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4 | CiviCRM version 4.7 |
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6 | Copyright CiviCRM LLC (c) 2004-2015 |
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31 * @copyright CiviCRM LLC (c) 2004-2015
37 * The CiviCRM duplicate discovery engine is based on an
38 * algorithm designed by David Strauss <david@fourkitchens.com>.
40 class CRM_Dedupe_BAO_RuleGroup
extends CRM_Dedupe_DAO_RuleGroup
{
43 * Ids of the contacts to limit the SQL queries (whole-database queries otherwise)
45 var $contactIds = array();
48 * Params to dedupe against (queries against the whole contact set otherwise)
50 var $params = array();
53 * If there are no rules in rule group.
58 * Return a structure holding the supported tables, fields and their titles
60 * @param string $requestedType
61 * The requested contact type.
64 * a table-keyed array of field-keyed arrays holding supported fields' titles
66 public static function &supportedFields($requestedType) {
67 static $fields = NULL;
69 // this is needed, as we're piggy-backing importableFields() below
70 $replacements = array(
71 'civicrm_country.name' => 'civicrm_address.country_id',
72 'civicrm_county.name' => 'civicrm_address.county_id',
73 'civicrm_state_province.name' => 'civicrm_address.state_province_id',
74 'gender.label' => 'civicrm_contact.gender_id',
75 'individual_prefix.label' => 'civicrm_contact.prefix_id',
76 'individual_suffix.label' => 'civicrm_contact.suffix_id',
77 'addressee.label' => 'civicrm_contact.addressee_id',
78 'email_greeting.label' => 'civicrm_contact.email_greeting_id',
79 'postal_greeting.label' => 'civicrm_contact.postal_greeting_id',
81 // the table names we support in dedupe rules - a filter for importableFields()
82 $supportedTables = array(
92 foreach (array('Individual', 'Organization', 'Household') as $ctype) {
93 // take the table.field pairs and their titles from importableFields() if the table is supported
94 foreach (CRM_Contact_BAO_Contact
::importableFields($ctype) as $iField) {
95 if (isset($iField['where'])) {
96 $where = $iField['where'];
97 if (isset($replacements[$where])) {
98 $where = $replacements[$where];
100 list($table, $field) = explode('.', $where);
101 if (!in_array($table, $supportedTables)) {
104 $fields[$ctype][$table][$field] = $iField['title'];
107 // add custom data fields
108 foreach (CRM_Core_BAO_CustomGroup
::getTree($ctype, CRM_Core_DAO
::$_nullObject, NULL, -1) as $key => $cg) {
112 foreach ($cg['fields'] as $cf) {
113 $fields[$ctype][$cg['table_name']][$cf['column_name']] = $cf['label'];
118 CRM_Utils_Hook
::dupeQuery(CRM_Core_DAO
::$_nullObject, 'supportedFields', $fields);
119 return $fields[$requestedType];
123 * Return the SQL query for dropping the temporary table.
125 public function tableDropQuery() {
126 return 'DROP TEMPORARY TABLE IF EXISTS dedupe';
130 * Return a set of SQL queries whose cummulative weights will mark matched
131 * records for the RuleGroup::threasholdQuery() to retrieve.
133 public function tableQuery() {
134 // make sure we've got a fetched dbrecord, not sure if this is enforced
135 if (!$this->name
== NULL ||
$this->is_reserved
== NULL) {
139 // Reserved Rule Groups can optionally get special treatment by
140 // implementing an optimization class and returning a query array.
141 if ($this->is_reserved
&&
142 CRM_Utils_File
::isIncludable("CRM/Dedupe/BAO/QueryBuilder/{$this->name}.php")
144 include_once "CRM/Dedupe/BAO/QueryBuilder/{$this->name}.php";
145 $class = "CRM_Dedupe_BAO_QueryBuilder_{$this->name}";
146 $command = empty($this->params
) ?
'internal' : 'record';
147 $queries = call_user_func(array($class, $command), $this);
150 // All other rule groups have queries generated by the member dedupe
151 // rules defined in the administrative interface.
153 // Find all rules contained by this script sorted by weight so that
154 // their execution can be short circuited on RuleGroup::fillTable()
155 $bao = new CRM_Dedupe_BAO_Rule();
156 $bao->dedupe_rule_group_id
= $this->id
;
157 $bao->orderBy('rule_weight DESC');
160 // Generate a SQL query for each rule in the rule group that is
161 // tailored to respect the param and contactId options provided.
163 while ($bao->fetch()) {
164 $bao->contactIds
= $this->contactIds
;
165 $bao->params
= $this->params
;
167 // Skipping empty rules? Empty rules shouldn't exist; why check?
