73 lines
2.3 KiB
PHP
73 lines
2.3 KiB
PHP
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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\db\oci\conditions;
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use yii\db\conditions\InCondition;
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use yii\db\ExpressionInterface;
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/**
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* {@inheritdoc}
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*/
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class InConditionBuilder extends \yii\db\conditions\InConditionBuilder
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{
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/**
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* Method builds the raw SQL from the $expression that will not be additionally
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* escaped or quoted.
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*
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* @param ExpressionInterface|InCondition $expression the expression to be built.
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* @param array $params the binding parameters.
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* @return string the raw SQL that will not be additionally escaped or quoted.
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*/
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public function build(ExpressionInterface $expression, array &$params = [])
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{
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$splitCondition = $this->splitCondition($expression, $params);
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if ($splitCondition !== null) {
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return $splitCondition;
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}
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return parent::build($expression, $params);
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}
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/**
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* Oracle DBMS does not support more than 1000 parameters in `IN` condition.
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* This method splits long `IN` condition into series of smaller ones.
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*
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* @param ExpressionInterface|InCondition $condition the expression to be built.
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* @param array $params the binding parameters.
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* @return null|string null when split is not required. Otherwise - built SQL condition.
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*/
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protected function splitCondition(InCondition $condition, &$params)
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{
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$operator = $condition->getOperator();
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$values = $condition->getValues();
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$column = $condition->getColumn();
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if ($values instanceof \Traversable) {
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$values = iterator_to_array($values);
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}
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if (!is_array($values)) {
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return null;
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}
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$maxParameters = 1000;
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$count = count($values);
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if ($count <= $maxParameters) {
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return null;
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}
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$slices = [];
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for ($i = 0; $i < $count; $i += $maxParameters) {
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$slices[] = $this->queryBuilder->createConditionFromArray([$operator, $column, array_slice($values, $i, $maxParameters)]);
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}
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array_unshift($slices, ($operator === 'IN') ? 'OR' : 'AND');
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return $this->queryBuilder->buildCondition($slices, $params);
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}
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}
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