Examples with ShardingStrategy org.sagacity.sqltoy.plugin.ShardingStrategy used on opensource projects

Example 1 with ShardingStrategy

use of org.sagacity.sqltoy.plugin.ShardingStrategy in project sagacity-sqltoy by chenrenfei.

the class ShardingUtils method getSharding.

/**
 * @todo 单个对象sharding策略处理,适用于load、save、update、delete单对象操作
 * @param sqlToyContext
 * @param entity
 * @param wrapIdValue
 * @param dataSource
 * @return
 * @throws Exception
 */
public static ShardingModel getSharding(SqlToyContext sqlToyContext, Serializable entity, boolean wrapIdValue, DataSource dataSource) throws Exception {
    ShardingModel shardingModel = new ShardingModel();
    shardingModel.setDataSource(dataSource);
    EntityMeta entityMeta = sqlToyContext.getEntityMeta(entity.getClass());
    // 主键值需要提前按照主键策略赋予(sequence 和assign模式的不会实际执行赋值)
    if (wrapIdValue)
        assignPK(sqlToyContext, entityMeta, entity);
    ShardingConfig shardingConfig = entityMeta.getShardingConfig();
    if (shardingConfig == null)
        return shardingModel;
    ShardingStrategy shardingStrategy;
    ShardingStrategyConfig strategyConfig;
    // 分库策略处理
    if (shardingConfig.getShardingDBStrategy() != null) {
        strategyConfig = shardingConfig.getShardingDBStrategy();
        shardingStrategy = sqlToyContext.getShardingStrategy(strategyConfig.getName());
        if (shardingStrategy == null)
            throw new Exception("POJO 对象:" + entity.getClass().getName() + " Sharding DB Strategy:" + strategyConfig.getName() + " 未定义,请检查!");
        IgnoreCaseLinkedMap<String, Object> valueMap = hashParams(strategyConfig.getAliasNames(), BeanUtil.reflectBeanToAry(entity, strategyConfig.getFields(), null, null));
        ShardingDBModel dbModel = shardingStrategy.getShardingDB(sqlToyContext, entity.getClass(), entityMeta.getSchemaTable(), strategyConfig.getDecisionType(), valueMap);
        shardingModel.setDataSourceName(dbModel.getDataSourceName());
        if (dbModel.getDataSource() == null)
            shardingModel.setDataSource(sqlToyContext.getDataSource(dbModel.getDataSourceName()));
        else
            shardingModel.setDataSource(dbModel.getDataSource());
    }
    // 分表策略
    if (shardingConfig.getShardingTableStrategy() != null) {
        strategyConfig = shardingConfig.getShardingTableStrategy();
        shardingStrategy = sqlToyContext.getShardingStrategy(strategyConfig.getName());
        if (shardingStrategy == null)
            throw new Exception("POJO 对象:" + entity.getClass().getName() + " Sharding Table Strategy:" + strategyConfig.getName() + " 未定义,请检查!");
        IgnoreCaseLinkedMap<String, Object> valueMap = hashParams(strategyConfig.getAliasNames(), BeanUtil.reflectBeanToAry(entity, strategyConfig.getFields(), null, null));
        String tableName = shardingStrategy.getShardingTable(sqlToyContext, entity.getClass(), entityMeta.getSchemaTable(), strategyConfig.getDecisionType(), valueMap);
        if (StringUtil.isNotBlank(tableName))
            shardingModel.setTableName(tableName);
    }
    return shardingModel;
}

Example 2 with ShardingStrategy

use of org.sagacity.sqltoy.plugin.ShardingStrategy in project sagacity-sqltoy by chenrenfei.

the class ShardingUtils method groupShardings.

