strongduanmu commented on code in PR #22857:
URL: https://github.com/apache/shardingsphere/pull/22857#discussion_r1058869510
##########
features/sharding/core/src/main/java/org/apache/shardingsphere/sharding/route/engine/condition/engine/ShardingConditionEngine.java:
##########
@@ -21,11 +21,22 @@
import org.apache.shardingsphere.infra.binder.statement.SQLStatementContext;
import java.util.List;
+import
org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
+import org.apache.shardingsphere.infra.util.spi.type.required.RequiredSPI;
+import org.apache.shardingsphere.sharding.rule.ShardingRule;
/**
* Sharding condition engine.
*/
-public interface ShardingConditionEngine<T extends SQLStatementContext<?>> {
+public interface ShardingConditionEngine<T extends SQLStatementContext<?>>
extends RequiredSPI {
+
+ /**
+ * Initialize the sharding condition engine.
+ *
+ * @param rule sharding rule
+ * @param database sharding database
+ */
+ void init(ShardingRule rule, ShardingSphereDatabase database);
Review Comment:
Thank you for your explaination.
##########
features/sharding/core/src/main/java/org/apache/shardingsphere/sharding/route/engine/condition/engine/impl/DefaultShardingConditionEngine.java:
##########
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.shardingsphere.sharding.route.engine.condition.engine.impl;
+
+import java.util.List;
+
+import org.apache.shardingsphere.infra.binder.statement.SQLStatementContext;
+import
org.apache.shardingsphere.infra.binder.statement.dml.InsertStatementContext;
+import
org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
+import
org.apache.shardingsphere.sharding.route.engine.condition.ShardingCondition;
+import
org.apache.shardingsphere.sharding.route.engine.condition.engine.ShardingConditionEngine;
+import org.apache.shardingsphere.sharding.rule.ShardingRule;
+
+/**
+ * Default implementation of the sharding condition engine.
+ */
+public final class DefaultShardingConditionEngine implements
ShardingConditionEngine<SQLStatementContext<?>> {
+
+ private ShardingRule shardingRule;
+
+ private ShardingSphereDatabase database;
+
+ @Override
+ public void init(final ShardingRule shardingRule, final
ShardingSphereDatabase database) {
+ this.shardingRule = shardingRule;
+ this.database = database;
+ }
+
+ @Override
+ public List<ShardingCondition> createShardingConditions(final
SQLStatementContext<?> sqlStatementContext, final List<Object> parameters) {
Review Comment:
How can users use the customized ShardingConditionEngine? In addition,
should this SPI belong to TypedSPI or RequiredSPI?
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