sui6666666 commented on issue #30818:
URL:
https://github.com/apache/shardingsphere/issues/30818#issuecomment-2044245843
CustomPreciseShardingAlgorithm.java
code is
```
public class CustomPreciseShardingAlgorithm implements
StandardShardingAlgorithm<Long> {
private static List<ShardingRangeConfig> configs = new ArrayList<>();
static {
ShardingRangeConfig config = new ShardingRangeConfig();
config.setStart(0);
config.setEnd(10);
config.setDatasourceList(Arrays.asList("ds0", "ds1"));
configs.add(config);
config = new ShardingRangeConfig();
config.setStart(11);
config.setEnd(20);
config.setDatasourceList(Arrays.asList("dss0", "dss1"));
configs.add(config);
}
@Override
public Collection<String> doSharding(Collection<String> collection,
RangeShardingValue<Long> rangeShardingValue) {
return null;
}
@Override
public String doSharding(Collection<String> collection,
PreciseShardingValue<Long> preciseShardingValue) {
Optional<ShardingRangeConfig> configOptional =
configs.stream().filter(
c -> preciseShardingValue.getValue() >=
c.getStart() && preciseShardingValue.getValue() <= c.getEnd()).findFirst();
if (configOptional.isPresent()) {
ShardingRangeConfig rangeConfig = configOptional.get();
for (String ds : rangeConfig.getDatasourceList()) {
if (ds.endsWith(preciseShardingValue.getValue()
% 2 + "")) {
System.err.println(ds);
return ds;
}
}
}
System.err.println("发生异常");
throw new IllegalArgumentException();
}
@Override
public Properties getProps() {
return null;
}
@Override
public void init(Properties properties) {
}
```
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
