/**
* Fetch next row into variable
* @return bool if next row exists
*/
public function nextRow()
{
if ($this->source->nextRow()) {
$this->row =& $this->source->row;
if (empty($this->displayColumns) && !empty($this->source->displayColumns)) {
$this->displayColumns = $this->source->displayColumns;
}
$origKeys = array_keys($this->row);
$functionReturn = $this->functionEvaluator->evaluateFunction($this->functionArray, $this->row);
if ($this->fieldToAssign) {
$this->source->row[$this->fieldToAssign] = $functionReturn;
if (!in_array($this->fieldToAssign, $this->displayColumns)) {
$this->displayColumns[] = $this->fieldToAssign;
}
} else {
if ($functionReturn === null || is_array($functionReturn)) {
// $functionReturn when a reference was passed in and row may be modified
// New row returned
if (is_array($functionReturn)) {
// function returns new array for the entry
$this->source->row = $functionReturn;
$this->row =& $this->source->row;
}
// Reconcile display columns
// 1. Check for the addition of new columns to add to displays
$newFieldsSeen = array();
$newKeys = array_keys($this->row);
$addedKeys = array_diff($newKeys, $origKeys);
if (!empty($addedKeys)) {
foreach ($addedKeys as $add) {
if (!in_array($add, $this->displayColumns)) {
$this->displayColumns[] = $add;
$newFieldsSeen[] = $add;
}
}
}
// 2. Remove display columns that no longer exist
$updatedDisplays = array();
foreach ($this->displayColumns as $aDisplay) {
if (in_array($aDisplay, $newKeys) || in_array($aDisplay, $newFieldsSeen)) {
$updatedDisplays[] = $aDisplay;
}
}
$this->displayColumns = $updatedDisplays;
}
}
return true;
}
return false;
}
/**
* Fetch next row into variable
* @return bool if next row exists
*/
public function nextRow()
{
if ($this->source->nextRow()) {
$this->row =& $this->source->row;
$functionReturn = $this->functionEvaluator->evaluateFunction($this->functionArray, $this->row);
if ($this->fieldToAssign) {
$this->source->row[$this->fieldToAssign] = $functionReturn;
} else {
if (is_array($functionReturn)) {
// function returns new array for the entry
$this->source->row = $functionReturn;
$this->row =& $this->source->row;
}
}
return true;
}
return false;
}
