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sync_query.py
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45 lines (37 loc) · 1.77 KB
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#
# Copyright (c) 2011-2014 Exxeleron GmbH
#
# 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.
#
from qpython import qconnection
if __name__ == '__main__':
# create connection object
q = qconnection.QConnection(host='localhost', port=5000)
# initialize connection
q.open()
print(q)
print('IPC version: %s. Is connected: %s' % (q.protocol_version, q.is_connected()))
# simple query execution via: QConnection.__call__
data = q('{`int$ til x}', 10)
print('type: %s, numpy.dtype: %s, meta.qtype: %s, data: %s ' % (type(data), data.dtype, data.meta.qtype, data))
# simple query execution via: QConnection.sync
data = q.sync('{`long$ til x}', 10)
print('type: %s, numpy.dtype: %s, meta.qtype: %s, data: %s ' % (type(data), data.dtype, data.meta.qtype, data))
# low-level query and read
q.query(qconnection.MessageType.SYNC, '{`short$ til x}', 10) # sends a SYNC query
msg = q.receive(data_only=False, raw=False) # retrieve entire message
print('type: %s, message type: %s, data size: %s, is_compressed: %s ' % (type(msg), msg.type, msg.size, msg.is_compressed))
data = msg.data
print('type: %s, numpy.dtype: %s, meta.qtype: %s, data: %s ' % (type(data), data.dtype, data.meta.qtype, data))
# close connection
q.close()