liutaohua commented on a change in pull request #1731:
URL: https://github.com/apache/incubator-iotdb/pull/1731#discussion_r492644306
##########
File path: server/src/main/java/org/apache/iotdb/db/metadata/MManager.java
##########
@@ -937,12 +937,11 @@ public int getNodesCountInGivenLevel(PartialPath
prefixPath, int level) throws M
try {
Pair<Map<String, String>, Map<String, String>> pair =
Review comment:
Change to a more meaningful name, like `tagAndAttributePair`
##########
File path: server/src/main/java/org/apache/iotdb/db/metadata/MManager.java
##########
@@ -1003,18 +1002,13 @@ private boolean match(PartialPath fullPath, String[]
prefixNodes) {
for (Pair<PartialPath, String[]> ansString : ans) {
long tagFileOffset = Long.parseLong(ansString.right[5]);
try {
- if (tagFileOffset < 0) {
- // no tags/attributes
- res.add(new ShowTimeSeriesResult(ansString.left.getFullPath(),
ansString.right[0], ansString.right[1], ansString.right[2],
- ansString.right[3], ansString.right[4],
Collections.emptyMap()));
- } else {
- // has tags/attributes
- Pair<Map<String, String>, Map<String, String>> pair =
- tagLogFile.read(config.getTagAttributeTotalSize(),
tagFileOffset);
- pair.left.putAll(pair.right);
- res.add(new ShowTimeSeriesResult(ansString.left.getFullPath(),
ansString.right[0], ansString.right[1], ansString.right[2],
- ansString.right[3], ansString.right[4], pair.left));
+ Pair<Map<String, String>, Map<String, String>> pair = new
Pair<>(Collections.emptyMap(),Collections.emptyMap());
Review comment:
same
##########
File path:
server/src/main/java/org/apache/iotdb/db/qp/executor/PlanExecutor.java
##########
@@ -566,7 +567,7 @@ private QueryDataSet
processShowStorageGroup(ShowStorageGroupPlan showStorageGro
private QueryDataSet processShowTimeseries(ShowTimeSeriesPlan
showTimeSeriesPlan,
QueryContext context) throws MetadataException {
List<ShowTimeSeriesResult> timeseriesList =
showTimeseries(showTimeSeriesPlan, context);
- return QueryUtils.getQueryDataSet(timeseriesList, showTimeSeriesPlan,
context);
+ return new ShowTimeseriesDataSet(showTimeSeriesPlan, context,
timeseriesList);
}
protected List<ShowTimeSeriesResult> showTimeseries(ShowTimeSeriesPlan plan,
QueryContext context)
Review comment:
I think this method can be removed, or move it to `ShowTimeseriesDataSet`
##########
File path:
server/src/main/java/org/apache/iotdb/db/query/dataset/ShowTimeseriesDataSet.java
##########
@@ -19,44 +19,123 @@
package org.apache.iotdb.db.query.dataset;
-import static
org.apache.iotdb.db.utils.QueryUtils.transferShowTimeSeriesResultToRecordList;
-
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_ATTRIBUTE;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_STORAGE_GROUP;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TAG;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ALIAS;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_COMPRESSION;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_DATATYPE;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ENCODING;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
import org.apache.iotdb.db.exception.metadata.MetadataException;
import org.apache.iotdb.db.metadata.MManager;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.physical.sys.ShowTimeSeriesPlan;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
+import org.apache.iotdb.tsfile.read.common.Field;
import org.apache.iotdb.tsfile.read.common.Path;
