sev_server, read values adapted to deadband linear regr

sev/lib/sev/src/sev_dbms.cpp

@@ -1514,8 +1514,33 @@ int sev_dbms::get_values( pwr_tStatus *sts, pwr_tOid oid, pwr_tMask options, flo
   }
   if ( item.options & pwr_mSevOptionsMask_Event) {
     total_rows = atoi(row[4]);
+    div = total_rows / maxsize + 1;
   }
-  else if ( starttime && endtime) {
+  else if ( item.options & pwr_mSevOptionsMask_UseDeadBand && 
+	    item.options & pwr_mSevOptionsMask_DeadBandLinearRegr) {
+    int startid;
+    int endid;
+
+    if ( starttime) {
+      // Get id for starttime
+      *sts = get_closest_time( item.tablename, item.options, starttime, 1, &startid);      
+    }
+    else
+      startid = 0;
+    if ( endtime) {
+      // Get id for starttime
+      *sts = get_closest_time( item.tablename, item.options, endtime, 0, &endid);
+      if ( endid == 0)
+	endid = atoi(row[4]);
+    }
+    else 
+      endid = atoi(row[4]);
+
+    printf( "startid %d, endid %d\n", startid, endid);
+    div = (endid - startid + 1) / maxsize + 1;
+  }
+  else {
+    if ( starttime && endtime) {
       pwr_tTime update_time;
       if ( row[12])
 	timestr_to_time( row[12], &update_time);
@@ -1561,9 +1586,10 @@ int sev_dbms::get_values( pwr_tStatus *sts, pwr_tOid oid, pwr_tMask options, flo
     else {
       total_rows = atoi(row[4]);
     }
+    div = total_rows / maxsize + 1;
+  }
   mysql_free_result( result);
 
-  div = total_rows / maxsize + 1;
 
   if ( starttime) {
     *sts = time_AtoAscii( &stime, time_eFormat_NumDateAndTime, starttimstr,
@@ -3169,6 +3195,58 @@ int sev_dbms::check_deadband(pwr_eType type, unsigned int size, pwr_tFloat32 dea
   return deadband_active;
 }
 
+int sev_dbms::get_closest_time( char *tablename, unsigned int options, pwr_tTime *time, int before, int *id)
+{
+  char query[200];
+  pwr_tStatus sts;
+  char timstr[20];
+
+  sts = time_AtoAscii( time, time_eFormat_NumDateAndTime, timstr, sizeof(timstr));
+  if ( EVEN(sts)) return sts;
+  timstr[19] = 0;
+
+  if ( options & pwr_mSevOptionsMask_PosixTime) {
+    if ( before)
+      sprintf( query, "select id from %s where time <= %ld order by time desc limit 1",  tablename, (long int)time->tv_sec);
+    else
+      sprintf( query, "select id from %s where time >= %ld order by time asc limit 1",  tablename, (long int)time->tv_sec);
+  }
+  else {
+    if ( before)
+      sprintf( query, "select id from %s where time <= '%s' order by time desc limit 1",  tablename, timstr);
+    else
+      sprintf( query, "select id from %s where time >= '%s' order by time asc limit 1",  tablename, timstr);
+  }
+      
+  int rc = mysql_query( m_env->con(), query);
+  if (rc) {
+    printf("In %s row %d:\n", __FILE__, __LINE__);
+    printf( "%s Query Error\n", __FUNCTION__);
+    return SEV__DBERROR;
+  }
+  
+  MYSQL_ROW row;
+  MYSQL_RES *result = mysql_store_result( m_env->con());
+  
+  if ( !result) {
+    printf("In %s row %d:\n", __FILE__, __LINE__);
+    printf( "%s Status Result Error\n", __FUNCTION__);
+    return SEV__DBERROR;
+  }
+
+  row = mysql_fetch_row( result);
+  if (!row) {
+    *id = 0;
+  }
+  else
+    *id = atoi(row[0]);
+
+  mysql_free_result( result);
+
+  return 1;
+}
+
+
 int sev_dbms::get_objectvalues( pwr_tStatus *sts, sev_item *item,
 			  unsigned int size, pwr_tTime *starttime, pwr_tTime *endtime, 
 			  int maxsize, pwr_tTime **tbuf, void **vbuf, unsigned int *bsize)
@@ -3227,6 +3305,27 @@ int sev_dbms::get_objectvalues( pwr_tStatus *sts, sev_item *item,
   if ( item->options & pwr_mSevOptionsMask_Event) {
     total_rows = atoi(row[4]);
   }
+  else if ( item->options & pwr_mSevOptionsMask_UseDeadBand && 
+	    item->options & pwr_mSevOptionsMask_DeadBandLinearRegr) {
+    int startid;
+    int endid;
+
+    if ( starttime) {
+      // Get id for starttime
+      *sts = get_closest_time( item->tablename, item->options, starttime, 1, &startid);
+    }
+    else
+      startid = 0;
+    if ( endtime) {
+      // Get id for starttime
+      *sts = get_closest_time( item->tablename, item->options, endtime, 0, &endid);
+    }
+    else 
+      endid = atoi(row[4]);
+
+    printf( "startid %d, endid %d\n", startid, endid);
+    div = (endid - startid + 1) / maxsize + 1;
+  }
   else if ( starttime && endtime) {
     pwr_tTime update_time;
     if ( row[12])

sev/lib/sev/src/sev_dbms.h

@@ -206,6 +206,7 @@ class sev_dbms : public sev_db {
   void add_cache( int item_idx);
   int begin_transaction();
   int commit_transaction();
+  int get_closest_time( char *tablename, unsigned int options, pwr_tTime *time, int before, int *id);
   inline char* create_colName(unsigned int index, char *attributename) {
     static char colName[constMaxColNameLength];
     strncpy(colName, attributename, constMaxColNameLength);