388 lines
9.9 KiB
C#
388 lines
9.9 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Data;
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using Aitex.Core.RT.Log;
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using Aitex.Core.Utilities;
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using Npgsql;
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namespace Aitex.Core.RT.DBCore
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{
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public class PostgresqlDB
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{
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private NpgsqlConnection _conn;
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private string _connectionString;
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private string _dbName;
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private Retry _retryConnection = new Retry();
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private bool _dbFailed;
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public bool Open(string connectionString, string dbName)
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{
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_connectionString = connectionString;
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_dbName = dbName;
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bool result = true;
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try
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{
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if (_conn != null)
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{
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_conn.Close();
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}
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_conn = new NpgsqlConnection(connectionString);
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_conn.Open();
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if (!string.IsNullOrEmpty(dbName))
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{
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CreateDBIfNotExisted(dbName);
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}
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_dbFailed = false;
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}
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catch (Exception ex)
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{
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if (_conn != null)
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{
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_conn.Close();
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_conn = null;
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}
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result = false;
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if (!_dbFailed)
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{
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LOG.Write(ex);
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_dbFailed = true;
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}
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}
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_retryConnection.Result = result;
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return result;
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}
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private bool Open()
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{
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return Open(_connectionString, _dbName);
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}
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private void PrepareCommand(NpgsqlCommand cmd, NpgsqlConnection conn, string cmdText, params object[] p)
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{
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cmd.Parameters.Clear();
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cmd.Connection = conn;
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cmd.CommandText = cmdText;
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cmd.CommandType = CommandType.Text;
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if (p != null)
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{
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foreach (object value in p)
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{
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cmd.Parameters.AddWithValue(string.Empty, value);
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}
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}
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}
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private void PrepareCommand(NpgsqlCommand cmd, NpgsqlConnection conn, string cmdText, string[] columnsName, params object[] p)
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{
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cmd.Parameters.Clear();
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cmd.Connection = conn;
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cmd.CommandText = cmdText;
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cmd.CommandType = CommandType.Text;
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if (p != null && columnsName != null && p.Length != 0 && columnsName.Length == p.Length)
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{
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for (int i = 0; i < p.Length; i++)
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{
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cmd.Parameters.AddWithValue(columnsName[i], p[i]);
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}
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}
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}
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public int ExecuteNonQuery(string cmdText, params object[] p)
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{
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try
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{
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using NpgsqlCommand npgsqlCommand = new NpgsqlCommand();
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PrepareCommand(npgsqlCommand, _conn, cmdText, p);
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return npgsqlCommand.ExecuteNonQuery();
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}
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catch
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{
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Close();
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throw;
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}
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}
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public int ExecuteNonQueryWithParam(string cmdText, string[] columnsName, params object[] p)
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{
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try
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{
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DataSet dataSet = new DataSet();
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using (NpgsqlConnection npgsqlConnection = new NpgsqlConnection(_connectionString))
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{
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npgsqlConnection.Open();
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npgsqlConnection.ChangeDatabase(_dbName);
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using NpgsqlCommand npgsqlCommand = new NpgsqlCommand();
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try
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{
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PrepareCommand(npgsqlCommand, npgsqlConnection, cmdText, columnsName, p);
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return npgsqlCommand.ExecuteNonQuery();
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}
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catch (Exception ex)
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{
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LOG.Error("执行查询出错，" + cmdText, ex);
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}
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}
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return 0;
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}
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catch
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{
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Close();
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throw;
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}
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}
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public DataSet ExecuteDataset(string cmdText, params object[] p)
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{
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try
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{
