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sites/all/modules/civicrm/CRM/Dedupe/BAO/Rule.php
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243
sites/all/modules/civicrm/CRM/Dedupe/BAO/Rule.php
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<?php
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/*
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+--------------------------------------------------------------------+
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| CiviCRM version 4.7 |
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+--------------------------------------------------------------------+
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| Copyright CiviCRM LLC (c) 2004-2017 |
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+--------------------------------------------------------------------+
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| This file is a part of CiviCRM. |
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| |
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| CiviCRM is free software; you can copy, modify, and distribute it |
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| under the terms of the GNU Affero General Public License |
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| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
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| |
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| CiviCRM is distributed in the hope that it will be useful, but |
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| WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| See the 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 |
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| License and the CiviCRM Licensing Exception along |
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| with this program; if not, contact CiviCRM LLC |
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| at info[AT]civicrm[DOT]org. If you have questions about the |
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| GNU Affero General Public License or the licensing of CiviCRM, |
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| see the CiviCRM license FAQ at http://civicrm.org/licensing |
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+--------------------------------------------------------------------+
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*/
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/**
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*
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* @package CRM
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* @copyright CiviCRM LLC (c) 2004-2017
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* $Id$
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*
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*/
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/**
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* The CiviCRM duplicate discovery engine is based on an
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* algorithm designed by David Strauss <david@fourkitchens.com>.
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*/
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class CRM_Dedupe_BAO_Rule extends CRM_Dedupe_DAO_Rule {
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/**
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* Ids of the contacts to limit the SQL queries (whole-database queries otherwise)
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*/
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var $contactIds = array();
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/**
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* Params to dedupe against (queries against the whole contact set otherwise)
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*/
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var $params = array();
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/**
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* Return the SQL query for the given rule - either for finding matching
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* pairs of contacts, or for matching against the $params variable (if set).
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*
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* @return string
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* SQL query performing the search
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*/
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public function sql() {
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if ($this->params &&
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(!array_key_exists($this->rule_table, $this->params) ||
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!array_key_exists($this->rule_field, $this->params[$this->rule_table])
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)
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) {
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// if params is present and doesn't have an entry for a field, don't construct the clause.
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return NULL;
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}
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// we need to initialise WHERE, ON and USING here, as some table types
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// extend them; $where is an array of required conditions, $on and
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// $using are arrays of required field matchings (for substring and
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// full matches, respectively)
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$where = array();
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$on = array("SUBSTR(t1.{$this->rule_field}, 1, {$this->rule_length}) = SUBSTR(t2.{$this->rule_field}, 1, {$this->rule_length})");
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$using = array($this->rule_field);
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switch ($this->rule_table) {
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case 'civicrm_contact':
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$id = 'id';
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//we should restrict by contact type in the first step
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$sql = "SELECT contact_type FROM civicrm_dedupe_rule_group WHERE id = {$this->dedupe_rule_group_id};";
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$ct = CRM_Core_DAO::singleValueQuery($sql);
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if ($this->params) {
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$where[] = "t1.contact_type = '{$ct}'";
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}
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else {
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$where[] = "t1.contact_type = '{$ct}'";
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$where[] = "t2.contact_type = '{$ct}'";
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}
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break;
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case 'civicrm_address':
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$id = 'contact_id';
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$on[] = 't1.location_type_id = t2.location_type_id';
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$using[] = 'location_type_id';
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if ($this->params['civicrm_address']['location_type_id']) {
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$locTypeId = CRM_Utils_Type::escape($this->params['civicrm_address']['location_type_id'], 'Integer', FALSE);
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if ($locTypeId) {
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$where[] = "t1.location_type_id = $locTypeId";
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}
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}
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break;
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case 'civicrm_email':
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case 'civicrm_im':
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case 'civicrm_openid':
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case 'civicrm_phone':
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$id = 'contact_id';
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break;
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case 'civicrm_note':
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$id = 'entity_id';
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if ($this->params) {
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$where[] = "t1.entity_table = 'civicrm_contact'";
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}
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else {
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$where[] = "t1.entity_table = 'civicrm_contact'";
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$where[] = "t2.entity_table = 'civicrm_contact'";
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}
