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Diff for /parser3/src/include/pa_table.h between versions 1.7 and 1.48.2.11.2.6

version 1.7, 2001/01/30 13:43:43 version 1.48.2.11.2.6, 2003/03/26 18:52:49
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 /*  /** @file
   $Id$          Parser: table class decl.
 */  
   
 /*          Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
         hence most of tables are "named", no need to uptimize unnamed onces          Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 */  */
   
   
 #ifndef PA_TABLE_H  #ifndef PA_TABLE_H
 #define PA_TABLE_H  #define PA_TABLE_H
   
   static const char* IDENT_TABLE_H="$Date$";
   
 #include "pa_types.h"  #include "pa_types.h"
 #include "pa_array.h"  
 #include "pa_hash.h"  #include "pa_hash.h"
 #include "pa_string.h"  #include "pa_string.h"
 #include "pa_request.h"  
   
 class Table : public Array {  /** 
 public:          VTable backend.
   
         Table(Request& arequest,          holds:
                 char *afile, uint aline,          - column names[if any]
                 Array *acolumns,          - data rows
                 int initial_rows=CR_INITIAL_ROWS_DEFAULT);          - current row pointer
   
           uses String for column names and data items
   
           hence most of tables are "named", no need to uptimize nameless onces.
           rows and strings stored are read-only. once stored they can be removed,
           but not altered. that's handy for quick copying & co. see table:join
   */
   class Table: public Array<ArrayString*> {
   public:
           typedef ArrayString* columns_type;
   
         // the base origin of table's data          Table(
         //const Origin& origin() { return forigin; }                  columns_type acolumns,
                   int initial_rows=3);
           Table(const Table& src, int offset=0, int limit=0);
   
         const Array *columns() { return fcolumns; }          /// gets column names
           columns_type columns() { return fcolumns; }
   
           /// moves @a current pointer
         void set_current(int acurrent) { fcurrent=acurrent; }          void set_current(int acurrent) { fcurrent=acurrent; }
         int get_current() { return fcurrent; }          /// @return current pointer
         void inc_current() { fcurrent++; }          int current() const { return fcurrent; }
           void offset(bool absolute, int offset);
         void read_item(String& result, const String& column_name) {  
                 result.APPEND(item(column_name), forigin.file, forigin.line+fcurrent);          /** @return column index from @a column_name. '<0' if no such column
                   if no such - 'bark'
           */
           int column_name2index(const String& column, bool bark) const;
   
           /// @return item from @a column
           const String* item(size_t column);
   
           /// @return item from @a column. '0' if no such column
           const String* item(const String& column) {
                   int index=column_name2index(column, false);
                   return index>=0?item(index):0;
         }          }
   
 protected:          /// saves to text file
           void save(bool nameless_save, const String& file_spec);
   
         // the request I'm processed on. for error reporting          bool locate(size_t column, const String& value);
         Request& request;          bool locate(const String& column, const String& value);
   
         // the base origin of table's data  
         Origin forigin;  
   
         // column name->number lookup table  
         Hash name2number;  
   
   private:
           
         // current row          // current row
         int fcurrent;          size_t fcurrent;
   
         // columns          // columns
         Array *fcolumns;          columns_type fcolumns;
   
           // column names are already referenced in fcolumns, no need to doublecheck references here
           // column name->number lookup table
           typedef Hash<const StringBody, int> name2number_hash_class;
           name2number_hash_class* name2number;
   
           // we own columns?
   
         const Array& at(int index);          bool valid(size_t index) const { return index>=0 && index<count(); }
   
         const char *item(int column_index);  
         const char *item(const String& column_name);  
 };  };
   
 #endif  #endif
Removed from v.1.7  
changed lines
  Added in v.1.48.2.11.2.6

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