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DataSet dataSet = new DataSet();
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using (NpgsqlConnection npgsqlConnection = new NpgsqlConnection(_connectionString))
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{
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npgsqlConnection.Open();
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npgsqlConnection.ChangeDatabase(_dbName);
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using NpgsqlCommand npgsqlCommand = new NpgsqlCommand();
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try
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{
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PrepareCommand(npgsqlCommand, npgsqlConnection, cmdText, p);
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NpgsqlDataAdapter npgsqlDataAdapter = new NpgsqlDataAdapter(npgsqlCommand);
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npgsqlDataAdapter.Fill(dataSet);
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}
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catch (Exception ex)
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{
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LOG.Error("执行查询出错，" + cmdText, ex);
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}
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}
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return dataSet;
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}
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catch (Exception ex2)
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{
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LOG.Error("执行查询出错，" + cmdText, ex2);
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}
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return null;
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}
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public NpgsqlDataReader ExecuteReader(string cmdText, params object[] p)
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{
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try
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{
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using NpgsqlCommand npgsqlCommand = new NpgsqlCommand();
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PrepareCommand(npgsqlCommand, _conn, cmdText, p);
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return npgsqlCommand.ExecuteReader(CommandBehavior.CloseConnection);
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}
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catch
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{
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Close();
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throw;
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}
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}
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public bool ExcuteTransAction(List<string> lstStr)
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{
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try
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{
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DataSet dataSet = new DataSet();
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using NpgsqlConnection npgsqlConnection = new NpgsqlConnection(_connectionString);
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npgsqlConnection.Open();
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npgsqlConnection.ChangeDatabase(_dbName);
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NpgsqlTransaction npgsqlTransaction = npgsqlConnection.BeginTransaction();
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using NpgsqlCommand npgsqlCommand = new NpgsqlCommand();
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try
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{
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npgsqlCommand.Transaction = npgsqlTransaction;
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npgsqlCommand.Connection = npgsqlConnection;
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npgsqlCommand.CommandType = CommandType.Text;
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for (int i = 0; i < lstStr.Count; i++)
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{
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npgsqlCommand.Parameters.Clear();
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npgsqlCommand.CommandText = lstStr[i];
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npgsqlCommand.ExecuteNonQuery();
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}
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npgsqlTransaction.Commit();
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}
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catch (Exception ex)
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{
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npgsqlTransaction.Rollback();
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LOG.Error("执行查询出错，", ex);
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return false;
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}
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}
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catch (Exception ex2)
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{
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LOG.Error("执行查询出错，", ex2);
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return false;
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}
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return true;
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}
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public bool ActiveConnection()
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{
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if (_conn != null && _conn.State == ConnectionState.Open)
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{
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return true;
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}
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return Open();
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}
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public void Close()
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{
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try
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{
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if (_conn != null)
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{
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_conn.Close();
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}
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_conn = null;
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_dbFailed = false;
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}
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catch (Exception ex)
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{
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if (!_dbFailed)
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{
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LOG.Write(ex);
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_dbFailed = true;
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}
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}
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}
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public void CreateDBIfNotExisted(string db)
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{
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NpgsqlDataReader npgsqlDataReader = ExecuteReader($"select datname from pg_catalog.pg_database where datname='{db}'");
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if (!npgsqlDataReader.HasRows)
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{
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string cmdText = $"\r\n CREATE DATABASE {db}\r\n WITH OWNER = postgres\r\n ENCODING = 'UTF8'\r\n TABLESPACE = pg_default\r\n CONNECTION LIMIT = -1";
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ExecuteNonQuery(cmdText);
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}
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try
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{
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_conn.ChangeDatabase(db);
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}
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catch
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{
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_conn.Close();
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throw;
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}
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}
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public void CreateTableIndexIfNotExisted(string table, string index, string sql)
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{
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NpgsqlDataReader npgsqlDataReader = ExecuteReader("select* from pg_indexes where tablename='" + table + "' and indexname = '" + index + "'");
