cyf
120 lines
5.0 KiB
C#
120 lines
5.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Data;
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namespace Lskj.Business.Impl
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{
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public class BaseSpecImpl : BaseImpl
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{
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/// <summary>
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/// <para>说明：删除节点</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-01-04 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="tableName">Name of the table.</param>
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/// <param name="key">The key.</param>
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/// <param name="value">The value.</param>
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/// <returns>System.Int32.</returns>
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public static int DeleteNode(string tableName, string key, string value)
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{
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string sqlValue = string.Format("delete from {0} where {1}='{2}'", tableName, key, value);
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return ExecSqlValue(sqlValue);
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}
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/// <summary>
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/// <para>说明：获取子节点个数</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-01-04 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="tableName">Name of the table.</param>
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/// <param name="key">The key.</param>
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/// <param name="value">The value.</param>
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/// <returns>System.Int32.</returns>
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public static int GetNodeChildCount(string tableName,string key,string value)
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{
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string sqlValue = string.Format("select count(1) from {0} where {1} like '{2}%'", tableName, key, value);
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return Convert.ToInt32(GetResult(sqlValue));
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}
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/// <summary>
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/// <para>说明：获取最大节点号</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-01-03 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="tableName">Name of the table.</param>
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/// <param name="parentId">The parent identifier.</param>
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/// <returns>System.String.</returns>
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/// <exception cref="System.NotImplementedException"></exception>
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public static string GetMaxSpeciesNo(string tableName, string parentKey, string parentValue,string firstNode)
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{
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if (string.IsNullOrWhiteSpace(tableName) || string.IsNullOrWhiteSpace(parentKey) || string.IsNullOrWhiteSpace(parentValue))
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return "01";
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string maxdivision = string.Empty;
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string PrefixNum = string.Empty;
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string maxNum = string.Empty;
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for (int i = 0; i < firstNode.Length; i++)
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{
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maxdivision += "_";
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if (i != 0) PrefixNum += "0";
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maxNum += "9";
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}
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// SpeciesNo是层级编码，完整编码可能超过bigint范围，只对当前节点编号进行数值运算。
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string sqlValue = string.Format("select max(cast(right({1},{4}) as bigint))+1 from {0} where {1} like '{2}{3}'", tableName, parentKey, parentValue, maxdivision, firstNode.Length);
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string maxNo = GetResult(sqlValue) + "";
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if (string.IsNullOrWhiteSpace(maxNo))
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maxNo = parentValue + PrefixNum+"1";
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else
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maxNo = parentValue + maxNo.PadLeft(firstNode.Length, '0');
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maxNo = maxNo.PadLeft(parentValue.Length + firstNode.Length, '0');
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if ((PrefixNum + "0").Equals(maxNo.Substring(maxNo.Length - firstNode.Length)))
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{
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sqlValue = string.Format("select count(1) as cnt from {0} where {1} like '{2}{3}'", tableName, parentKey, parentValue, maxdivision);
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if (GetResult(sqlValue) + "" == maxNum)
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return maxNum;
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// 取未使用的编号
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sqlValue = string.Format("select cast(right({1},{4}) as bigint) as SpeciesNo from {0} where {1} like '{2}{3}' order by SpeciesNo", tableName, parentKey, parentValue,maxdivision, firstNode.Length);
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DataTable table = GetDataTableResult(sqlValue);
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Int64 speciesNo = table.Rows.Count > 0 ? Convert.ToInt64(table.Rows[0]["SpeciesNo"] + "") : 0;
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if (speciesNo != 1)
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return parentValue +PrefixNum+"1";;
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foreach (DataRow item in table.Rows)
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{
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Int64 rowSpeciesNo = Convert.ToInt64(item["SpeciesNo"] + "");
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if (speciesNo == rowSpeciesNo) continue;
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if (rowSpeciesNo != speciesNo + 1)
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{
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maxNo = parentValue + (speciesNo + 1).ToString().PadLeft(firstNode.Length, '0');
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break;
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}
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speciesNo = rowSpeciesNo;
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}
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}
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return maxNo;
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}
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}
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}
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