Returns an array of index names for this collection
| public getIndexInfo ( ) : array | ||
| return | array | Returns a list of index names. |
/**
* Ensure index of correct specification and a unique name whether the specification or name already exist or not.
* Will not create index if $index is a prefix of an existing index
*
* @param array $index index to create in same format as \MongoCollection::ensureIndex()
*
* @return void
*
* @throws \Exception couldnt create index after 5 attempts
*/
private function _ensureIndex(array $index)
{
//if $index is a prefix of any existing index we are good
foreach ($this->_collection->getIndexInfo() as $existingIndex) {
$slice = array_slice($existingIndex['key'], 0, count($index), true);
if ($slice === $index) {
return;
}
}
for ($i = 0; $i < 5; ++$i) {
for ($name = uniqid(); strlen($name) > 0; $name = substr($name, 0, -1)) {
//creating an index with same name and different spec does nothing.
//creating an index with same spec and different name does nothing.
//so we use any generated name, and then find the right spec after we have called, and just go with that name.
try {
$this->_collection->ensureIndex($index, array('name' => $name, 'background' => true));
} catch (\MongoException $e) {
//this happens when the name was too long, let continue
}
foreach ($this->_collection->getIndexInfo() as $existingIndex) {
if ($existingIndex['key'] === $index) {
return;
}
}
}
}
throw new \Exception('couldnt create index after 5 attempts');
}
public function testGetIndexInfo()
{
$info = $this->object->getIndexInfo();
$this->assertEquals(count($info), 0);
$this->object->ensureIndex(array('foo' => 1));
$this->object->ensureIndex(array('foo' => -1));
$this->object->ensureIndex(array('bar' => 1, 'baz' => -1));
$info = $this->object->getIndexInfo();
$this->assertEquals(4, count($info), json_encode($info));
$this->assertEquals($info[1]['key']['foo'], 1);
$this->assertEquals($info[1]['name'], 'foo_1');
$this->assertEquals($info[2]['key']['foo'], -1);
$this->assertEquals($info[2]['name'], 'foo_-1');
$this->assertEquals($info[3]['key']['bar'], 1);
$this->assertEquals($info[3]['key']['baz'], -1);
$this->assertEquals($info[3]['name'], 'bar_1_baz_-1');
}
/**
* Wrapper method for MongoCollection::getIndexInfo().
*
* @see http://php.net/manual/en/mongocollection.getindexinfo.php
* @return array
*/
public function getIndexInfo()
{
return $this->mongoCollection->getIndexInfo();
}
/**
* getIndexInfo.
*/
public function getIndexInfo()
{
$this->time->start();
$return = parent::getIndexInfo();
$time = $this->time->stop();
$this->log(array('type' => 'getIndexInfo', 'time' => $time));
return $return;
}
