rlBussignalDatabase Class Reference

#include <rlbussignaldatabase.h>

List of all members.

Public Member Functions
	rlBussignalDatabase ()
virtual	~rlBussignalDatabase ()
int	openDatabase (const char *database, const char *table)
int	writeDatabaseInt (const char *item, int val)
int	writeDatabaseIntArray (const char *item, int *val, int len)
int	writeDatabaseFloat (const char *item, float val)
int	writeDatabaseFloatArray (const char *item, float *val, int len)
int	writeDatabaseString (const char *item, char *val)
int	readDatabase (const char *item, char *type, char *value)
int	closeDatabase ()
Private Member Functions
int	writeDatabaseString (const char *item)
int	myquery (const char *query)
Private Attributes
void *	database
void *	connection
char *	databaseName
char *	tableName
char	buf [rl_PRINTF_LENGTH]
char	typebuf [16]

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Detailed Description

Definition at line 21 of file rlbussignaldatabase.h.

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Constructor & Destructor Documentation

rlBussignalDatabase::rlBussignalDatabase

(

)

Definition at line 30 of file rlbussignaldatabase.cpp.

{
  databaseName = NULL;
  tableName    = NULL;
  connection   = NULL;
  if(mysql_is_initialized == 0)
  {
    mysql_init(&mysql);
    mysql_is_initialized = 1;
  }
}

rlBussignalDatabase::~rlBussignalDatabase

(

)

[virtual]

Definition at line 42 of file rlbussignaldatabase.cpp.

{
  closeDatabase();
  if(databaseName != NULL) delete [] databaseName;
  if(tableName != NULL) delete [] tableName;
}

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Member Function Documentation

int rlBussignalDatabase::closeDatabase

(

)

Definition at line 197 of file rlbussignaldatabase.cpp.

{
  mysql_close((MYSQL *) connection);
  return 0;
}

int rlBussignalDatabase::myquery

(

const char *

query

)

[private]

Definition at line 146 of file rlbussignaldatabase.cpp.

{
  int state,num_rows;
  MYSQL_RES *result;

  //printf("query=%s\n",query);
  state = mysql_query((MYSQL *) connection, query);
  if(state != 0)
  {
    //printf("query failed state=%d query=%s\n",state,query);
    return -1;
  }
  num_rows = mysql_affected_rows((MYSQL *) connection);
  result = mysql_store_result((MYSQL *) connection);
  mysql_free_result(result);
  //printf("num_rows=%d\n",num_rows);
  return num_rows;
}

int rlBussignalDatabase::openDatabase	(	const char *	database,
		const char *	table
	)

Definition at line 49 of file rlbussignaldatabase.cpp.

{
  if(databaseName != NULL) delete [] databaseName;
  if(tableName != NULL) delete [] tableName;
  databaseName = new char[strlen(database)+1];
  strcpy(databaseName,database);
  tableName    = new char[strlen(table)+1];
  strcpy(tableName,table);
  connection = (void *) mysql_real_connect(&mysql, "localhost","bususr","buspw",databaseName,0,0,0);
  if(connection == NULL)
  {
    printf(mysql_error(&mysql));
    return -1;
  }
  return 0;
}

int rlBussignalDatabase::readDatabase	(	const char *	item,
		char *	type,
		char *	value
	)

Definition at line 165 of file rlbussignaldatabase.cpp.

{
  char query[1024];
  int state,num_rows;
  MYSQL_RES *result;
  MYSQL_ROW row;

  *type = *value = '\0';
  sprintf(query,"select * from bus where name = '%s'",item);
  //printf("query=%s\n",query);
  state = mysql_query((MYSQL *) connection, query);
  if(state != 0)
  {
    //printf("query failed state=%d query=%s\n",state,query);
    return -1;
  }
  num_rows = mysql_affected_rows((MYSQL *) connection);
  result = mysql_store_result((MYSQL *) connection);
  if(result != NULL)
  {
    row = mysql_fetch_row(result);
    if(row != NULL)
    {
      if(row[1] != NULL) strcpy(type ,row[1]);
      if(row[2] != NULL) strcpy(value,row[2]);
    }
    mysql_free_result(result);
  }
  //printf("num_rows=%d\n",num_rows);
  return num_rows;
}

int rlBussignalDatabase::writeDatabaseFloat	(	const char *	item,
		float	val
	)

Definition at line 89 of file rlbussignaldatabase.cpp.

