/*
* 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.
*/
package org.apache.flink.test.recordJobs.relational.query9Util;
import org.apache.flink.api.java.record.functions.JoinFunction;
import org.apache.flink.test.recordJobs.util.Tuple;
import org.apache.flink.types.IntValue;
import org.apache.flink.types.Record;
import org.apache.flink.util.Collector;
@SuppressWarnings("serial")
public class OrderedPartsJoin extends JoinFunction {
/**
* Join "orders" and "lineitem" by "orderkey".
*
* Output Schema:
* Key: (partkey, suppkey)
* Value: (year, quantity, price)
*
*/
@Override
public void join(Record value1, Record value2, Collector<Record> out)
throws Exception {
IntValue year = value1.getField(1, IntValue.class);
Tuple lineItem = value2.getField(1, Tuple.class);
/* (partkey, suppkey) from lineItem: */
IntPair newKey = new IntPair(new IntValue(Integer.parseInt(lineItem.getStringValueAt(0))), new IntValue(Integer.parseInt(lineItem.getStringValueAt(1))));
Tuple newValue = new Tuple();
newValue.addAttribute(year.toString()); // year
newValue.addAttribute(lineItem.getStringValueAt(2)); // quantity
newValue.addAttribute(lineItem.getStringValueAt(3)); // price
value1.setField(0, newKey);
value1.setField(1, newValue);
out.collect(value1);
}
}