Constructs a new traversable object from the supplied elements.
/**
* @dataProvider schemes
*/
public function testThatArrayCompatibleIsUsedForIndexBy(IIteratorScheme $scheme)
{
$iterator = Traversable::from([1, 2, 3], $scheme)->indexBy(function () {
return new \stdClass();
})->getIterator();
$this->assertInstanceOf(get_class($scheme->arrayCompatibleIterator(new \EmptyIterator())), $iterator);
}
protected function retrieveValues(\PDOStatement $statement)
{
$statement->setFetchMode(\PDO::FETCH_ASSOC);
switch ($this->retrievalMode) {
case Values::AS_ARRAY:
return $statement->fetchAll();
case Values::AS_ARRAY_COMPATIBLE_ITERATOR:
return new \IteratorIterator($statement);
case Values::AS_TRUE_ITERATOR:
return new \IteratorIterator($statement);
case Values::AS_TRAVERSABLE:
return Traversable::from($statement);
case Values::AS_COLLECTION:
return Collection::from($statement);
default:
throw new PinqDemoSqlException('Unsupported value retrieval mode');
}
}
/**
* @dataProvider interpreters
*/
public function testAliasedTypeHintClass()
{
$valueSet = [[Traversable::from([])]];
$this->assertRecompilesCorrectly(function (AliasedTraversable $traversable) {
return $traversable;
}, $valueSet);
}
public function testComputesResultsFromUsingMostApplicableParentRequest()
{
$sourceExpression = $this->queryable->getExpression();
$this->queryResultsCollection->saveResults($sourceExpression, \Pinq\Traversable::from([1])->select(function () {
$this->assertTrue(false, 'Source expression results should not be called');
})->getIterator());
$subscopeQueryable = $this->queryable->skip(5);
$this->queryResultsCollection->saveResults($subscopeQueryable->getExpression(), [5, 6, 7, 8, 0]);
$subSubscopeQueryable = $subscopeQueryable->select(function ($i) {
return $i * 10;
})->indexBy(function ($i) {
return $i / 5;
});
$this->assertTrue($this->queryResultsCollection->tryComputeResults($subSubscopeQueryable->getExpression(), $results));
$this->assertInstanceOf(ITraversable::ITRAVERSABLE_TYPE, $results);
/** @var $results ITraversable */
$this->assertSame([10 => 50, 12 => 60, 14 => 70, 16 => 80, 0 => 0], $results->asArray());
}
/**
* @expectedException \Pinq\PinqException
*/
public function testCompiledRequestQueryHasherThrowsExceptionForQueryableWithoutDSLProvider()
{
$hasher = ParameterHasher::compiledRequestQuery();
$hasher->hash((new \Pinq\Providers\Traversable\Provider(Traversable::from([])))->createQueryable());
}