import org.apache.iotdb.tsfile.read.common.RowRecord;
import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet;
+import org.apache.iotdb.tsfile.utils.Binary;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ShowTimeseriesDataSet extends QueryDataSet {
private static final Logger logger =
LoggerFactory.getLogger(ShowTimeseriesDataSet.class);
-
private final ShowTimeSeriesPlan plan;
private List<RowRecord> result = new ArrayList<>();
private int index = 0;
private QueryContext context;
+ private List<ShowTimeSeriesResult> timeseriesList;
+ private boolean hasSetRecord;
public boolean hasLimit = true;
- public ShowTimeseriesDataSet(List<PartialPath> paths, List<TSDataType>
dataTypes,
- ShowTimeSeriesPlan showTimeSeriesPlan, QueryContext context) {
- super(new ArrayList<>(paths), dataTypes);
+ private static Path[] resourcePaths = {new PartialPath(COLUMN_TIMESERIES,
false),
+ new PartialPath(COLUMN_TIMESERIES_ALIAS, false), new
PartialPath(COLUMN_STORAGE_GROUP, false),
+ new PartialPath(COLUMN_TIMESERIES_DATATYPE, false), new
PartialPath(COLUMN_TIMESERIES_ENCODING, false),
+ new PartialPath(COLUMN_TIMESERIES_COMPRESSION, false), new
PartialPath(COLUMN_TAG, false),
+ new PartialPath(COLUMN_ATTRIBUTE, false)};
+ private static TSDataType[] resourceTypes = {TSDataType.TEXT,
TSDataType.TEXT, TSDataType.TEXT,
+ TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT,
TSDataType.TEXT};
+
+ public ShowTimeseriesDataSet(ShowTimeSeriesPlan showTimeSeriesPlan,
QueryContext context,
+ List<ShowTimeSeriesResult> timeseriesList) {
+ super(Arrays.asList(resourcePaths), Arrays.asList(resourceTypes));
this.plan = showTimeSeriesPlan;
this.context = context;
+ this.timeseriesList = timeseriesList;
+ this.hasSetRecord = false;
+ }
+
+ public QueryDataSet getQueryDataSet() {
+ hasLimit = plan.hasLimit();
Review comment:
i think that it can be initialized in the `constructor`
##########
File path:
server/src/main/java/org/apache/iotdb/db/query/dataset/ShowTimeseriesDataSet.java
##########
@@ -19,44 +19,123 @@
package org.apache.iotdb.db.query.dataset;
-import static
org.apache.iotdb.db.utils.QueryUtils.transferShowTimeSeriesResultToRecordList;
-
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_ATTRIBUTE;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_STORAGE_GROUP;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TAG;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ALIAS;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_COMPRESSION;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_DATATYPE;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ENCODING;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
import org.apache.iotdb.db.exception.metadata.MetadataException;
import org.apache.iotdb.db.metadata.MManager;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.physical.sys.ShowTimeSeriesPlan;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
+import org.apache.iotdb.tsfile.read.common.Field;
import org.apache.iotdb.tsfile.read.common.Path;
import org.apache.iotdb.tsfile.read.common.RowRecord;
import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet;
+import org.apache.iotdb.tsfile.utils.Binary;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ShowTimeseriesDataSet extends QueryDataSet {
private static final Logger logger =
LoggerFactory.getLogger(ShowTimeseriesDataSet.class);
-
private final ShowTimeSeriesPlan plan;
