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<?php
/*
* Copyright 2015-2017 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace MongoDB\Model;
use MongoDB\BSON\Serializable;
use MongoDB\Exception\InvalidArgumentException;
/**
* Index input model class.
*
* This class is used to validate user input for index creation.
*
* @internal
* @see \MongoDB\Collection::createIndexes()
* @see https://github.com/mongodb/specifications/blob/master/source/enumerate-indexes.rst
* @see http://docs.mongodb.org/manual/reference/method/db.collection.createIndex/
*/
class IndexInput implements Serializable
{
private $index;
/**
* Constructor.
*
* @param array $index Index specification
* @throws InvalidArgumentException
*/
public function __construct(array $index)
{
if ( ! isset($index['key'])) {
throw new InvalidArgumentException('Required "key" document is missing from index specification');
}
if ( ! is_array($index['key']) && ! is_object($index['key'])) {
throw InvalidArgumentException::invalidType('"key" option', $index['key'], 'array or object');
}
foreach ($index['key'] as $fieldName => $order) {
if ( ! is_int($order) && ! is_float($order) && ! is_string($order)) {
throw InvalidArgumentException::invalidType(sprintf('order value for "%s" field within "key" option', $fieldName), $order, 'numeric or string');
}
}
if ( ! isset($index['ns'])) {
throw new InvalidArgumentException('Required "ns" option is missing from index specification');
}
if ( ! is_string($index['ns'])) {
throw InvalidArgumentException::invalidType('"ns" option', $index['ns'], 'string');
}
if ( ! isset($index['name'])) {
$index['name'] = \MongoDB\generate_index_name($index['key']);
}
if ( ! is_string($index['name'])) {
throw InvalidArgumentException::invalidType('"name" option', $index['name'], 'string');
}
$this->index = $index;
}
/**
* Return the index name.
*
* @param string
*/
public function __toString()
{
return $this->index['name'];
}
/**
* Serialize the index information to BSON for index creation.
*
* @see \MongoDB\Collection::createIndexes()
* @see http://php.net/mongodb-bson-serializable.bsonserialize
* @return array
*/
public function bsonSerialize()
{
return $this->index;
}
}