Yii2 mongodb 擴展的where的條件加入大於 小於號



1. mongodb的where中有比較豐富的 條件,如下:

 static $builders = [
'NOT' => 'buildNotCondition',
'AND' => 'buildAndCondition',
'OR' => 'buildOrCondition',
'BETWEEN' => 'buildBetweenCondition',
'NOT BETWEEN' => 'buildBetweenCondition',
'IN' => 'buildInCondition',
'NOT IN' => 'buildInCondition',
'REGEX' => 'buildRegexCondition',
'LIKE' => 'buildLikeCondition',

];

但是沒有大於和小於等,因此我們需要加入大於,大於等於, 小於,小於等於

加入函數部分為:

在vendor/yiisoft/yii2-mongodb/collection.php

加入函數:

public function buildGtCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?gt' => $value]];
}


public function buildGteCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?gte' => $value]];
}


public function buildLtCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?lt' => $value]];
}

public function buildLteCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?lte' => $value]];
}
buildCondition函數里面加入下面的部分代碼
 public function buildCondition($condition)
{
static $builders = [
'NOT' => 'buildNotCondition',
'AND' => 'buildAndCondition',
'OR' => 'buildOrCondition',
'BETWEEN' => 'buildBetweenCondition',
'NOT BETWEEN' => 'buildBetweenCondition',
'IN' => 'buildInCondition',
'NOT IN' => 'buildInCondition',
'REGEX' => 'buildRegexCondition',
'LIKE' => 'buildLikeCondition',
'>' => 'buildGtCondition',
'>='=> 'buildGteCondition',
'<' => 'buildLtCondition',
'<=' => 'buildLteCondition',
];


最后collection.php的代碼如下:

<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/

namespace yii\mongodb;

use yii\base\InvalidParamException;
use yii\base\Object;
use Yii;

/**
* Collection represents the Mongo collection information.
*
* A collection object is usually created by calling [[Database::getCollection()]] or [[Connection::getCollection()]].
*
* Collection provides the basic interface for the Mongo queries, mostly: insert, update, delete operations.
* For example:
*
* ~~~
* $collection = Yii::$app->mongodb->getCollection('customer');
* $collection->insert(['name' => 'John Smith', 'status' => 1]);
* ~~~
*
* To perform "find" queries, please use [[Query]] instead.
*
* Mongo uses JSON format to specify query conditions with quite specific syntax.
* However Collection class provides the ability of "translating" common condition format used "yii\db\*"
* into Mongo condition.
* For example:
* ~~~
* $condition = [
* [
* 'OR',
* ['AND', ['first_name' => 'John'], ['last_name' => 'Smith']],
* ['status' => [1, 2, 3]]
* ],
* ];
* print_r($collection->buildCondition($condition));
* // outputs :
* [
* '$or' => [
* [
* 'first_name' => 'John',
* 'last_name' => 'John',
* ],
* [
* 'status' => ['$in' => [1, 2, 3]],
* ]
* ]
* ]
* ~~~
*
* Note: condition values for the key '_id' will be automatically cast to [[\MongoId]] instance,
* even if they are plain strings. However, if you have other columns, containing [[\MongoId]], you
* should take care of possible typecast on your own.
*
* @property string $fullName Full name of this collection, including database name. This property is
* read-only.
* @property array $lastError Last error information. This property is read-only.
* @property string $name Name of this collection. This property is read-only.
*
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0
*/
class Collection extends Object
{
/**
* @var \MongoCollection Mongo collection instance.
*/
public $mongoCollection;


/**
* @return string name of this collection.
*/
public function getName()
{
return $this->mongoCollection->getName();
}

/**
* @return string full name of this collection, including database name.
*/
public function getFullName()
{
return $this->mongoCollection->__toString();
}

/**
* @return array last error information.
*/
public function getLastError()
{
return $this->mongoCollection->db->lastError();
}

/**
* Composes log/profile token.
* @param string $command command name
* @param array $arguments command arguments.
* @return string token.
*/
protected function composeLogToken($command, $arguments = [])
{
$parts = [];
foreach ($arguments as $argument) {
$parts[] = is_scalar($argument) ? $argument : $this->encodeLogData($argument);
}

return $this->getFullName() . '.' . $command . '(' . implode(', ', $parts) . ')';
}