private List<RowRecord> result = new ArrayList<>();
private int index = 0;
private QueryContext context;
+ private List<ShowTimeSeriesResult> timeseriesList;
+ private boolean hasSetRecord;
public boolean hasLimit = true;
- public ShowTimeseriesDataSet(List<PartialPath> paths, List<TSDataType>
dataTypes,
- ShowTimeSeriesPlan showTimeSeriesPlan, QueryContext context) {
- super(new ArrayList<>(paths), dataTypes);
+ private static Path[] resourcePaths = {new PartialPath(COLUMN_TIMESERIES,
false),
+ new PartialPath(COLUMN_TIMESERIES_ALIAS, false), new
PartialPath(COLUMN_STORAGE_GROUP, false),
+ new PartialPath(COLUMN_TIMESERIES_DATATYPE, false), new
PartialPath(COLUMN_TIMESERIES_ENCODING, false),
+ new PartialPath(COLUMN_TIMESERIES_COMPRESSION, false), new
PartialPath(COLUMN_TAG, false),
+ new PartialPath(COLUMN_ATTRIBUTE, false)};
+ private static TSDataType[] resourceTypes = {TSDataType.TEXT,
TSDataType.TEXT, TSDataType.TEXT,
+ TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT,
TSDataType.TEXT};
+
+ public ShowTimeseriesDataSet(ShowTimeSeriesPlan showTimeSeriesPlan,
QueryContext context,
+ List<ShowTimeSeriesResult> timeseriesList) {
+ super(Arrays.asList(resourcePaths), Arrays.asList(resourceTypes));
this.plan = showTimeSeriesPlan;
this.context = context;
+ this.timeseriesList = timeseriesList;
+ this.hasSetRecord = false;
+ }
+
+ public QueryDataSet getQueryDataSet() {
+ hasLimit = plan.hasLimit();
+ for (ShowTimeSeriesResult result : timeseriesList) {
+ RowRecord record = new RowRecord(0);
Review comment:
duplicate code, `transferShowTimeSeriesResultToRecordList` and
`getQueryDataSet `
##########
File path:
server/src/main/java/org/apache/iotdb/db/query/dataset/ShowTimeseriesDataSet.java
##########
@@ -19,44 +19,123 @@
package org.apache.iotdb.db.query.dataset;
-import static
org.apache.iotdb.db.utils.QueryUtils.transferShowTimeSeriesResultToRecordList;
-
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_ATTRIBUTE;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_STORAGE_GROUP;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TAG;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ALIAS;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_COMPRESSION;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_DATATYPE;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ENCODING;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
import org.apache.iotdb.db.exception.metadata.MetadataException;
import org.apache.iotdb.db.metadata.MManager;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.physical.sys.ShowTimeSeriesPlan;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
+import org.apache.iotdb.tsfile.read.common.Field;
import org.apache.iotdb.tsfile.read.common.Path;
import org.apache.iotdb.tsfile.read.common.RowRecord;
import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet;
+import org.apache.iotdb.tsfile.utils.Binary;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ShowTimeseriesDataSet extends QueryDataSet {
private static final Logger logger =
LoggerFactory.getLogger(ShowTimeseriesDataSet.class);
-
private final ShowTimeSeriesPlan plan;
private List<RowRecord> result = new ArrayList<>();
private int index = 0;
private QueryContext context;
+ private List<ShowTimeSeriesResult> timeseriesList;
+ private boolean hasSetRecord;
public boolean hasLimit = true;
- public ShowTimeseriesDataSet(List<PartialPath> paths, List<TSDataType>