/**
 * @todo 批量sharding策略处理
 * @param sqlToyContext
 * @param entities
 * @param entityMeta
 * @param dataSource
 * @return
 * @throws Exception
 */
public static Collection<ShardingGroupModel> groupShardings(SqlToyContext sqlToyContext, List<?> entities, EntityMeta entityMeta, DataSource dataSource) throws Exception {
    ShardingConfig shardingConfig = entityMeta.getShardingConfig();
    ShardingModel shardingModel = null;
    // 没有sharding配置，则作为单个分组返回
    if (shardingConfig == null) {
        Collection<ShardingGroupModel> result = new ArrayList<ShardingGroupModel>();
        ShardingGroupModel model = new ShardingGroupModel();
        shardingModel = new ShardingModel();
        shardingModel.setDataSource(dataSource);
        model.setShardingModel(shardingModel);
        model.setEntities(entities);
        result.add(model);
        return result;
    }
    Class entityClass = entities.get(0).getClass();
    String entityTable = entityMeta.getSchemaTable();
    // 分库
    boolean hasDB = false;
    ShardingStrategy dbStrategy = null;
    List<Object[]> shardingDBValues = null;
    ShardingStrategyConfig dbConfig = shardingConfig.getShardingDBStrategy();
    if (dbConfig != null) {
        hasDB = true;
        dbStrategy = sqlToyContext.getShardingStrategy(dbConfig.getName());
        if (dbStrategy == null)
            throw new Exception("POJO 对象:" + entityClass.getName() + " Sharding DB Strategy:" + dbConfig.getName() + " 未定义,请检查!");
        shardingDBValues = BeanUtil.reflectBeansToInnerAry(entities, dbConfig.getFields(), null, null, false, 0);
    }
    // 分表
    boolean hasTable = false;
    ShardingStrategy tableStrategy = null;
    ShardingStrategyConfig tableConfig = shardingConfig.getShardingTableStrategy();
    List<Object[]> shardingTableValues = null;
    if (tableConfig != null) {
        hasTable = true;
        tableStrategy = sqlToyContext.getShardingStrategy(tableConfig.getName());
        if (tableStrategy == null)
            throw new Exception("POJO 对象:" + entityClass.getName() + " Sharding Table Strategy:" + tableConfig.getName() + " 未定义,请检查!");
        shardingTableValues = BeanUtil.reflectBeansToInnerAry(entities, tableConfig.getFields(), null, null, false, 0);
    }
    Map<String, ShardingGroupModel> shardingGroupMaps = new HashMap<String, ShardingGroupModel>();
    IgnoreCaseLinkedMap<String, Object> valueMap;
    ShardingDBModel shardingDBModel = null;
    // 数据分组key(dataSourceName+tableName)
    String dataGroupKey;
    String tableName = null;
    String dataSourceName = null;
    for (int i = 0; i < entities.size(); i++) {
        // 分库
        if (hasDB) {
            valueMap = hashParams(dbConfig.getAliasNames(), shardingDBValues.get(i));
            shardingDBModel = dbStrategy.getShardingDB(sqlToyContext, entityClass, entityTable, dbConfig.getDecisionType(), valueMap);
            dataSourceName = shardingDBModel.getDataSourceName();
        }
        // 分表
        if (hasTable) {
            valueMap = hashParams(tableConfig.getAliasNames(), shardingTableValues.get(i));
            tableName = tableStrategy.getShardingTable(sqlToyContext, entityClass, entityTable, tableConfig.getDecisionType(), valueMap);
        }
        dataGroupKey = dataSourceName + tableName;
        // 归并到相同分组
        if (shardingGroupMaps.containsKey(dataGroupKey)) {
            shardingGroupMaps.get(dataGroupKey).getEntities().add(entities.get(i));
        } else {
            // 不同分组
            ShardingGroupModel groupModel = new ShardingGroupModel();
            groupModel.setKey(dataGroupKey);
            // 创建数据分组集合
            List items = new ArrayList();
            items.add(entities.get(i));
            groupModel.setEntities(items);
            shardingModel = new ShardingModel();
            // 分库,设置分组对应的数据库
            if (hasDB) {
                shardingModel.setDataSourceName(dataSourceName);
                if (shardingDBModel.getDataSource() == null)
                    shardingModel.setDataSource(sqlToyContext.getDataSource(shardingDBModel.getDataSourceName()));
                else
                    shardingModel.setDataSource(shardingDBModel.getDataSource());
            } else
                shardingModel.setDataSource(dataSource);
            // 分表,设置表名
            if (hasTable && StringUtil.isNotBlank(tableName))
                shardingModel.setTableName(tableName);
            groupModel.setShardingModel(shardingModel);
            shardingGroupMaps.put(dataGroupKey, groupModel);
        }
    }
    return shardingGroupMaps.values();
}

Example 3 with ShardingStrategy

use of org.sagacity.sqltoy.plugin.ShardingStrategy in project sagacity-sqltoy by chenrenfei.

the class ShardingUtils method getShardingDataSource.

