CRM/Case/XMLRepository.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 4.6                                                |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2014                                |
   7  +--------------------------------------------------------------------+
   8  | This file is a part of CiviCRM.                                    |
   9  |                                                                    |
  10  | CiviCRM is free software; you can copy, modify, and distribute it  |
  11  | under the terms of the GNU Affero General Public License           |
  12  | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  13  |                                                                    |
  14  | CiviCRM is distributed in the hope that it will be useful, but     |
  15  | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  16  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  17  | See the GNU Affero General Public License for more details.        |
  18  |                                                                    |
  19  | You should have received a copy of the GNU Affero General Public   |
  20  | License and the CiviCRM Licensing Exception along                  |
  21  | with this program; if not, contact CiviCRM LLC                     |
  22  | at info[AT]civicrm[DOT]org. If you have questions about the        |
  23  | GNU Affero General Public License or the licensing of CiviCRM,     |
  24  | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  25  +--------------------------------------------------------------------+
  26 */
  27
  28 /**
  29  *
  30  * @package CRM
  31  * @copyright CiviCRM LLC (c) 2004-2014
  32  * $Id$
  33  *
  34  * The XMLRepository is responsible for loading XML for case-types.
  35  * It includes any bulk operations that apply across the list of all XML
  36  * documents of all case-types.
  37  */
  38 class CRM_Case_XMLRepository {
  39   private static $singleton;
  40
  41   /**
  42    * @var array<String,SimpleXMLElement>
  43    */
  44   protected $xml = array();
  45
  46   /**
  47    * @var array|NULL
  48    */
  49   protected $hookCache = NULL;
  50
  51   /**
  52    * @var array|NULL symbolic names of case-types
  53    */
  54   protected $allCaseTypes = NULL;
  55
  56   /**
  57    * @param bool $fresh
  58    * @return CRM_Case_XMLRepository
  59    */
  60   public static function singleton($fresh = FALSE) {
  61     if (!self::$singleton || $fresh) {
  62       self::$singleton = new static();
  63     }
  64     return self::$singleton;
  65   }
  66
  67   /**
  68    * @param array<String,SimpleXMLElement> $xml
  69    */
  70   public function __construct($allCaseTypes = NULL, $xml = array()) {
  71     $this->allCaseTypes = $allCaseTypes;
  72     $this->xml = $xml;
  73   }
  74
  75   /**
  76    * @param string $caseType
  77    * @return SimpleXMLElement|FALSE
  78    */
  79   public function retrieve($caseType) {
  80     // check if xml definition is defined in db
  81     $definition = CRM_Core_DAO::getFieldValue('CRM_Case_DAO_CaseType', $caseType, 'definition', 'name');
  82
  83     if (!empty($definition)) {
  84       list ($xml, $error) = CRM_Utils_XML::parseString($definition);
  85       if (!$xml) {
  86         throw new CRM_Core_Exception("Failed to parse CaseType XML: $error");
  87       }
  88       return $xml;
  89     }
  90
  91     // TODO In 4.6 or 5.0, remove support for weird machine-names
  92     //if (!CRM_Case_BAO_CaseType::isValidName($caseType)) {
  93     //  // perhaps caller provider a the label instead of the name?
  94     //  throw new CRM_Core_Exception("Cannot load caseType with malformed name [$caseType]");
  95     //}
  96
  97     if (!CRM_Utils_Array::value($caseType, $this->xml)) {
  98       $fileXml = $this->retrieveFile($caseType);
  99       if ($fileXml) {
 100         $this->xml[$caseType] = $fileXml;
 101       }
 102       else {
 103         return FALSE;
 104       }
 105     }
 106     return $this->xml[$caseType];
 107   }
 108
 109   /**
 110    * @param string $caseType
 111    * @return SimpleXMLElement|FALSE
 112    */
 113   public function retrieveFile($caseType) {
 114     $fileName = NULL;
 115     $fileXml = NULL;
 116
 117     if (CRM_Case_BAO_CaseType::isValidName($caseType)) {
 118       // Search for a file based directly on the $caseType name
 119       $fileName = $this->findXmlFile($caseType);
 120     }
 121
 122     // For backward compatibility, also search for double-munged file names
 123     // TODO In 4.6 or 5.0, remove support for loading double-munged file names
 124     if (!$fileName || !file_exists($fileName)) {
 125       $fileName = $this->findXmlFile(CRM_Case_XMLProcessor::mungeCaseType($caseType));
 126     }
 127
 128     if ($fileName && file_exists($fileName)) {
 129       // read xml file
 130       $dom = new DomDocument();
 131       $dom->load($fileName);
 132       $dom->xinclude();
 133       $fileXml = simplexml_import_dom($dom);
 134     }
 135
 136     return $fileXml;
 137   }
