PHP SQLSelect::getWhere方法代码示例

 /**
  * Return a list of SQL where conditions (flattened as a list of strings)
  * 
  * @return array
  */
 public function getWhere()
 {
     Deprecation::notice('4.0', 'SQLQuery::getWhere is non-parameterised for backwards compatibility. ' . 'Use ->toAppropriateExpression()->getWhere() instead');
     $conditions = parent::getWhere();
     // This is where any benefits of parameterised queries die
     return $this->getParameterInjector()->injectConditions($conditions);
 }

 /**
  * Remove a filter from the query
  *
  * @param string|array $fieldExpression The predicate of the condition to remove
  * (ignoring parameters). The expression will be considered a match if it's
  * contained within any other predicate.
  * @return DataQuery Self reference
  */
 public function removeFilterOn($fieldExpression)
 {
     $matched = false;
     // If given a parameterised condition extract only the condition
     if (is_array($fieldExpression)) {
         reset($fieldExpression);
         $fieldExpression = key($fieldExpression);
     }
     $where = $this->query->getWhere();
     // Iterate through each condition
     foreach ($where as $i => $condition) {
         // Rewrite condition groups as plain conditions before comparison
         if ($condition instanceof SQLConditionGroup) {
             $predicate = $condition->conditionSQL($parameters);
             $condition = array($predicate => $parameters);
         }
         // As each condition is a single length array, do a single
         // iteration to extract the predicate and parameters
         foreach ($condition as $predicate => $parameters) {
             // @see SQLSelect::addWhere for why this is required here
             if (strpos($predicate, $fieldExpression) !== false) {
                 unset($where[$i]);
                 $matched = true;
             }
             // Enforce single-item condition predicate => parameters structure
             break;
         }
     }
     // set the entire where clause back, but clear the original one first
     if ($matched) {
         $this->query->setWhere($where);
     } else {
         throw new InvalidArgumentException("Couldn't find {$fieldExpression} in the query filter.");
     }
     return $this;
 }

 public function conditionSQL(&$parameters)
 {
     $parameters = array();
     // Ignore empty conditions
     $where = $this->whereQuery->getWhere();
     if (empty($where)) {
         return null;
     }
     // Allow database to manage joining of conditions
     $sql = DB::get_conn()->getQueryBuilder()->buildWhereFragment($this->whereQuery, $parameters);
     return preg_replace('/^\\s*WHERE\\s*/i', '', $sql);
 }

 /**
  * Changes any SELECT query thats not filtering on an ID
  * to limit by the current language defined in {@link get_current_locale()}.
  * It falls back to "Locale='' OR Lang IS NULL" and assumes that
  * this implies querying for the default language.
  * 
  * Use {@link disable_locale_filter()} to temporarily disable this "auto-filtering".
  */
 public function augmentSQL(SQLSelect $query, DataQuery $dataQuery = null)
 {
     // If the record is saved (and not a singleton), and has a locale,
     // limit the current call to its locale. This fixes a lot of problems
     // with other extensions like Versioned
     if ($this->owner->ID && !empty($this->owner->Locale)) {
         $locale = $this->owner->Locale;
     } else {
         $locale = Translatable::get_current_locale();
     }
     $baseTable = ClassInfo::baseDataClass($this->owner->class);
     if ($locale && self::locale_filter_enabled() && $dataQuery->getQueryParam(self::QUERY_LOCALE_FILTER_ENABLED) && !$query->filtersOnID() && array_search($baseTable, array_keys($query->getFrom())) !== false) {
         // Or we're already filtering by Lang (either from an earlier augmentSQL()
         // call or through custom SQL filters)
         $filtersOnLocale = array_filter($query->getWhere(), function ($predicates) {
             foreach ($predicates as $predicate => $params) {
                 if (preg_match('/("|\'|`)Locale("|\'|`)/', $predicate)) {
                     return true;
                 }
             }
         });
         if (!$filtersOnLocale) {
             $qry = sprintf('"%s"."Locale" = \'%s\'', $baseTable, Convert::raw2sql($locale));
             $query->addWhere($qry);
         }
     }
 }