CheerwayRen commented on issue #8038:
URL: https://github.com/apache/shardingsphere/issues/8038#issuecomment-856397676
The query statement is the same as before，
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@Bean
@Primary
public DataSource multipleDataSource(@Qualifier("base") DataSource base,
@Qualifier("aliyun") DataSource aliyun) throws SQLException {
Map<String, DataSource> targetDataSources = new HashMap<>(2);
targetDataSources.put(DataSourceEnum.BASE.getValue(), base);
targetDataSources.put(DataSourceEnum.ALIYUN.getValue(), aliyun);
// 配置 day_report 表规则
ShardingTableRuleConfiguration dayReportRuleConfiguration = new
ShardingTableRuleConfiguration("mng_sale_amount_day",
"base.mng_sale_amount_day_$->{2011..2030}0$->{1..9},base.mng_sale_amount_day_$->{2011..2030}1$->{0..2},aliyun.mng_sale_amount_day_$->{2011..2030}0$->{1..9},aliyun.mng_sale_amount_day_$->{2011..2030}1$->{0..2}");
// 配置分表规则 第一个精确，第二个范围
dayReportRuleConfiguration.setTableShardingStrategy(new
StandardShardingStrategyConfiguration("SALE_YMD",
"dayReportTableShardingAlgorithm"));
// Sharding全局配置
//多表的话,就配置多个就好了
ShardingRuleConfiguration shardingRuleConfiguration = new
ShardingRuleConfiguration();
shardingRuleConfiguration.getTables().add(dayReportRuleConfiguration);
//分库规则配置
shardingRuleConfiguration.getShardingAlgorithms().put("dayReportTableShardingAlgorithm",
new ShardingSphereAlgorithmConfiguration("dayReportRule", new Properties()));
// 创建数据源
DataSource dataSource =
ShardingSphereDataSourceFactory.createDataSource(targetDataSources,
Collections.singleton(shardingRuleConfiguration), new Properties());
return dataSource;
}
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@Slf4j
public class DayReportPreciseShardingAlgorithm implements
StandardShardingAlgorithm<String> {
private static String month_format = "yyyyMM";
private Properties props = new Properties();
//精准匹配 in 和 =
@Override
public String doSharding(Collection<String> tableNames,
PreciseShardingValue<String> shardingValue) {
Date reportDay = DateUtil.parse(shardingValue.getValue(),
"yyyyMMdd");
String reportMonth = DateUtil.format(reportDay, month_format);
return "mng_sale_amount_day_" + reportMonth;
}
//范围匹配 between
@Override
public Collection<String> doSharding(Collection<String> collection,
RangeShardingValue<String> rangeShardingValue) {
Range<String> reportDayRange = rangeShardingValue.getValueRange();
//最小值
String lowerDate = reportDayRange.lowerEndpoint();
if (StringUtils.isEmpty(lowerDate)) {
//数据从2011年开始
lowerDate = "201101";
} else {
lowerDate = lowerDate.substring(0, 6);
}
//最大值
String upperDate = reportDayRange.upperEndpoint();
if (StringUtils.isEmpty(upperDate)) {
//数据到当前时间结束
upperDate = DateUtil.format(new Date(), month_format);
} else {
upperDate = upperDate.substring(0, 6);
}
return getMonthTableEnums("mng_sale_amount_day_",
DateUtil.parse(lowerDate, month_format), DateUtil.parse(upperDate,
month_format));
}
private List<String> getMonthTableEnums(String table, DateTime start,
DateTime end) {
List<String> list = new ArrayList<>();
while (!start.isAfter(end)) {
list.add(table + DateUtil.format(start, month_format));
start.offset(DateField.MONTH, 1);
}
return list;
}
@Override
public void init() {
log.info("init day report rule");
}
@Override
public String getType() {
return "dayReportRule";
}
@Override
public Properties getProps() {
return props;
}
@Override
public void setProps(Properties props) {
this.props = props;
}
}
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