CNAS/CnasSynchronusDAL/DAL/Helper/KingbaseHelper.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using CnasSynchronousCommon;
using Kdbndp;  // 人大金仓数据库驱动

namespace CnasSynchronusDAL
{
    public static class KingbaseHelper
    {
        private static String mConnStr = null;

        public static void InitConnectionString(string strServerIP, string strServerPort, string strServerHost, string strServerUser, string strServerPwd)
        {
            // 使用KdbndpConnectionStringBuilder构建连接字符串
            var builder = new KdbndpConnectionStringBuilder
            {
                Host = strServerIP,
                Port = Convert.ToInt32(strServerPort),
                Database = strServerHost,
                Username = strServerUser,
                Password = strServerPwd
            };
            mConnStr = builder.ToString();
        }

        public static void InitConnectionString(string strConnectiong)
        {
            mConnStr = strConnectiong;
        }

        /// <summary>  
        /// 对Kingbase数据库执行增删改操作，返回受影响的行数。  
        /// </summary>  
        /// <param name="sql">要执行的增删改的SQL语句</param>  
        /// <returns></returns>  
        public static int ExecuteNonQuery(String sql)
        {
            using (var connection = new KdbndpConnection(mConnStr))
            {
                try
                {
                    connection.Open();
                    using (var transaction = connection.BeginTransaction())
                    {
                        try
                        {
                            using (var cmd = new KdbndpCommand(sql, connection, transaction))
                            {
                                int rows = cmd.ExecuteNonQuery();
                                transaction.Commit();
                                return rows;
                            }
                        }
                        catch (Exception e1)
                        {
                            transaction.Rollback();
                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
                catch (Exception e)
                {
                    AppLog.Error(e.Message);
                    throw;
                }
            }
        }

        /// <summary>  
        /// 对数据库执行增删改操作，返回受影响的行数。  
        /// </summary>  
        /// <param name="sql">要执行的增删改的SQL语句</param>  
        /// <returns></returns>  
        public static int ExecuteNonQuery(String sql, KdbndpParameter[] cmdParams)
        {
            using (var connection = new KdbndpConnection(mConnStr))
            {
                try
                {
                    connection.Open();
                    using (var transaction = connection.BeginTransaction())
                    {
                        try
                        {
                            using (var cmd = new KdbndpCommand(sql, connection, transaction))
                            {
                                if (cmdParams != null)
                                {
                                    cmd.Parameters.AddRange(cmdParams);
                                }
                                int rows = cmd.ExecuteNonQuery();
                                transaction.Commit();
                                return rows;
                            }
                        }
                        catch (Exception e1)
                        {
                            transaction.Rollback();
                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
                catch (Exception e)
                {
                    AppLog.Error(e.Message);
                    throw;
                }
            }
        }

        /// <summary>
        /// 对Kingbase数据库执行操作，返回 返回第一行第一列数据
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public static int ExecuteScalar(String sql)
        {
            try
            {
                using (KdbndpConnection connection = new KdbndpConnection(mConnStr))
                {
                    connection.Open();
                    KdbndpTransaction transaction = connection.BeginTransaction();

                    using (KdbndpCommand cmd = new KdbndpCommand())
                    {
                        try
                        {
                            int line = 0;

                            PrepareCommand(cmd, connection, transaction, CommandType.Text, sql, null);

                            String str = cmd.ExecuteScalar().ToString();
                            transaction.Commit();

                            line = Convert.ToInt32(str);
                            cmd.Parameters.Clear();

                            return line;
                        }
                        catch (KdbndpException e1)
                        {
                            try
                            {
                                transaction.Rollback();
                            }
                            catch (Exception e2)
                            {
                                AppLog.Error(e2.Message);
                                throw;
                            }

                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
            }
            catch (Exception e)
            {
                AppLog.Error(e.Message);
                throw;
            }
        }

        /// <summary>
        /// 对Kingbase数据库执行操作，返回 返回第一行第一列数据
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public static int ExecuteScalar(String sql, KdbndpParameter[] cmdParams)
        {
            try
            {
                using (KdbndpConnection connection = new KdbndpConnection(mConnStr))
                {
                    connection.Open();
                    KdbndpTransaction transaction = connection.BeginTransaction();

                    using (KdbndpCommand cmd = new KdbndpCommand())
                    {
                        try
                        {
                            int line = 0;

                            PrepareCommand(cmd, connection, transaction, CommandType.Text, sql, cmdParams);

                            String str = cmd.ExecuteScalar().ToString();
                            transaction.Commit();

                            line = Convert.ToInt32(str);
                            cmd.Parameters.Clear();

                            return line;
                        }
                        catch (KdbndpException e1)
                        {
                            try
                            {
                                transaction.Rollback();
                            }
                            catch (Exception e2)
                            {
                                AppLog.Error(e2.Message);
                                throw;
                            }

                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
            }
            catch (Exception e)
            {
                AppLog.Error(e.Message);
                throw;
            }
        }

        /// <summary>
        ///  用执行的数据库连接执行一个返回数据集的sql命令
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public static KdbndpDataReader ExecuteReader(String sql)
        {
            try
            {
                //创建一个KdbndpConnection对象
                using (KdbndpConnection connection = new KdbndpConnection(mConnStr))
                {
                    connection.Open();
                    KdbndpTransaction transaction = connection.BeginTransaction();

