256 lines
7.8 KiB
C#
256 lines
7.8 KiB
C#
/*********************************************************************************************
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* Copyright 2004 - Volian Enterprises, Inc. All rights reserved.
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* Volian Enterprises - Proprietary Information - DO NOT COPY OR DISTRIBUTE
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* ------------------------------------------------------------------------------
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* $Workfile: vdb_SetExt.cs $ $Revision: 2 $
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* $Author: Jsj $ $Date: 8/23/04 10:12a $
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*
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* $History: vdb_SetExt.cs $
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*
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* ***************** Version 2 *****************
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* User: Jsj Date: 8/23/04 Time: 10:12a
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* Updated in $/LibSource/VDB
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* Fixed replace of single quote
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*
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* ***************** Version 1 *****************
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* User: Kathy Date: 7/27/04 Time: 8:40a
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* Created in $/LibSource/VDB
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*********************************************************************************************/
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using System;
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using System.Data;
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using System.Text;
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using System.Collections.Specialized;
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using System.Windows.Forms;
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using VDB;
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namespace VDB_SetExt
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{
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/// <summary>
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/// Open, Create, Delete, Update functions for SETEXT files (tables)
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/// (set extension)
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/// </summary>
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public class vdb_SetExt:VDB_Base
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{
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public vdb_SetExt(String strPath):base(strPath)
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{
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// if no table (file name) specified, then default to SETEXT (SET.DBF)
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if (DBTable.Equals(""))
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DBTable = "SETEXT";
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}
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// Build a SQL statement for selecting the data. The select for the set extension
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// datta is much more involved because the date field for the approved date needs
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// calculated/formatted.
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public override string DefaultSelectCommand()
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{
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StringBuilder tmp = new StringBuilder();
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tmp.Append("select t3.COMMENT, t3.REV, t3.PC, t3.RECID,format(ApprovedDate,'m/d/yyyy hh:nn:ss') ");
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tmp.Append(" as ApprovedDate from(select COMMENT, REV, PC, RECID,iif(MyDate=DateValue('1/1/1970'),null,MyDate) ");
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tmp.Append(" as ApprovedDate from (select COMMENT, REV, PC, RECID, dateadd(\"S\",(((asc(mid(tdstamp,4,1))*256)+asc(mid(tdstamp,3,1)) )");
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tmp.Append("*256+asc(mid(tdstamp,2,1)) )*256+asc(mid(tdstamp,1,1)),datevalue('1/1/1970')) as MyDate ");
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tmp.Append(" from (select COMMENT, REV, PC, RECID,iif(isnull(tdstamp),chr(0)+chr(0)+chr(0)+chr(0),left(tdstamp+chr(0)+chr(0)+chr(0)+chr(0),4)) as tdstamp from setext)t1)t2)t3 ");
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SelectCmd = tmp.ToString();
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return SelectCmd;
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}
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// Build the SQL command needed to update a row in the SETEXT file
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public override string GetRecUpdateStr(DataTable tbl,DataRow row)
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{
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int j = 0;
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StringBuilder updateStr = new StringBuilder();
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StringBuilder LikeRecID = new StringBuilder();
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updateStr.Append("UPDATE [");
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updateStr.Append(DBTable);
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updateStr.Append("] SET");
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foreach (DataColumn col in tbl.Columns)
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{
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bool isString = (col.DataType == Type.GetType("System.String"));
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if (col.ColumnName.ToUpper().Equals("RECID"))
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{
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LikeRecID.Append("___"); // ignore the first 3 positions
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LikeRecID.Append(row.ItemArray[j].ToString(),3,5);
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}
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//only comment is updated (at least for initial 32bit veproms
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// browser. This may need modified if it is used later
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if (col.ColumnName.ToUpper().Equals("COMMENT"))
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{
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updateStr.Append(" [");
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updateStr.Append(col.ColumnName);
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updateStr.Append("]=");
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if (row.ItemArray[j].ToString().Equals(""))
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{
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updateStr.Append("NULL");
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}
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else if (isString)
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{
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String tmpstr = row.ItemArray[j].ToString();
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updateStr.Append("'");
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tmpstr = tmpstr.Replace("'","''");
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updateStr.Append(tmpstr);
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updateStr.Append("'");
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}
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else
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{
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updateStr.Append(row.ItemArray[j].ToString());
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}
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}
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j++;
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}
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updateStr.Append(" WHERE [RECID] LIKE '");
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updateStr.Append(LikeRecID.ToString());
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updateStr.Append("'");
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return updateStr.ToString();
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}
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// Build the SQL command needed to insert a row in the SET file
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public override string GetRecInsertStr(DataTable tbl,DataRow row)
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{
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int j = 0;
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StringBuilder insrtStr = new StringBuilder();
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StringBuilder valueStr = new StringBuilder();
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insrtStr.Append("INSERT INTO [");
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insrtStr.Append(DBTable);
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insrtStr.Append("] (");
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valueStr.Append(" VALUES (");
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foreach (DataColumn col in tbl.Columns)
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{
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// the select statement was modified to handle the tdstamp field (which
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// is a calculated date). This needs to be handled on insert, i.e. the
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// fieldname.
