/**********************************************************************
 *
 * comtypes.h -- 
 * Copyright (C) 1999  The New Zealand Digital Library Project
 *
 * A component of the Greenstone digital library software
 * from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: comtypes.h 871 2000-01-25 22:45:01Z sjboddie $
 *
 *********************************************************************/


#ifndef COMTYPES_H
#define COMTYPES_H

#include "gsdlconf.h"
#include "text_t.h"

#if defined(GSDL_USE_OBJECTSPACE)
#  include <ospace\std\vector>
#  include <ospace\std\list>
#  include <ospace\std\map>
#elif defined(GSDL_USE_STL_H)
#  include <vector.h>
#  include <list.h>
#  include <map.h>
#else
#  include <vector>
#  include <list>
#  include <map>
#endif


enum comerror_t {noError, authenticationFailure, protocolError, 
		 configurationError, systemProblem};
text_t get_comerror_string (comerror_t err);

// ShortColInfo ::= SEQUENCE {
//   name GeneralString,
//   host GeneralString,
//   port INTEGER
// }
struct ShortColInfo_t {
  void clear ();
  ShortColInfo_t () {clear();}

  text_t name;
  text_t host;
  int port;
};


// ColInfoResponse ::= SEQUENCE {
//   shortInfo      [0]  IMPLICIT ShortCollectionInfo,
//   isPublic       [2]  IMPLICIT BOOLEAN,    -- whether has anonymous access
//   isBeta         [3]  IMPLICIT BOOLEAN,    -- beta if still under development
//   buildDate      [4]  IMPLICIT GeneralizedTime,
//   ccsCols        [5]  IMPLICIT StringSet,  -- collections that form cross-col search
//   languages      [6]  IMPLICIT StringSet,  -- languages in the collection
//   numDocs        [7]  IMPLICIT INTEGER,
//   numWords       [8]  IMPLICIT INTEGER OPTIONAL,
//   numBytes       [9]  IMPLICIT INTEGER OPTIONAL
//   collectionmeta [10]  IMPLICIT StringSet
//   format         [11] IMPLICIT StringSet
//   building       [12] IMPLICIT StringSet
//   receptionist   [13] IMPLICIT GeneralString
// }
struct ColInfoResponse_t {
  void clear ();
  ColInfoResponse_t () {clear();}

  ShortColInfo_t shortInfo;
  bool isPublic;
  bool isBeta;
  unsigned long buildDate;
  text_tarray ccsCols;    // empty if collection does not use cross-collection searching
  text_tarray languages;
  unsigned long numDocs;  // 0 if not known
  unsigned long numWords; // 0 if not known
  unsigned long numBytes; // 0 if not known
  text_tmap collectionmeta;
  text_tmap format;
  text_tmap building;
  text_t receptionist;
};


// -- filter options which might be supported for the QueryFilter
// --
// -- onePerQuery StartResults   integer
// -- onePerQuery EndResults     integer
// -- onePerQuery QueryType      enumerated (boolean, ranked)
// -- onePerTerm  Term           string ???
// -- onePerTerm  Casefold       boolean
// -- onePerTerm  Stem           boolean
// -- onePerTerm  Index          enumerated
// -- onePerTerm  Subcollection  enumerated
// --
// -- filter options which might be supported for the BrowseFilter
// --
// -- onePerQuery StartResults   integer
// -- onePerQuery EndResults     integer
// -- onePerQuery ParentNode     string ("" will return the browsing available)
// --
// -- The NullFilter always returns the set it was given, it doesn't have
// -- any options

// InfoFiltersResponse ::= SEQUENCE {
//   filterNames StringSet
// }
struct InfoFiltersResponse_t {
  void clear ();

  text_tset filterNames;
};

// InfoFilterOptionsRequest ::= SEQUENCE {
//   filterName GeneralString
// }
struct InfoFilterOptionsRequest_t {
  void clear ();

  text_t filterName;
};

// FilterOption ::= SEQUENCE {
//   name         GeneralString,
//   type         ENUMERATED {booleant(0), integert(1), enumeratedt(2), stringt(3)},
//   repeatable   ENUMERATED {onePerQuery(0), onePerTerm(1), nPerTerm(2)},
//   defaultValue GeneralString,
//   -- the interpretation of the validValues depends on the type
//   -- for boolean: the first value is the false value, the second is true value
//   -- for integer: the first value is the minimum, the second the maximum
//   -- for enumerated: all values a listed
//   -- for string: this value is ignored
//   validValues  StringSequence
// }
struct FilterOption_t {
  void clear ();
  void check_defaultValue ();
  FilterOption_t () {clear();}

  text_t name;

  enum type_t {booleant=0, integert=1, enumeratedt=2, stringt=3};
  type_t type;

  enum repeatable_t {onePerQuery=0, onePerTerm=1, nPerTerm=2};
  repeatable_t repeatable;

  text_t defaultValue;
  text_tarray validValues;
};

bool operator==(const FilterOption_t &x, const FilterOption_t &y);
bool operator<(const FilterOption_t &x, const FilterOption_t &y);


typedef map<text_t, FilterOption_t, lttext_t> FilterOption_tmap;


// InfoFilterOptionsResponse ::= SEQUENCE {
//   filterOptions SET OF FilterOption
// }
struct InfoFilterOptionsResponse_t {
  void clear ();

  FilterOption_tmap filterOptions;
};


// OptionValue ::= SEQUENCE {
//   name  GeneralString,
//   value GeneralString
// }
struct OptionValue_t {
  void clear ();

  text_t name;
  text_t value;
};

typedef vector<OptionValue_t> OptionValue_tarray;


