private void clearHandlesResources() {
SingleNodeHandler singleHander = singleNodeHandler;
if (singleHander != null) {
singleHander.clearResources();
singleNodeHandler = null;
}
MultiNodeQueryHandler multiHandler = multiNodeHandler;
if (multiHandler != null) {
multiHandler.clearResources();
multiNodeHandler = null;
}
}
@Override
public void execute(RouteResultset rrs, int type) {
// clear prev execute resources
clearHandlesResources();
if (LOGGER.isDebugEnabled()) {
StringBuilder s = new StringBuilder();
LOGGER.debug(s.append(this.conInf.toString()).append(rrs).toString() + " rrs ");
}
// 检查路由结果是否为空
RouteResultsetNode[] nodes = rrs.getNodes();
if (nodes == null
|| nodes.length == 0
|| nodes[0].getName() == null
|| nodes[0].getName().equals("")) {
writeErrMessage(
ErrorCode.ER_NO_DB_ERROR,
"No dataNode found ,please check tables defined in schema:" + this.conInf.getSchema());
return;
}
if (nodes.length == 1) {
singleNodeHandler = new SingleNodeHandler(rrs, this);
try {
singleNodeHandler.execute();
} catch (Exception e) {
LOGGER.warn(new StringBuilder().append(this.conInf.toString()).append(rrs), e);
writeErrMessage(ErrorCode.ERR_HANDLE_DATA, e.toString());
}
} else {
boolean autocommit = this.autocommit;
DataMergeService dataMergeSvr = null;
if (ServerParse.SELECT == type && rrs.needMerge()) {
dataMergeSvr = new DataMergeService(rrs);
}
multiNodeHandler = new MultiNodeQueryHandler(rrs, autocommit, this, dataMergeSvr);
try {
multiNodeHandler.execute();
} catch (Exception e) {
LOGGER.warn(new StringBuilder().append(this.conInf.toString()).append(rrs), e);
writeErrMessage(ErrorCode.ERR_HANDLE_DATA, e.toString());
}
}
}