StatementExecutorWrapper.java

/*
 * 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>
 */

package com.dangdang.ddframe.rdb.sharding.executor.wrapper;

import com.dangdang.ddframe.rdb.sharding.executor.event.DMLExecutionEvent;
import com.dangdang.ddframe.rdb.sharding.executor.event.DQLExecutionEvent;
import com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit;
import com.google.common.base.Optional;
import lombok.Getter;

import java.sql.Statement;

/**
 * 静态语句对象的执行上下文.
 * 
 * @author zhangliang
 */
public final class StatementExecutorWrapper extends AbstractExecutorWrapper {
    
    @Getter
    private final Statement statement;
    
    private final Optional<DMLExecutionEvent> dmlExecutionEvent;
    
    private final Optional<DQLExecutionEvent> dqlExecutionEvent;
    
    public StatementExecutorWrapper(final Statement statement, final SQLExecutionUnit sqlExecutionUnit) {
        super(sqlExecutionUnit);
        this.statement = statement;
        if (isDML()) {
            dmlExecutionEvent = Optional.of(new DMLExecutionEvent(getSqlExecutionUnit().getDataSource(), getSqlExecutionUnit().getSql()));
            dqlExecutionEvent = Optional.absent();
        } else if (isDQL()) {
            dqlExecutionEvent = Optional.of(new DQLExecutionEvent(getSqlExecutionUnit().getDataSource(), getSqlExecutionUnit().getSql()));
            dmlExecutionEvent = Optional.absent();
        } else {
            dmlExecutionEvent = Optional.absent();
            dqlExecutionEvent = Optional.absent();
        }
    }
    
    @Override
    public Optional<DMLExecutionEvent> getDMLExecutionEvent() {
        return dmlExecutionEvent;
    }
    
    @Override
    public Optional<DQLExecutionEvent> getDQLExecutionEvent() {
        return dqlExecutionEvent;
    }
}