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<?php |
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/** |
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* Created by PhpStorm. |
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* User: Adrian Dumitru |
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* Date: 8/15/2017 |
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* Time: 12:15 PM |
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*/ |
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namespace Qpdb\QueryBuilder\Traits; |
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use Qpdb\Common\Helpers\Arrays; |
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use Qpdb\Common\Helpers\Strings; |
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use Qpdb\QueryBuilder\Dependencies\QueryException; |
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use Qpdb\QueryBuilder\Dependencies\QueryStructure; |
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/** |
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* Trait SelectFields |
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* @package Qpdb\QueryBuilder\Traits |
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* @property QueryStructure $queryStructure |
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*/ |
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trait SelectFields |
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{ |
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public function fields( ...$fields ) { |
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$fields = Arrays::flattenValues( $this->normalizeFields( $fields ), true ); |
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foreach ( $fields as $field ) { |
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$field = Strings::removeMultipleSpace( $field, true ); |
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if ( '' === $field ) { |
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continue; |
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} |
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if ( str_word_count( $field ) === 1 ) { |
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$this->queryStructure->setElement( QueryStructure::FIELDS, $this->queryStructure->prepare( $field ) ); |
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} else { |
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$fieldParts = explode( ' ', $field ); |
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$fieldName = $this->queryStructure->prepare( $fieldParts[ 0 ] ); |
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array_shift( $fieldParts ); |
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$fieldAlias = $this->queryStructure->prepare( implode( ' ', $fieldParts ) ); |
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$this->fieldExpression( $fieldName, $fieldAlias ); |
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} |
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} |
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return $this; |
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} |
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/** |
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* @param $field |
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* @param null|string $alias |
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* @return $this |
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* @throws QueryException |
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*/ |
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public function fieldExpression( $field, $alias = null ) { |
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$field = trim( $field ); |
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if ( '' !== $alias ) { |
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$field .= ' ' . $alias; |
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} |
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$this->queryStructure->setElement( QueryStructure::FIELDS, $field ); |
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return $this; |
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} |
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private function normalizeFields( $fields ) { |
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$array = Arrays::flattenValues( $fields ); |
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$array = (array)$array; |
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$return = array(); |
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array_walk_recursive( $array, function( $a ) use ( &$return ) { |
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$a = explode( ',', $a ); |
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$return[] = $a; |
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} ); |
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return $return; |
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} |
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/** |
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* @return string |
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*/ |
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private function getSelectFieldsSyntax() { |
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if ( empty( $this->queryStructure->getElement( QueryStructure::FIELDS ) ) ) { |
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return '*'; |
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} |
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return implode( ', ', (array)$this->queryStructure->getElement( QueryStructure::FIELDS )); |
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} |
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} |
adumitru68 /
QueryBuilder
