/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.aggregation;
import io.crate.metadata.FunctionIdent;
import io.crate.metadata.Functions;
import io.crate.operation.Input;
import io.crate.operation.aggregation.impl.AggregationImplModule;
import io.crate.operation.aggregation.impl.CountAggregation;
import io.crate.planner.symbol.Aggregation;
import io.crate.planner.symbol.InputColumn;
import io.crate.planner.symbol.Symbol;
import io.crate.types.DataType;
import io.crate.types.DataTypes;
import org.elasticsearch.common.inject.Injector;
import org.elasticsearch.common.inject.ModulesBuilder;
import org.junit.Before;
import org.junit.Test;
import java.util.Arrays;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
public class AggregationCollectorTest {
private FunctionIdent countAggIdent;
private AggregationFunction countImpl;
@Before
public void setUpFunctions() {
Injector injector = new ModulesBuilder().add(new AggregationImplModule()).createInjector();
Functions functions = injector.getInstance(Functions.class);
countAggIdent = new FunctionIdent(CountAggregation.NAME, Arrays.<DataType>asList(DataTypes.STRING));
countImpl = (AggregationFunction) functions.get(countAggIdent);
}
@Test
public void testAggregationFromPartial() {
Aggregation aggregation = new Aggregation(
countImpl.info(),
Arrays.<Symbol>asList(new InputColumn(0)),
Aggregation.Step.PARTIAL,
Aggregation.Step.FINAL
);
Input dummyInput = new Input() {
CountAggregation.CountAggState state = new CountAggregation.CountAggState() {{ value = 10L; }};
@Override
public Object value() {
return state;
}
};
AggregationCollector collector = new AggregationCollector(aggregation, countImpl, dummyInput);
collector.startCollect();
collector.processRow();
collector.processRow();
Object result = collector.finishCollect();
assertThat((Long)result, is(20L));
}
@Test
public void testAggregationFromIterToFinal() {
Aggregation aggregation = new Aggregation(
countImpl.info(),
Arrays.<Symbol>asList(new InputColumn(0)),
Aggregation.Step.ITER,
Aggregation.Step.FINAL
);
Input dummyInput = new Input() {
@Override
public Object value() {
return 300L;
}
};
AggregationCollector collector = new AggregationCollector(aggregation, countImpl, dummyInput);
collector.startCollect();
for (int i = 0; i < 5; i++) {
collector.processRow();
}
long result = (Long)collector.finishCollect();
assertThat(result, is(5L));
}
}