/**
* Encodes complex log data into JSON format string.
* @param mixed $data raw data.
* @return string encoded data string.
*/
protected function encodeLogData($data)
{
return json_encode($this->processLogData($data));
}

/**
* Pre-processes the log data before sending it to `json_encode()`.
* @param mixed $data raw data.
* @return mixed the processed data.
*/
protected function processLogData($data)
{
if (is_object($data)) {
if ($data instanceof \MongoId ||
$data instanceof \MongoRegex ||
$data instanceof \MongoDate ||
$data instanceof \MongoInt32 ||
$data instanceof \MongoInt64 ||
$data instanceof \MongoTimestamp
) {
$data = get_class($data) . '(' . $data->__toString() . ')';
} elseif ($data instanceof \MongoCode) {
$data = 'MongoCode( ' . $data->__toString() . ' )';
} elseif ($data instanceof \MongoBinData) {
$data = 'MongoBinData(...)';
} elseif ($data instanceof \MongoDBRef) {
$data = 'MongoDBRef(...)';
} elseif ($data instanceof \MongoMinKey || $data instanceof \MongoMaxKey) {
$data = get_class($data);
} else {
$result = [];
foreach ($data as $name => $value) {
$result[$name] = $value;
}
$data = $result;
}

if ($data === []) {
return new \stdClass();
}
}

if (is_array($data)) {
foreach ($data as $key => $value) {
if (is_array($value) || is_object($value)) {
$data[$key] = $this->processLogData($value);
}
}
}

return $data;
}

/**
* Drops this collection.
* @throws Exception on failure.
* @return boolean whether the operation successful.
*/
public function drop()
{
$token = $this->composeLogToken('drop');
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = $this->mongoCollection->drop();
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);

return true;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Creates an index on the collection and the specified fields.
* @param array|string $columns column name or list of column names.
* If array is given, each element in the array has as key the field name, and as
* value either 1 for ascending sort, or -1 for descending sort.
* You can specify field using native numeric key with the field name as a value,
* in this case ascending sort will be used.
* For example:
* ~~~
* [
* 'name',
* 'status' => -1,
* ]
* ~~~
* @param array $options list of options in format: optionName => optionValue.
* @throws Exception on failure.
* @return boolean whether the operation successful.
*/
public function createIndex($columns, $options = [])
{
$columns = (array)$columns;
$keys = $this->normalizeIndexKeys($columns);
$token = $this->composeLogToken('createIndex', [$keys, $options]);
$options = array_merge(['w' => 1], $options);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
if (method_exists($this->mongoCollection, 'createIndex')) {
$result = $this->mongoCollection->createIndex($keys, $options);
} else {
$result = $this->mongoCollection->ensureIndex($keys, $options);
}
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);

return true;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Drop indexes for specified column(s).
* @param string|array $columns column name or list of column names.
* If array is given, each element in the array has as key the field name, and as
* value either 1 for ascending sort, or -1 for descending sort.
* Use value 'text' to specify text index.
* You can specify field using native numeric key with the field name as a value,
* in this case ascending sort will be used.
* For example:
* ~~~
* [
* 'name',
* 'status' => -1,
* 'description' => 'text',
* ]
* ~~~
* @throws Exception on failure.
* @return boolean whether the operation successful.
*/
public function dropIndex($columns)
{
$columns = (array)$columns;
$keys = $this->normalizeIndexKeys($columns);
$token = $this->composeLogToken('dropIndex', [$keys]);
Yii::info($token, __METHOD__);
try {
$result = $this->mongoCollection->deleteIndex($keys);
$this->tryResultError($result);

return true;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Compose index keys from given columns/keys list.
* @param array $columns raw columns/keys list.
* @return array normalizes index keys array.
*/
protected function normalizeIndexKeys($columns)
{
$keys = [];
foreach ($columns as $key => $value) {
if (is_numeric($key)) {
$keys[$value] = \MongoCollection::ASCENDING;
} else {
$keys[$key] = $value;
}
}

