TSV文件导出 (TsvSinkStreamOp)

Java 类名：com.alibaba.alink.operator.stream.sink.TsvSinkStreamOp
Python 类名：TsvSinkStreamOp

功能介绍

写Tsv文件，Tsv文件是以tab为分隔符

参数说明

| 名称 | 中文名称 | 描述 | 类型 | 是否必须？ | 取值范围 | 默认值 | | —- | —- | —- | —- | —- | —- | —- |

| filePath | 文件路径 | 文件路径 | String | ✓ | | |

| numFiles | 文件数目 | 文件数目 | Integer | | | 1 |

| overwriteSink | 是否覆写已有数据 | 是否覆写已有数据 | Boolean | | | false |

代码示例

Python 代码

from pyalink.alink import *
import pandas as pd
useLocalEnv(1)
df = pd.DataFrame([
                ["0L", "1L", 0.6],
                ["2L", "2L", 0.8],
                ["2L", "4L", 0.6],
                ["3L", "1L", 0.6],
                ["3L", "2L", 0.3],
                ["3L", "4L", 0.4]
        ])
source = StreamOperator.fromDataframe(df, schemaStr='uid string, iid string, label double')
filepath = "/tmp/abc.tsv"
tsvSink = TsvSinkStreamOp()\
    .setFilePath(filepath)\
    .setOverwriteSink(True)
source.link(tsvSink)
StreamOperator.execute()
tsvSource = TsvSourceStreamOp().setFilePath(filepath).setSchemaStr("f string");
tsvSource.print()
StreamOperator.execute()

Java 代码

import org.apache.flink.types.Row;
import com.alibaba.alink.operator.stream.StreamOperator;
import com.alibaba.alink.operator.stream.sink.TsvSinkStreamOp;
import com.alibaba.alink.operator.stream.source.MemSourceStreamOp;
import com.alibaba.alink.operator.stream.source.TsvSourceStreamOp;
import org.junit.Test;
import java.util.Arrays;
import java.util.List;
public class TsvSinkStreamOpTest {
    @Test
    public void testTsvSinkStreamOp() throws Exception {
        List <Row> df = Arrays.asList(
            Row.of("0L", "1L", 0.6),
            Row.of("2L", "2L", 0.8),
            Row.of("2L", "4L", 0.6),
            Row.of("3L", "1L", 0.6),
            Row.of("3L", "2L", 0.3),
            Row.of("3L", "4L", 0.4)
        );
        StreamOperator <?> source = new MemSourceStreamOp(df, "uid string, iid string, label double");
        String filepath = "/tmp/abc.tsv";
        StreamOperator <?> tsvSink = new TsvSinkStreamOp()
            .setFilePath(filepath)
            .setOverwriteSink(true);
        source.link(tsvSink);
        StreamOperator.execute();
        StreamOperator <?> tsvSource = new TsvSourceStreamOp().setFilePath(filepath).setSchemaStr("f string");
        tsvSource.print();
        StreamOperator.execute();
    }
}