core/sql/parser/StmtDDLAlterTableAlterColumn.h

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#ifndef STMTDDLALTERTABLEALTERCOLUMN_H
#define STMTDDLALTERTABLEALTERCOLUMN_H
/* -*-C++-*-
 *****************************************************************************
 *
 * File:         StmtDDLAlterTableAlterColumn.h
 * Description:  class for Alter Table <table-name> alter column  
 *               DDL statements (datatype and default clauses)
 *
 *               The methods in this class are defined either in this
 *               header file or the source file StmtDDLAlter.C.
 *
 *
 * Created:     
 * Language:     C++
 *
 *
 *
 *
 *****************************************************************************
 */


#include "StmtDDLAlterTable.h"

// -----------------------------------------------------------------------
// contents of this file
// -----------------------------------------------------------------------
class StmtDDLAlterTableAlterColumnDefaultValue;
class StmtDDLAlterTableAlterColumnDatatype;

// -----------------------------------------------------------------------
// forward references
// -----------------------------------------------------------------------
// None.

// -----------------------------------------------------------------------
// definition of class StmtDDLAlterTableAlterColumn
// -----------------------------------------------------------------------
class StmtDDLAlterTableAlterColumn : public StmtDDLAlterTable
{
public:

  // constructor
  StmtDDLAlterTableAlterColumn( OperatorTypeEnum operatorType
                                , const NAString &columnName
                                , ElemDDLNode *pColDefault
                                , CollHeap    *heap = PARSERHEAP());
  
    // virtual destructor
  virtual ~StmtDDLAlterTableAlterColumn();

  // accessors
  inline NAString getColumnName();

  // method for tracing
  virtual const NAString getText() const;

  
private: 
  // column name
  NAString columnName_;

  //
  // please do not use the following methods
  //

  StmtDDLAlterTableAlterColumn();   // DO NOT USE
  StmtDDLAlterTableAlterColumn(const StmtDDLAlterTableAlterColumn &);   // DO NOT USE
  StmtDDLAlterTableAlterColumn & operator=(const StmtDDLAlterTableAlterColumn &);  // DO NOT USE


}; // class StmtDDLAlterTableAlterColumn


inline NAString 
StmtDDLAlterTableAlterColumn::getColumnName()
{
  return columnName_;
}

// -----------------------------------------------------------------------
// definition of class StmtDDLAlterTableAlterColumnDefaultValue
// -----------------------------------------------------------------------
class StmtDDLAlterTableAlterColumnDefaultValue : public StmtDDLAlterTableAlterColumn
{
public:

  // constructor
  StmtDDLAlterTableAlterColumnDefaultValue( const NAString &columnName
                                          , ElemDDLNode *pColDefault
                                          , CollHeap    *heap = PARSERHEAP());

  // virtual destructor
  virtual ~StmtDDLAlterTableAlterColumnDefaultValue();

  // cast
  virtual StmtDDLAlterTableAlterColumnDefaultValue * castToStmtDDLAlterTableAlterColumnDefaultValue();

  // method for tracing
  virtual const NAString getText() const;
  
private: 

  //
  // please do not use the following methods
  //

  StmtDDLAlterTableAlterColumnDefaultValue();   // DO NOT USE
  StmtDDLAlterTableAlterColumnDefaultValue(const StmtDDLAlterTableAlterColumnDefaultValue &);   // DO NOT USE
  StmtDDLAlterTableAlterColumnDefaultValue & operator=(const StmtDDLAlterTableAlterColumnDefaultValue &);  // DO NOT USE


}; // class StmtDDLAlterTableAlterColumnDefaultValue

// -----------------------------------------------------------------------
// definition of class StmtDDLAlterTableAlterColumnDatatype
// -----------------------------------------------------------------------
class StmtDDLAlterTableAlterColumnDatatype : public StmtDDLAlterTableAlterColumn
{
public:

  // constructor
  StmtDDLAlterTableAlterColumnDatatype( ElemDDLNode * pColumnToAlter
                                        ,CollHeap    * heap = PARSERHEAP());

    // virtual destructor
  virtual ~StmtDDLAlterTableAlterColumnDatatype();

  // cast
  virtual StmtDDLAlterTableAlterColumnDatatype * castToStmtDDLAlterTableAlterColumnDatatype();

  // method for tracing
  virtual const NAString getText() const;

  inline ElemDDLNode * getColToAlter() { return pColumnToAlter_; };
  inline ElemDDLColDefArray & getColDefArray() { return columnDefArray_; };

private: 

  // column definition
  ElemDDLNode * pColumnToAlter_;

  // list of (only one) column definition
  ElemDDLColDefArray columnDefArray_;

  //
  // please do not use the following methods
  //

  StmtDDLAlterTableAlterColumnDatatype();   // DO NOT USE
  StmtDDLAlterTableAlterColumnDatatype(const StmtDDLAlterTableAlterColumnDatatype &);   // DO NOT USE
  StmtDDLAlterTableAlterColumnDatatype & operator=(const StmtDDLAlterTableAlterColumnDatatype &);  // DO NOT USE


}; // class StmtDDLAlterTableAlterColumnDatatype

// -----------------------------------------------------------------------
// definition of class StmtDDLAlterTableAlterColumnRename
// -----------------------------------------------------------------------
class StmtDDLAlterTableAlterColumnRename : public StmtDDLAlterTableAlterColumn
{
public:
  
  // constructor
  StmtDDLAlterTableAlterColumnRename( const NAString &columnName,
                                      const NAString &renamedColumnName,
                                      CollHeap    * heap = PARSERHEAP());
  
  // virtual destructor
  virtual ~StmtDDLAlterTableAlterColumnRename();
  
  // cast
  virtual StmtDDLAlterTableAlterColumnRename * castToStmtDDLAlterTableAlterColumnRename();
  
  // accessors
  NAString getRenamedColumnName() { return renamedColumnName_; }
  const NAString getRenamedColumnName() const { return renamedColumnName_; }
  
  // method for tracing
  virtual const NAString getText() const;
  
private: 
  // column name
  NAString renamedColumnName_;
  
  //
  // please do not use the following methods
  //
  
  StmtDDLAlterTableAlterColumnRename();   // DO NOT USE
  StmtDDLAlterTableAlterColumnRename(const StmtDDLAlterTableAlterColumnRename &);   // DO NOT USE
  StmtDDLAlterTableAlterColumnRename & operator=(const StmtDDLAlterTableAlterColumnRename &);  // DO NOT USE
  
}; // class StmtDDLAlterTableAlterColumnRename

#endif //STMTDDLALTERTABLEALTERCOLUMN_H