public boolean isNativeConnectionNecessaryForNativeStatements() {
        return getDelegatedExtractor().isNativeConnectionNecessaryForNativeStatements();
    }
A class to lazily instantiate a native JDBC extractor.
<p />
We need to lazily instantiate it because otherwise Spring will construct it for us, and users might get class not
found errors (eg if they're not using Weblogic and Spring tries to load the WeblogicNativeJdbcExtractor, things get
ugly).
node/etl/src/main/java/com/alibaba/otter/node/etl/common/db/lob/LazyNativeJdbcExtractor.java