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<?php |
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/** |
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* Copyright 2021 Aleksandar Panic |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace ArekX\PQL\Sql; |
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use ArekX\PQL\Contracts\QueryBuilder; |
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use ArekX\PQL\Contracts\QueryBuilderFactory; |
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use ArekX\PQL\Contracts\QueryBuilderState; |
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use ArekX\PQL\Contracts\RawQuery; |
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use ArekX\PQL\Contracts\StructuredQuery; |
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/** |
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* Represents a sql query builder factory |
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* for mapping queries to builders. |
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*/ |
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abstract class SqlQueryBuilderFactory implements QueryBuilderFactory, QueryBuilder |
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{ |
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/** |
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* Created builder instances. |
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* @var QueryBuilder[] |
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*/ |
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protected $createdBuilders = []; |
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/** |
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* @inheritDoc |
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*/ |
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public function build(StructuredQuery $query, QueryBuilderState $state = null): RawQuery |
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{ |
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return $this->getBuilder($query)->build($query, $state ?: $this->createState()); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getBuilder(StructuredQuery $query): QueryBuilder |
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{ |
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$class = get_class($query); |
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if (empty($this->createdBuilders[$class])) { |
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$this->createdBuilders[$class] = $this->createBuilder($class); |
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} |
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return $this->createdBuilders[$class]; |
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} |
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/** |
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* Create a builder from a query class. |
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* |
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* @param string $queryClass Class of the query to be created. |
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* @return QueryBuilder |
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*/ |
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protected abstract function createBuilder(string $queryClass): QueryBuilder; |
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/** |
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* Create a new state for this query builder. |
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* @return QueryBuilderState |
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*/ |
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protected abstract function createState(): QueryBuilderState; |
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} |
ArekX /
PQL
