ShardingSphere-JDBC使用笔记

import org.apache.shardingsphere.infra.config.properties.ConfigurationProperties;
import org.apache.shardingsphere.infra.context.metadata.MetaDataContexts;
import org.apache.shardingsphere.infra.context.runtime.RuntimeContext;
import org.apache.shardingsphere.infra.database.DefaultSchema;
import org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine;
import org.apache.shardingsphere.infra.metadata.ShardingSphereMetaData;
import org.apache.shardingsphere.infra.optimize.context.OptimizerContext;
import org.apache.shardingsphere.infra.rule.ShardingSphereRule;
import org.apache.shardingsphere.mode.manager.ContextManager;
import org.apache.shardingsphere.mode.metadata.MetaDataContextsBuilder;
import org.apache.shardingsphere.transaction.TransactionType;
import org.apache.shardingsphere.transaction.context.TransactionContexts;
import org.apache.shardingsphere.transaction.core.TransactionTypeHolder;
 
// 示例代码，仅用于展示如何构建ShardingSphereMetaData
public class ShardingSphereMetaDataExample {
 
    public static void main(String[] args) {
        // 构建配置属性
        ConfigurationProperties properties = new ConfigurationProperties(...);
        // 构建ShardingSphereMetaData
        ShardingSphereMetaData metaData = new ShardingSphereMetaData(
                "ds0", 
                mockDatabaseMetaData(), 
                mockResource(), 
                mockRuleMap(), 
                properties
        );
        // 构建OptimizerContext
        OptimizerContext optimizerContext = new OptimizerContext(...);
        // 构建RuntimeContext
        RuntimeContext runtimeContext = new RuntimeContext(
                metaData, 
                mockExecutorEngine(), 
                optimizerContext, 
                mockTransactionContexts()
        );
        // 构建MetaDataContexts
        MetaDataContexts metaDataContexts = new MetaDataContexts(mockDefaultMetaDataMap(), runtimeContext);
        // 构建ContextManager
        ContextManager contextManager = new ContextManager(metaDataContexts, mockTransactionEngine(), mockAuthentication());
        // 初始化ContextManager
        contextManager.init();
        
        // 使用contextManager进行数据库操作...
    }