/**
* 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.camel.processor.aggregate.jdbc;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import org.apache.camel.util.ObjectHelper;
import org.springframework.dao.DataIntegrityViolationException;
/**
* A default {@link JdbcOptimisticLockingExceptionMapper} which checks the caused exception (and its nested)
* whether any of them is a constraint violation exception.
* <p/>
* The following check is done:
* <ul>
* <li>If the caused exception is an {@link SQLException}</li> then the SQLState is checked if starts with <tt>23</tt>.
* <li>If the caused exception is a {@link DataIntegrityViolationException}</li>
* <li>If the caused exception class name has <tt>ConstraintViolation</tt></li> in its name.
* <li>optional checking for FQN class name matches if any class names has been configured</li>
* </ul>
* In addition you can add FQN classnames using the {@link #addClassName(String)} or {@link #setClassNames(java.util.Set)}
* methods. These class names is also matched. This allows to add vendor specific exception classes.
*/
public class DefaultJdbcOptimisticLockingExceptionMapper implements JdbcOptimisticLockingExceptionMapper {
private final Set<String> classNames = new LinkedHashSet<String>();
@Override
public boolean isOptimisticLocking(Exception cause) {
Iterator<Throwable> it = ObjectHelper.createExceptionIterator(cause);
while (it.hasNext()) {
Throwable throwable = it.next();
// if its a SQL exception
if (throwable instanceof SQLException) {
SQLException se = (SQLException) throwable;
if (isConstraintViolation(se)) {
return true;
}
}
if (throwable instanceof DataIntegrityViolationException) {
return true;
}
// fallback to names
String name = throwable.getClass().getName();
if (name.contains("ConstraintViolation") || hasClassName(name)) {
return true;
}
}
return false;
}
public static boolean isConstraintViolation(SQLException e) {
return e.getSQLState().startsWith("23");
}
private boolean hasClassName(String name) {
for (String className : classNames) {
if (className.equals(name)) {
return true;
}
}
return false;
}
public void addClassName(String name) {
classNames.add(name);
}
public void setClassNames(Set<String> names) {
classNames.clear();
classNames.addAll(names);
}
}