testing

PhabricatorEdgeGraph.php
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			<?php

			/*
			* Copyright 2012 Facebook, Inc.
			*
			* Licensed under the Apache License, Version 2.0 (the "License");
			* you may not use this file except in compliance with the License.
			* You may obtain a copy of the License at
			*
			* http://www.apache.org/licenses/LICENSE-2.0
			*
			* Unless required by applicable law or agreed to in writing, software
			* distributed under the License is distributed on an "AS IS" BASIS,
			* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
			* See the License for the specific language governing permissions and
			* limitations under the License.
			*/

			final class PhabricatorEdgeGraph extends AbstractDirectedGraph {

			private $edgeType;

			public function setEdgeType($edge_type) {
			$this->edgeType = $edge_type;
			return $this;
			}

			protected function loadEdges(array $nodes) {
			if (!$this->edgeType) {
			throw new Exception("Set edge type before loading graph!");
			}

			$edges = id(new PhabricatorEdgeQuery())
			->withSourcePHIDs($nodes)
			->withEdgeTypes(array($this->edgeType))
			->execute();

			$results = array_fill_keys($nodes, array());
			foreach ($edges as $src => $types) {
			foreach ($types as $type => $dsts) {
			foreach ($dsts as $dst => $edge) {
			$results[$src][] = $dst;
			}
			}
			}

			return $results;
			}

			}