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<?php |
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namespace Elgg\Database\Clauses; |
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use Elgg\Database\QueryBuilder; |
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/** |
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* Builds clauses for filtering entities by their type and subtype |
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*/ |
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class TypeSubtypeWhereClause extends WhereClause { |
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/** |
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* @var string |
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*/ |
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public $type_column = 'type'; |
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/** |
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* @var string |
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*/ |
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public $subtype_column = 'subtype'; |
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/** |
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* @var array |
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*/ |
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public $type_subtype_pairs = []; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function prepare(QueryBuilder $qb, $table_alias = null) { |
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$alias = function ($column) use ($table_alias) { |
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return $table_alias ? "{$table_alias}.{$column}" : $column; |
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}; |
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$types_where = []; |
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if (!empty($this->type_subtype_pairs)) { |
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foreach ($this->type_subtype_pairs as $type => $subtypes) { |
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if (is_array($subtypes) && !empty($subtypes)) { |
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$types_where[] = $qb->merge([ |
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$qb->compare($alias($this->type_column), '=', $type, ELGG_VALUE_STRING), |
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$qb->compare($alias($this->subtype_column), '=', $subtypes, ELGG_VALUE_STRING), |
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]); |
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} else { |
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$types_where[] = $qb->compare($alias($this->type_column), '=', $type, ELGG_VALUE_STRING); |
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} |
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} |
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} |
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if (!empty($types_where)) { |
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$wheres[] = $qb->merge($types_where, 'OR'); |
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} |
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$wheres[] = parent::prepare($qb, $table_alias); |
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return $qb->merge($wheres); |
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} |
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} |
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