mcoxml.h

extremeDB s sample code,useful for you

/*******************************************************************
 *                                                                 *
 *  mcoxml.h                                                       *
 *                                                                 *
 *  This file is a part of the eXtremeDB source code               *
 *  Copyright (c) 2001-2006 McObject LLC                           * 
 *  All Rights Reserved                                            *
 *                                                                 *
 *******************************************************************/

#ifndef MCO_XML_H__
#define MCO_XML_H__

/*
 * ++
 * 
 * PROJECT:   eXtremeDB(tm) (c) McObject LLC
 *
 * SUBSYSTEM: XML support
 *
 * MODULE:    MCOXML.H
 *
 * ABSTRACT:  Header file of data xml i/o
 *
 *
 * VERSION:   1.0
 *
 * HISTORY:
 *            1.0- 1 AD     08-Aug-2002 Created it was (xml output)
 *                 2 AD     19-Aug-2002 added Base64 encoding
 *                 3 AD     28-Aug-2002 XML parsing was created
 *                 4 AD     05-Sep-2002 Added flagsfor string coding
 *                   TP     27-Sep-2003 Alternative XML representation
 *			
 *
 * --
 */

#ifdef __cplusplus
extern "C" { 
#endif

 #include "mco.h"

/*
 * Error codes for XML subsystem
 */
#define MCO_E_XML_INVINT      MCO_ERR_XML_W+1 /* invalid integer                                */
#define MCO_E_XML_INVFLT      MCO_ERR_XML_W+2 /* invalid float                                  */
#define MCO_E_XML_INTOVF      MCO_ERR_XML_W+3 /* integer overflow                               */
#define MCO_E_XML_INVBASE     MCO_ERR_XML_W+4 /* invalid base for quad (10)                     */
#define MCO_E_XML_BUFSMALL    MCO_ERR_XML_W+5 /* buffer too small for double                    */
                                              /* in fixed point format                          */
#define MCO_E_XML_VECTUNSUP   MCO_ERR_XML_W+6 /* unsupported base type for vector               */
#define MCO_E_XML_INVPOLICY   MCO_ERR_XML_W+7 /* invalid xml policy value                       */

#define MCO_E_XML_INVCLASS    MCO_ERR_XML_W+21/* obj class & xml class not the same             */
#define MCO_E_XML_NO_OID      MCO_ERR_XML_W+22/* first field in xml object MUST be OID          */
#define MCO_E_XML_INVOID      MCO_ERR_XML_W+23/* invalid data in OID field (hex code)           */
#define MCO_E_XML_INVFLDNAME  MCO_ERR_XML_W+24/* invalid field name                             */
#define MCO_E_XML_FLDNOTFOUND MCO_ERR_XML_W+25/* specified field was not found                  */
#define MCO_E_XML_INVENDTAG   MCO_ERR_XML_W+26/* invalid closing tag name                       */
#define MCO_E_XML_UPDID       MCO_ERR_XML_W+27/* cannot update OID or AUTOID                    */
#define MCO_E_XML_INVASCII    MCO_ERR_XML_W+28/* invalid xml coding in ascii string             */
#define MCO_E_XML_INCOMPL     MCO_ERR_XML_W+29/* xml data incomplete (closing tag not found)    */
#define MCO_E_XML_ARRSMALL    MCO_ERR_XML_W+30/* array is not large enough to hold all elements */
#define MCO_E_XML_INVARREL    MCO_ERR_XML_W+31/* invalid name of array element                  */
#define MCO_E_XML_EXTRAXML    MCO_ERR_XML_W+32/* extra xml found after parsing                  */
#define MCO_E_XML_NOTWF       MCO_ERR_XML_W+33/* not well-formed xml                            */

/*
 * Data format policy
 */
typedef enum MCO_NUM_BASE_E 
{
    MCO_NUM_OCT =  8,
    MCO_NUM_DEC = 10,
    MCO_NUM_HEX = 16 
} 
MCO_NUM_BASE;

typedef enum MCO_TEXT_CODING_E 
{
  MCO_TEXT_ASCII  = 1,
  MCO_TEXT_BINHEX = 2,
  MCO_TEXT_BASE64 = 3 
} 
MCO_TEXT_CODING;

typedef enum MCO_FLOAT_FORMAT_E 
{
  MCO_FLOAT_FIXED    = 1,
  MCO_FLOAT_EXPONENT = 2 
} 
MCO_FLOAT_FORMAT;

typedef struct mco_xml_policy_t_ 
{
  MCO_NUM_BASE      int_base;
  MCO_NUM_BASE      quad_base;
  MCO_TEXT_CODING   text_coding;
  MCO_TEXT_CODING   blob_coding;
  MCO_FLOAT_FORMAT  float_format;
  mco_bool          indent; 
  mco_bool          ignore_field;  /* ignore field in xml, that is not in class         */
  mco_bool          encode_spec;   /* encode chars with code < 32, except LF            */
  mco_bool          encode_lf;     /* encode line feeds                                 */
  mco_bool          encode_nat;    /* encode national chars (code > 127)                */
  mco_bool          truncate_sp;   /* truncate trailing spaces in chars                 */
  mco_bool          use_xml_attrs; /* alternative XML representation, using atributes   */
  mco_bool          ignore_autoid; /* ignore autoid value in put and create operations  */
  mco_bool          ignore_autooid;/* pass auto_oid in get/put/create operations        */
} 
mco_xml_policy_t;

void    mco_xml_get_default_policy(/*OUT*/  mco_xml_policy_t * p);
MCO_RET mco_xml_get_policy(mco_trans_h t, /*OUT*/ mco_xml_policy_t * p);
MCO_RET mco_xml_set_policy(mco_trans_h t, const mco_xml_policy_t * p);

MCO_RET  mco_db_xml_export ( mco_trans_h t, void * stream_handle, mco_stream_write output_stream_writer );
MCO_RET  mco_db_xml_import ( mco_trans_h t, void * stream_handle, mco_stream_read  input_stream_reader  );

#ifdef __cplusplus
}
#endif


#endif