net.wicp.tams.common.flink.connector.redis.mapper

接口 RedisMapper<T>

类型参数:

T - The type of the element handled by this RedisMapper

所有超级接口:

org.apache.flink.api.common.functions.Function, Serializable

所有已知实现类:

SetRedisMapper

public interface RedisMapper<T>
extends org.apache.flink.api.common.functions.Function, Serializable

Function that creates the description how the input data should be mapped to redis type.

Example:

private static class RedisTestMapper implements RedisMapper<Tuple2<String, String>> {
    public RedisDataTypeDescription getCommandDescription() {
        return new RedisDataTypeDescription(RedisCommand.PUBLISH);
    }
    public String getKeyFromData(Tuple2<String, String> data) {
        return data.f0;
    }
    public String getValueFromData(Tuple2<String, String> data) {
        return data.f1;
    }
}

方法概要

限定符和类型	方法和说明
RedisCommandDescription	getCommandDescription() Returns descriptor which defines data type.
String	getKeyFromData(T data) Extracts key from data.
String	getValueFromData(T data) Extracts value from data.

方法详细资料

getCommandDescription

RedisCommandDescription getCommandDescription()

Returns descriptor which defines data type.

返回:

data type descriptor

getKeyFromData

String getKeyFromData(T data)

Extracts key from data.

参数:

data - source data

返回:

key

getValueFromData

String getValueFromData(T data)

Extracts value from data.

参数:

data - source data

返回:

value