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<?php declare(strict_types=1); |
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namespace Compolomus\LSQLQueryBuilder\Parts; |
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use Compolomus\LSQLQueryBuilder\System\{ |
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Traits\Helper, |
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Traits\Caller |
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}; |
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class Join |
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{ |
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use Caller, Helper; |
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private $table; |
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private $onPairs; |
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private $using = null; |
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private $alias = null; |
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private $joinType = null; |
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private $joinTypes = ['left', 'right', 'cross', 'inner']; //TODO: add types |
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private $counter = 0; |
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public function __construct(string $table, ?string $alias = null, array $onPairs = [], string $joinType = 'left') |
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{ |
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$this->join($table, $alias, $onPairs, $joinType); |
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} |
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public function debug() |
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{ |
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echo '<pre>' . print_r($this, true) . '</pre>'; |
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return $this; |
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} |
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public function join(string $table, ?string $alias = null, array $onPairs = [], string $joinType = 'left'): Join |
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{ |
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$this->counter++; |
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$this->table[$this->counter] = $table; |
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$this->addOn($onPairs); |
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$this->setAlias($alias); |
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$this->setType($joinType); |
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return $this; |
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} |
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public function setType(string $joinType): Join |
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{ |
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if (!in_array($joinType, $this->joinTypes)) { |
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throw new \InvalidArgumentException('DIE |JOIN construct|'); |
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} |
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$this->joinType[$this->counter] = $joinType; |
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return $this; |
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} |
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public function setAlias(?string $alias): Join |
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{ |
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if (!is_null($alias)) { |
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$this->alias[$this->counter] = $alias; |
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} |
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return $this; |
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} |
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public function getTable(int $counter): string |
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{ |
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return (!is_null($this->alias[$counter])) ? $this->escapeField($this->alias[$counter]) : $this->escapeField($this->table[$counter]); |
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} |
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public function using(string $field): Join |
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{ |
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$this->using = $this->escapeField($field); |
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return $this; |
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} |
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public function addOn(array $onPairs): Join |
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{ |
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if (count($onPairs)) { |
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$this->onPairs[$this->counter] = $onPairs; |
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} |
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return $this; |
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} |
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private function onMap(): ?string |
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{ |
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if (!empty($this->onPairs)) { |
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$result = []; |
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foreach ($this->table as $counter => $join) { |
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$result[] = $this->concatWhere(array_map(function ($item) use ($join, $counter) { |
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return $this->base->table() . '.' . $this->escapeField($item[0]) . ' = ' . $this->escapeField($join) . '.' . $this->escapeField($item[1]); |
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}, $this->onPairs[$counter])); |
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} |
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return ' ON ' . $this->concatWhere($result); |
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} |
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return null; |
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} |
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public function result(): ?string |
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{ |
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$result = []; |
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foreach ($this->table as $counter => $join) { |
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$result[] = ' ' . strtoupper($this->joinType[$counter]) . ' JOIN ' |
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. $this->escapeField($join) |
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. (!is_null($this->alias[$counter]) ? ' AS ' . $this->escapeField($this->alias[$counter]) : ''); |
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} |
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$result[] = ($this->onMap() |
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? $this->onMap() |
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: (!is_null($this->using) |
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? ' USING(' . $this->using . ')' |
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: '' |
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) |
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); |
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return implode(' ', $result); |
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} |
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} |
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Compolomus /
SQLQueryBuilder
