public void deferLoad(
MappedStatement ms, MetaObject resultObject, String property, CacheKey key) {
if (closed) throw new ExecutorException("Executor was closed.");
DeferredLoad deferredLoad =
new DeferredLoad(ms, resultObject, property, key, localCache, configuration);
if (deferredLoad.canLoad()) {
deferredLoad.load();
} else {
deferredLoads.add(
new DeferredLoad(ms, resultObject, property, key, localCache, configuration));
}
}
@SuppressWarnings("unchecked")
public <E> List<E> query(
MappedStatement ms,
Object parameter,
RowBounds rowBounds,
ResultHandler resultHandler,
CacheKey key,
BoundSql boundSql)
throws SQLException {
ErrorContext.instance()
.resource(ms.getResource())
.activity("executing a query")
.object(ms.getId());
if (closed) throw new ExecutorException("Executor was closed.");
if (queryStack == 0 && ms.isFlushCacheRequired()) {
clearLocalCache();
}
List<E> list;
try {
queryStack++;
list = resultHandler == null ? (List<E>) localCache.getObject(key) : null;
if (list != null) {
handleLocallyCachedOutputParameters(ms, key, parameter, boundSql);
} else {
list = queryFromDatabase(ms, parameter, rowBounds, resultHandler, key, boundSql);
}
} finally {
queryStack--;
}
if (queryStack == 0) {
for (DeferredLoad deferredLoad : deferredLoads) {
deferredLoad.load();
}
if (configuration.getLocalCacheScope() == LocalCacheScope.STATEMENT) {
clearLocalCache(); // issue #482
}
}
return list;
}