                    //创建一个KdbndpCommand对象
                    using (KdbndpCommand cmd = new KdbndpCommand())
                    {
                        try
                        {
                            PrepareCommand(cmd, connection, transaction, CommandType.Text, sql, null);

                            KdbndpDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                            transaction.Commit();

                            cmd.Parameters.Clear();
                            return reader;
                        }
                        catch (KdbndpException e1)
                        {
                            try
                            {
                                transaction.Rollback();
                            }
                            catch (Exception e2)
                            {
                                AppLog.Error(e2.Message);
                                throw;
                            }

                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
            }
            catch (Exception e)
            {
                AppLog.Error(e.Message);
                throw;
            }
        }

        /// <summary>
        /// 查询返回Dtaset
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public static DataSet ExecuteDataSet(String sql)
        {
            using (var connection = new KdbndpConnection(mConnStr))
            {
                try
                {
                    connection.Open();
                    using (var transaction = connection.BeginTransaction())
                    {
                        try
                        {
                            using (var cmd = new KdbndpCommand(sql, connection, transaction))
                            {
                                var adapter = new KdbndpDataAdapter(cmd);
                                var ds = new DataSet();
                                adapter.Fill(ds);
                                transaction.Commit();
                                return ds;
                            }
                        }
                        catch (Exception e1)
                        {
                            transaction.Rollback();
                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
                catch (Exception e)
                {
                    AppLog.Error(e.Message);
                    throw;
                }
            }
        }

        /// <summary>
        /// 执行sql 返回一个DataTable
        /// </summary>
        /// <param name="sqlText"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public static DataTable ExecuteDataTable(string sqlText, params KdbndpParameter[] parameters)
        {
            using (var connection = new KdbndpConnection(mConnStr))
            {
                try
                {
                    using (var adapter = new KdbndpDataAdapter(sqlText, connection))
                    {
                        if (parameters != null)
                        {
                            adapter.SelectCommand.Parameters.AddRange(parameters);
                        }
                        var dt = new DataTable();
                        adapter.Fill(dt);
                        return dt;
                    }
                }
                catch (Exception ex)
                {
                    AppLog.Error(ex.Message);
                    return null;
                }
            }
        }

        /// <summary>
        /// 查询返回Dtaset
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public static DataSet ExecuteDataSet(String sql, KdbndpParameter[] cmdParams)
        {
            KdbndpConnection connection = new KdbndpConnection(mConnStr);
            try
            {
                //创建一个KdbndpConnection对象
                using (connection)
                {
                    connection.Open();
                    KdbndpTransaction transaction = connection.BeginTransaction();

                    //创建一个KdbndpCommand对象
                    using (KdbndpCommand cmd = new KdbndpCommand())
                    {
                        try
                        {
                            PrepareCommand(cmd, connection, transaction, CommandType.Text, sql, cmdParams);

                            KdbndpDataAdapter adapter = new KdbndpDataAdapter();
                            adapter.SelectCommand = cmd;
                            DataSet ds = new DataSet();

                            adapter.Fill(ds);

                            transaction.Commit();

                            //清除参数
                            cmd.Parameters.Clear();
                            return ds;

                        }
                        catch (KdbndpException e1)
                        {
                            try
                            {
                                transaction.Rollback();
                            }
                            catch (Exception e2)
                            {
                                AppLog.Error(e2.Message);
                                throw;
                            }

                            AppLog.Error(e1.Message);
                            throw;
                        }
                    }
                }
            }
            catch (Exception e)
            {
                AppLog.Error(e.Message);
                throw;
            }
        }

        /// <summary>
        /// 准备执行一个命令
        /// </summary>
        /// <param name="cmd">sql命令</param>
        /// <param name="conn">OleDb连接</param>
        /// <param name="trans">OleDb事务</param>
        /// <param name="cmdType">命令类型例如 存储过程或者文本</param>
        /// <param name="cmdText">命令文本,例如:Select * from Products</param>
        /// <param name="cmdParms">执行命令的参数</param>
        private static void PrepareCommand(KdbndpCommand cmd, KdbndpConnection conn, KdbndpTransaction trans, CommandType cmdType, string cmdText, KdbndpParameter[] cmdParms)
        {
            if (conn.State != ConnectionState.Open)
                conn.Open();

            cmd.Connection = conn;
            cmd.CommandText = cmdText;

            if (trans != null)
                cmd.Transaction = trans;

            cmd.CommandType = cmdType;

            if (cmdParms != null)
            {
                foreach (KdbndpParameter parm in cmdParms)
                    cmd.Parameters.Add(parm);
            }
        }

        public static bool TestConnectKingbase()
        {
            try
            {
                

                // 完整参数示例
                //string connStr = "Host=localhost;Port=54321;Database=test;Username=system;Password=1;Pooling=true;MinPoolSize=1;MaxPoolSize=20;CommandTimeout=120;";
                string connStr =  "Host=localhost;Port=54321;Database=testdb;Username=SYSTEM;Password=1;";
                //using (var connection = new KdbndpConnection(mConnStr))
                using (var connection = new KdbndpConnection())
                {
                    connection.ConnectionString = connStr;
                    connection.Open();
                    return connection.State == ConnectionState.Open;
                }
            }
            catch (Exception ex)
            {
                AppLog.Error(ex.Message);
                return false;
            }
        }
    }
}