{
  sprintf(buf,"%f",val);
  sprintf(typebuf,"F1");
  return writeDatabaseString(item);
}

int rlBussignalDatabase::writeDatabaseFloatArray	(	const char *	item,
		float *	val,
		int	len
	)

Definition at line 96 of file rlbussignaldatabase.cpp.

{
  int  i;
  char vbuf[80];

  buf[0] = '\0';
  for(i=0; i<len; i++)
  {
    sprintf(vbuf,"%f,",val[i]);
    if(strlen(buf)+strlen(vbuf) >= sizeof(buf)-1) return -1;
    strcat(buf,vbuf);
  }
  sprintf(typebuf,"F%d",len);
  return writeDatabaseString(item);
}

int rlBussignalDatabase::writeDatabaseInt	(	const char *	item,
		int	val
	)

Definition at line 66 of file rlbussignaldatabase.cpp.

{
  sprintf(buf,"%d",val);
  sprintf(typebuf,"I1");
  return writeDatabaseString(item);
}

int rlBussignalDatabase::writeDatabaseIntArray	(	const char *	item,
		int *	val,
		int	len
	)

Definition at line 73 of file rlbussignaldatabase.cpp.

{
  int  i;
  char vbuf[80];

  buf[0] = '\0';
  for(i=0; i<len; i++)
  {
    sprintf(vbuf,"%d,",val[i]);
    if(strlen(buf)+strlen(vbuf) >= sizeof(buf)-1) return -1;
    strcat(buf,vbuf);
  }
  sprintf(typebuf,"I%d",len);
  return writeDatabaseString(item);
}

int rlBussignalDatabase::writeDatabaseString

(

const char *

item

)

[private]

Definition at line 119 of file rlbussignaldatabase.cpp.

{
  int  ret;
  char sqlbuf[rl_PRINTF_LENGTH];

  // Try an UPDATE
  ret = snprintf(sqlbuf,sizeof(sqlbuf)-1,"UPDATE %s SET datatype='%s', datavalue='%s' WHERE name='%s'",tableName,typebuf,buf,item);
  if(ret < 0)
  {
    printf("sqlbuf too small in writeDatabaseString\n");
    return -1;
  }
  ret = myquery(sqlbuf);
  if(ret > 0) return 0; // success

  // Try an INSERT
  ret = snprintf(sqlbuf,sizeof(sqlbuf)-1,"INSERT INTO %s VALUES ('%s','%s','%s')",tableName,item,typebuf,buf);
  if(ret < 0)
  {
    printf("sqlbuf too small in writeDatabaseString\n");
    return -1;
  }
  ret = myquery(sqlbuf);
  if(ret >= 0) return 0; // success
  return -1;             // failure
}

int rlBussignalDatabase::writeDatabaseString	(	const char *	item,
		char *	val
	)

Definition at line 112 of file rlbussignaldatabase.cpp.

{
  sprintf(typebuf,"S%d",strlen(val));
  rlstrncpy(buf,val,sizeof(buf)-1);
  return writeDatabaseString(item);
}

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Member Data Documentation

char rlBussignalDatabase::buf[rl_PRINTF_LENGTH] [private]

Definition at line 41 of file rlbussignaldatabase.h.

void* rlBussignalDatabase::connection [private]

Definition at line 38 of file rlbussignaldatabase.h.

void* rlBussignalDatabase::database [private]

Definition at line 37 of file rlbussignaldatabase.h.

char* rlBussignalDatabase::databaseName [private]

Definition at line 39 of file rlbussignaldatabase.h.

char* rlBussignalDatabase::tableName [private]

Definition at line 40 of file rlbussignaldatabase.h.

char rlBussignalDatabase::typebuf[16] [private]

Definition at line 42 of file rlbussignaldatabase.h.

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The documentation for this class was generated from the following files:

• rlbussignaldatabase.h
• rlbussignaldatabase.cpp