3 +--------------------------------------------------------------------+
4 | CiviCRM version 4.5 |
5 +--------------------------------------------------------------------+
6 | Copyright CiviCRM LLC (c) 2004-2014 |
7 +--------------------------------------------------------------------+
8 | This file is a part of CiviCRM. |
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. |
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25 +--------------------------------------------------------------------+
31 * @copyright CiviCRM LLC (c) 2004-2014
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 $requestedType the requested contact type
62 * @return array a table-keyed array of field-keyed arrays holding supported fields' titles
64 static function &supportedFields($requestedType) {
65 static $fields = NULL;
67 // this is needed, as we're piggy-backing importableFields() below
68 $replacements = array(
69 'civicrm_country.name' => 'civicrm_address.country_id',
70 'civicrm_county.name' => 'civicrm_address.county_id',
71 'civicrm_state_province.name' => 'civicrm_address.state_province_id',
72 'gender.label' => 'civicrm_contact.gender_id',
73 'individual_prefix.label' => 'civicrm_contact.prefix_id',
74 'individual_suffix.label' => 'civicrm_contact.suffix_id',
75 'addressee.label' => 'civicrm_contact.addressee_id',
76 'email_greeting.label' => 'civicrm_contact.email_greeting_id',
77 'postal_greeting.label' => 'civicrm_contact.postal_greeting_id',
79 // the table names we support in dedupe rules - a filter for importableFields()
80 $supportedTables = array(
81 'civicrm_address', 'civicrm_contact', 'civicrm_email',
82 'civicrm_im', 'civicrm_note', 'civicrm_openid', 'civicrm_phone',
85 foreach (array('Individual', 'Organization', 'Household') as $ctype) {
86 // take the table.field pairs and their titles from importableFields() if the table is supported
87 foreach (CRM_Contact_BAO_Contact
::importableFields($ctype) as $iField) {
88 if (isset($iField['where'])) {
89 $where = $iField['where'];
90 if (isset($replacements[$where])) {
91 $where = $replacements[$where];
93 list($table, $field) = explode('.', $where);
94 if (!in_array($table, $supportedTables)) {
97 $fields[$ctype][$table][$field] = $iField['title'];
100 // add custom data fields
101 foreach (CRM_Core_BAO_CustomGroup
::getTree($ctype, CRM_Core_DAO
::$_nullObject, NULL, -1) as $key => $cg) {
105 foreach ($cg['fields'] as $cf) {
106 $fields[$ctype][$cg['table_name']][$cf['column_name']] = $cf['label'];
111 CRM_Utils_Hook
::dupeQuery(CRM_Core_DAO
::$_nullObject, 'supportedFields', $fields);
112 return $fields[$requestedType];
116 * Return the SQL query for dropping the temporary table.
118 function tableDropQuery() {
119 return 'DROP TEMPORARY TABLE IF EXISTS dedupe';
123 * Return a set of SQL queries whose cummulative weights will mark matched
124 * records for the RuleGroup::threasholdQuery() to retrieve.
126 function tableQuery() {
127 // make sure we've got a fetched dbrecord, not sure if this is enforced
128 if (!$this->name
== NULL ||
$this->is_reserved
== NULL) {
132 // Reserved Rule Groups can optionally get special treatment by
133 // implementing an optimization class and returning a query array.
134 if ($this->is_reserved
&&
135 CRM_Utils_File
::isIncludable("CRM/Dedupe/BAO/QueryBuilder/{$this->name}.php")
137 include_once "CRM/Dedupe/BAO/QueryBuilder/{$this->name}.php";
138 $class = "CRM_Dedupe_BAO_QueryBuilder_{$this->name}";
139 $command = empty($this->params
) ?
'internal' : 'record';
140 $queries = call_user_func(array($class, $command), $this);
143 // All other rule groups have queries generated by the member dedupe
144 // rules defined in the administrative interface.
146 // Find all rules contained by this script sorted by weight so that
147 // their execution can be short circuited on RuleGroup::fillTable()
148 $bao = new CRM_Dedupe_BAO_Rule();
149 $bao->dedupe_rule_group_id
= $this->id
;
150 $bao->orderBy('rule_weight DESC');
153 // Generate a SQL query for each rule in the rule group that is
154 // tailored to respect the param and contactId options provided.
156 while ($bao->fetch()) {
157 $bao->contactIds
= $this->contactIds
;
158 $bao->params
= $this->params
;
160 // Skipping empty rules? Empty rules shouldn't exist; why check?
