D13588.id32841.diff
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D13588.id32841.diff
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	diff --git a/src/symbols/PhutilClassMapQuery.php b/src/symbols/PhutilClassMapQuery.php
	--- a/src/symbols/PhutilClassMapQuery.php
	+++ b/src/symbols/PhutilClassMapQuery.php
	@@ -41,6 +41,7 @@

	private $ancestorClass;
	private $expandMethod;
	+ private $filterMethod;
	private $filterNull = false;
	private $uniqueMethod;
	private $sortMethod;
	@@ -148,6 +149,19 @@
	}


	+ /**
	+ * Provide a method to filter the map.
	+ *
	+ * @param string Name of the filtering method.
	+ * @return this
	+ * @task config
	+ */
	+ public function setFilterMethod($filter_method) {
	+ $this->filterMethod = $filter_method;
	+ return $this;
	+ }
	+
	+
	/* -( Executing the Query )------------------------------------------------ */


	@@ -191,6 +205,7 @@
	}

	$expand = $this->expandMethod;
	+ $filter = $this->filterMethod;
	$unique = $this->uniqueMethod;
	$sort = $this->sortMethod;

	@@ -253,6 +268,11 @@
	$map = $list;
	}

	+ // Apply the "filter" mechanism, if it is configured.
	+ if (strlen($filter)) {
	+ $map = mfilter($map, $filter);
	+ }
	+
	// Apply the "sort" mechanism, if it is configured.
	if (strlen($sort)) {
	$map = msort($map, $sort);