284 lines
8.0 KiB
C#

/*********************************************************************************************
* Copyright 2004 - Volian Enterprises, Inc. All rights reserved.
* Volian Enterprises - Proprietary Information - DO NOT COPY OR DISTRIBUTE
* ------------------------------------------------------------------------------
* $Workfile: vdb_Set.cs $ $Revision: 2 $
* $Author: Jsj $ $Date: 8/23/04 10:12a $
*
* $History: vdb_Set.cs $
*
* ***************** Version 2 *****************
* User: Jsj Date: 8/23/04 Time: 10:12a
* Updated in $/LibSource/VDB
* Fixed replace of single quote
*
* ***************** Version 1 *****************
* User: Kathy Date: 7/27/04 Time: 8:40a
* Created in $/LibSource/VDB
*********************************************************************************************/
using System;
using System.Data;
using System.Text;
using System.Collections.Specialized;
using System.Windows.Forms;
using VDB;
namespace VDB_Set
{
/// <summary>
/// Open, Create, Delete, Update functions for SET files (tables)
/// </summary>
public class vdb_Set:VDB_Base
{
public vdb_Set(String strPath):base(strPath)
{
// if no table (file name) specified, then default to SET (SET.DBF)
if (DBTable.Equals(""))
DBTable = "SET";
}
// Build the SQL command needed to update a row in the SET file
public override string GetRecUpdateStr(DataTable tbl,DataRow row)
{
int j = 0;
bool FirstOne = true;
StringBuilder updateStr = new StringBuilder();
StringBuilder LikeRecID = new StringBuilder();
bool NullEntry = false;
updateStr.Append("UPDATE [");
updateStr.Append(DBTable);
updateStr.Append("] SET");
foreach (DataColumn col in tbl.Columns)
{
bool isString = (col.DataType == Type.GetType("System.String"));
if (col.ColumnName.Equals("ENTRY") && row.ItemArray[j].ToString().Equals(""))
{
NullEntry = true;
j++;
continue;
}
if (col.ColumnName.Equals("RECID"))
{
LikeRecID.Append("___"); // ignore the first 3 positions
LikeRecID.Append(row.ItemArray[j].ToString(),3,5);
}
if (FirstOne)
{
updateStr.Append(" [");
FirstOne = false;
}
else
updateStr.Append(", [");
updateStr.Append(col.ColumnName);
updateStr.Append("]=");
if (row.ItemArray[j].ToString().Equals(""))
{
updateStr.Append("NULL");
}
else if (isString)
{
String tmpstr = row.ItemArray[j].ToString();
updateStr.Append("'");
tmpstr = tmpstr.Replace("'","''");
updateStr.Append(tmpstr);
updateStr.Append("'");
}
else if (col.DataType == Type.GetType("System.DateTime"))
{
int jj;
String tmpstr = row.ItemArray[j].ToString();
updateStr.Append("'");
jj=tmpstr.IndexOf(" ");
if (jj<0) jj = tmpstr.Length;
updateStr.Append(tmpstr.Substring(0,jj));
updateStr.Append("'");
}
j++;
}
if (NullEntry)
{
// So that we can change the RECID number on the first entry
updateStr.Append(" WHERE [ENTRY] IS NULL");
}
else
{
updateStr.Append(" WHERE [RECID] LIKE '");
updateStr.Append(LikeRecID.ToString());
updateStr.Append("' AND [ENTRY] IS NOT NULL");
}
return updateStr.ToString();
}
// Build the SQL command needed to insert a row in the SET file
public override string GetRecInsertStr(DataTable tbl,DataRow row)
{
int j = 0;
StringBuilder insrtStr = new StringBuilder();
StringBuilder valueStr = new StringBuilder();
insrtStr.Append("INSERT INTO [");
insrtStr.Append(DBTable);
insrtStr.Append("] (");
valueStr.Append(" VALUES (");
foreach (DataColumn col in tbl.Columns)
{
bool isString = (col.DataType == Type.GetType("System.String"));
insrtStr.Append("[");
insrtStr.Append(col.ColumnName);
insrtStr.Append("],");
if (row.ItemArray[j].ToString().Equals(""))
{
valueStr.Append("NULL");
}
else if (isString)
{
String tmpstr = row.ItemArray[j].ToString();
tmpstr = tmpstr.Replace("'","''");
valueStr.Append("'");
valueStr.Append(tmpstr);
