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124 lines
3.6 KiB
PHP
124 lines
3.6 KiB
PHP
<?php
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/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM - Open Source CRM application.
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* Copyright (C) 2014-2021 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
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* Website: https://www.espocrm.com
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*
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* EspoCRM is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* EspoCRM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with EspoCRM. If not, see http://www.gnu.org/licenses/.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
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************************************************************************/
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namespace Espo\ORM;
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use Espo\ORM\{
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Query\SelectBuilder,
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Query\UpdateBuilder,
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Query\DeleteBuilder,
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Query\InsertBuilder,
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Query\UnionBuilder,
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Query\Query,
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Query\Builder,
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Query\Part\Expression,
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};
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use ReflectionClass;
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use RuntimeException;
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/**
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* Creates query builders for specific query types.
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*/
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class QueryBuilder
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{
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/**
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* Specify SELECT. Columns and expressions to be selected. If not called, then
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* all entity attributes will be selected. Passing an array will reset
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* previously set items. Passing a string will append an item.
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*
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* Usage options:
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* * `select([$expr1, $expr2, ...])`
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* * `select([[$expr1, $alias1], [$expr2, $alias2], ...])`
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* * `select(string|Expression $expression)`
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* * `select(string|Expression $expression, string $alias)`
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*
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* @param array|string|Expression $select An array of attributes or one attribute.
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* @param string|null $alias An alias. Actual if the first parameter is a string.
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*/
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public function select($select = null, ?string $alias = null): SelectBuilder
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{
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$builder = new SelectBuilder();
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if ($select === null) {
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return $builder;
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}
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return $builder->select($select, $alias);
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}
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/**
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* Proceed with UPDATE builder.
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*/
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public function update(): UpdateBuilder
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{
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return new UpdateBuilder();
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}
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/**
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* Proceed with DELETE builder.
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*/
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public function delete(): DeleteBuilder
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{
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return new DeleteBuilder();
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}
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/**
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* Proceed with INSERT builder.
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*/
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public function insert(): InsertBuilder
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{
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return new InsertBuilder();
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}
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/**
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* Proceed with UNION builder.
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*/
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public function union(): UnionBuilder
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{
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return new UnionBuilder();
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}
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/**
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* Clone an existing query and proceed modifying it.
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*/
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public function clone(Query $query): Builder
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{
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$class = new ReflectionClass($query);
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$methodName = ucfirst($class->getShortName());
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if (!method_exists($this, $methodName)) {
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throw new RuntimeException("Can't clone an unsupported query.");
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}
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return $this->$methodName()->clone($query);
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}
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}
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