how to use RangeShardingAlgorithm with PreciseShardingAlgorithm

[naah69]

I use sharding-jdbc-spring-boot-starter 3.0.0.M1
i can't find relevent document on the website.
i try some times

but i can't enter implementation Class of RangeShardingAlgorithm.it will enter implementation Class of PreciseShardingAlgorithm.

please tell me how to use it,or give me a demo
this is my config and my code;

yml

config:
sharding:
default-database-strategy:
standard:
range-algorithm-class-name: shardingsphere.demo.strategy.NaahRangeShardingAlgorithm
precise-algorithm-class-name: shardingsphere.demo.strategy.HashCodePreciseShardingAlgorithm
sharding-column: user_id

RangeShardingAlgorithm

public class NaahRangeShardingAlgorithm implements RangeShardingAlgorithm {

private final Logger logger = LoggerFactory.getLogger(NaahRangeShardingAlgorithm.class);

public NaahRangeShardingAlgorithm() {
}


@Override
public Collection<String> doSharding(Collection availableTargetNames, RangeShardingValue shardingValue) {
    logger.info("Range availableTargetNames:" + JSON.toJSONString(availableTargetNames) + ",shardingValue:" + JSON.toJSONString(shardingValue));
    return null;
}

}

PreciseShardingAlgorithm

public class HashCodePreciseShardingAlgorithm implements PreciseShardingAlgorithm {

private final Logger logger = LoggerFactory.getLogger(HashCodePreciseShardingAlgorithm.class);

@Override
public String doSharding(Collection<String> availableTargetNames, PreciseShardingValue<Long> shardingValue) {
    logger.info("availableTargetNames:" + JSON.toJSONString(availableTargetNames) + ",preciseShardingValue:" + JSON.toJSONString(shardingValue));
    //通过hashcode取模
    int num= (shardingValue.getValue()+"").hashCode()%availableTargetNames.size();
    String[] list = availableTargetNames.toArray(new String[availableTargetNames.size()]);
    if(num<=availableTargetNames.size()){
        return list[num];
    }
    return null;
}

}

[tuohai666]

I'll add an example for RangeShardingAlgorithm later.

[naah69]

i had solved that problem.
but i have a new problem.
Data sharding and Read-write splitting how to use together.
i find few document and demo online.i will upload my demo after that i study it.
can u Add me Wechat?
WeChat:278567949

[terrymanu]

add example via apache/shardingsphere-example#69