/*
 * 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.core.route;

import org.apache.shardingsphere.underlying.common.metadata.ShardingSphereMetaData;
import org.apache.shardingsphere.sql.parser.SQLParseEngine;
import org.apache.shardingsphere.sql.parser.sql.statement.SQLStatement;
import org.apache.shardingsphere.core.route.router.masterslave.ShardingMasterSlaveRouter;
import org.apache.shardingsphere.core.route.router.sharding.ShardingRouter;
import org.apache.shardingsphere.core.rule.ShardingRule;

import java.util.List;

/**
 * PreparedStatement routing engine.
 * 
 * @author zhangliang
 * @author panjuan
 */
public final class PreparedStatementRoutingEngine {
    
    private final String logicSQL;
    
    private final ShardingRouter shardingRouter;
    
    private final ShardingMasterSlaveRouter masterSlaveRouter;
    
    private SQLStatement sqlStatement;
    
    public PreparedStatementRoutingEngine(final String logicSQL, final ShardingRule shardingRule, final ShardingSphereMetaData metaData, final SQLParseEngine sqlParseEngine) {
        this.logicSQL = logicSQL;
        shardingRouter = new ShardingRouter(shardingRule, metaData, sqlParseEngine);
        masterSlaveRouter = new ShardingMasterSlaveRouter(shardingRule.getMasterSlaveRules());
    }
    
    /**
     * SQL route.
     * 
     * <p>First routing time will parse SQL, after second time will reuse first parsed result.</p>
     * 
     * @param parameters parameters of SQL placeholder
     * @return route result
     */
    public ShardingRouteResult route(final List<Object> parameters) {
        if (null == sqlStatement) {
            sqlStatement = shardingRouter.parse(logicSQL, true);
        }
        return masterSlaveRouter.route(shardingRouter.route(logicSQL, parameters, sqlStatement));
    }
}

@@ -847,224 +847,8 @@
 e;%0A%0A
-import org.apache.shardingsphere.underlying.common.metadata.ShardingSphereMetaData;%0Aimport org.apache.shardingsphere.sql.parser.SQLParseEngine;%0Aimport org.apache.shardingsphere.sql.parser.sql.statement.SQLStatement;%0A
 impo
@@ -1065,16 +1065,160 @@
 ingRule;
+%0Aimport org.apache.shardingsphere.sql.parser.SQLParseEngine;%0Aimport org.apache.shardingsphere.underlying.common.metadata.ShardingSphereMetaData;
 %0A%0Aimport
@@ -1548,52 +1548,8 @@
    %0A
-    private SQLStatement sqlStatement;%0A    %0A
     
@@ -2251,119 +2251,8 @@
 ) %7B%0A
-        if (null == sqlStatement) %7B%0A            sqlStatement = shardingRouter.parse(logicSQL, true);%0A        %7D%0A
     
@@ -2334,19 +2334,43 @@
 s, s
-qlStatement
+hardingRouter.parse(logicSQL, true)
 ));%0A

refactor PreparedStatementRoutingEngine