neuyilan commented on a change in pull request #460:
URL: https://github.com/apache/iotdb/pull/460#discussion_r537375072
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File path: server/src/main/java/org/apache/iotdb/db/metadata/PartialPath.java
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@@ -20,24 +20,29 @@
import java.util.ArrayList;
import java.util.Arrays;
+import java.util.Collections;
import java.util.List;
import org.apache.iotdb.db.conf.IoTDBConstant;
import org.apache.iotdb.db.exception.metadata.IllegalPathException;
import org.apache.iotdb.db.utils.TestOnly;
import org.apache.iotdb.tsfile.common.constant.TsFileConstant;
import org.apache.iotdb.tsfile.read.common.Path;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* A prefix path, suffix path or fullPath generated from SQL.
* Usually used in the IoTDB server module
*/
public class PartialPath extends Path implements Comparable<Path> {
+ private static final Logger logger =
LoggerFactory.getLogger(PartialPath.class);
+
private String[] nodes;
// alias of measurement
- private String measurementAlias = null;
+ private String measurementAlias = "";
// alias of time series used in SELECT AS
- private String tsAlias = null;
+ private String tsAlias = "";
Review comment:
as far as I know, iotdb does not support empty string as an alias, so
it's ok to use an empty string here.
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