/*
* 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.phoenix.iterate;
import static org.apache.phoenix.query.QueryConstants.SINGLE_COLUMN;
import static org.apache.phoenix.query.QueryConstants.SINGLE_COLUMN_FAMILY;
import static org.apache.phoenix.query.QueryConstants.SINGLE_COLUMN_FAMILY_NAME;
import static org.apache.phoenix.query.QueryConstants.SINGLE_COLUMN_NAME;
import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.phoenix.compile.AggregationManager;
import org.apache.phoenix.compile.SequenceManager;
import org.apache.phoenix.compile.StatementContext;
import org.apache.phoenix.expression.Expression;
import org.apache.phoenix.expression.KeyValueColumnExpression;
import org.apache.phoenix.expression.aggregator.ClientAggregators;
import org.apache.phoenix.expression.function.SingleAggregateFunction;
import org.apache.phoenix.expression.function.SumAggregateFunction;
import org.apache.phoenix.jdbc.PhoenixConnection;
import org.apache.phoenix.jdbc.PhoenixStatement;
import org.apache.phoenix.query.BaseConnectionlessQueryTest;
import org.apache.phoenix.schema.PDataType;
import org.apache.phoenix.schema.PLongColumn;
import org.apache.phoenix.schema.PName;
import org.apache.phoenix.schema.SortOrder;
import org.apache.phoenix.schema.tuple.SingleKeyValueTuple;
import org.apache.phoenix.schema.tuple.Tuple;
import org.apache.phoenix.util.AssertResults;
import org.apache.phoenix.util.PropertiesUtil;
import org.junit.Test;
public class AggregateResultScannerTest extends BaseConnectionlessQueryTest {
private final static byte[] A = Bytes.toBytes("a");
private final static byte[] B = Bytes.toBytes("b");
@Test
public void testAggregatingMergeSort() throws Throwable {
Tuple[] results1 = new Tuple[] {
new SingleKeyValueTuple(new KeyValue(A, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(1L))),
};
Tuple[] results2 = new Tuple[] {
new SingleKeyValueTuple(new KeyValue(B, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(1L)))
};
Tuple[] results3 = new Tuple[] {
new SingleKeyValueTuple(new KeyValue(A, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(1L))),
new SingleKeyValueTuple(new KeyValue(B, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(1L))),
};
Tuple[] results4 = new Tuple[] {
new SingleKeyValueTuple(new KeyValue(A, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(1L))),
};
final List<PeekingResultIterator>results = new ArrayList<PeekingResultIterator>(Arrays.asList(new PeekingResultIterator[] {
new MaterializedResultIterator(Arrays.asList(results1)),
new MaterializedResultIterator(Arrays.asList(results2)),
new MaterializedResultIterator(Arrays.asList(results3)),
new MaterializedResultIterator(Arrays.asList(results4))}));
Tuple[] expectedResults = new Tuple[] {
new SingleKeyValueTuple(new KeyValue(A, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(3L))),
new SingleKeyValueTuple(new KeyValue(B, SINGLE_COLUMN_FAMILY, SINGLE_COLUMN, PDataType.LONG.toBytes(2L))),
};
PhoenixConnection pconn = DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES)).unwrap(PhoenixConnection.class);
PhoenixStatement statement = new PhoenixStatement(pconn);
StatementContext context = new StatementContext(statement, null, new Scan(), new SequenceManager(statement));
AggregationManager aggregationManager = context.getAggregationManager();
SumAggregateFunction func = new SumAggregateFunction(Arrays.<Expression>asList(new KeyValueColumnExpression(new PLongColumn() {
@Override
public PName getName() {
return SINGLE_COLUMN_NAME;
}
@Override
public PName getFamilyName() {
return SINGLE_COLUMN_FAMILY_NAME;
}
@Override
public int getPosition() {
return 0;
}
@Override
public SortOrder getSortOrder() {
return SortOrder.getDefault();
}
@Override
public void readFields(DataInput arg0) throws IOException {
}
@Override
public void write(DataOutput arg0) throws IOException {
}
@Override
public Integer getArraySize() {
return 0;
}
@Override
public byte[] getViewConstant() {
return null;
}
@Override
public boolean isViewReferenced() {
return false;
}
})), null);
aggregationManager.setAggregators(new ClientAggregators(Collections.<SingleAggregateFunction>singletonList(func), 1));
ResultIterators iterators = new ResultIterators() {
@Override
public List<PeekingResultIterator> getIterators() throws SQLException {
return results;
}
@Override
public int size() {
return results.size();
}
@Override
public void explain(List<String> planSteps) {
}
};
ResultIterator scanner = new GroupedAggregatingResultIterator(new MergeSortRowKeyResultIterator(iterators), aggregationManager.getAggregators());
AssertResults.assertResults(scanner, expectedResults);
}
}