dataTypes,
- ShowTimeSeriesPlan showTimeSeriesPlan, QueryContext context) {
- super(new ArrayList<>(paths), dataTypes);
+ private static Path[] resourcePaths = {new PartialPath(COLUMN_TIMESERIES,
false),
+ new PartialPath(COLUMN_TIMESERIES_ALIAS, false), new
PartialPath(COLUMN_STORAGE_GROUP, false),
+ new PartialPath(COLUMN_TIMESERIES_DATATYPE, false), new
PartialPath(COLUMN_TIMESERIES_ENCODING, false),
+ new PartialPath(COLUMN_TIMESERIES_COMPRESSION, false), new
PartialPath(COLUMN_TAG, false),
+ new PartialPath(COLUMN_ATTRIBUTE, false)};
+ private static TSDataType[] resourceTypes = {TSDataType.TEXT,
TSDataType.TEXT, TSDataType.TEXT,
+ TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT,
TSDataType.TEXT};
+
+ public ShowTimeseriesDataSet(ShowTimeSeriesPlan showTimeSeriesPlan,
QueryContext context,
+ List<ShowTimeSeriesResult> timeseriesList) {
+ super(Arrays.asList(resourcePaths), Arrays.asList(resourceTypes));
this.plan = showTimeSeriesPlan;
this.context = context;
+ this.timeseriesList = timeseriesList;
+ this.hasSetRecord = false;
+ }
+
+ public QueryDataSet getQueryDataSet() {
+ hasLimit = plan.hasLimit();
+ for (ShowTimeSeriesResult result : timeseriesList) {
+ RowRecord record = new RowRecord(0);
+ updateRecord(record, result.getName());
+ updateRecord(record, result.getAlias());
+ updateRecord(record, result.getSgName());
+ updateRecord(record, result.getDataType().toString());
+ updateRecord(record, result.getEncoding().toString());
+ updateRecord(record, result.getCompressor().toString());
+ updateRecord(record, result.getTag());
+ updateRecord(record, result.getAttribute());
+ putRecord(record);
+ }
+ return this;
+ }
+
+ public List<RowRecord> transferShowTimeSeriesResultToRecordList(
+ List<ShowTimeSeriesResult> timeseriesList) {
+ List<RowRecord> records = new ArrayList<>();
+ for (ShowTimeSeriesResult result : timeseriesList) {
+ RowRecord record = new RowRecord(0);
+ updateRecord(record, result.getName());
+ updateRecord(record, result.getAlias());
+ updateRecord(record, result.getSgName());
+ updateRecord(record, result.getDataType().toString());
+ updateRecord(record, result.getEncoding().toString());
+ updateRecord(record, result.getCompressor().toString());
+ updateRecord(record, result.getTag());
+ updateRecord(record, result.getAttribute());
+ records.add(record);
+ }
+ return records;
+ }
+
+ private void updateRecord(RowRecord record, Map<String, String> map) {
+ String text = map.entrySet().stream()
+ .map(e -> "\"" + e.getKey() + "\"" + ":" + "\"" + e.getValue() + "\"")
+ .collect(Collectors.joining(","));
+
+ updateRecord(record, text.length() == 0 ? null : "{" + text + "}");
+ }
+
+ private void updateRecord(RowRecord record, String s) {
+ if (s == null) {
+ record.addField(null);
+ return;
+ }
+ Field field = new Field(TSDataType.TEXT);
+ field.setBinaryV(new Binary(s));
+ record.addField(field);
}
@Override
protected boolean hasNextWithoutConstraint() throws IOException {
+ if (!hasSetRecord) {
Review comment:
i think that this code can be optimizing:
1. Take the data directly from the `MManager` and initialize it in the
`constructor`
2. if the total amount of data is less than the `fetchSize`, which means
there is no more data, reducing the access to the `MManager`.
> when hasLimit = false, limit was means fetchSize
3. if `index == result.size()== fetchSize`, get data from `MManager` again.