161 if ($query = $bao->sql()) {
162 $queries["{$bao->rule_table}.{$bao->rule_field}.{$bao->rule_weight}"] = $query;
167 // if there are no rules in this rule group
168 // add an empty query fulfilling the pattern
170 $queries = array('SELECT 0 id1, 0 id2, 0 weight LIMIT 0');
171 $this->noRules
= TRUE;
177 function fillTable() {
178 // get the list of queries handy
179 $tableQueries = $this->tableQuery();
181 if ($this->params
&& !$this->noRules
) {
182 $tempTableQuery = "CREATE TEMPORARY TABLE dedupe (id1 int, weight int, UNIQUE UI_id1 (id1)) ENGINE=MyISAM";
183 $insertClause = "INSERT INTO dedupe (id1, weight)";
184 $groupByClause = "GROUP BY id1";
185 $dupeCopyJoin = " JOIN dedupe_copy ON dedupe_copy.id1 = t1.column WHERE ";
188 $tempTableQuery = "CREATE TEMPORARY TABLE dedupe (id1 int, id2 int, weight int, UNIQUE UI_id1_id2 (id1, id2)) ENGINE=MyISAM";
189 $insertClause = "INSERT INTO dedupe (id1, id2, weight)";
190 $groupByClause = "GROUP BY id1, id2";
191 $dupeCopyJoin = " JOIN dedupe_copy ON dedupe_copy.id1 = t1.column AND dedupe_copy.id2 = t2.column WHERE ";
193 $patternColumn = '/t1.(\w+)/';
194 $exclWeightSum = array();
197 $dao = new CRM_Core_DAO();
198 $dao->query($tempTableQuery);
201 CRM_Utils_Hook
::dupeQuery($this, 'table', $tableQueries);
203 while (!empty($tableQueries)) {
204 list($isInclusive, $isDie) = self
::isQuerySetInclusive($tableQueries, $this->threshold
, $exclWeightSum);
207 // order queries by table count
208 self
::orderByTableCount($tableQueries);
210 $weightSum = array_sum($exclWeightSum);
211 $searchWithinDupes = !empty($exclWeightSum) ?
1 : 0;
213 while (!empty($tableQueries)) {
214 // extract the next query ( and weight ) to be executed
215 $fieldWeight = array_keys($tableQueries);
216 $fieldWeight = $fieldWeight[0];
217 $query = array_shift($tableQueries);
219 if ($searchWithinDupes) {
220 // get prepared to search within already found dupes if $searchWithinDupes flag is set
221 $dao->query("DROP TEMPORARY TABLE IF EXISTS dedupe_copy");
222 $dao->query("CREATE TEMPORARY TABLE dedupe_copy SELECT * FROM dedupe WHERE weight >= {$weightSum}");
225 preg_match($patternColumn, $query, $matches);
226 $query = str_replace(' WHERE ', str_replace('column', $matches[1], $dupeCopyJoin), $query);
228 $searchWithinDupes = 1;
230 // construct and execute the intermediate query
231 $query = "{$insertClause} {$query} {$groupByClause} ON DUPLICATE KEY UPDATE weight = weight + VALUES(weight)";
234 // FIXME: we need to be more acurate with affected rows, especially for insert vs duplicate insert.
235 // And that will help optimize further.
236 $affectedRows = $dao->affectedRows();
239 // In an inclusive situation, failure of any query means no further processing -
240 if ($affectedRows == 0) {
241 // reset to make sure no further execution is done.
242 $tableQueries = array();
245 $weightSum = substr($fieldWeight, strrpos($fieldWeight, '.') +
1) +
$weightSum;
247 // An exclusive situation -
250 // since queries are already sorted by weights, we can continue as is
251 $fieldWeight = array_keys($tableQueries);
252 $fieldWeight = $fieldWeight[0];
253 $query = array_shift($tableQueries);
254 $query = "{$insertClause} {$query} {$groupByClause} ON DUPLICATE KEY UPDATE weight = weight + VALUES(weight)";
256 if ($dao->affectedRows() >= 1) {
257 $exclWeightSum[] = substr($fieldWeight, strrpos($fieldWeight, '.') +
1);
262 // its a die situation
268 // Function to determine if a given query set contains inclusive or exclusive set of weights.
269 // The function assumes that the query set is already ordered by weight in desc order.
271 * @param $tableQueries
273 * @param array $exclWeightSum
277 static function isQuerySetInclusive($tableQueries, $threshold, $exclWeightSum = array(
280 foreach ($tableQueries as $key => $query) {
281 $input[] = substr($key, strrpos($key, '.') +
1);
284 if (!empty($exclWeightSum)) {
285 $input = array_merge($input, $exclWeightSum);
289 if (count($input) == 1) {
290 return array(FALSE, $input[0] < $threshold);
293 $totalCombinations = 0;
294 for ($i = 0; $i < count($input); $i++
) {
295 $combination = array($input[$i]);
296 if (array_sum($combination) >= $threshold) {
297 $totalCombinations++
;
300 for ($j = $i +
1; $j < count($input); $j++
) {
301 $combination[] = $input[$j];
302 if (array_sum($combination) >= $threshold) {
303 $totalCombinations++
;
307 return array($totalCombinations == 1, $totalCombinations <= 0);
310 // sort queries by number of records for the table associated with them
312 * @param $tableQueries
314 static function orderByTableCount(&$tableQueries) {
315 static $tableCount = array();
317 $tempArray = array();
318 foreach ($tableQueries as $key => $query) {
319 $table = explode(".", $key);
321 if (!array_key_exists($table, $tableCount)) {
322 $query = "SELECT COUNT(*) FROM {$table}";
323 $tableCount[$table] = CRM_Core_DAO
::singleValueQuery($query);
325 $tempArray[$key] = $tableCount[$table];
329 foreach ($tempArray as $key => $count) {
330 $tempArray[$key] = $tableQueries[$key];
332 $tableQueries = $tempArray;
336 * Return the SQL query for getting only the interesting results out of the dedupe table.