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if (!npgsqlDataReader.HasRows)
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{
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ExecuteNonQuery(sql);
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}
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}
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public void CreateTableIfNotExisted(string table, Dictionary<string, Type> columns, bool addPID, string primaryKey)
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{
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NpgsqlDataReader npgsqlDataReader = ExecuteReader($"select column_name from information_schema.columns where table_name = '{table}'");
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if (!npgsqlDataReader.HasRows)
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{
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string text = (addPID ? " \"PID\" serial NOT NULL," : "");
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foreach (KeyValuePair<string, Type> column in columns)
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{
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if (column.Value == typeof(int) || column.Value == typeof(ushort) || column.Value == typeof(short))
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{
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text += $"\"{column.Key}\" integer,";
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}
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else if (column.Value == typeof(double) || column.Value == typeof(float))
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{
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text += $"\"{column.Key}\" real,";
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}
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else if (column.Value == typeof(string))
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{
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text += $"\"{column.Key}\" text,";
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}
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else if (column.Value == typeof(DateTime))
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{
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text += $"\"{column.Key}\" timestamp without time zone,";
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}
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else if (column.Value == typeof(bool))
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{
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text += $"\"{column.Key}\" boolean,";
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}
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else if (column.Value == typeof(byte[]))
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{
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text += $"\"{column.Key}\" bytea,";
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}
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}
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if (string.IsNullOrEmpty(primaryKey))
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{
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if (text.LastIndexOf(',') == text.Length - 1)
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{
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text = text.Remove(text.Length - 1);
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}
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}
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else
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{
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text += $"CONSTRAINT \"{table}_pkey\" PRIMARY KEY (\"{primaryKey}\" )";
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}
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ExecuteNonQuery($"CREATE TABLE \"{table}\"({text})WITH ( OIDS=FALSE );");
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}
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else
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{
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CreateTableColumn(table, columns);
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}
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}
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public void CreateTableColumn(string tableName, Dictionary<string, Type> columns)
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{
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try
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{
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string cmdText = $"select column_name from information_schema.columns where table_name = '{tableName}';";
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NpgsqlCommand npgsqlCommand = new NpgsqlCommand(cmdText, _conn);
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NpgsqlDataReader npgsqlDataReader = npgsqlCommand.ExecuteReader();
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string text = string.Empty;
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List<string> list = new List<string>();
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while (npgsqlDataReader.Read())
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{
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for (int i = 0; i < npgsqlDataReader.FieldCount; i++)
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{
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list.Add(npgsqlDataReader[i].ToString());
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}
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}
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npgsqlDataReader.Close();
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if (list.Count > 0)
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{
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foreach (KeyValuePair<string, Type> column in columns)
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{
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if (!list.Contains(column.Key))
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{
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text = ((!(column.Value == typeof(bool))) ? ((!(column.Value == typeof(double)) && !(column.Value == typeof(float))) ? ((!(column.Value == typeof(DateTime))) ? ((!(column.Value == typeof(int)) && !(column.Value == typeof(ushort)) && !(column.Value == typeof(short))) ? (text + string.Format("ALTER TABLE \"{0}\" ADD COLUMN \"{1}\" {2};", tableName, column.Key, "text")) : (text + string.Format("ALTER TABLE \"{0}\" ADD COLUMN \"{1}\" {2};", tableName, column.Key, "integer"))) : (text + string.Format("ALTER TABLE \"{0}\" ADD COLUMN \"{1}\" {2};", tableName, column.Key, "timestamp without time zone"))) : (text + string.Format("ALTER TABLE \"{0}\" ADD COLUMN \"{1}\" {2};", tableName, column.Key, "real"))) : (text + string.Format("ALTER TABLE \"{0}\" ADD COLUMN \"{1}\" {2};", tableName, column.Key, "Boolean")));
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}
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}
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if (!string.IsNullOrEmpty(text))
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{
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try
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{
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NpgsqlCommand npgsqlCommand2 = new NpgsqlCommand(text, _conn);
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npgsqlCommand2.ExecuteNonQuery();
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_dbFailed = false;
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}
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catch (Exception ex)
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{
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if (!_dbFailed)
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{
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LOG.Write(ex);
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_dbFailed = true;
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}
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}
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}
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}
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_dbFailed = true;
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}
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catch (Exception ex2)
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{
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if (!_dbFailed)
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{
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LOG.Write(ex2);
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_dbFailed = true;
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}
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}
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}
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}
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}
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