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112 lines
3.3 KiB
PHP
112 lines
3.3 KiB
PHP
<?php
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// Copyright (C) 2015 Combodo SARL
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//
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// This file is part of iTop.
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//
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// iTop is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// iTop is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with iTop. If not, see <http://www.gnu.org/licenses/>
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/**
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* Data structures (i.e. PHP classes) to build and use relation graphs
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*
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* @copyright Copyright (C) 2015 Combodo SARL
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* @license http://opensource.org/licenses/AGPL-3.0
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*
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*/
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require_once(APPROOT.'core/simplegraph.class.inc.php');
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/**
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* An object Node inside a RelationGraph
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*/
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class RelationObjectNode extends GraphNode
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{
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public function __construct($oGraph, $oObject)
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{
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parent::__construct($oGraph, self::MakeId($oObject));
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$this->SetProperty('object', $oObject);
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$this->SetProperty('label', get_class($oObject).'::'.$oObject->GetKey().' ('.$oObject->Get('friendlyname').')');
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}
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public static function MakeId($oObject)
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{
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return get_class($oObject).'::'.$oObject->GetKey();
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}
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}
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/**
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* An redundancy Node inside a RelationGraph
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*/
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class RelationRedundancyNode extends GraphNode
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{
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public function GetDotAttributes()
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{
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$sDot = 'shape=point,label="'.$this->GetProperty('threshold').'"';
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return $sDot;
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// shape=point
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}
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}
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class RelationGraph extends SimpleGraph
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{
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/**
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* Recursively find related objects, and add them into the graph
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*
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* @param string $sRelCode The code of the relation to use for the computation
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* @param array $oObjectNode The node from which to compute the neighbours
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* @param int $iMaxDepth
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* @param boolean $bEnableReduncancy
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*
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* @return void
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*/
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public function AddRelatedObjectsDown($sRelCode, $oObjectNode, $iMaxDepth, $bEnableRedundancy)
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{
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if ($iMaxDepth > 0)
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{
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$oObject = $oObjectNode->GetProperty('object');
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foreach (MetaModel::EnumRelationQueries(get_class($oObject), $sRelCode, true) as $sDummy => $aQueryInfo)
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{
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$sQuery = $aQueryInfo['sQueryDown'];
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try
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{
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$oFlt = DBObjectSearch::FromOQL($sQuery);
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$oObjSet = new DBObjectSet($oFlt, array(), $oObject->ToArgsForQuery());
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$oRelatedObj = $oObjSet->Fetch();
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}
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catch (Exception $e)
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{
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throw new Exception("Wrong query (downstream) for the relation $sRelCode/{$aQueryInfo['sDefinedInClass']}/{$aQueryInfo['sNeighbour']}: ".$e->getMessage());
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}
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if ($oRelatedObj)
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{
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do
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{
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$sObjectRef = RelationObjectNode::MakeId($oRelatedObj);
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$oRelatedNode = $this->GetNode($sObjectRef);
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if (is_null($oRelatedNode))
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{
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$oRelatedNode = new RelationObjectNode($this, $oRelatedObj);
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// Recurse
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$this->AddRelatedObjectsDown($sRelCode, $oRelatedNode, $iMaxDepth - 1, $bEnableRedundancy);
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}
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$oEdge = new GraphEdge($this, $oObjectNode->GetId().' to '.$oRelatedNode->GetId(), $oObjectNode, $oRelatedNode);
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}
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while ($oRelatedObj = $oObjSet->Fetch());
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}
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}
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}
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}
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}
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