/**
* 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.hadoop.hive.serde2.objectinspector;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.apache.commons.lang.mutable.MutableObject;
import org.apache.hadoop.hive.common.ObjectPair;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector.Category;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.thrift.test.Complex;
import junit.framework.TestCase;
/**
* TestReflectionObjectInspectors.
*
*/
public class TestReflectionObjectInspectors extends TestCase {
public void testReflectionObjectInspectors() throws Throwable {
try {
ObjectInspector oi1 = ObjectInspectorFactory
.getReflectionObjectInspector(MyStruct.class,
ObjectInspectorFactory.ObjectInspectorOptions.JAVA);
ObjectInspector oi2 = ObjectInspectorFactory
.getReflectionObjectInspector(MyStruct.class,
ObjectInspectorFactory.ObjectInspectorOptions.JAVA);
assertEquals(oi1, oi2);
// metadata
assertEquals(Category.STRUCT, oi1.getCategory());
StructObjectInspector soi = (StructObjectInspector) oi1;
List<? extends StructField> fields = soi.getAllStructFieldRefs();
assertEquals(6, fields.size());
assertEquals(fields.get(2), soi.getStructFieldRef("myString"));
// null
for (int i = 0; i < fields.size(); i++) {
assertNull(soi.getStructFieldData(null, fields.get(i)));
}
assertNull(soi.getStructFieldsDataAsList(null));
// non nulls
MyStruct a = new MyStruct();
a.myInt = 1;
a.myInteger = 2;
a.myString = "test";
a.myStruct = a;
a.myListString = Arrays.asList(new String[] {"a", "b", "c"});
a.myMapStringString = new HashMap<String, String>();
a.myMapStringString.put("key", "value");
assertEquals(1, soi.getStructFieldData(a, fields.get(0)));
assertEquals(2, soi.getStructFieldData(a, fields.get(1)));
assertEquals("test", soi.getStructFieldData(a, fields.get(2)));
assertEquals(a, soi.getStructFieldData(a, fields.get(3)));
assertEquals(a.myListString, soi.getStructFieldData(a, fields.get(4)));
assertEquals(a.myMapStringString, soi
.getStructFieldData(a, fields.get(5)));
ArrayList<Object> afields = new ArrayList<Object>();
for (int i = 0; i < 6; i++) {
afields.add(soi.getStructFieldData(a, fields.get(i)));
}
assertEquals(afields, soi.getStructFieldsDataAsList(a));
// sub fields
assertEquals(PrimitiveObjectInspectorFactory.javaIntObjectInspector,
fields.get(0).getFieldObjectInspector());
assertEquals(PrimitiveObjectInspectorFactory.javaIntObjectInspector,
fields.get(1).getFieldObjectInspector());
assertEquals(PrimitiveObjectInspectorFactory.javaStringObjectInspector,
fields.get(2).getFieldObjectInspector());
assertEquals(soi, fields.get(3).getFieldObjectInspector());
assertEquals(
ObjectInspectorFactory
.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
fields.get(4).getFieldObjectInspector());
assertEquals(ObjectInspectorFactory.getStandardMapObjectInspector(
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
PrimitiveObjectInspectorFactory.javaStringObjectInspector), fields
.get(5).getFieldObjectInspector());
} catch (Throwable e) {
e.printStackTrace();
throw e;
}
}
public void testObjectInspectorThreadSafety() throws InterruptedException {
final int workerCount = 5; // 5 workers to run getReflectionObjectInspector concurrently
final ScheduledExecutorService executorService = Executors.newScheduledThreadPool(workerCount);
final MutableObject exception = new MutableObject();
Thread runner = new Thread(new Runnable() {
@Override
@SuppressWarnings("unchecked")
public void run() {
Future<ObjectInspector>[] results = (Future<ObjectInspector>[])new Future[workerCount];
ObjectPair<Type, ObjectInspectorFactory.ObjectInspectorOptions>[] types =
(ObjectPair<Type, ObjectInspectorFactory.ObjectInspectorOptions>[])new ObjectPair[] {
new ObjectPair<Type, ObjectInspectorFactory.ObjectInspectorOptions>(Complex.class,
ObjectInspectorFactory.ObjectInspectorOptions.THRIFT),
new ObjectPair<Type, ObjectInspectorFactory.ObjectInspectorOptions>(MyStruct.class,
ObjectInspectorFactory.ObjectInspectorOptions.JAVA),
};
try {
for (int i = 0; i < 20; i++) { // repeat 20 times
for (final ObjectPair<Type, ObjectInspectorFactory.ObjectInspectorOptions> t: types) {
ObjectInspectorFactory.objectInspectorCache.clear();
for (int k = 0; k < workerCount; k++) {
results[k] = executorService.schedule(new Callable<ObjectInspector>() {
@Override
public ObjectInspector call() throws Exception {
return ObjectInspectorFactory.getReflectionObjectInspector(
t.getFirst(), t.getSecond());
}
}, 50, TimeUnit.MILLISECONDS);
}
ObjectInspector oi = results[0].get();
for (int k = 1; k < workerCount; k++) {
assertEquals(oi, results[k].get());
}
}
}
} catch (Throwable e) {
exception.setValue(e);
}
}
});
try {
runner.start();
long endTime = System.currentTimeMillis() + 300000; // timeout in 5 minutes
while (runner.isAlive()) {
if (System.currentTimeMillis() > endTime) {
runner.interrupt(); // Interrupt the runner thread
fail("Timed out waiting for the runner to finish");
}
runner.join(10000);
}
if (exception.getValue() != null) {
fail("Got exception: " + exception.getValue());
}
} finally {
executorService.shutdownNow();
}
}
}