338 * @$checkPermission boolean $params a flag to indicate if permission should be considered.
339 * default is to always check permissioning but public pages for example might not want
340 * permission to be checked for anonymous users. Refer CRM-6211. We might be beaking
341 * Multi-Site dedupe for public pages.
344 function thresholdQuery($checkPermission = TRUE) {
345 $this->_aclFrom
= '';
346 // CRM-6603: anonymous dupechecks side-step ACLs
347 $this->_aclWhere
= ' AND is_deleted = 0 ';
349 if ($this->params
&& !$this->noRules
) {
350 if ($checkPermission) {
351 list($this->_aclFrom
, $this->_aclWhere
) = CRM_Contact_BAO_Contact_Permission
::cacheClause('civicrm_contact');
352 $this->_aclWhere
= $this->_aclWhere ?
"AND {$this->_aclWhere}" : '';
354 $query = "SELECT dedupe.id1 as id
355 FROM dedupe JOIN civicrm_contact ON dedupe.id1 = civicrm_contact.id {$this->_aclFrom}
356 WHERE contact_type = '{$this->contact_type}' {$this->_aclWhere}
357 AND weight >= {$this->threshold}";
360 $this->_aclWhere
= ' AND c1.is_deleted = 0 AND c2.is_deleted = 0';
361 if ($checkPermission) {
362 list($this->_aclFrom
, $this->_aclWhere
) = CRM_Contact_BAO_Contact_Permission
::cacheClause(array('c1', 'c2'));
363 $this->_aclWhere
= $this->_aclWhere ?
"AND {$this->_aclWhere}" : '';
365 $query = "SELECT dedupe.id1, dedupe.id2, dedupe.weight
366 FROM dedupe JOIN civicrm_contact c1 ON dedupe.id1 = c1.id
367 JOIN civicrm_contact c2 ON dedupe.id2 = c2.id {$this->_aclFrom}
368 LEFT JOIN civicrm_dedupe_exception exc ON dedupe.id1 = exc.contact_id1 AND dedupe.id2 = exc.contact_id2
369 WHERE c1.contact_type = '{$this->contact_type}' AND
370 c2.contact_type = '{$this->contact_type}' {$this->_aclWhere}
371 AND weight >= {$this->threshold} AND exc.contact_id1 IS NULL";
374 CRM_Utils_Hook
::dupeQuery($this, 'threshold', $query);
379 * To find fields related to a rule group.
383 * @internal param \contains $array the rule group property to identify rule group
385 * @return array (rule field => weight) array and threshold associated to rule group@access public
387 static function dedupeRuleFieldsWeight($params) {
388 $rgBao = new CRM_Dedupe_BAO_RuleGroup();
389 $rgBao->contact_type
= $params['contact_type'];
390 if (CRM_Utils_Array
::value('id', $params)) {
391 // accept an ID if provided
392 $rgBao->id
= $params['id'];
395 $rgBao->used
= $params['used'];
399 $ruleBao = new CRM_Dedupe_BAO_Rule();
400 $ruleBao->dedupe_rule_group_id
= $rgBao->id
;
402 $ruleFields = array();
403 while ($ruleBao->fetch()) {
404 $ruleFields[$ruleBao->rule_field
] = $ruleBao->rule_weight
;
407 return array($ruleFields, $rgBao->threshold
);
411 * Get all of the combinations of fields that would work with a rule
414 static function combos($rgFields, $threshold, &$combos, $running = array()) {
415 foreach ($rgFields as $rgField => $weight) {
416 unset($rgFields[$rgField]);
417 $diff = $threshold - $weight;
418 $runningnow = $running;
419 $runningnow[] = $rgField;
421 self
::combos($rgFields, $diff, $combos, $runningnow);
424 $combos[] = $runningnow;
430 * Get an array of rule group id to rule group name
431 * for all th groups for that contactType. If contactType
432 * not specified, do it for all
434 * @param string $contactType Individual, Household or Organization
438 * @return array id => "nice name" of rule group
440 static function getByType($contactType = NULL) {
441 $dao = new CRM_Dedupe_DAO_RuleGroup();
444 $dao->contact_type
= $contactType;
449 while ($dao->fetch()) {
451 !empty($dao->title
) ?
$dao->title
:
452 (!empty($dao->name
) ?
$dao->name
: $dao->contact_type
);
454 $name = "$title - {$dao->used}";
455 $result[$dao->id
] = $name;