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/*
* palm-db-tools: Field definitions for flat-file database objects.
* Copyright (C) 2000 by Tom Dyas ([email protected])
*/
#ifndef __PALMLIB_FLATFILE_FIELD_H__
#define __PALMLIB_FLATFILE_FIELD_H__
#include <string>
#include "../libpalm/palmtypes.h"
namespace PalmLib {
namespace FlatFile {
class Field {
public:
Field() : no_value(false), type(STRING), v_boolean(false),
v_integer(0), v_float(0) { }
~Field() { }
// True if this field has no value. (NULL in SQL terms)
bool no_value;
enum FieldType {
STRING,
BOOLEAN,
INTEGER,
FLOAT,
DATE,
TIME,
DATETIME,
LIST,
LINK,
NOTE,
CALCULATED,
LINKED,
LAST
};
enum FieldType type;
std::string v_string;
std::string v_note;
bool v_boolean;
PalmLib::pi_int32_t v_integer;
long double v_float;
struct {
int month;
int day;
int year;
} v_date; // valid for DATE and DATETIME
struct {
int hour;
int minute;
} v_time; // valid for TIME and DATETIME
/*
friend Field operator = (const Field& y)
{
this.v_string = y.v_string;
this.v_boolean = y.v_boolean;
this.v_integer = y.v_integer;
this.v_float = y.v_float;
this.v_date.month = y.v_date.month;
this.v_date.day = y.v_date.day;
this.v_date.year = y.v_date.year;
this.v_time.hour = y.v_time.hour;
this.v_time.minute = y.v_time.minute;
this.v_note = y.v_note;
}
*/
friend bool operator==(const Field& x, const Field& y)
{
if (x.type != y.type)
return false;
switch (x.type) {
case STRING:
return (x.v_string == y.v_string);
case BOOLEAN:
return (x.v_boolean == y.v_boolean);
case INTEGER:
return (x.v_integer == y.v_integer);
case FLOAT:
return (x.v_float == y.v_float);
case DATE:
return (x.v_date.month == y.v_date.month
&& x.v_date.day == y.v_date.day
&& x.v_date.year == y.v_date.year);
case TIME:
return (x.v_time.hour == y.v_time.hour
&& x.v_time.minute == y.v_time.minute);
case DATETIME:
return (x.v_date.month == y.v_date.month
&& x.v_date.day == y.v_date.day
&& x.v_date.year == y.v_date.year
&& x.v_time.hour == y.v_time.hour
&& x.v_time.minute == y.v_time.minute);
case LIST:
return (x.v_string == y.v_string);
case LINK:
return (x.v_string == y.v_string);
case NOTE:
return (x.v_string == y.v_string
&& x.v_note == y.v_note);
case CALCULATED:
return true; //a calculated field could be recalculate at each time
case LINKED:
return (x.v_string == y.v_string);
default:
return (x.v_string == y.v_string);
}
}
};
}
}
#endif
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