/*
* 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.types.StringValue;
import org.apache.flink.util.Collector;
@SuppressWarnings("serial")
public class FilteredPartsJoin extends JoinFunction {
private final IntPair partAndSupplierKey = new IntPair();
private final StringValue supplyCostStr = new StringValue();
private final Tuple ordersValue = new Tuple();
/**
* Join together parts and orderedParts by matching partkey and suppkey.
*
* Output Schema:
* Key: suppkey
* Value: (amount, year)
*
*/
@Override
public void join(Record value1, Record value2, Collector<Record> out)
throws Exception {
IntPair partAndSupplierKey = value1.getField(0, this.partAndSupplierKey);
StringValue supplyCostStr = value1.getField(1, this.supplyCostStr);
Tuple ordersValue = value2.getField(1, this.ordersValue);
IntValue year = new IntValue(Integer.parseInt(ordersValue.getStringValueAt(0)));
float quantity = Float.parseFloat(ordersValue.getStringValueAt(1));
float price = Float.parseFloat(ordersValue.getStringValueAt(2));
float supplyCost = Float.parseFloat(supplyCostStr.toString());
float amount = price - supplyCost * quantity;
/* Push (supplierKey, (amount, year)): */
value1.setField(0, partAndSupplierKey.getSecond());
value1.setField(1, new StringIntPair(new StringValue("" + amount), year));
out.collect(value1);
}
}