| /* |
| * 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.infra.context.kernel; |
| |
| import org.apache.shardingsphere.infra.binder.statement.SQLStatementContext; |
| import org.apache.shardingsphere.infra.config.properties.ConfigurationProperties; |
| import org.apache.shardingsphere.infra.executor.sql.context.ExecutionContext; |
| import org.apache.shardingsphere.infra.executor.sql.context.ExecutionContextBuilder; |
| import org.apache.shardingsphere.infra.executor.sql.context.ExecutionUnit; |
| import org.apache.shardingsphere.infra.rewrite.SQLRewriteEntry; |
| import org.apache.shardingsphere.infra.rewrite.engine.result.SQLRewriteResult; |
| import org.apache.shardingsphere.infra.route.context.RouteContext; |
| import org.apache.shardingsphere.infra.route.engine.SQLRouteEngine; |
| import org.apache.shardingsphere.infra.rule.ShardingSphereRule; |
| import org.apache.shardingsphere.infra.schema.ShardingSphereSchema; |
| import org.apache.shardingsphere.infra.binder.LogicSQL; |
| |
| import java.util.Collection; |
| |
| /** |
| * Kernel processor. |
| */ |
| public final class KernelProcessor { |
| |
| /** |
| * Generate execution context. |
| * |
| * @param logicSQL logic SQL |
| * @param schema ShardingSphere schema |
| * @param props configuration properties |
| * @return execution context |
| */ |
| public ExecutionContext generateExecutionContext(final LogicSQL logicSQL, final ShardingSphereSchema schema, final ConfigurationProperties props) { |
| Collection<ShardingSphereRule> rules = schema.getRules(); |
| SQLRouteEngine sqlRouteEngine = new SQLRouteEngine(rules, props); |
| SQLStatementContext<?> sqlStatementContext = logicSQL.getSqlStatementContext(); |
| RouteContext routeContext = sqlRouteEngine.route(logicSQL, schema); |
| SQLRewriteEntry rewriteEntry = new SQLRewriteEntry(schema.getMetaData().getSchemaMetaData().getConfiguredSchemaMetaData(), props, rules); |
| SQLRewriteResult rewriteResult = rewriteEntry.rewrite(logicSQL.getSql(), logicSQL.getParameters(), sqlStatementContext, routeContext); |
| Collection<ExecutionUnit> executionUnits = ExecutionContextBuilder.build(schema.getMetaData(), rewriteResult, sqlStatementContext); |
| return new ExecutionContext(sqlStatementContext, executionUnits, routeContext); |
| } |
| } |