA=4.25), |
| key_hint=IntObject |
| ) |
| |
| with client.sql(r'SELECT * FROM Student', include_field_names=True) as cursor: |
| print(next(cursor)) |
| # ['SID', 'NAME', 'LOGIN', 'AGE', 'GPA'] |
| |
| print(*cursor) |
| # [1, 'John Doe', 'jdoe', 17, 4.25] |
| |
| # DROP_QUERY = 'DROP TABLE Student' |
| # client.sql(DROP_QUERY) |
| # |
| # pyignite.exceptions.SQLError: class org.apache.ignite.IgniteCheckedException: |
| # Only cache created with CREATE TABLE may be removed with DROP TABLE |
| # [cacheName=SQL_PUBLIC_STUDENT] |
| |
| student_cache.destroy() |