github-actions[bot] opened a new issue, #440:
URL: https://github.com/apache/incubator-wayang/issues/440
create reduce by
.reduce_by(reducer) \
.flatmap(lambda elem: elem.split("|"))
.map(lambda elem: (elem, elem.split("|"))) \
L_RETURNFLAG 8
L_LINESTATUS 9
L_QUANTITY 4
L_EXTENDEDPRICE 5
discount 6
tax 7
https://github.com/apache/incubator-wayang/blob/c25c6561bf786d76d0dc717b28cf15885c269232/python/old_code/pywayang/src/pywy/orchestrator/execdirectly.py#L114
```python
#
# 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 pywy.orchestrator.plan import Descriptor
from pywy.orchestrator.dataquanta import DataQuantaBuilder
import datetime
# Returns the Sink Executable Dataquanta of a DEMO plan
def plan_sort(descriptor):
plan = DataQuantaBuilder(descriptor)
sink_dataquanta = \
plan.source("../test/words.txt") \
.sort(lambda elem: elem.lower()) \
.sink("../test/output.txt", end="")
return sink_dataquanta
# Returns the Sink Executable Dataquanta of a DEMO plan
def plan_sort_filter(descriptor):
plan = DataQuantaBuilder(descriptor)
sink_dataquanta = \
plan.source("../test/words.txt") \
.sort(lambda elem: elem.lower()) \
.filter(lambda elem: str(elem).startswith("f")) \
.sink("../test/output.txt", end="")
return sink_dataquanta
# Returns the Sink Executable Dataquanta of a DEMO plan
def plan_filter_text(descriptor):
plan = DataQuantaBuilder(descriptor)
sink_dataquanta = \
plan.source("../test/words.txt") \
.filter(lambda elem: str(elem).startswith("f")) \
.sink("../test/output.txt", end="")
return sink_dataquanta
# Returns the Sink Executable Dataquanta of a DEMO plan
def plan_filter(descriptor):
plan = DataQuantaBuilder(descriptor)
sink_dataquanta = \
plan.source("../test/numbers.txt") \
.filter(lambda elem: int(elem) % 2 != 0) \
.sink("../test/output.txt", end="")
return sink_dataquanta
# Returns the Sink Executable Dataquanta of a DEMO plan
def plan_basic(descriptor):
plan = DataQuantaBuilder(descriptor)
sink_dataquanta = \
plan.source("../test/lines.txt") \
.sink("../test/output.txt", end="")
return sink_dataquanta
# Returns the Sink Executable Dataquanta of a DEMO plan
def plan_junction(descriptor):
plan = DataQuantaBuilder(descriptor)
dq_source_a = plan.source("../test/lines.txt")
dq_source_b = plan.source("../test/morelines.txt") \
.filter(lambda elem: str(elem).startswith("I"))
dq_source_c = plan.source("../test/lastlines.txt") \
.filter(lambda elem: str(elem).startswith("W"))
sink_dataquanta = dq_source_a.union(dq_source_b) \
.union(dq_source_c) \
.sort(lambda elem: elem.lower()) \
.sink("../test/output.txt", end="")
return sink_dataquanta
def plan_java_junction(descriptor):
plan = DataQuantaBuilder(descriptor)
dq_source_a = plan.source("../test/lines.txt")
dq_source_b = plan.source("../test/morelines.txt")
sink_dataquanta = dq_source_a.union(dq_source_b) \
.filter(lambda elem: str(elem).startswith("I")) \
.sort(lambda elem: elem.lower()) \
.sink("../test/output.txt", end="")
return sink_dataquanta
def plan_tpch_q1(descriptor):
#TODO create reduce by
plan = DataQuantaBuilder(descriptor)
def reducer(obj1, obj2):
return obj1[0]
sink = plan.source("../test/lineitem.txt") \
.map(lambda elem: elem.split("|")) \
.filter(lambda elem: datetime.datetime.strptime(elem[10],
'%Y-%m-%d') <= datetime.datetime.strptime("1998-09-02", '%Y-%m-%d')) \
.map(lambda elem:
[elem[8], elem[9], elem[4], elem[5],
float(elem[5]) * (1 - float(elem[6])),
float(elem[5]) * (1 - float(elem[6])) * (1 + float(elem[7])),
elem[4], elem[5],
elem[6], 1]) \
.sink("../test/output.txt", end="")
# .group_by(lambda elem: elem) \
# .reduce_by(reducer) \
# .flatmap(lambda elem: elem.split("|"))
# .map(lambda elem: (elem, elem.split("|"))) \
# L_RETURNFLAG 8
# L_LINESTATUS 9
# L_QUANTITY 4
# L_EXTENDEDPRICE 5
# discount 6
# tax 7
return dq_source_b
def plan_full_java(descriptor):
plan = DataQuantaBuilder(descriptor)
dq_source_a = plan.source("../test/lines.txt")
dq_source_b = plan.source("../test/morelines.txt")
sink_dataquanta = dq_source_a.union(dq_source_b) \
.sink("../test/output.txt", end="")
return sink_dataquanta
if __name__ == '__main__':
# Plan will contain general info about the Wayang Plan created here
descriptor = Descriptor()
plan_dataquanta_sink = plan_tpch_q1(descriptor)
plan_dataquanta_sink.execute()
```
06296b40237c1727ab4da714fdb181df2e2932ae
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