// -- Terms are presented in the same order that they are requested,
// -- any information relating to the terms is in reference to the
// -- index specified for that term.
//
// FilterRequest ::= SEQUENCE {
//   filterName          [0] GeneralString,
//   filterOptions       [1] IMPLICIT SEQUENCE OF OptionValue,
//   docSet              [2] IMPLICIT StringSequence, -- the OID "" represents everything
//   filterResultOptions [3] IMPLICIT BIT STRING {termFreq(0), matchTerms(1), OID(2), 
//                                                subCol(3), ranking(4), docFreq(5), 
//                                                metadata(6)}
// 
//   -- the next set of options are for the metadata request, 
//   -- they can be left blank if metadata is not wanted
//   requestParams       [4] IMPLICIT GeneralString, -- used to negotiate the metadata content
//   refParams           [5] IMPLICIT GeneralString, -- used to decide whether to return a 
//                                                   -- reference to the data or the actual data
//   fields              [6] IMPLICIT StringSet
//   getParents          [7] IMPLICIT BOOLEAN        -- gets metadata of all parents too
// }
#define FRtermFreq   1
#define FRmatchTerms 2
#define FROID        4
#define FRsubCol     8
#define FRranking    16
#define FRdocFreq    32
#define FRmetadata   64

struct FilterRequest_t {
  void clear ();
  FilterRequest_t () {clear();}

  text_t filterName;
  OptionValue_tarray filterOptions;
  text_tarray docSet;        // empty if not used
  int filterResultOptions; // use the FR* defines above

  text_t requestParams; // empty if not used
  text_t refParams;     // empty if not used
  text_tset fields;   // empty if not used
  bool getParents;      // defaults to false
};


// TermInfo ::= SEQUENCE {
//   term       [0] GeneralString,
//   freq       [1] IMPLICIT INTEGER,       -- 0 if not requested
//   matchTerms [2] IMPLICIT StringSequence -- empty if not requested
// }
struct TermInfo_t {
  void clear ();
  TermInfo_t () {clear();}

  text_t term;
  int freq; // 0 if not requested
  text_tarray matchTerms; // empty if not requested
};

typedef vector<TermInfo_t> TermInfo_tarray;


// MetadataInfo ::= SEQUENCE {
//   params  [0] IMPLICIT GeneralString,
//   isRef   [1] IMPLICIT BOOLEAN,
//   values  [3] IMPLICIT SEQUENCE OF GeneralString,
//   name    [4] IMPLICIT GeneralString
// }
struct MetadataInfo_t {
  text_t params;
  bool isRef;
  text_tarray values;
  MetadataInfo_t *parent;

  void clear ();
  MetadataInfo_t ();
  MetadataInfo_t (const MetadataInfo_t &x); // copy constructor
  ~MetadataInfo_t ();
  MetadataInfo_t &operator=(const MetadataInfo_t &x);
};

typedef map<text_t, MetadataInfo_t, lttext_t> MetadataInfo_tmap;

// ResultDocInfo ::= SEQUENCE {
//   OID      [0] IMPLICIT GeneralString,
//   ranking  [1] IMPLICIT INTEGER,             -- 0 if not requested, range 0-10000
//   docFreq  [2] IMPLICIT SEQUENCE OF INTEGER, -- empty if not requested
//   metadata [3] IMPLICIT SEQUENCE OF MetadataInfo, -- no longer a SEQUENCE (SET maybe??)
//   classifier_metadata_type   [4] IMPLICIT GeneralString,       -- empty if not requested
//   classifier_metadata_offset [5] IMPLICIT INTEGER,             -- 0 if not requested
// }
struct ResultDocInfo_t {
  void clear ();
  ResultDocInfo_t () {clear();}

  text_t OID;
  int result_num;          // place in results list
  int ranking;             // 0 if not requested (real ranking*10000)
  int num_terms_matched;   // not available on all versions of mg
  int num_phrase_match;    // not available on all versions of mg
  vector<int> docFreq;           // empty if not requested
  MetadataInfo_tmap metadata;    // empty if not requested
  text_t classifier_metadata_type;        // empty if not requested
  int    classifier_metadata_offset;      // 0 if not requested
  ResultDocInfo_t &operator=(const ResultDocInfo_t &x);
};

typedef vector<ResultDocInfo_t> ResultDocInfo_tarray;


// FilterResponse ::= SEQUENCE {
//   numDocs   [0] IMPLICIT INTEGER,
//   isApprox  [1] ENUMERATED {Exact(0), Approximate(1), MoreThan(2)}, -- whether numDocs is approximate
//   termInfo  [2] IMPLICIT SEQUENCE OF TermInfo,                      -- empty if not required
//   docInfo   [3] IMPLICIT SEQUENCE OF ResultDocInfo                  -- empty if not required
// }

enum isapprox {Exact=0, Approximate=1, MoreThan=2};

struct FilterResponse_t {
  void clear ();
  FilterResponse_t () {clear();}

  int numDocs;
  isapprox isApprox;
  TermInfo_tarray termInfo; // empty if not requested
  ResultDocInfo_tarray docInfo; // empty if not requested

  FilterResponse_t &operator=(const FilterResponse_t &x);
};


// DocumentRequest ::= SEQUENCE {
//   OID       GeneralString,
//   docType   GeneralString,
//   docFormat GeneralString
// }
struct DocumentRequest_t {
  void clear ();
  DocumentRequest_t () {clear();}

  text_t OID;
  text_t docType;
  text_t docFormat;
};


// DocumentResponse ::= SEQUENCE {
//   doc OCTET STRING
// }

struct DocumentResponse_t {
  void clear ();
  DocumentResponse_t () {clear();}

  text_t doc;
};


#endif