return $keys;
}

/**
* Drops all indexes for this collection.
* @throws Exception on failure.
* @return integer count of dropped indexes.
*/
public function dropAllIndexes()
{
$token = $this->composeLogToken('dropIndexes');
Yii::info($token, __METHOD__);
try {
$result = $this->mongoCollection->deleteIndexes();
$this->tryResultError($result);

return $result['nIndexesWas'];
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Returns a cursor for the search results.
* In order to perform "find" queries use [[Query]] class.
* @param array $condition query condition
* @param array $fields fields to be selected
* @return \MongoCursor cursor for the search results
* @see Query
*/
public function find($condition = [], $fields = [])
{
return $this->mongoCollection->find($this->buildCondition($condition), $fields);
}

/**
* Returns a single document.
* @param array $condition query condition
* @param array $fields fields to be selected
* @return array|null the single document. Null is returned if the query results in nothing.
* @see http://www.php.net/manual/en/mongocollection.findone.php
*/
public function findOne($condition = [], $fields = [])
{
return $this->mongoCollection->findOne($this->buildCondition($condition), $fields);
}

/**
* Updates a document and returns it.
* @param array $condition query condition
* @param array $update update criteria
* @param array $fields fields to be returned
* @param array $options list of options in format: optionName => optionValue.
* @return array|null the original document, or the modified document when $options['new'] is set.
* @throws Exception on failure.
* @see http://www.php.net/manual/en/mongocollection.findandmodify.php
*/
public function findAndModify($condition, $update, $fields = [], $options = [])
{
$condition = $this->buildCondition($condition);
$token = $this->composeLogToken('findAndModify', [$condition, $update, $fields, $options]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = $this->mongoCollection->findAndModify($condition, $update, $fields, $options);
Yii::endProfile($token, __METHOD__);

return $result;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Inserts new data into collection.
* @param array|object $data data to be inserted.
* @param array $options list of options in format: optionName => optionValue.
* @return \MongoId new record id instance.
* @throws Exception on failure.
*/
public function insert($data, $options = [])
{
$token = $this->composeLogToken('insert', [$data]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$options = array_merge(['w' => 1], $options);
$this->tryResultError($this->mongoCollection->insert($data, $options));
Yii::endProfile($token, __METHOD__);

return is_array($data) ? $data['_id'] : $data->_id;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Inserts several new rows into collection.
* @param array $rows array of arrays or objects to be inserted.
* @param array $options list of options in format: optionName => optionValue.
* @return array inserted data, each row will have "_id" key assigned to it.
* @throws Exception on failure.
*/
public function batchInsert($rows, $options = [])
{
$token = $this->composeLogToken('batchInsert', [$rows]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$options = array_merge(['w' => 1], $options);
$this->tryResultError($this->mongoCollection->batchInsert($rows, $options));
Yii::endProfile($token, __METHOD__);

return $rows;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Updates the rows, which matches given criteria by given data.
* Note: for "multiple" mode Mongo requires explicit strategy "$set" or "$inc"
* to be specified for the "newData". If no strategy is passed "$set" will be used.
* @param array $condition description of the objects to update.
* @param array $newData the object with which to update the matching records.
* @param array $options list of options in format: optionName => optionValue.
* @return integer|boolean number of updated documents or whether operation was successful.
* @throws Exception on failure.
*/
public function update($condition, $newData, $options = [])
{
$condition = $this->buildCondition($condition);
$options = array_merge(['w' => 1, 'multiple' => true], $options);
if ($options['multiple']) {
$keys = array_keys($newData);
if (!empty($keys) && strncmp('$', $keys[0], 1) !== 0) {
$newData = ['$set' => $newData];
}
}
$token = $this->composeLogToken('update', [$condition, $newData, $options]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = $this->mongoCollection->update($condition, $newData, $options);
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);
if (is_array($result) && array_key_exists('n', $result)) {
return $result['n'];
} else {
return true;
}
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Update the existing database data, otherwise insert this data
* @param array|object $data data to be updated/inserted.
* @param array $options list of options in format: optionName => optionValue.
* @return \MongoId updated/new record id instance.
* @throws Exception on failure.
*/
public function save($data, $options = [])
{
$token = $this->composeLogToken('save', [$data]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$options = array_merge(['w' => 1], $options);
$this->tryResultError($this->mongoCollection->save($data, $options));
Yii::endProfile($token, __METHOD__);

