Examples with DatabaseShardingStrategy com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy used on opensource projects

Example 11 with DatabaseShardingStrategy

use of com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy in project sharding-jdbc by dangdangdotcom.

the class ShardingRuleBuilder method build.

/**
     * 构建分片规则.
     * 
     * @return 分片规则对象
     */
public ShardingRule build() {
    DataSourceRule dataSourceRule = buildDataSourceRule();
    Collection<TableRule> tableRules = buildTableRules(dataSourceRule);
    com.dangdang.ddframe.rdb.sharding.api.rule.ShardingRule.ShardingRuleBuilder shardingRuleBuilder = ShardingRule.builder().dataSourceRule(dataSourceRule);
    if (!Strings.isNullOrEmpty(shardingRuleConfig.getIdGeneratorClass())) {
        shardingRuleBuilder.idGenerator(loadClass(shardingRuleConfig.getIdGeneratorClass(), IdGenerator.class));
    }
    return shardingRuleBuilder.tableRules(tableRules).bindingTableRules(buildBindingTableRules(tableRules)).databaseShardingStrategy(buildShardingStrategy(shardingRuleConfig.getDefaultDatabaseStrategy(), DatabaseShardingStrategy.class)).tableShardingStrategy(buildShardingStrategy(shardingRuleConfig.getDefaultTableStrategy(), TableShardingStrategy.class)).build();
}

Example 12 with DatabaseShardingStrategy

use of com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy in project sharding-jdbc by dangdangdotcom.

the class ShardingRuleBuilder method buildShardingAlgorithmClassName.

@SuppressWarnings("unchecked")
private <T extends ShardingStrategy> T buildShardingAlgorithmClassName(final List<String> shardingColumns, final String algorithmClassName, final Class<T> returnClass) {
    ShardingAlgorithm shardingAlgorithm;
    try {
        shardingAlgorithm = (ShardingAlgorithm) Class.forName(algorithmClassName).newInstance();
    } catch (final InstantiationException | IllegalAccessException | ClassNotFoundException ex) {
        throw new IllegalArgumentException(ex);
    }
    Preconditions.checkState(shardingAlgorithm instanceof SingleKeyShardingAlgorithm || shardingAlgorithm instanceof MultipleKeysShardingAlgorithm, "Sharding-JDBC: algorithmClassName is illegal");
    if (shardingAlgorithm instanceof SingleKeyShardingAlgorithm) {
        Preconditions.checkArgument(1 == shardingColumns.size(), "Sharding-JDBC: SingleKeyShardingAlgorithm must have only ONE sharding column");
        return returnClass.isAssignableFrom(DatabaseShardingStrategy.class) ? (T) new DatabaseShardingStrategy(shardingColumns.get(0), (SingleKeyDatabaseShardingAlgorithm<?>) shardingAlgorithm) : (T) new TableShardingStrategy(shardingColumns.get(0), (SingleKeyTableShardingAlgorithm<?>) shardingAlgorithm);
    }
    return returnClass.isAssignableFrom(DatabaseShardingStrategy.class) ? (T) new DatabaseShardingStrategy(shardingColumns, (MultipleKeysDatabaseShardingAlgorithm) shardingAlgorithm) : (T) new TableShardingStrategy(shardingColumns, (MultipleKeysTableShardingAlgorithm) shardingAlgorithm);
}

Example 13 with DatabaseShardingStrategy

use of com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy in project sharding-jdbc by dangdangdotcom.

the class AbstractRoutingDatabaseOnlyTest method initDataSource.

protected ShardingDataSource initDataSource() {
    DataSourceRule dataSourceRule = new DataSourceRule(createDataSourceMap("dataSource_%s"));
    ShardingRule shardingRule = ShardingRule.builder().dataSourceRule(dataSourceRule).databaseShardingStrategy(new DatabaseShardingStrategy(new NoneKeyModuloDatabaseShardingAlgorithm())).build();
    return new ShardingDataSource(shardingRule);
}

Example 14 with DatabaseShardingStrategy

use of com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy in project sharding-jdbc by dangdangdotcom.

the class AbstractShardingDataBasesOnlyHintDBUnitTest method initDataSource.

ShardingDataSource initDataSource() {
    DataSourceRule dataSourceRule = new DataSourceRule(createDataSourceMap("dataSource_%s"));
    TableRule orderTableRule = TableRule.builder("t_order").dataSourceRule(dataSourceRule).build();
    TableRule orderItemTableRule = TableRule.builder("t_order_item").dataSourceRule(dataSourceRule).build();
    ShardingRule shardingRule = ShardingRule.builder().dataSourceRule(dataSourceRule).tableRules(Lists.newArrayList(orderTableRule, orderItemTableRule)).bindingTableRules(Collections.singletonList(new BindingTableRule(Arrays.asList(orderTableRule, orderItemTableRule)))).databaseShardingStrategy(new DatabaseShardingStrategy(Collections.singletonList("user_id"), new MultipleKeysModuloDatabaseShardingAlgorithm())).tableShardingStrategy(new TableShardingStrategy(Collections.singletonList("order_id"), new NoneTableShardingAlgorithm())).build();
    return new ShardingDataSource(shardingRule);
}

Example 15 with DatabaseShardingStrategy

use of com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy in project sharding-jdbc by dangdangdotcom.

the class AbstractShardingTablesOnlyDBUnitTest method getShardingDataSource.

protected final ShardingDataSource getShardingDataSource() {
    if (null != shardingDataSource && !isShutdown) {
        return shardingDataSource;
    }
    isShutdown = false;
    DataSourceRule dataSourceRule = new DataSourceRule(createDataSourceMap("dataSource_%s"));
    TableRule orderTableRule = TableRule.builder("t_order").actualTables(Arrays.asList("t_order_0", "t_order_1", "t_order_2", "t_order_3", "t_order_4", "t_order_5", "t_order_6", "t_order_7", "t_order_8", "t_order_9")).dataSourceRule(dataSourceRule).build();
    TableRule orderItemTableRule = TableRule.builder("t_order_item").actualTables(Arrays.asList("t_order_item_0", "t_order_item_1", "t_order_item_2", "t_order_item_3", "t_order_item_4", "t_order_item_5", "t_order_item_6", "t_order_item_7", "t_order_item_8", "t_order_item_9")).dataSourceRule(dataSourceRule).build();
    ShardingRule shardingRule = ShardingRule.builder().dataSourceRule(dataSourceRule).tableRules(Arrays.asList(orderTableRule, orderItemTableRule)).bindingTableRules(Collections.singletonList(new BindingTableRule(Arrays.asList(orderTableRule, orderItemTableRule)))).databaseShardingStrategy(new DatabaseShardingStrategy("user_id", new NoneDatabaseShardingAlgorithm())).tableShardingStrategy(new TableShardingStrategy("order_id", new SingleKeyModuloTableShardingAlgorithm())).build();
    shardingDataSource = new ShardingDataSource(shardingRule);
    return shardingDataSource;
}