/// <summary>
/// Sync column or table passed in the parameter
/// </summary>
/// <param name="table"></param>
/// <param name="column"></param>
/// <param name="noColumns">OUT parameter, returns 0 if table is being synched for the first time</param>
/// <returns>string message</returns>
public static string SyncColumn(MTable table, MColumn column, out int noColumns)
{
DatabaseMetaData md = new DatabaseMetaData();
String catalog = "";
String schema = DataBase.DB.GetSchema();
//get table name
string tableName = table.GetTableName();
noColumns = 0;
string sql = null;
//get columns of a table
DataSet dt = md.GetColumns(catalog, schema, tableName);
md.Dispose();
//for each column
for (noColumns = 0; noColumns < dt.Tables[0].Rows.Count; noColumns++)
{
string columnName = dt.Tables[0].Rows[noColumns]["COLUMN_NAME"].ToString().ToLower();
if (!columnName.Equals(column.GetColumnName().ToLower()))
{
continue;
}
//check if column is null or not
string dtColumnName = "is_nullable";
string value = "YES";
//if database is oracle
if (DatabaseType.IsOracle)
{
dtColumnName = "NULLABLE";
value = "Y";
}
bool notNull = false;
//check if column is null
if (dt.Tables[0].Rows[noColumns][dtColumnName].ToString() == value)
{
notNull = false;
}
else
{
notNull = true;
}
//............................
//if column is virtual column then alter table and drop this column
if (column.IsVirtualColumn())
{
sql = "ALTER TABLE " + table.GetTableName()
+ " DROP COLUMN " + columnName;
}
else
{
sql = column.GetSQLModify(table, column.IsMandatory() != notNull);
noColumns++;
break;
}
}
dt = null;
//while (rs.next())
//{
// noColumns++;
// String columnName = rs.getString ("COLUMN_NAME");
// if (!columnName.equalsIgnoreCase(column.getColumnName()))
// continue;
// // update existing column
// boolean notNull = DatabaseMetaData.columnNoNulls == rs.getInt("NULLABLE");
// if (column.isVirtualColumn())
// sql = "ALTER TABLE " + table.getTableName()
// + " DROP COLUMN " + columnName;
// else
// sql = column.getSQLModify(table, column.isMandatory() != notNull);
// break;
//}
//rs.close();
//rs = null;
// No Table
if (noColumns == 0)
{
sql = table.GetSQLCreate();
}
// No existing column
else if (sql == null)
{
if (column.IsVirtualColumn())
{
return("@IsVirtualColumn@");
}
sql = column.GetSQLAdd(table);
}
return(sql);
}
}// prepare
/// <summary>
/// Alert table
/// </summary>
/// <returns>int</returns>
///
override protected string DoIt()
{
string exception = "";
log.Info("C_Column_ID=" + p_AD_Column_ID);
if (p_AD_Column_ID == 0)
{
// return "";
throw new Exception("@No@ @AD_Column_ID@");
}
//IDbTransaction trx = ExecuteQuery.GerServerTransaction();
MColumn column = new MColumn(GetCtx(), p_AD_Column_ID, Get_Trx());
if (column.Get_ID() == 0)
{
throw new Exception("@NotFound@ @AD_Column_ID@" + p_AD_Column_ID);
}
MTable table = MTable.Get(GetCtx(), column.GetAD_Table_ID());
if (table.Get_ID() == 0)
{
throw new Exception("@NotFound@ @AD_Table_ID@" + column.GetAD_Table_ID());
}
// Find Column in Database
DatabaseMetaData md = new DatabaseMetaData();
String catalog = "";
String schema = DataBase.DB.GetSchema();
//get table name
string tableName = table.GetTableName();
int noColumns;
string sql = null;
//get columns of a table
DataSet dt = md.GetColumns(catalog, schema, tableName);
md.Dispose();
//for each column
for (noColumns = 0; noColumns < dt.Tables[0].Rows.Count; noColumns++)
{
string columnName = dt.Tables[0].Rows[noColumns]["COLUMN_NAME"].ToString().ToLower();
if (!columnName.Equals(column.GetColumnName().ToLower()))
{
continue;
}
//check if column is null or not
string dtColumnName = "is_nullable";
string value = "YES";
//if database is oracle
if (DatabaseType.IsOracle)
{
dtColumnName = "NULLABLE";
value = "Y";
}
bool notNull = false;
//check if column is null
if (dt.Tables[0].Rows[noColumns][dtColumnName].ToString() == value)
{
notNull = false;
}
else
{
notNull = true;
}
//............................
//if column is virtual column then alter table and drop this column
if (column.IsVirtualColumn())
{
sql = "ALTER TABLE " + table.GetTableName()
+ " DROP COLUMN " + columnName;
}
else
{
sql = column.GetSQLModify(table, column.IsMandatory() != notNull);
noColumns++;
break;
}
}
dt = null;
//while (rs.next())
//{
// noColumns++;
// String columnName = rs.getString ("COLUMN_NAME");
// if (!columnName.equalsIgnoreCase(column.getColumnName()))
// continue;
// // update existing column
// boolean notNull = DatabaseMetaData.columnNoNulls == rs.getInt("NULLABLE");
// if (column.isVirtualColumn())
// sql = "ALTER TABLE " + table.getTableName()
// + " DROP COLUMN " + columnName;
// else
// sql = column.getSQLModify(table, column.isMandatory() != notNull);
// break;
//}
//rs.close();
//rs = null;
// No Table
if (noColumns == 0)
{
sql = table.GetSQLCreate();
}
// No existing column
else if (sql == null)
{
if (column.IsVirtualColumn())
{
return("@IsVirtualColumn@");
}
sql = column.GetSQLAdd(table);
}
int no = 0;
if (sql.IndexOf("; ") == -1)
{
//no =
//ExecuteQuery.ExecuteNonQuery(sql, false, Get_Trx());
try
{
no = DataBase.DB.ExecuteQuery(sql, null, Get_Trx());
AddLog(0, DateTime.MinValue, Decimal.Parse(no.ToString()), sql);
}
catch (Exception ex)
{
exception = ex.Message;
}
//addLog (0, null, new BigDecimal(no), sql);
}
else
{
//string ss = "; ";
string[] statements = sql.Split(';');
for (int i = 0; i < statements.Length; i++)
{
int count = DataBase.DB.ExecuteQuery(statements[i].ToString(), null, Get_Trx());
AddLog(0, DateTime.MinValue, Decimal.Parse(count.ToString()), statements[i]);
no += count;
//ExecuteQuery.ExecuteNonQuery(statements[i].ToString());
}
}
if (no == -1)
{
string msg = "@Error@ ";
ValueNamePair pp = VAdvantage.Logging.VLogger.RetrieveError();
if (pp != null)
{
msg += exception + " - ";
}
msg += sql;
throw new Exception(msg);
}
string r = createFK();
return(sql + "; " + r);
} // doIt