return is_array($data) ? $data['_id'] : $data->_id;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Removes data from the collection.
* @param array $condition description of records to remove.
* @param array $options list of options in format: optionName => optionValue.
* @return integer|boolean number of updated documents or whether operation was successful.
* @throws Exception on failure.
* @see http://www.php.net/manual/en/mongocollection.remove.php
*/
public function remove($condition = [], $options = [])
{
$condition = $this->buildCondition($condition);
$options = array_merge(['w' => 1, 'justOne' => false], $options);
$token = $this->composeLogToken('remove', [$condition, $options]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = $this->mongoCollection->remove($condition, $options);
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);
if (is_array($result) && array_key_exists('n', $result)) {
return $result['n'];
} else {
return true;
}
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Returns a list of distinct values for the given column across a collection.
* @param string $column column to use.
* @param array $condition query parameters.
* @return array|boolean array of distinct values, or "false" on failure.
* @throws Exception on failure.
*/
public function distinct($column, $condition = [])
{
$condition = $this->buildCondition($condition);
$token = $this->composeLogToken('distinct', [$column, $condition]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = $this->mongoCollection->distinct($column, $condition);
Yii::endProfile($token, __METHOD__);

return $result;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Performs aggregation using Mongo Aggregation Framework.
* @param array $pipeline list of pipeline operators, or just the first operator
* @param array $pipelineOperator additional pipeline operator. You can specify additional
* pipelines via third argument, fourth argument etc.
* @return array the result of the aggregation.
* @throws Exception on failure.
* @see http://docs.mongodb.org/manual/applications/aggregation/
*/
public function aggregate($pipeline, $pipelineOperator = [])
{
$args = func_get_args();
$token = $this->composeLogToken('aggregate', $args);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = call_user_func_array([$this->mongoCollection, 'aggregate'], $args);
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);

return $result['result'];
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Performs aggregation using Mongo "group" command.
* @param mixed $keys fields to group by. If an array or non-code object is passed,
* it will be the key used to group results. If instance of [[\MongoCode]] passed,
* it will be treated as a function that returns the key to group by.
* @param array $initial Initial value of the aggregation counter object.
* @param \MongoCode|string $reduce function that takes two arguments (the current
* document and the aggregation to this point) and does the aggregation.
* Argument will be automatically cast to [[\MongoCode]].
* @param array $options optional parameters to the group command. Valid options include:
* - condition - criteria for including a document in the aggregation.
* - finalize - function called once per unique key that takes the final output of the reduce function.
* @return array the result of the aggregation.
* @throws Exception on failure.
* @see http://docs.mongodb.org/manual/reference/command/group/
*/
public function group($keys, $initial, $reduce, $options = [])
{
if (!($reduce instanceof \MongoCode)) {
$reduce = new \MongoCode((string) $reduce);
}
if (array_key_exists('condition', $options)) {
$options['condition'] = $this->buildCondition($options['condition']);
}
if (array_key_exists('finalize', $options)) {
if (!($options['finalize'] instanceof \MongoCode)) {
$options['finalize'] = new \MongoCode((string) $options['finalize']);
}
}
$token = $this->composeLogToken('group', [$keys, $initial, $reduce, $options]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
// Avoid possible E_DEPRECATED for $options:
if (empty($options)) {
$result = $this->mongoCollection->group($keys, $initial, $reduce);
} else {
$result = $this->mongoCollection->group($keys, $initial, $reduce, $options);
}
$this->tryResultError($result);

