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phorge/src/applications/fact/chart/PhabricatorChartDataQuery.php
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PhabricatorChartDataQuery.php
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<?php
final class PhabricatorChartDataQuery
extends Phobject {
private $limit;
private $minimumValue;
private $maximumValue;
/**
* @param int $minimum_value Epoch timestamp of the first input data
*/
public function setMinimumValue($minimum_value) {
$this->minimumValue = $minimum_value;
return $this;
}
public function getMinimumValue() {
return $this->minimumValue;
}
/**
* @param int $maximum_value Epoch timestamp of the last input data
*/
public function setMaximumValue($maximum_value) {
$this->maximumValue = $maximum_value;
return $this;
}
public function getMaximumValue() {
return $this->maximumValue;
}
/**
* @param int $limit Maximum amount of data points to handle. If there are
* more data points, some in-between data will be ignored.
*/
public function setLimit($limit) {
$this->limit = $limit;
return $this;
}
public function getLimit() {
return $this->limit;
}
/**
* Filter input data: Remove values lower resp. higher than the minimum
* resp. maximum values; remove some data if amount of data above the limit.
*
* @param array<int> $xv Epoch timestamps of unfitlered input data
* @return array<int> Epoch timestamps of fitlered input data
*/
public function selectInputValues(array $xv) {
$result = array();
$x_min = $this->getMinimumValue();
$x_max = $this->getMaximumValue();
$limit = $this->getLimit();
if ($x_min !== null) {
foreach ($xv as $key => $x) {
if ($x < $x_min) {
unset($xv[$key]);
}
}
}
if ($x_max !== null) {
foreach ($xv as $key => $x) {
if ($x > $x_max) {
unset($xv[$key]);
}
}
}
// If we have too many data points, throw away some of the data.
// TODO: This doesn't work especially well right now.
if ($limit !== null) {
$count = count($xv);
if ($count > $limit) {
$ii = 0;
$every = ceil($count / $limit);
foreach ($xv as $key => $x) {
$ii++;
if (($ii % $every) && ($ii != $count)) {
unset($xv[$key]);
}
}
}
}
return array_values($xv);
}
}

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