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break;
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default:
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// custom data tables
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if (preg_match('/^civicrm_value_/', $this->rule_table) || preg_match('/^custom_value_/', $this->rule_table)) {
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$id = 'entity_id';
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}
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else {
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CRM_Core_Error::fatal("Unsupported rule_table for civicrm_dedupe_rule.id of {$this->id}");
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}
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break;
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}
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// build SELECT based on the field names containing contact ids
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// if there are params provided, id1 should be 0
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if ($this->params) {
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$select = "t1.$id id1, {$this->rule_weight} weight";
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$subSelect = 'id1, weight';
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}
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else {
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$select = "t1.$id id1, t2.$id id2, {$this->rule_weight} weight";
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$subSelect = 'id1, id2, weight';
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}
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// build FROM (and WHERE, if it's a parametrised search)
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// based on whether the rule is about substrings or not
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if ($this->params) {
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$from = "{$this->rule_table} t1";
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$str = 'NULL';
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if (isset($this->params[$this->rule_table][$this->rule_field])) {
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$str = CRM_Utils_Type::escape($this->params[$this->rule_table][$this->rule_field], 'String');
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}
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if ($this->rule_length) {
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$where[] = "SUBSTR(t1.{$this->rule_field}, 1, {$this->rule_length}) = SUBSTR('$str', 1, {$this->rule_length})";
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$where[] = "t1.{$this->rule_field} IS NOT NULL";
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$where[] = "t1.{$this->rule_field} <> ''";
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}
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else {
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$where[] = "t1.{$this->rule_field} = '$str'";
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}
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}
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else {
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if ($this->rule_length) {
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$from = "{$this->rule_table} t1 JOIN {$this->rule_table} t2 ON (" . implode(' AND ', $on) . ")";
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}
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else {
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$from = "{$this->rule_table} t1 JOIN {$this->rule_table} t2 USING (" . implode(', ', $using) . ")";
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}
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}
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// finish building WHERE, also limit the results if requested
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if (!$this->params) {
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$where[] = "t1.$id < t2.$id";
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$where[] = "t1.{$this->rule_field} IS NOT NULL";
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$where[] = "t1.{$this->rule_field} <> ''";
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}
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$query = "SELECT $select FROM $from WHERE " . implode(' AND ', $where);
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if ($this->contactIds) {
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$cids = array();
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foreach ($this->contactIds as $cid) {
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$cids[] = CRM_Utils_Type::escape($cid, 'Integer');
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}
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if (count($cids) == 1) {
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$query .= " AND (t1.$id = {$cids[0]}) UNION $query AND t2.$id = {$cids[0]}";
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}
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else {
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$query .= " AND t1.$id IN (" . implode(',', $cids) . ")
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UNION $query AND t2.$id IN (" . implode(',', $cids) . ")";
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}
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// The `weight` is ambiguous in the context of the union; put the whole
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// thing in a subquery.
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$query = "SELECT $subSelect FROM ($query) subunion";
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}
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return $query;
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}
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/**
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* find fields related to a rule group.
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*
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* @param array $params contains the rule group property to identify rule group
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*
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* @return array
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* rule fields array associated to rule group
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*/
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public static function dedupeRuleFields($params) {
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$rgBao = new CRM_Dedupe_BAO_RuleGroup();
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$rgBao->used = $params['used'];
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$rgBao->contact_type = $params['contact_type'];
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$rgBao->find(TRUE);
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$ruleBao = new CRM_Dedupe_BAO_Rule();
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$ruleBao->dedupe_rule_group_id = $rgBao->id;
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$ruleBao->find();
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$ruleFields = array();
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while ($ruleBao->fetch()) {
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$ruleFields[] = $ruleBao->rule_field;
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}
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return $ruleFields;
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}
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/**
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* @param int $cid
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* @param int $oid
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*
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* @return bool
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*/
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public static function validateContacts($cid, $oid) {
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if (!$cid || !$oid) {
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return NULL;
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}
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$exception = new CRM_Dedupe_DAO_Exception();
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$exception->contact_id1 = $cid;
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$exception->contact_id2 = $oid;
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//make sure contact2 > contact1.
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if ($cid > $oid) {
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$exception->contact_id1 = $oid;
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$exception->contact_id2 = $cid;
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}
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return $exception->find(TRUE) ? FALSE : TRUE;
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}
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}
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