168 if ($query = $bao->sql()) {
169 $queries["{$bao->rule_table}.{$bao->rule_field}.{$bao->rule_weight}"] = $query;
174 // if there are no rules in this rule group
175 // add an empty query fulfilling the pattern
177 $queries = array('SELECT 0 id1, 0 id2, 0 weight LIMIT 0');
178 $this->noRules
= TRUE;
184 public function fillTable() {
185 // get the list of queries handy
186 $tableQueries = $this->tableQuery();
188 if ($this->params
&& !$this->noRules
) {
189 $tempTableQuery = "CREATE TEMPORARY TABLE dedupe (id1 int, weight int, UNIQUE UI_id1 (id1)) ENGINE=MyISAM";
190 $insertClause = "INSERT INTO dedupe (id1, weight)";
191 $groupByClause = "GROUP BY id1";
192 $dupeCopyJoin = " JOIN dedupe_copy ON dedupe_copy.id1 = t1.column WHERE ";
195 $tempTableQuery = "CREATE TEMPORARY TABLE dedupe (id1 int, id2 int, weight int, UNIQUE UI_id1_id2 (id1, id2)) ENGINE=MyISAM";
196 $insertClause = "INSERT INTO dedupe (id1, id2, weight)";
197 $groupByClause = "GROUP BY id1, id2";
198 $dupeCopyJoin = " JOIN dedupe_copy ON dedupe_copy.id1 = t1.column AND dedupe_copy.id2 = t2.column WHERE ";
200 $patternColumn = '/t1.(\w+)/';
201 $exclWeightSum = array();
204 $dao = new CRM_Core_DAO();
205 $dao->query($tempTableQuery);
207 CRM_Utils_Hook
::dupeQuery($this, 'table', $tableQueries);
209 while (!empty($tableQueries)) {
210 list($isInclusive, $isDie) = self
::isQuerySetInclusive($tableQueries, $this->threshold
, $exclWeightSum);
213 // order queries by table count
214 self
::orderByTableCount($tableQueries);
216 $weightSum = array_sum($exclWeightSum);
217 $searchWithinDupes = !empty($exclWeightSum) ?
1 : 0;
219 while (!empty($tableQueries)) {
220 // extract the next query ( and weight ) to be executed
221 $fieldWeight = array_keys($tableQueries);
222 $fieldWeight = $fieldWeight[0];
223 $query = array_shift($tableQueries);
225 if ($searchWithinDupes) {
226 // get prepared to search within already found dupes if $searchWithinDupes flag is set
227 $dao->query("DROP TEMPORARY TABLE IF EXISTS dedupe_copy");
228 $dao->query("CREATE TEMPORARY TABLE dedupe_copy SELECT * FROM dedupe WHERE weight >= {$weightSum}");
231 preg_match($patternColumn, $query, $matches);
232 $query = str_replace(' WHERE ', str_replace('column', $matches[1], $dupeCopyJoin), $query);
234 $searchWithinDupes = 1;
236 // construct and execute the intermediate query
237 $query = "{$insertClause} {$query} {$groupByClause} ON DUPLICATE KEY UPDATE weight = weight + VALUES(weight)";
240 // FIXME: we need to be more acurate with affected rows, especially for insert vs duplicate insert.
241 // And that will help optimize further.
242 $affectedRows = $dao->affectedRows();
245 // In an inclusive situation, failure of any query means no further processing -
246 if ($affectedRows == 0) {
247 // reset to make sure no further execution is done.
248 $tableQueries = array();
251 $weightSum = substr($fieldWeight, strrpos($fieldWeight, '.') +
1) +
$weightSum;
253 // An exclusive situation -
256 // since queries are already sorted by weights, we can continue as is
257 $fieldWeight = array_keys($tableQueries);
258 $fieldWeight = $fieldWeight[0];
259 $query = array_shift($tableQueries);
260 $query = "{$insertClause} {$query} {$groupByClause} ON DUPLICATE KEY UPDATE weight = weight + VALUES(weight)";
262 if ($dao->affectedRows() >= 1) {
263 $exclWeightSum[] = substr($fieldWeight, strrpos($fieldWeight, '.') +
1);
268 // its a die situation
275 * Function to determine if a given query set contains inclusive or exclusive set of weights.
276 * The function assumes that the query set is already ordered by weight in desc order.
277 * @param $tableQueries
279 * @param array $exclWeightSum
283 public static function isQuerySetInclusive($tableQueries, $threshold, $exclWeightSum = array()) {
285 foreach ($tableQueries as $key => $query) {
286 $input[] = substr($key, strrpos($key, '.') +
1);
289 if (!empty($exclWeightSum)) {
290 $input = array_merge($input, $exclWeightSum);
294 if (count($input) == 1) {
295 return array(FALSE, $input[0] < $threshold);
298 $totalCombinations = 0;
299 for ($i = 0; $i < count($input); $i++
) {
300 $combination = array($input[$i]);
301 if (array_sum($combination) >= $threshold) {
302 $totalCombinations++
;
305 for ($j = $i +
1; $j < count($input); $j++
) {
306 $combination[] = $input[$j];
307 if (array_sum($combination) >= $threshold) {
308 $totalCombinations++
;
312 return array($totalCombinations == 1, $totalCombinations <= 0);
316 * sort queries by number of records for the table associated with them.