Yii::endProfile($token, __METHOD__);
if (array_key_exists('retval', $result)) {
return $result['retval'];
} else {
return [];
}
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Performs aggregation using Mongo "map reduce" mechanism.
* Note: this function will not return the aggregation result, instead it will
* write it inside the another Mongo collection specified by "out" parameter.
* For example:
*
* ~~~
* $customerCollection = Yii::$app->mongo->getCollection('customer');
* $resultCollectionName = $customerCollection->mapReduce(
* 'function () {emit(this.status, this.amount)}',
* 'function (key, values) {return Array.sum(values)}',
* 'mapReduceOut',
* ['status' => 3]
* );
* $query = new Query();
* $results = $query->from($resultCollectionName)->all();
* ~~~
*
* @param \MongoCode|string $map function, which emits map data from collection.
* Argument will be automatically cast to [[\MongoCode]].
* @param \MongoCode|string $reduce function that takes two arguments (the map key
* and the map values) and does the aggregation.
* Argument will be automatically cast to [[\MongoCode]].
* @param string|array $out output collection name. It could be a string for simple output
* ('outputCollection'), or an array for parametrized output (['merge' => 'outputCollection']).
* You can pass ['inline' => true] to fetch the result at once without temporary collection usage.
* @param array $condition criteria for including a document in the aggregation.
* @param array $options additional optional parameters to the mapReduce command. Valid options include:
* - sort - array - key to sort the input documents. The sort key must be in an existing index for this collection.
* - limit - the maximum number of documents to return in the collection.
* - finalize - function, which follows the reduce method and modifies the output.
* - scope - array - specifies global variables that are accessible in the map, reduce and finalize functions.
* - jsMode - boolean -Specifies whether to convert intermediate data into BSON format between the execution of the map and reduce functions.
* - verbose - boolean - specifies whether to include the timing information in the result information.
* @return string|array the map reduce output collection name or output results.
* @throws Exception on failure.
*/
public function mapReduce($map, $reduce, $out, $condition = [], $options = [])
{
if (!($map instanceof \MongoCode)) {
$map = new \MongoCode((string) $map);
}
if (!($reduce instanceof \MongoCode)) {
$reduce = new \MongoCode((string) $reduce);
}
$command = [
'mapReduce' => $this->getName(),
'map' => $map,
'reduce' => $reduce,
'out' => $out
];
if (!empty($condition)) {
$command['query'] = $this->buildCondition($condition);
}
if (array_key_exists('finalize', $options)) {
if (!($options['finalize'] instanceof \MongoCode)) {
$options['finalize'] = new \MongoCode((string) $options['finalize']);
}
}
if (!empty($options)) {
$command = array_merge($command, $options);
}
$token = $this->composeLogToken('mapReduce', [$map, $reduce, $out]);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$command = array_merge(['mapReduce' => $this->getName()], $command);
$result = $this->mongoCollection->db->command($command);
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);

return array_key_exists('results', $result) ? $result['results'] : $result['result'];
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Performs full text search.
* @param string $search string of terms that MongoDB parses and uses to query the text index.
* @param array $condition criteria for filtering a results list.
* @param array $fields list of fields to be returned in result.
* @param array $options additional optional parameters to the mapReduce command. Valid options include:
* - limit - the maximum number of documents to include in the response (by default 100).
* - language - the language that determines the list of stop words for the search
* and the rules for the stemmer and tokenizer. If not specified, the search uses the default
* language of the index.
* @return array the highest scoring documents, in descending order by score.
* @throws Exception on failure.
*/
public function fullTextSearch($search, $condition = [], $fields = [], $options = [])
{
$command = [
'search' => $search
];
if (!empty($condition)) {
$command['filter'] = $this->buildCondition($condition);
}
if (!empty($fields)) {
$command['project'] = $fields;
}
if (!empty($options)) {
$command = array_merge($command, $options);
}
$token = $this->composeLogToken('text', $command);
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$command = array_merge(['text' => $this->getName()], $command);
$result = $this->mongoCollection->db->command($command);
$this->tryResultError($result);
Yii::endProfile($token, __METHOD__);

return $result['results'];
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}

/**
* Checks if command execution result ended with an error.
* @param mixed $result raw command execution result.
* @throws Exception if an error occurred.
*/
protected function tryResultError($result)
{
if (is_array($result)) {
if (!empty($result['errmsg'])) {
$errorMessage = $result['errmsg'];
} elseif (!empty($result['err'])) {
$errorMessage = $result['err'];
}
if (isset($errorMessage)) {
if (array_key_exists('code', $result)) {
$errorCode = (int) $result['code'];
} elseif (array_key_exists('ok', $result)) {
$errorCode = (int) $result['ok'];
} else {
$errorCode = 0;
}
throw new Exception($errorMessage, $errorCode);
}
} elseif (!$result) {
throw new Exception('Unknown error, use "w=1" option to enable error tracking');
}
}

