/**
* 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.gora.mapreduce;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import org.apache.avro.Schema.Field;
import org.apache.gora.examples.generated.Employee;
import org.apache.gora.mock.persistency.MockPersistent;
import org.apache.gora.mock.query.MockQuery;
import org.apache.gora.mock.store.MockDataStore;
import org.apache.gora.query.PartitionQuery;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.Job;
import org.junit.Test;
import static org.junit.Assert.assertTrue;
public class TestGoraInputFormat {
public List<InputSplit> getInputSplits()
throws IOException, InterruptedException {
Job job = new Job();
MockDataStore store = MockDataStore.get();
MockQuery query = store.newQuery();
query.setFields(getEmployeeFieldNames());
GoraInputFormat.setInput(job, query, false);
GoraInputFormat<String, MockPersistent> inputFormat
= new GoraInputFormat<String, MockPersistent>();
inputFormat.setConf(job.getConfiguration());
return inputFormat.getSplits(job);
}
/**
* First, asserts that the attempt to obtain splits results in
* greater than 0 splits which can be used for computation.
* We then check that the partition query (obtained by using the
* splits) has the same fields as we would expect by directly
* accessing the fields of an Employee object.
* @throws IOException
* @throws InterruptedException
*/
@Test
@SuppressWarnings("rawtypes")
public void testGetSplits() throws IOException, InterruptedException {
List<InputSplit> splits = getInputSplits();
assertTrue(splits.size() > 0);
InputSplit split = splits.get(0);
PartitionQuery query = ((GoraInputSplit)split).getQuery();
assertTrue(Arrays.equals(getEmployeeFieldNames(), query.getFields()));
}
private static String[] getEmployeeFieldNames(){
List<Field> fields = Employee.SCHEMA$.getFields();
String[] fieldNames = new String[fields.size()];
for(int i = 0; i< fieldNames.length; i++){
fieldNames[i] = fields.get(i).name();
}
return fieldNames;
}
}