 138
 139   /**
 140    * @param string $caseType
 141    * @return null|string file path
 142    */
 143   public function findXmlFile($caseType) {
 144     // first check custom templates directory
 145     $fileName = NULL;
 146
 147     if (!$fileName || !file_exists($fileName)) {
 148       $caseTypesViaHook = $this->getCaseTypesViaHook();
 149       if (isset($caseTypesViaHook[$caseType], $caseTypesViaHook[$caseType]['file'])) {
 150         $fileName = $caseTypesViaHook[$caseType]['file'];
 151       }
 152     }
 153
 154     if (!$fileName || !file_exists($fileName)) {
 155       $config = CRM_Core_Config::singleton();
 156       if (isset($config->customTemplateDir) && $config->customTemplateDir) {
 157         // check if the file exists in the custom templates directory
 158         $fileName = implode(DIRECTORY_SEPARATOR,
 159           array(
 160             $config->customTemplateDir,
 161             'CRM',
 162             'Case',
 163             'xml',
 164             'configuration',
 165             "$caseType.xml",
 166           )
 167         );
 168       }
 169     }
 170
 171     if (!$fileName || !file_exists($fileName)) {
 172       if (!file_exists($fileName)) {
 173         // check if file exists locally
 174         $fileName = implode(DIRECTORY_SEPARATOR,
 175           array(
 176             dirname(__FILE__),
 177             'xml',
 178             'configuration',
 179             "$caseType.xml",
 180           )
 181         );
 182       }
 183
 184       if (!file_exists($fileName)) {
 185         // check if file exists locally
 186         $fileName = implode(DIRECTORY_SEPARATOR,
 187           array(
 188             dirname(__FILE__),
 189             'xml',
 190             'configuration.sample',
 191             "$caseType.xml",
 192           )
 193         );
 194       }
 195     }
 196     return file_exists($fileName) ? $fileName : NULL;
 197   }
 198
 199   /**
 200    * @return array
 201    * @see CRM_Utils_Hook::caseTypes
 202    */
 203   public function getCaseTypesViaHook() {
 204     if ($this->hookCache === NULL) {
 205       $this->hookCache = array();
 206       CRM_Utils_Hook::caseTypes($this->hookCache);
 207     }
 208     return $this->hookCache;
 209   }
 210
 211   /**
 212    * @return array<string> symbolic names of case-types
 213    */
 214   public function getAllCaseTypes() {
 215     if ($this->allCaseTypes === NULL) {
 216       $this->allCaseTypes = CRM_Case_PseudoConstant::caseType("name");
 217     }
 218     return $this->allCaseTypes;
 219   }
 220
 221   /**
 222    * @return array<string> symbolic-names of activity-types
 223    */
 224   public function getAllDeclaredActivityTypes() {
 225     $result = array();
 226
 227     $p = new CRM_Case_XMLProcessor_Process();
 228     foreach ($this->getAllCaseTypes() as $caseTypeName) {
 229       $caseTypeXML = $this->retrieve($caseTypeName);
 230       $result = array_merge($result, $p->getDeclaredActivityTypes($caseTypeXML));
 231     }
 232
 233     $result = array_unique($result);
 234     sort($result);
 235     return $result;
 236   }
 237
 238   /**
 239    * @return array<string> symbolic-names of relationship-types
 240    */
 241   public function getAllDeclaredRelationshipTypes() {
 242     $result = array();
 243
 244     $p = new CRM_Case_XMLProcessor_Process();
 245     foreach ($this->getAllCaseTypes() as $caseTypeName) {
 246       $caseTypeXML = $this->retrieve($caseTypeName);
 247       $result = array_merge($result, $p->getDeclaredRelationshipTypes($caseTypeXML));
 248     }
 249
 250     $result = array_unique($result);
 251     sort($result);
 252     return $result;
 253   }
 254
 255   /**
 256    * Determine the number of times a particular activity-type is
 257    * referenced in CiviCase XML.
 258    *
 259    * @param string $activityType
 260    *   Symbolic-name of an activity type.
 261    * @return int
 262    */
 263   public function getActivityReferenceCount($activityType) {
 264     $p = new CRM_Case_XMLProcessor_Process();
 265     $count = 0;
 266     foreach ($this->getAllCaseTypes() as $caseTypeName) {
 267       $caseTypeXML = $this->retrieve($caseTypeName);
 268       if (in_array($activityType, $p->getDeclaredActivityTypes($caseTypeXML))) {
 269         $count++;
 270       }
 271     }
 272     return $count;
 273   }
 274
 275   /**
 276    * Determine the number of times a particular activity-type is
 277    * referenced in CiviCase XML.
 278    *
 279    * @param string $relationshipTypeName
 280    *   Symbolic-name of a relationship-type.
 281    * @return int
 282    */
 283   public function getRelationshipReferenceCount($relationshipTypeName) {
 284     $p = new CRM_Case_XMLProcessor_Process();
 285     $count = 0;
 286     foreach ($this->getAllCaseTypes() as $caseTypeName) {
 287       $caseTypeXML = $this->retrieve($caseTypeName);
 288       if (in_array($relationshipTypeName, $p->getDeclaredRelationshipTypes($caseTypeXML))) {
 289         $count++;
 290       }
 291     }
 292     return $count;
 293   }
 294
 295 }