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add to set sharding value using hint . Use HintShardingValueManger to…
… set hint
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166 changes: 166 additions & 0 deletions
166
...bc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/api/HintShardingValueManager.java
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| /** | ||
| * Copyright 1999-2015 dangdang.com. | ||
| * <p> | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * </p> | ||
| */ | ||
|
|
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| package com.dangdang.ddframe.rdb.sharding.api; | ||
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|
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| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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|
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| import com.dangdang.ddframe.rdb.sharding.exception.ShardingJdbcException; | ||
| import com.dangdang.ddframe.rdb.sharding.parser.result.router.Condition; | ||
| import com.dangdang.ddframe.rdb.sharding.router.single.SingleRouterUtil; | ||
| import com.google.common.base.Optional; | ||
| import com.google.common.base.Preconditions; | ||
| import com.google.common.base.Strings; | ||
| import lombok.AccessLevel; | ||
| import lombok.AllArgsConstructor; | ||
|
|
||
| /** | ||
| * 通过线索传递分片值的管理器. | ||
| * | ||
| * @author gaohongtao | ||
| */ | ||
| @AllArgsConstructor(access = AccessLevel.PRIVATE) | ||
| public final class HintShardingValueManager { | ||
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| private static final ThreadLocal<ShardingValueContainer> SHARING_VALUE_CONTAINER = new ThreadLocal<>(); | ||
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| /** | ||
| * 初始化容器. | ||
| */ | ||
| public static void init() { | ||
| if (null != SHARING_VALUE_CONTAINER.get()) { | ||
| throw new ShardingJdbcException("CAN NOT register sharding value repeatedly"); | ||
| } | ||
| SHARING_VALUE_CONTAINER.set(new ShardingValueContainer()); | ||
| } | ||
|
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| /** | ||
| * 注册分库分片值. | ||
| * | ||
| * @param logicTable 逻辑表明 | ||
| * @param shardingColumn 分库键 | ||
| * @param values 分库值 | ||
| */ | ||
| public static void registerShardingValueOfDatabase(final String logicTable, final String shardingColumn, final Comparable<?>... values) { | ||
| registerShardingValueOfDatabase(logicTable, shardingColumn, Condition.BinaryOperator.EQUAL, values); | ||
| } | ||
|
|
||
| /** | ||
| * 注册分库分片值. | ||
| * | ||
| * @param logicTable 逻辑表明 | ||
| * @param shardingColumn 分库键 | ||
| * @param binaryOperator 分库操作符 | ||
| * @param values 分库值 | ||
| */ | ||
| public static void registerShardingValueOfDatabase(final String logicTable, final String shardingColumn, final Condition.BinaryOperator binaryOperator, final Comparable<?>... values) { | ||
| if (null == SHARING_VALUE_CONTAINER.get()) { | ||
| throw new ShardingJdbcException("Please first invoke HintShardingValueManager.init()"); | ||
| } | ||
| registerShardingValue(SHARING_VALUE_CONTAINER.get().databaseShardingValues, logicTable, shardingColumn, binaryOperator, values); | ||
| } | ||
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| /** | ||
| * 获取分库键值. | ||
| * | ||
| * @param logicTable 逻辑表名 | ||
| * @return 分库键值 | ||
| */ | ||
| public static Optional<List<ShardingValue<?>>> getShardingValueOfDatabase(final String logicTable) { | ||
| if (null == SHARING_VALUE_CONTAINER.get()) { | ||
| return Optional.absent(); | ||
| } | ||
| return Optional.fromNullable(SHARING_VALUE_CONTAINER.get().databaseShardingValues.get(logicTable)); | ||
| } | ||
|
|
||
| /** | ||
| * 注册分表分片值. | ||
| * | ||
| * @param logicTable 逻辑表明 | ||
| * @param shardingColumn 分库键 | ||
| * @param values 分库值 | ||
| */ | ||
| public static void registerShardingValueOfTable(final String logicTable, final String shardingColumn, final Comparable<?>... values) { | ||
| registerShardingValueOfTable(logicTable, shardingColumn, Condition.BinaryOperator.EQUAL, values); | ||
| } | ||
|
|
||
| /** | ||
| * 注册分表分片值. | ||
| * | ||
| * @param logicTable 逻辑表明 | ||
| * @param shardingColumn 分库键 | ||
| * @param binaryOperator 分库操作符 | ||
| * @param values 分库值 | ||
| */ | ||
| public static void registerShardingValueOfTable(final String logicTable, final String shardingColumn, final Condition.BinaryOperator binaryOperator, final Comparable<?>... values) { | ||
| if (null == SHARING_VALUE_CONTAINER.get()) { | ||
| throw new ShardingJdbcException("Please first invoke HintShardingValueManager.init()"); | ||
| } | ||
| registerShardingValue(SHARING_VALUE_CONTAINER.get().tableShardingValues, logicTable, shardingColumn, binaryOperator, values); | ||
| } | ||
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| /** | ||
| * 获取分表键值. | ||
| * | ||
| * @param logicTable 逻辑表名 | ||
| * @return 分库键值 | ||
| */ | ||
| public static Optional<List<ShardingValue<?>>> getShardingValueOfTable(final String logicTable) { | ||
| if (null == SHARING_VALUE_CONTAINER.get()) { | ||
| return Optional.absent(); | ||
| } | ||
| return Optional.fromNullable(SHARING_VALUE_CONTAINER.get().tableShardingValues.get(logicTable)); | ||
| } | ||
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| private static void registerShardingValue(final Map<String, List<ShardingValue<?>>> container, final String logicTable, | ||
| final String shardingColumn, final Condition.BinaryOperator binaryOperator, final Comparable<?>... values) { | ||
| Preconditions.checkArgument(!Strings.isNullOrEmpty(logicTable)); | ||
| Preconditions.checkArgument(!Strings.isNullOrEmpty(shardingColumn)); | ||
| Preconditions.checkArgument(null != values && values.length > 0); | ||
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| List<ShardingValue<?>> shardingValues; | ||
| if (container.containsKey(logicTable)) { | ||
| shardingValues = container.get(logicTable); | ||
| } else { | ||
| shardingValues = new ArrayList<>(); | ||
| container.put(logicTable, shardingValues); | ||
| } | ||
| Condition condition = new Condition(new Condition.Column(shardingColumn, logicTable), binaryOperator); | ||
| condition.getValues().addAll(Arrays.asList(values)); | ||
| shardingValues.add(SingleRouterUtil.convertConditionToShardingValue(condition)); | ||
| } | ||
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| /** | ||
| * 清理容器. | ||
| * | ||
| */ | ||
| public static void clear() { | ||
| SHARING_VALUE_CONTAINER.remove(); | ||
| } | ||
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| private static class ShardingValueContainer { | ||
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| private final Map<String, List<ShardingValue<?>>> databaseShardingValues = new HashMap<>(); | ||
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| private final Map<String, List<ShardingValue<?>>> tableShardingValues = new HashMap<>(); | ||
| } | ||
|
|
||
| } |
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27 changes: 27 additions & 0 deletions
27
...rc/main/java/com/dangdang/ddframe/rdb/sharding/parser/result/router/SQLStatementType.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| /** | ||
| * Copyright 1999-2015 dangdang.com. | ||
| * <p> | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * </p> | ||
| */ | ||
|
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| package com.dangdang.ddframe.rdb.sharding.parser.result.router; | ||
|
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| /** | ||
| * SQL语句类型. | ||
| * | ||
| * @author gaohongtao | ||
| */ | ||
| public enum SQLStatementType { | ||
| INSERT, DELETE, UPDATE, SELECT | ||
| } |
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