317 * @param $tableQueries
319 public static function orderByTableCount(&$tableQueries) {
320 static $tableCount = array();
322 $tempArray = array();
323 foreach ($tableQueries as $key => $query) {
324 $table = explode(".", $key);
326 if (!array_key_exists($table, $tableCount)) {
327 $query = "SELECT COUNT(*) FROM {$table}";
328 $tableCount[$table] = CRM_Core_DAO
::singleValueQuery($query);
330 $tempArray[$key] = $tableCount[$table];
334 foreach ($tempArray as $key => $count) {
335 $tempArray[$key] = $tableQueries[$key];
337 $tableQueries = $tempArray;
341 * Return the SQL query for getting only the interesting results out of the dedupe table.
343 * @$checkPermission boolean $params a flag to indicate if permission should be considered.
344 * default is to always check permissioning but public pages for example might not want
345 * permission to be checked for anonymous users. Refer CRM-6211. We might be beaking
346 * Multi-Site dedupe for public pages.
348 public function thresholdQuery($checkPermission = TRUE) {
349 $this->_aclFrom
= '';
350 // CRM-6603: anonymous dupechecks side-step ACLs
351 $this->_aclWhere
= ' AND is_deleted = 0 ';
353 if ($this->params
&& !$this->noRules
) {
354 if ($checkPermission) {
355 list($this->_aclFrom
, $this->_aclWhere
) = CRM_Contact_BAO_Contact_Permission
::cacheClause('civicrm_contact');
356 $this->_aclWhere
= $this->_aclWhere ?
"AND {$this->_aclWhere}" : '';
358 $query = "SELECT dedupe.id1 as id
359 FROM dedupe JOIN civicrm_contact ON dedupe.id1 = civicrm_contact.id {$this->_aclFrom}
360 WHERE contact_type = '{$this->contact_type}' {$this->_aclWhere}
361 AND weight >= {$this->threshold}";
364 $this->_aclWhere
= ' AND c1.is_deleted = 0 AND c2.is_deleted = 0';
365 if ($checkPermission) {
366 list($this->_aclFrom
, $this->_aclWhere
) = CRM_Contact_BAO_Contact_Permission
::cacheClause(array('c1', 'c2'));
367 $this->_aclWhere
= $this->_aclWhere ?
"AND {$this->_aclWhere}" : '';
369 $query = "SELECT dedupe.id1, dedupe.id2, dedupe.weight
370 FROM dedupe JOIN civicrm_contact c1 ON dedupe.id1 = c1.id
371 JOIN civicrm_contact c2 ON dedupe.id2 = c2.id {$this->_aclFrom}
372 LEFT JOIN civicrm_dedupe_exception exc ON dedupe.id1 = exc.contact_id1 AND dedupe.id2 = exc.contact_id2
373 WHERE c1.contact_type = '{$this->contact_type}' AND
374 c2.contact_type = '{$this->contact_type}' {$this->_aclWhere}
375 AND weight >= {$this->threshold} AND exc.contact_id1 IS NULL";
378 CRM_Utils_Hook
::dupeQuery($this, 'threshold', $query);
383 * find fields related to a rule group.
385 * @param array $params
388 * (rule field => weight) array and threshold associated to rule group
390 public static function dedupeRuleFieldsWeight($params) {
391 $rgBao = new CRM_Dedupe_BAO_RuleGroup();
392 $rgBao->contact_type
= $params['contact_type'];
393 if (!empty($params['id'])) {
394 // accept an ID if provided
395 $rgBao->id
= $params['id'];
398 $rgBao->used
= $params['used'];
402 $ruleBao = new CRM_Dedupe_BAO_Rule();
403 $ruleBao->dedupe_rule_group_id
= $rgBao->id
;
405 $ruleFields = array();
406 while ($ruleBao->fetch()) {
407 $ruleFields[$ruleBao->rule_field
] = $ruleBao->rule_weight
;
410 return array($ruleFields, $rgBao->threshold
);
414 * Get all of the combinations of fields that would work with a rule.
416 public static function combos($rgFields, $threshold, &$combos, $running = array()) {
417 foreach ($rgFields as $rgField => $weight) {
418 unset($rgFields[$rgField]);
419 $diff = $threshold - $weight;
420 $runningnow = $running;
421 $runningnow[] = $rgField;
423 self
::combos($rgFields, $diff, $combos, $runningnow);
426 $combos[] = $runningnow;
432 * Get an array of rule group id to rule group name
433 * for all th groups for that contactType. If contactType
434 * not specified, do it for all
436 * @param string $contactType
437 * Individual, Household or Organization.
441 * id => "nice name" of rule group
443 public static function getByType($contactType = NULL) {
444 $dao = new CRM_Dedupe_DAO_RuleGroup();
447 $dao->contact_type
= $contactType;
452 while ($dao->fetch()) {
453 $title = !empty($dao->title
) ?
$dao->title
: (!empty($dao->name
) ?
$dao->name
: $dao->contact_type
);
455 $name = "$title - {$dao->used}";
456 $result[$dao->id
] = $name;