149 lines
4.0 KiB
C++
149 lines
4.0 KiB
C++
/* ---------------------------------------------------------------------------
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Nullsoft Database Engine
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--------------------
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codename: Near Death Experience
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--------------------------------------------------------------------------- */
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/* ---------------------------------------------------------------------------
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Scanner Class Prototypes
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Android (linux) implementation
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--------------------------------------------------------------------------- */
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#ifndef __SCANNER_H
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#define __SCANNER_H
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#include "../nde.h"
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#include "record.h"
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#include "../index.h"
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#include <nu/Vector.h>
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#include <nu/ValueSet.h>
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#include "../LinkedList.h"
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class Table;
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class Index;
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class Scanner : public LinkedListEntry
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{
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public:
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Record *GetRecord(int Idx);
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Scanner(Table *parentTable);
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void IndexModified(void);
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Index *GetIndex() { return index; }
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Index *index; // TODO: make protected
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protected:
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~Scanner();
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Table *pTable;
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bool iModified;
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typedef Vector<StringField *> SearchStrings;
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SearchStrings search_strings;
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typedef ValueSet<unsigned char> SearchFields;
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SearchFields search_fields;
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bool search_any;
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void GetCurrentRecord(void);
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bool MatchFilters(void);
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bool MatchSearches();
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bool MatchSearch(const SearchFields &fields, StringField *search_field);
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//BOOL MatchJoins(void);
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bool CheckFilters(void);
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void CacheLastLocate(int Id, int From, Field *field, Index *i, int j);
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static int Query_LookupToken(const char *token);
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void Query_CleanUp(void);
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void Query_SyntaxError(int c);
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public:
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static int Query_GetNextToken(const char *p, int *size, char **token, int tokentable=0);
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static const char *Query_EatSpace(const char *p);
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static char *Query_ProbeSpace(char *p);
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static const char *Query_ProbeNonAlphaNum(const char *p);
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static char *Query_ProbeAlphaNum(char *p);
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static int Query_isControlChar(char p);
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bool Query(const char *query);
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bool Query_Parse(const char *query);
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const char *GetLastQuery();
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public://fucko: protected
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LinkedList pstack;
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char *token;
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char *last_query;
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int last_query_failed;
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protected:
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Record *CurrentRecord;
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int CurrentRecordIdx;
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LinkedList FilterList;
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Index *lastLocateIndex;
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int lastLocateIdx;
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Field *lastLocateFieldClone;
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int lastLocateFrom;
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int lastLocateId;
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bool Edition;
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int ResultPtr;
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bool FiltersOK;
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public:
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bool MatchFilter(Filter *filter);
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typedef bool (*FilterWalker)(Scanner *scanner, Filter *filter, void *context);
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void WalkFilters(FilterWalker walker, void *context);
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ColumnField *GetColumnByName(const char *FieldName);
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ColumnField *GetColumnById(unsigned char id);
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Field *NewFieldByName(const char *fieldName, unsigned char Perm);
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Field *NewFieldById(unsigned char Id, unsigned char Perm);
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void DeleteField(Field *field);
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void DeleteFieldByName(const char *name);
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void DeleteFieldById(unsigned char Id);
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void Cancel(void);
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void Insert(void);
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void Edit(void);
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void Post(void);
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void Delete(void);
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Field *GetFieldByName(const char *FieldName);
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Field *GetFieldById(unsigned char Id);
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void First(int *killswitch=0);
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void Last(int *killswitch=0);
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int Next(int *killswitch=0);
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int Previous(int *killswitch=0);
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bool Eof(void);
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bool Bof(void);
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void New(void);
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int GetRecordsCount(void);
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void GetRecordById(int Id, bool checkFilters=true);
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int GetRecordId(void);
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void Sync(void);
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bool LocateByName(const char *column, int From, Field *field, int *nskip=NULL);
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bool LocateById(int Id, int From, Field *field, int *nskip=NULL);
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bool LocateByIdEx(int Id, int From, Field *field, int *nskip, int comp_mode);
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// Filters
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int AddFilterByName(const char *name, Field *Data, unsigned char Op);
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int AddFilterById(unsigned char Id, Field *Data, unsigned char Op);
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int AddFilterOp(unsigned char Op);
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void RemoveFilters(void);
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Filter *GetLastFilter(void);
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bool SetWorkingIndexByName(const char *desc);
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bool SetWorkingIndexById(unsigned char Id);
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void Search(const char *search_string);
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bool HasIndexChanged(void) { return iModified; }
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void ClearDirtyBit(void);
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float FragmentationLevel(void);
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Table *GetTable();
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int in_query_parser;
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int disable_date_resolution;
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};
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#endif
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