/**
 * @todo 根据数据获取sharding对应的DataSource
 * @param sqlToyContext
 * @param sqlToyConfig
 * @param valueMap
 * @return
 */
private static DataSource getShardingDataSource(SqlToyContext sqlToyContext, SqlToyConfig sqlToyConfig, IgnoreCaseLinkedMap<String, Object> valueMap) {
    if (sqlToyConfig.getDataSourceShardingStragety() == null)
        return null;
    ShardingStrategy shardingStrategy = sqlToyContext.getShardingStrategy(sqlToyConfig.getDataSourceShardingStragety());
    if (shardingStrategy == null)
        return null;
    IgnoreCaseLinkedMap<String, Object> realDataMap = null;
    if (sqlToyConfig.getDataSourceShardingParams() != null) {
        realDataMap = new IgnoreCaseLinkedMap<String, Object>();
        for (int i = 0, n = sqlToyConfig.getDataSourceShardingParams().length; i < n; i++) {
            realDataMap.put(sqlToyConfig.getDataSourceShardingParamsAlias()[i], valueMap.get(sqlToyConfig.getDataSourceShardingParams()[i]));
        }
    } else
        realDataMap = valueMap;
    ShardingDBModel shardingDBModel = shardingStrategy.getShardingDB(sqlToyContext, null, sqlToyConfig.getId(), sqlToyConfig.getDataSourceShardingStrategyValue(), realDataMap);
    if (shardingDBModel.getDataSource() != null)
        return shardingDBModel.getDataSource();
    else
        return sqlToyContext.getDataSource(shardingDBModel.getDataSourceName());
}

Example 4 with ShardingStrategy

use of org.sagacity.sqltoy.plugin.ShardingStrategy in project sagacity-sqltoy by chenrenfei.

the class ShardingUtils method getShardingTables.

/**
 * @todo 获取sharding对应的表
 * @param sqlToyContext
 * @param sqlToyConfig
 * @param paramNames
 * @param paramValues
 * @return
 */
private static HashMap<String, String> getShardingTables(SqlToyContext sqlToyContext, SqlToyConfig sqlToyConfig, String[] paramNames, Object[] paramValues) {
    if (sqlToyConfig.getTablesShardings() == null)
        return null;
    IgnoreCaseLinkedMap<String, Object> valueMap = hashParams(paramNames, paramValues);
    HashMap<String, String> tableMap = new HashMap<String, String>();
    String[] tables;
    String table;
    String shardingTable;
    ShardingStrategy shardingStrategy;
    IgnoreCaseLinkedMap<String, Object> realDataMap = null;
    for (QueryShardingModel shardingModel : sqlToyConfig.getTablesShardings()) {
        shardingStrategy = sqlToyContext.getShardingStrategy(shardingModel.getStrategy());
        if (shardingStrategy != null) {
            tables = shardingModel.getTables();
            if (shardingModel.getParams() != null) {
                realDataMap = new IgnoreCaseLinkedMap<String, Object>();
                for (int i = 0, n = shardingModel.getParams().length; i < n; i++) {
                    realDataMap.put(shardingModel.getParamsAlias()[i], valueMap.get(shardingModel.getParams()[i]));
                }
            } else
                realDataMap = valueMap;
            for (int i = 0; i < tables.length; i++) {
                table = tables[i];
                shardingTable = shardingStrategy.getShardingTable(sqlToyContext, null, table, shardingModel.getStrategyValue(), realDataMap);
                if (null != shardingTable && !shardingTable.equalsIgnoreCase(table))
                    tableMap.put(table, shardingTable);
            }
        } else {
            System.err.println("sharding strategy:".concat(shardingModel.getStrategy()).concat(" don't exist,please check sharding config!"));
            logger.error("sharding strategy:{} don't exist,please check sharding config!", shardingModel.getStrategy());
        }
    }
    return tableMap;
}