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20141222.maniphestprojtxn.php
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			<?php

			$table = new ManiphestTransaction();
			$conn_w = $table->establishConnection('w');

			echo pht(
			"Converting Maniphest project transactions to modern edge transactions...\n");
			$metadata = array(
			'edge:type' => PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
			);
			foreach (new LiskMigrationIterator($table) as $txn) {
			if ($txn->getTransactionType() != 'projects') {
			continue;
			}

			$old_value = mig20141222_build_edge_data(
			$txn->getOldValue(),
			$txn->getObjectPHID());

			$new_value = mig20141222_build_edge_data(
			$txn->getNewValue(),
			$txn->getObjectPHID());

			queryfx(
			$conn_w,
			'UPDATE %T SET '.
			'transactionType = %s, oldValue = %s, newValue = %s, metaData = %s '.
			'WHERE id = %d',
			$table->getTableName(),
			PhabricatorTransactions::TYPE_EDGE,
			json_encode($old_value),
			json_encode($new_value),
			json_encode($metadata),
			$txn->getID());
			}

			echo pht('Done.')."\n";

			function mig20141222_build_edge_data($project_phids, $task_phid) {
			$edge_data = array();

			// See T9464. If we didn't get a proper array value out of the transaction,
			// just return an empty value so we can move forward.
			if (!is_array($project_phids)) {
			return $edge_data;
			}

			foreach ($project_phids as $project_phid) {
			if (!is_scalar($project_phid)) {
			continue;
			}

			$edge_data[$project_phid] = array(
			'src' => $task_phid,
			'type' => PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
			'dst' => $project_phid,
			);
			}

			return $edge_data;
			}