/**
* Throws an exception if there was an error on the last operation.
* @throws Exception if an error occurred.
*/
protected function tryLastError()
{
$this->tryResultError($this->getLastError());
}

/**
* Converts "\yii\db\*" quick condition keyword into actual Mongo condition keyword.
* @param string $key raw condition key.
* @return string actual key.
*/
protected function normalizeConditionKeyword($key)
{
static $map = [
'AND' => '$and',
'OR' => '$or',
'IN' => '$in',
'NOT IN' => '$nin',
];
$matchKey = strtoupper($key);
if (array_key_exists($matchKey, $map)) {
return $map[$matchKey];
} else {
return $key;
}
}

/**
* Converts given value into [[MongoId]] instance.
* If array given, each element of it will be processed.
* @param mixed $rawId raw id(s).
* @return array|\MongoId normalized id(s).
*/
protected function ensureMongoId($rawId)
{
if (is_array($rawId)) {
$result = [];
foreach ($rawId as $key => $value) {
$result[$key] = $this->ensureMongoId($value);
}

return $result;
} elseif (is_object($rawId)) {
if ($rawId instanceof \MongoId) {
return $rawId;
} else {
$rawId = (string) $rawId;
}
}
try {
$mongoId = new \MongoId($rawId);
} catch (\MongoException $e) {
// invalid id format
$mongoId = $rawId;
}

return $mongoId;
}


public function buildGtCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?gt' => $value]];
}


public function buildGteCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?gte' => $value]];
}


public function buildLtCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?lt' => $value]];
}

public function buildLteCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
return [$column => ['?lte' => $value]];
}

/**
* Parses the condition specification and generates the corresponding Mongo condition.
* @param array $condition the condition specification. Please refer to [[Query::where()]]
* on how to specify a condition.
* @return array the generated Mongo condition
* @throws InvalidParamException if the condition is in bad format
*/
public function buildCondition($condition)
{
static $builders = [
'NOT' => 'buildNotCondition',
'AND' => 'buildAndCondition',
'OR' => 'buildOrCondition',
'BETWEEN' => 'buildBetweenCondition',
'NOT BETWEEN' => 'buildBetweenCondition',
'IN' => 'buildInCondition',
'NOT IN' => 'buildInCondition',
'REGEX' => 'buildRegexCondition',
'LIKE' => 'buildLikeCondition',
'>' => 'buildGtCondition',
'>='=> 'buildGteCondition',
'<' => 'buildLtCondition',
'<=' => 'buildLteCondition',
];

if (!is_array($condition)) {
throw new InvalidParamException('Condition should be an array.');
} elseif (empty($condition)) {
return [];
}
if (isset($condition[0])) { // operator format: operator, operand 1, operand 2, ...
$operator = strtoupper($condition[0]);
if (isset($builders[$operator])) {
$method = $builders[$operator];
array_shift($condition);

return $this->$method($operator, $condition);
} else {
throw new InvalidParamException('Found unknown operator in query: ' . $operator);
}
} else {
// hash format: 'column1' => 'value1', 'column2' => 'value2', ...
return $this->buildHashCondition($condition);
}
}

/**
* Creates a condition based on column-value pairs.
* @param array $condition the condition specification.
* @return array the generated Mongo condition.
*/
public function buildHashCondition($condition)
{
$result = [];
foreach ($condition as $name => $value) {
if (strncmp('$', $name, 1) === 0) {
// Native Mongo condition:
$result[$name] = $value;
} else {
if (is_array($value)) {
if (array_key_exists(0, $value)) {
// Quick IN condition:
$result = array_merge($result, $this->buildInCondition('IN', [$name, $value]));
} else {
// Mongo complex condition:
$result[$name] = $value;
}
} else {
// Direct match:
if ($name == '_id') {
$value = $this->ensureMongoId($value);
}
$result[$name] = $value;
}
}
}

return $result;
}

/**
* Composes `NOT` condition.
* @param string $operator the operator to use for connecting the given operands
* @param array $operands the Mongo conditions to connect.
* @return array the generated Mongo condition.
* @throws InvalidParamException if wrong number of operands have been given.
*/
public function buildNotCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}

list($name, $value) = $operands;

