private void processGeneratedKeys(Executor executor, MappedStatement ms, Object parameter) {
try {
if (parameter != null && keyStatement != null && keyStatement.getKeyProperties() != null) {
String keyProperty =
keyStatement.getKeyProperties()[0]; // just one key property is supported
final Configuration configuration = ms.getConfiguration();
final MetaObject metaParam = configuration.newMetaObject(parameter);
if (keyProperty != null && metaParam.hasSetter(keyProperty)) {
// Do not close keyExecutor.
// The transaction will be closed by parent executor.
Executor keyExecutor =
configuration.newExecutor(executor.getTransaction(), ExecutorType.SIMPLE);
List<Object> values =
keyExecutor.query(
keyStatement, parameter, RowBounds.DEFAULT, Executor.NO_RESULT_HANDLER);
if (values.size() == 0) {
throw new ExecutorException("SelectKey returned no data.");
} else if (values.size() > 1) {
throw new ExecutorException("SelectKey returned more than one value.");
} else {
metaParam.setValue(keyProperty, values.get(0));
}
}
}
} catch (ExecutorException e) {
throw e;
} catch (Exception e) {
throw new ExecutorException(
"Error selecting key or setting result to parameter object. Cause: " + e, e);
}
}
/**
* @description TODO
* @createTime 2016-4-27 下午12:33:11
* @fileName CacheInterceptor.java
* @author yaojiamin
*/
private <E> List<E> executeQuery(
CacheHandlerBean cacheHandlerBean, BoundSql boundSql, CacheKey cacheKey, Executor executor)
throws SQLException {
return executor.query(
cacheHandlerBean.getMappedStatement(),
cacheHandlerBean.getParameterObject(),
cacheHandlerBean.getRowBounds(),
cacheHandlerBean.getResultHandler(),
cacheKey,
boundSql);
}
private <E> List<E> selectList() throws SQLException {
Executor localExecutor = executor;
if (localExecutor.isClosed()) {
localExecutor = newExecutor();
}
try {
return localExecutor.<E>query(
mappedStatement,
parameterObject,
RowBounds.DEFAULT,
Executor.NO_RESULT_HANDLER,
cacheKey,
boundSql);
} finally {
if (localExecutor != executor) {
localExecutor.close(false);
}
}
}