##########
File path:
server/src/main/java/org/apache/iotdb/db/query/dataset/ShowTimeseriesDataSet.java
##########
@@ -19,44 +19,123 @@
package org.apache.iotdb.db.query.dataset;
-import static
org.apache.iotdb.db.utils.QueryUtils.transferShowTimeSeriesResultToRecordList;
-
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_ATTRIBUTE;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_STORAGE_GROUP;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TAG;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES;
+import static org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ALIAS;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_COMPRESSION;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_DATATYPE;
+import static
org.apache.iotdb.db.conf.IoTDBConstant.COLUMN_TIMESERIES_ENCODING;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
import org.apache.iotdb.db.exception.metadata.MetadataException;
import org.apache.iotdb.db.metadata.MManager;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.physical.sys.ShowTimeSeriesPlan;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
+import org.apache.iotdb.tsfile.read.common.Field;
import org.apache.iotdb.tsfile.read.common.Path;
import org.apache.iotdb.tsfile.read.common.RowRecord;
import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet;
+import org.apache.iotdb.tsfile.utils.Binary;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ShowTimeseriesDataSet extends QueryDataSet {
private static final Logger logger =
LoggerFactory.getLogger(ShowTimeseriesDataSet.class);
-
private final ShowTimeSeriesPlan plan;
private List<RowRecord> result = new ArrayList<>();
private int index = 0;
private QueryContext context;
+ private List<ShowTimeSeriesResult> timeseriesList;
+ private boolean hasSetRecord;
public boolean hasLimit = true;
- public ShowTimeseriesDataSet(List<PartialPath> paths, List<TSDataType>
dataTypes,
- ShowTimeSeriesPlan showTimeSeriesPlan, QueryContext context) {
- super(new ArrayList<>(paths), dataTypes);
+ private static Path[] resourcePaths = {new PartialPath(COLUMN_TIMESERIES,
false),
+ new PartialPath(COLUMN_TIMESERIES_ALIAS, false), new
PartialPath(COLUMN_STORAGE_GROUP, false),
+ new PartialPath(COLUMN_TIMESERIES_DATATYPE, false), new
PartialPath(COLUMN_TIMESERIES_ENCODING, false),
+ new PartialPath(COLUMN_TIMESERIES_COMPRESSION, false), new
PartialPath(COLUMN_TAG, false),
+ new PartialPath(COLUMN_ATTRIBUTE, false)};
+ private static TSDataType[] resourceTypes = {TSDataType.TEXT,
TSDataType.TEXT, TSDataType.TEXT,
+ TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT, TSDataType.TEXT,
TSDataType.TEXT};
+
+ public ShowTimeseriesDataSet(ShowTimeSeriesPlan showTimeSeriesPlan,
QueryContext context,
+ List<ShowTimeSeriesResult> timeseriesList) {
+ super(Arrays.asList(resourcePaths), Arrays.asList(resourceTypes));
this.plan = showTimeSeriesPlan;
this.context = context;
+ this.timeseriesList = timeseriesList;
+ this.hasSetRecord = false;
+ }
+
+ public QueryDataSet getQueryDataSet() {
+ hasLimit = plan.hasLimit();
+ for (ShowTimeSeriesResult result : timeseriesList) {
+ RowRecord record = new RowRecord(0);
+ updateRecord(record, result.getName());
+ updateRecord(record, result.getAlias());
+ updateRecord(record, result.getSgName());
+ updateRecord(record, result.getDataType().toString());
+ updateRecord(record, result.getEncoding().toString());
+ updateRecord(record, result.getCompressor().toString());
+ updateRecord(record, result.getTag());
+ updateRecord(record, result.getAttribute());
+ putRecord(record);
+ }
+ return this;
+ }
+
+ public List<RowRecord> transferShowTimeSeriesResultToRecordList(
+ List<ShowTimeSeriesResult> timeseriesList) {
+ List<RowRecord> records = new ArrayList<>();
+ for (ShowTimeSeriesResult result : timeseriesList) {
+ RowRecord record = new RowRecord(0);
+ updateRecord(record, result.getName());
+ updateRecord(record, result.getAlias());
+ updateRecord(record, result.getSgName());
+ updateRecord(record, result.getDataType().toString());
+ updateRecord(record, result.getEncoding().toString());
+ updateRecord(record, result.getCompressor().toString());
+ updateRecord(record, result.getTag());
+ updateRecord(record, result.getAttribute());
+ records.add(record);
+ }
+ return records;
+ }
+
+ private void updateRecord(RowRecord record, Map<String, String> map) {
+ String text = map.entrySet().stream()
+ .map(e -> "\"" + e.getKey() + "\"" + ":" + "\"" + e.getValue() + "\"")
+ .collect(Collectors.joining(","));
+
+ updateRecord(record, text.length() == 0 ? null : "{" + text + "}");
+ }
+
+ private void updateRecord(RowRecord record, String s) {
Review comment:
`putRecord` method should also be modified to `private`
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