using ExportMap.cs;
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using ExportMap.Models;
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using Npgsql;
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using System;
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using System.Collections.Generic;
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using System.Data.Common;
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using System.Linq;
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using System.Reflection;
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using System.Web;
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namespace ExportMap.db
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{
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public class PubDBHelper
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{
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private static string insertPublishSql = "insert into lf.sys_publish(name, url, path, type, status, dirid, depid, min, max, json, create_user, geom, bak) values (@name, @url, @path, @type, @status, @dirid, @depid, @min, @max, @json, @create_user, @geom, @bak) returning id";
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private static string insertMetaPubSql = "insert into lf.sys_meta_pub (metaid, pubid, create_user) select {0}, {1}, {2} from (select 1) temp where not exists (select 1 from lf.sys_meta_pub where metaid = {0} and pubid = {1})";
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/// <summary>
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/// 是/否发布过
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/// </summary>
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public static bool IsPublish(int metaid)
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{
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string sql = "select count(*) from lf.sys_meta_pub a inner join lf.sys_publish b on a.pubid = b.id where a.metaid = " + metaid;
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object obj = Tool.DBHelper.GetScalar(sql);
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int count = obj == null ? 0 : Convert.ToInt32(obj);
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return count > 0;
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}
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/// <summary>
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/// 是/否发布过
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/// </summary>
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public static bool IsPublish(string dirid)
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{
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string sql = "select count(*) from lf.sys_meta_pub a inner join lf.sys_publish b on a.pubid = b.id where b.dirid = @dirid";
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DbParameter dp = new NpgsqlParameter("@dirid", dirid);
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object obj = Tool.DBHelper.GetScalar(sql, dp);
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int count = obj == null ? 0 : Convert.ToInt32(obj);
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return count > 0;
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}
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/// <summary>
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/// 插入元数据-数据发布表记录
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/// </summary>
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public static int InsertMetaPub(int metaid, int pubid, int userId)
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{
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string sql = string.Format(insertMetaPubSql, metaid, pubid, userId);
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return Tool.DBHelper.ExecuteNonQuery(sql);
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}
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/// <summary>
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/// 插入数据发布表记录
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/// </summary>
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/// <returns></returns>
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public static int InsertPublish(SysPublish sys)
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{
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List<DbParameter> list = Tool.GetParams<SysPublish>(insertPublishSql, sys);
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object obj = Tool.DBHelper.GetScalar(insertPublishSql, list.ToArray());
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return obj == null ? 0 : Convert.ToInt32(obj);
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}
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/// <summary>
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/// 获取参数列表
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/// </summary>
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public static List<DbParameter> GetParams<T>(string sql, T t)
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{
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List<DbParameter> list = new List<DbParameter>();
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Type tType = typeof(T);
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BindingFlags flags = BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance;
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int start = sql.IndexOf("@");
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while (start != -1)
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{
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int end = sql.IndexOf(",", start);
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if (end == -1) end = sql.IndexOf(")", start);
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if (end == -1) end = sql.IndexOf(" ", start);
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if (end == -1) end = sql.Length;
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string name = sql.Substring(start + 1, end - start - 1);
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PropertyInfo pi = tType.GetProperty(name, flags);
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if (pi != null)
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{
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object value = pi.GetValue(t, null);
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DbParameter dp = new NpgsqlParameter("@" + name, value);
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list.Add(dp);
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}
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start = sql.IndexOf("@", end);
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}
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return list;
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}
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}
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}
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