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<?php |
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namespace Pinq; |
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use Pinq\Expressions as O; |
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use Pinq\Iterators\IIteratorScheme; |
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use Pinq\Queries\Requests; |
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use Pinq\Queries\Segments; |
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/** |
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* The standard queryable class, fully implements the queryable API |
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* |
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* @author Elliot Levin <[email protected]> |
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*/ |
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class Queryable extends QueryBuilder implements IQueryable, Interfaces\IOrderedQueryable |
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{ |
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/** |
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* @var Queries\ISourceInfo |
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*/ |
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protected $sourceInfo; |
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/** |
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* @var IIteratorScheme |
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*/ |
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protected $scheme; |
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public function __construct( |
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Providers\IQueryProvider $provider, |
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Queries\ISourceInfo $sourceInfo, |
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O\TraversalExpression $queryExpression = null, |
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IIteratorScheme $scheme = null |
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) { |
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parent::__construct($provider); |
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$this->sourceInfo = $sourceInfo; |
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$this->expression = $queryExpression ?: O\Expression::value($this); |
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$this->scheme = $scheme ?: Iterators\SchemeProvider::getDefault(); |
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} |
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/** |
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* Returns the requested query from the query provider. |
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* |
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* @param O\Expression $expression |
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* |
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* @return mixed The result of the request query |
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*/ |
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final protected function loadQuery(O\Expression $expression) |
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{ |
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return $this->provider->load($expression); |
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} |
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public function getExpression() |
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{ |
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return $this->expression; |
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} |
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public function getSourceInfo() |
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{ |
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return $this->sourceInfo; |
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} |
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public function isSource() |
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{ |
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return $this->expression instanceof O\ValueExpression && $this->expression->getValue() === $this; |
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} |
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public function getSource() |
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{ |
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if ($this->isSource()) { |
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return $this; |
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} else { |
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$expression = $this->expression; |
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while ($expression instanceof O\TraversalExpression) { |
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$expression = $expression->getValue(); |
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} |
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if ($expression instanceof O\ValueExpression) { |
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return $expression->getValue(); |
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} else { |
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throw new PinqException( |
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'Invalid origin expression: must be instance of %s', |
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O\ValueExpression::getType()); |
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} |
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} |
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} |
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final public function asArray() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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final public function getIterator() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function getTrueIterator() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function asTraversable() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function asCollection() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function getIteratorScheme() |
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{ |
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return $this->scheme; |
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} |
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public function iterate(callable $function) |
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{ |
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$this->scheme->walk($this->getTrueIterator(), $function); |
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} |
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final public function getProvider() |
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{ |
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return $this->provider; |
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} |
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// <editor-fold defaultstate="collapsed" desc="Query segments"> |
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public function select(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function selectMany(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function indexBy(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function keys() |
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{ |
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return $this->newMethodSegment(__FUNCTION__); |
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} |
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public function reindex() |
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{ |
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return $this->newMethodSegment(__FUNCTION__); |
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} |
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public function where(callable $predicate) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$predicate]); |
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} |
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public function groupBy(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function join($values) |
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{ |
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return new Connectors\JoiningQueryable($this->provider, $this->newMethod(__FUNCTION__, [$values])); |
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} |
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public function groupJoin($values) |
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{ |
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return new Connectors\JoiningQueryable($this->provider, $this->newMethod(__FUNCTION__, [$values])); |
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} |
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public function union($values) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$values]); |
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} |
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public function intersect($values) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$values]); |
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} |
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public function difference($values) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$values]); |
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} |
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public function append($values) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$values]); |
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} |
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public function whereIn($values) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$values]); |
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} |
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public function except($values) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$values]); |
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} |
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public function skip($amount) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$amount]); |
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} |
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public function take($amount) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$amount]); |
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} |
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public function slice($start, $amount) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$start, $amount]); |
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} |
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public function orderBy(callable $function, $direction) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function, $direction]); |
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} |
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public function orderByAscending(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function orderByDescending(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function thenBy(callable $function, $direction) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function, $direction]); |
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} |
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public function thenByAscending(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function thenByDescending(callable $function) |
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{ |
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return $this->newMethodSegment(__FUNCTION__, [$function]); |
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} |
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public function unique() |
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{ |
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return $this->newMethodSegment(__FUNCTION__); |
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} |
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// </editor-fold> |
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// <editor-fold defaultstate="collapsed" desc="Query Requests"> |
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public function offsetExists($index) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$index])); |
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} |
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public function offsetGet($index) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$index])); |
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} |
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public function offsetSet($index, $value) |
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{ |
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throw PinqException::notSupported(__METHOD__); |
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} |
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public function offsetUnset($index) |
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{ |
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throw PinqException::notSupported(__METHOD__); |
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} |
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public function first() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function last() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function count() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function isEmpty() |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__)); |
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} |
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public function contains($value) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$value])); |
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} |
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public function aggregate(callable $function) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function all(callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function any(callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function maximum(callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function minimum(callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function sum(callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function average(callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$function])); |
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} |
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public function implode($delimiter, callable $function = null) |
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{ |
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return $this->loadQuery($this->newMethod(__FUNCTION__, [$delimiter, $function])); |
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} |
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// </editor-fold> |
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} |
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