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bool isString = (col.DataType == Type.GetType("System.String"));
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bool isApprovedDate = col.ColumnName.ToUpper().Equals("APPROVEDDATE");
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insrtStr.Append("[");
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if(!isApprovedDate)
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insrtStr.Append(col.ColumnName);
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else
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insrtStr.Append("TDSTAMP");
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insrtStr.Append("],");
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if (row.ItemArray[j].ToString().Equals(""))
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{
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valueStr.Append("NULL");
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}
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else if (isString)
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{
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String tmpstr = row.ItemArray[j].ToString();
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tmpstr = tmpstr.Replace("'","''");
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valueStr.Append("'");
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valueStr.Append(tmpstr);
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valueStr.Append("'");
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}
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else
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{
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valueStr.Append(row.ItemArray[j].ToString());
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}
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valueStr.Append(",");
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j++;
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}
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insrtStr = insrtStr.Replace(',',')',insrtStr.Length-1,1);
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valueStr = valueStr.Replace(',',')',valueStr.Length-1,1);
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insrtStr.Append(valueStr.ToString());
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return insrtStr.ToString();
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}
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// Build the SQL command needed to delete a row in the SET file
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public override string RecDeleteStr(DataTable tbl,DataRow row)
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{
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int j = 0;
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String RecIDStr = "";
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StringBuilder deleteStr = new StringBuilder();
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deleteStr.Append("DELETE FROM [");
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deleteStr.Append(DBTable);
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deleteStr.Append("] WHERE ");
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row.RejectChanges();
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foreach (DataColumn col in tbl.Columns)
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{
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if (col.ColumnName.Equals("RECID"))
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{
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RecIDStr = row.ItemArray[j].ToString();
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}
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j++;
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}
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deleteStr.Append("[RECID] = '");
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deleteStr.Append(RecIDStr);
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deleteStr.Append("'");
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return deleteStr.ToString();
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}
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// Build a list of SQL commands needed to create a new SET table (file)
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// and add the first row
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public override StringCollection CreateTableStatements(string strTblName)
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{
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StringCollection rtnStrColl = new StringCollection();
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StringBuilder createStr = new StringBuilder();
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if (strTblName.Length > 0) // was a table name passd in?
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{
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DBTable = strTblName;
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}
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if (DBTable.Equals(""))
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{
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MessageBox.Show("Trying to Create a new Table without a Name","Create Table Error");
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return rtnStrColl;
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}
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// Build the command that creates a new SET table (file)
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createStr.Append("CREATE TABLE [");
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createStr.Append(DBTable);
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createStr.Append("] ");
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createStr.Append("([COMMENT] Char(250), [REV] Char(30), [PC] Char(10), ");
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createStr.Append("[RECID] Char(8), [TDSTAMP] Int)");
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rtnStrColl.Add(createStr.ToString()); // add create table
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return rtnStrColl;
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}
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// Build a list of SQL commands needed to create the first data row
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public override StringCollection CreateFirstRecordStatement(string strTblName)
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{
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StringCollection rtnStrColl = new StringCollection();
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StringBuilder firstRecStr = new StringBuilder();
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// Build the command that adds the first (blank) record
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// with the RECID initialize to 00000001
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firstRecStr.Append("INSERT INTO [");
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firstRecStr.Append(DBTable);
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firstRecStr.Append("] ([RECID]) VALUES ('00000001')");
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rtnStrColl.Add(firstRecStr.ToString()); // add inserst first record
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return rtnStrColl;
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}
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// return a list of SQL commands that will drop (delete) a database table (file)
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public override StringCollection DeleteTableStatements(string strTblName)
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{
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StringCollection rtnStrColl = new StringCollection();
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StringBuilder DropTableStr = new StringBuilder();
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DropTableStr.Append("Drop Table [");
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DropTableStr.Append(DBTable);
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DropTableStr.Append("]");
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rtnStrColl.Add(DropTableStr.ToString());
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return rtnStrColl;
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}
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}
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}
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