docs/src/UserGuide/latest/QuickStart/QuickStart.md

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# Quick Start

## Sample Data

![](https://alioss.timecho.com/docs/img/2024050517481.png)

## Installation Method

Add the following content to the `dependencies` in `pom.xml`

```shell
<dependency>
    <groupId>org.apache.tsfile</groupId>
    <artifactId>tsfile</artifactId>
    <version>1.1.0</version>
</dependency>
```

## Writing Process

### Construct TsFileWriter

```shell
File f = new File("test.tsfile");
TsFileWriter tsFileWriter = new TsFileWriter(f);
```

### Registration Time Series

```shell
List<MeasurementSchema> schema1 = new ArrayList<>();
schema1.add(new MeasurementSchema("voltage", TSDataType.FLOAT));
schema1.add(new MeasurementSchema("current", TSDataType.FLOAT));
tsFileWriter.registerTimeseries(new Path("Solar_panel_1"), schema1);

List<MeasurementSchema> schema2 = new ArrayList<>();
schema2.add(new MeasurementSchema("voltage", TSDataType.FLOAT));
schema2.add(new MeasurementSchema("current", TSDataType.FLOAT));
schema2.add(new MeasurementSchema("wind_speed", TSDataType.FLOAT));
tsFileWriter.registerTimeseries(new Path("Fan_1"), schema2);
```

### Write Data

```shell
TSRecord tsRecord = new TSRecord(1, "Solar_panel_1");
tsRecord.addTuple(DataPoint.getDataPoint(TSDataType.FLOAT, "voltage", 1.1f));
tsRecord.addTuple(DataPoint.getDataPoint(TSDataType.FLOAT, "current", 2.2f));
tsFileWriter.write(tsRecord);
```

### Close File

```shell
tsFileWriter.close();
```

### Sample Code

<https://github.com/apache/tsfile/blob/develop/java/examples/src/main/java/org/apache/tsfile/TsFileWriteWithTSRecord.java>

## Query Process

### Construct TsFileReader

```shell
TsFileSequenceReader reader = new TsFileSequenceReader(path);
TsFileReader tsFileReader = new TsFileReader(reader);
```

### Construct Query Request

```shell
ArrayList<Path> paths = new ArrayList<>();
paths.add(new Path("Solar_panel_1", "voltage",true));
paths.add(new Path("Solar_panel_1", "current",true));

IExpression timeFilter =
    BinaryExpression.and(
        new GlobalTimeExpression(TimeFilterApi.gtEq(4L)),
        new GlobalTimeExpression(TimeFilterApi.ltEq(10L)));

QueryExpression queryExpression = QueryExpression.create(paths, timeFilter);
```

### Query Data

```shell
QueryDataSet queryDataSet = tsFileReader.query(queryExpression);
while (queryDataSet.hasNext()) {
  queryDataSet.next();
}
```

### Close File

```shell
tsFileReader.close();
```

### Sample Code

<https://github.com/apache/tsfile/blob/develop/java/examples/src/main/java/org/apache/tsfile/TsFileRead.java>