protected internal static void iterateStmt(TCustomSqlStatement stmt)
{
// System.out.println(stmt.sqlstatementtype.toString());
for (int i = 0;i < stmt.tables.size();i++)
{
gudusoft.gsqlparser.nodes.TTable table = stmt.tables.getTable(i);
string table_name = table.Name;
Console.WriteLine("Analyzing: " + table_name + " <- " + stmt.sqlstatementtype);
for (int j = 0; j < table.LinkedColumns.size(); j++)
{
TObjectName objectName = table.LinkedColumns.getObjectName(j);
string column_name = table_name + "." + objectName.ColumnNameOnly.ToLower();
if (!objectName.TableDetermined)
{
column_name = "?." + objectName.ColumnNameOnly.ToLower();
}
Console.WriteLine("Analyzing: " + column_name + " in " + stmt.sqlstatementtype + " " + objectName.Location);
}
}
for (int i = 0;i < stmt.Statements.size();i++)
{
iterateStmt(stmt.Statements.get(i));
}
}
public static Table createTableFromCreateDML(TTable table)
{
if (ModelBindingManager.getCreateModel(table) is Table)
{
return((Table)ModelBindingManager.getCreateModel(table));
}
Table tableModel = new Table(table);
ModelBindingManager.bindCreateModel(table, tableModel);
return(tableModel);
}
public static QueryTable createQueryTable(TTable table)
{
QueryTable tableModel = null;
if (table.CTE != null)
{
if (ModelBindingManager.getModel(table.CTE) is QueryTable)
{
return((QueryTable)ModelBindingManager.getModel(table.CTE));
}
tableModel = new QueryTable(table);
ModelBindingManager.bindModel(table.CTE, tableModel);
}
else if (table.Subquery != null && table.Subquery.ResultColumnList != null)
{
if (ModelBindingManager.getModel(table.Subquery.ResultColumnList) is QueryTable)
{
return((QueryTable)ModelBindingManager.getModel(table.Subquery.ResultColumnList));
}
tableModel = new QueryTable(table);
ModelBindingManager.bindModel(table.Subquery.ResultColumnList, tableModel);
}
else
{
if (ModelBindingManager.getModel(table) is QueryTable)
{
return((QueryTable)ModelBindingManager.getModel(table));
}
tableModel = new QueryTable(table);
ModelBindingManager.bindModel(table, tableModel);
}
return(tableModel);
}
public static void doIt()
{
TGSqlParser sqlparser = new TGSqlParser(EDbVendor.dbvmssql);
sqlparser.sqltext = "select employee_id,last_name,sal\n" + "from employees\n" + "where department_id = 90\n" + "group by employee_id having sal>10\n" + "order by last_name;";
sqlparser.parse();
TSelectSqlStatement select = (TSelectSqlStatement)sqlparser.sqlstatements.get(0);
gudusoft.gsqlparser.nodes.TTable table = select.tables.getTable(0);
TObjectName o;
Console.WriteLine("Select statement, find out what clause a TObjectName belongs to:");
for (int i = 0; i < table.LinkedColumns.size(); i++)
{
o = table.LinkedColumns.getObjectName(i);
Console.WriteLine(o.ToString() + "\t\t\tlocation:" + o.Location);
}
sqlparser.sqltext = "insert into emp e1 (e1.lastname,job) values('scott',10);";
sqlparser.parse();
TInsertSqlStatement insert = (TInsertSqlStatement)sqlparser.sqlstatements.get(0);
table = insert.tables.getTable(0);
Console.WriteLine("\n\nInsert statement, find out what clause a TObjectName belongs to:");
for (int i = 0; i < table.LinkedColumns.size(); i++)
{
o = table.LinkedColumns.getObjectName(i);
Console.WriteLine(o.ToString() + "\t\t\tlocation:" + o.Location);
}
sqlparser.sqltext = "update employees\n" + "set department_ID = 70\n" + "where employee_id = 113;";
sqlparser.parse();
TUpdateSqlStatement update = (TUpdateSqlStatement)sqlparser.sqlstatements.get(0);
table = update.tables.getTable(0);
Console.WriteLine("\n\nUpdate statement, find out what clause a TObjectName belongs to:");
for (int i = 0; i < table.LinkedColumns.size(); i++)
{
o = table.LinkedColumns.getObjectName(i);
Console.WriteLine(o.ToString() + "\t\t\tlocation:" + o.Location);
}
sqlparser.sqltext = "delete from employees E\n" + "where employee_id = \n" + "(select employee_sal\n" + "from emp_history\n" + "where employee_id = e.employee_id);";
sqlparser.parse();
TDeleteSqlStatement delete = (TDeleteSqlStatement)sqlparser.sqlstatements.get(0);
table = delete.tables.getTable(0);
Console.WriteLine("\n\nDelete statement, find out what clause a TObjectName belongs to:");
for (int i = 0; i < table.LinkedColumns.size(); i++)
{
o = table.LinkedColumns.getObjectName(i);
Console.WriteLine(o.ToString() + "\t\t\tlocation:" + o.Location);
}
// subquery in where clause
select = (TSelectSqlStatement)delete.Statements.get(0);
gudusoft.gsqlparser.nodes.TTable table1 = select.tables.getTable(0);
Console.WriteLine("\nSubquery in delete statement, find out what clause a TObjectName belongs to:");
for (int i = 0; i < table1.LinkedColumns.size(); i++)
{
o = table1.LinkedColumns.getObjectName(i);
Console.WriteLine(o.ToString() + "\t\t\tlocation:" + o.Location);
}
}
