Support NET PGSQL

Src/Asp.Net/SqlSugar/Realization/PostgreSQL/PostgreSQLProvider.cs

@@ -0,0 +1,113 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Npgsql;
+
+namespace SqlSugar
+{
+    public partial class PostgreSQLProvider : AdoProvider
+    {
+        public PostgreSQLProvider() { }
+        public override IDbConnection Connection
+        {
+            get
+            {
+                if (base._DbConnection == null)
+                {
+                    try
+                    {
+                        var npgsqlConnectionString = base.Context.CurrentConnectionConfig.ConnectionString;
+                        base._DbConnection = new NpgsqlConnection(npgsqlConnectionString);
+                    }
+                    catch (Exception ex)
+                    {
+                        Check.Exception(true, ErrorMessage.ConnnectionOpen, ex.Message);
+                    }
+                }
+                return base._DbConnection;
+            }
+            set
+            {
+                base._DbConnection = value;
+            }
+        }
+
+        public override void BeginTran(string transactionName)
+        {
+            base.BeginTran();
+        }
+        /// <summary>
+        /// Only SqlServer
+        /// </summary>
+        /// <param name="iso"></param>
+        /// <param name="transactionName"></param>
+        public override void BeginTran(IsolationLevel iso, string transactionName)
+        {
+            base.BeginTran(iso);
+        }
+        public override IDataAdapter GetAdapter()
+        {
+            return new NpgsqlDataAdapter();
+        }
+        public override DbCommand GetCommand(string sql, SugarParameter[] parameters)
+        {
+            NpgsqlCommand sqlCommand = new NpgsqlCommand(sql, (NpgsqlConnection)this.Connection);
+            sqlCommand.CommandType = this.CommandType;
+            sqlCommand.CommandTimeout = this.CommandTimeOut;
+            if (this.Transaction != null)
+            {
+                sqlCommand.Transaction = (NpgsqlTransaction)this.Transaction;
+            }
+            if (parameters.HasValue())
+            {
+                IDataParameter[] ipars = ToIDbDataParameter(parameters);
+                sqlCommand.Parameters.AddRange((NpgsqlParameter[])ipars);
+            }
+            CheckConnection();
+            return sqlCommand;
+        }
+        public override void SetCommandToAdapter(IDataAdapter dataAdapter, DbCommand command)
+        {
+            ((NpgsqlDataAdapter)dataAdapter).SelectCommand = (NpgsqlCommand)command;
+        }
+        /// <summary>
+        /// if mysql return MySqlParameter[] pars
+        /// if sqlerver return SqlParameter[] pars ...
+        /// </summary>
+        /// <param name="parameters"></param>
+        /// <returns></returns>
+        public override IDataParameter[] ToIDbDataParameter(params SugarParameter[] parameters)
+        {
+            if (parameters == null || parameters.Length == 0) return null;
+            NpgsqlParameter[] result = new NpgsqlParameter[parameters.Length];
+            int index = 0;
+            foreach (var parameter in parameters)
+            {
+                if (parameter.Value == null) parameter.Value = DBNull.Value;
+                var sqlParameter = new NpgsqlParameter();
+                sqlParameter.ParameterName = parameter.ParameterName;
+                sqlParameter.Size = parameter.Size;
+                sqlParameter.Value = parameter.Value;
+                sqlParameter.DbType = parameter.DbType;
+                sqlParameter.Direction = parameter.Direction;
+                if (sqlParameter.Direction == 0)
+                {
+                    sqlParameter.Direction = ParameterDirection.Input;
+                }
+                result[index] = sqlParameter;
+                if (sqlParameter.Direction.IsIn(ParameterDirection.Output, ParameterDirection.InputOutput, ParameterDirection.ReturnValue))
+                {
+                    if (this.OutputParameters == null) this.OutputParameters = new List<IDataParameter>();
+                    this.OutputParameters.RemoveAll(it => it.ParameterName == sqlParameter.ParameterName);
+                    this.OutputParameters.Add(sqlParameter);
+                }
+                ++index;
+            }
+            return result;
+        }
+    }
+}