/*
* Copyright 2006-2007 the original author or authors.
*
* Licensed 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.springframework.batch.item.support;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import junit.framework.TestCase;
import org.springframework.batch.item.support.ListItemReader;
import org.springframework.batch.support.transaction.ResourcelessTransactionManager;
import org.springframework.batch.support.transaction.TransactionAwareProxyFactory;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
public class TransactionAwareListItemReaderTests extends TestCase {
private ListItemReader<String> reader;
@Override
protected void setUp() throws Exception {
super.setUp();
reader = new ListItemReader<String>(TransactionAwareProxyFactory.createTransactionalList(Arrays.asList("a", "b", "c")));
}
public void testNext() throws Exception {
assertEquals("a", reader.read());
assertEquals("b", reader.read());
assertEquals("c", reader.read());
assertEquals(null, reader.read());
}
public void testCommit() throws Exception {
PlatformTransactionManager transactionManager = new ResourcelessTransactionManager();
final List<Object> taken = new ArrayList<Object>();
try {
new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
@Override
public Void doInTransaction(TransactionStatus status) {
taken.add(reader.read());
return null;
}
});
}
catch (RuntimeException e) {
fail("Unexpected RuntimeException");
assertEquals("Rollback!", e.getMessage());
}
assertEquals(1, taken.size());
assertEquals("a", taken.get(0));
taken.clear();
Object next = reader.read();
while (next != null) {
taken.add(next);
next = reader.read();
}
// System.err.println(taken);
assertFalse(taken.contains("a"));
}
public void testTransactionalExhausted() throws Exception {
PlatformTransactionManager transactionManager = new ResourcelessTransactionManager();
final List<Object> taken = new ArrayList<Object>();
new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
@Override
public Void doInTransaction(TransactionStatus status) {
Object next = reader.read();
while (next != null) {
taken.add(next);
next = reader.read();
}
return null;
}
});
assertEquals(3, taken.size());
assertEquals("a", taken.get(0));
}
public void testRollback() throws Exception {
PlatformTransactionManager transactionManager = new ResourcelessTransactionManager();
final List<Object> taken = new ArrayList<Object>();
try {
new TransactionTemplate(transactionManager).execute(new TransactionCallback<Void>() {
@Override
public Void doInTransaction(TransactionStatus status) {
taken.add(reader.read());
throw new RuntimeException("Rollback!");
}
});
fail("Expected RuntimeException");
}
catch (RuntimeException e) {
assertEquals("Rollback!", e.getMessage());
}
assertEquals(1, taken.size());
assertEquals("a", taken.get(0));
taken.clear();
Object next = reader.read();
while (next != null) {
taken.add(next);
next = reader.read();
}
System.err.println(taken);
assertTrue(taken.contains("a"));
}
}