valueStr.Append("'");
}
else if (col.DataType == Type.GetType("System.DateTime"))
{
int jj;
String tmpstr = row.ItemArray[j].ToString();
valueStr.Append("'");
jj = tmpstr.IndexOf(" ");
if (jj<0) jj=tmpstr.Length;
valueStr.Append(tmpstr.Substring(0,jj));
valueStr.Append("'");
}
else
{
valueStr.Append(row.ItemArray[j].ToString());
}
valueStr.Append(",");
j++;
}
insrtStr = insrtStr.Replace(',',')',insrtStr.Length-1,1);
valueStr = valueStr.Replace(',',')',valueStr.Length-1,1);
insrtStr.Append(valueStr.ToString());
return insrtStr.ToString();
}
// Build the SQL command needed to delete a row in the SET file
public override string RecDeleteStr(DataTable tbl,DataRow row)
{
int j = 0;
String RecIDStr = "";
String NumberStr = "";
StringBuilder deleteStr = new StringBuilder();
deleteStr.Append("DELETE FROM [");
deleteStr.Append(DBTable);
deleteStr.Append("] WHERE ");
row.RejectChanges();
foreach (DataColumn col in tbl.Columns)
{
if (col.ColumnName.Equals("NUMBER"))
{
NumberStr = row.ItemArray[j].ToString();
NumberStr = NumberStr.Replace("'","''");
}
else if (col.ColumnName.Equals("RECID"))
{
RecIDStr = row.ItemArray[j].ToString();
}
j++;
}
deleteStr.Append("[NUMBER] = '");
deleteStr.Append(NumberStr);
deleteStr.Append("' AND [RECID] = '");
deleteStr.Append(RecIDStr);
deleteStr.Append("' AND [ENTRY] IS NOT NULL");
return deleteStr.ToString();
}
// Build a list of SQL commands needed to create a new SET table (file)
// and add the first row
public override StringCollection CreateTableStatements(string strTblName)
{
StringCollection rtnStrColl = new StringCollection();
StringBuilder createStr = new StringBuilder();
// StringBuilder firstRecStr = new StringBuilder();
if (strTblName.Length > 0) // was a table name passd in?
{
DBTable = strTblName;
}
if (DBTable.Equals(""))
{
MessageBox.Show("Trying to Create a new Table without a Name","Create Table Error");
return rtnStrColl;
}
// Build the command that creates a new SET table (file)
createStr.Append("CREATE TABLE [");
createStr.Append(DBTable);
createStr.Append("] ");
createStr.Append("([TITLE] Char(250), [NUMBER] Char(20), [FORMAT] Char(1), ");
createStr.Append("[SUBDIR] Char(1), [ENTRY] Char(30), [RECID] Char(8), ");
createStr.Append("[PROCCODE] Char(1), [DATE] Date, [TIME] Char(5), ");
createStr.Append("INITIALS Char(5), SERIES Char(100))");
// // Build the command that adds the first (blank) record
// // with the RECID initialize to 00000001
// firstRecStr.Append("INSERT INTO [");
// firstRecStr.Append(DBTable);
// firstRecStr.Append("] ([RECID]) VALUES ('00000001')");
rtnStrColl.Add(createStr.ToString()); // add create table
// rtnStrColl.Add(firstRecStr.ToString()); // add inserst first record
return rtnStrColl;
}
// Build a list of SQL commands needed to create the first data row
public override StringCollection CreateFirstRecordStatement(string strTblName)
{
StringCollection rtnStrColl = new StringCollection();
StringBuilder firstRecStr = new StringBuilder();
// Build the command that adds the first (blank) record
// with the RECID initialize to 00000001
firstRecStr.Append("INSERT INTO [");
firstRecStr.Append(DBTable);
firstRecStr.Append("] ([RECID]) VALUES ('00000001')");
rtnStrColl.Add(firstRecStr.ToString()); // add inserst first record
return rtnStrColl;
}
// return a list of SQL commands that will drop (delete) a database table (file)
public override StringCollection DeleteTableStatements(string strTblName)
{
StringCollection rtnStrColl = new StringCollection();
StringBuilder DropTableStr = new StringBuilder();
DropTableStr.Append("Drop Table [");
DropTableStr.Append(DBTable);
DropTableStr.Append("]");
rtnStrColl.Add(DropTableStr.ToString());
return rtnStrColl;
}
}
}