as2252258@163.com
80 lines
1.3 KiB
PHP
80 lines
1.3 KiB
PHP
<?php
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namespace Database\Traits;
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use Database\ActiveQuery;
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use Database\Query;
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use Exception;
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use JetBrains\PhpStorm\Pure;
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/**
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* Class CaseWhen
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* @package Database\Traits
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*/
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class When
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{
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public ActiveQuery|QueryTrait $query;
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private array $_condition = [];
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private string $else = '';
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/**
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* CaseWhen constructor.
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* @param string $column
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* @param ActiveQuery|QueryTrait $activeQuery
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*/
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public function __construct(public string $column, public ActiveQuery|QueryTrait $activeQuery)
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{
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$this->_condition[] = 'CASE ' . $column;
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}
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/**
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* @param array|string $condition
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* @param string $then
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* @return $this
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* @throws Exception
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*/
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public function when(array|string $condition, string $then): static
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{
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$this->_condition[] = sprintf('WHEN %s THEN %s', $this->activeQuery->makeNewSqlGenerate()
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->where($condition)
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->getCondition(), $then);
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return $this;
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}
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/**
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* @param string $alias
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*/
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public function else(string $alias)
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{
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$this->else = $alias;
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}
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/**
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* @return string
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*/
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#[Pure] public function end(): string
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{
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if (empty($this->_condition)) {
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return '';
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}
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$prefix = implode(' ', $this->_condition);
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if (!empty($this->else)) {
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$prefix .= ' ELSE ' . $this->else;
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}
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return $prefix . ' END';
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}
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}
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