$result = [];
if (is_array($value)) {
$result[$name] = ['$not' => $this->buildCondition($value)];
} else {
if ($name == '_id') {
$value = $this->ensureMongoId($value);
}
$result[$name] = ['$ne' => $value];
}

return $result;
}

/**
* Connects two or more conditions with the `AND` operator.
* @param string $operator the operator to use for connecting the given operands
* @param array $operands the Mongo conditions to connect.
* @return array the generated Mongo condition.
*/
public function buildAndCondition($operator, $operands)
{
$operator = $this->normalizeConditionKeyword($operator);
$parts = [];
foreach ($operands as $operand) {
$parts[] = $this->buildCondition($operand);
}

return [$operator => $parts];
}

/**
* Connects two or more conditions with the `OR` operator.
* @param string $operator the operator to use for connecting the given operands
* @param array $operands the Mongo conditions to connect.
* @return array the generated Mongo condition.
*/
public function buildOrCondition($operator, $operands)
{
$operator = $this->normalizeConditionKeyword($operator);
$parts = [];
foreach ($operands as $operand) {
$parts[] = $this->buildCondition($operand);
}

return [$operator => $parts];
}

/**
* Creates an Mongo condition, which emulates the `BETWEEN` operator.
* @param string $operator the operator to use
* @param array $operands the first operand is the column name. The second and third operands
* describe the interval that column value should be in.
* @return array the generated Mongo condition.
* @throws InvalidParamException if wrong number of operands have been given.
*/
public function buildBetweenCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1], $operands[2])) {
throw new InvalidParamException("Operator '$operator' requires three operands.");
}
list($column, $value1, $value2) = $operands;
if (strncmp('NOT', $operator, 3) === 0) {
return [
$column => [
'$lt' => $value1,
'$gt' => $value2,
]
];
} else {
return [
$column => [
'$gte' => $value1,
'$lte' => $value2,
]
];
}
}

/**
* Creates an Mongo condition with the `IN` operator.
* @param string $operator the operator to use (e.g. `IN` or `NOT IN`)
* @param array $operands the first operand is the column name. If it is an array
* a composite IN condition will be generated.
* The second operand is an array of values that column value should be among.
* @return array the generated Mongo condition.
* @throws InvalidParamException if wrong number of operands have been given.
*/
public function buildInCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}

list($column, $values) = $operands;

$values = (array) $values;

if (!is_array($column)) {
$columns = [$column];
$values = [$column => $values];
} elseif (count($column) < 2) {
$columns = $column;
$values = [$column[0] => $values];
} else {
$columns = $column;
}

$operator = $this->normalizeConditionKeyword($operator);
$result = [];
foreach ($columns as $column) {
if ($column == '_id') {
$inValues = $this->ensureMongoId($values[$column]);
} else {
$inValues = $values[$column];
}
$result[$column][$operator] = array_values($inValues);
}

return $result;
}

/**
* Creates a Mongo regular expression condition.
* @param string $operator the operator to use
* @param array $operands the first operand is the column name.
* The second operand is a single value that column value should be compared with.
* @return array the generated Mongo condition.
* @throws InvalidParamException if wrong number of operands have been given.
*/
public function buildRegexCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
if (!($value instanceof \MongoRegex)) {
$value = new \MongoRegex($value);
}

return [$column => $value];
}

/**
* Creates a Mongo condition, which emulates the `LIKE` operator.
* @param string $operator the operator to use
* @param array $operands the first operand is the column name.
* The second operand is a single value that column value should be compared with.
* @return array the generated Mongo condition.
* @throws InvalidParamException if wrong number of operands have been given.
*/
public function buildLikeCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1])) {
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $value) = $operands;
if (!($value instanceof \MongoRegex)) {
$value = new \MongoRegex('/' . preg_quote($value) . '/i');
}

return [$column => $value];
}
}





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