PHPLIB-122: Checking "ok" field in command results is redundant

The driver (via libmongoc) already does this.

src/Operation/Aggregate.php

@@ -7,7 +7,6 @@ use MongoDB\Driver\ReadPreference;
 use MongoDB\Driver\Server;
 use MongoDB\Exception\InvalidArgumentException;
 use MongoDB\Exception\InvalidArgumentTypeException;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedValueException;
 use ArrayIterator;
 use stdClass;
@@ -136,10 +135,6 @@ class Aggregate implements Executable
 
         $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
         if ( ! isset($result->result) || ! is_array($result->result)) {
             throw new UnexpectedValueException('aggregate command did not return a "result" array');
         }

src/Operation/Count.php

@@ -7,7 +7,6 @@ use MongoDB\Driver\ReadPreference;
 use MongoDB\Driver\Server;
 use MongoDB\Exception\InvalidArgumentException;
 use MongoDB\Exception\InvalidArgumentTypeException;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedValueException;
 
 /**
@@ -100,10 +99,6 @@ class Count implements Executable
         $cursor = $server->executeCommand($this->databaseName, $this->createCommand(), $readPreference);
         $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
         // Older server versions may return a float
         if ( ! isset($result->n) || ! (is_integer($result->n) || is_float($result->n))) {
             throw new UnexpectedValueException('count command did not return a numeric "n" value');

src/Operation/CreateCollection.php

@@ -5,7 +5,6 @@ namespace MongoDB\Operation;
 use MongoDB\Driver\Command;
 use MongoDB\Driver\Server;
 use MongoDB\Exception\InvalidArgumentException;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedTypeException;
 use MongoDB\Model\IndexInput;
 
@@ -102,13 +101,8 @@ class CreateCollection implements Executable
     public function execute(Server $server)
     {
         $cursor = $server->executeCommand($this->databaseName, $this->createCommand());
-        $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
-        return $result;
+        return current($cursor->toArray());
     }
 
     /**

src/Operation/CreateIndexes.php

@@ -7,7 +7,6 @@ use MongoDB\Driver\Server;
 use MongoDB\Driver\BulkWrite as Bulk;
 use MongoDB\Driver\WriteConcern;
 use MongoDB\Exception\InvalidArgumentException;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedTypeException;
 use MongoDB\Model\IndexInput;
 
@@ -92,11 +91,8 @@ class CreateIndexes implements Executable
         ]);
 
         $cursor = $server->executeCommand($this->databaseName, $command);
-        $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
+        return current($cursor->toArray());
     }
 
     /**

src/Operation/Distinct.php

@@ -7,7 +7,6 @@ use MongoDB\Driver\ReadPreference;
 use MongoDB\Driver\Server;
 use MongoDB\Exception\InvalidArgumentException;
 use MongoDB\Exception\InvalidArgumentTypeException;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedValueException;
 
 /**
@@ -77,10 +76,6 @@ class Distinct implements Executable
         $cursor = $server->executeCommand($this->databaseName, $this->createCommand(), $readPreference);
         $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
         if ( ! isset($result->values) || ! is_array($result->values)) {
             throw new UnexpectedValueException('distinct command did not return a "values" array');
         }

src/Operation/DropCollection.php

@@ -4,8 +4,7 @@ namespace MongoDB\Operation;
 
 use MongoDB\Driver\Command;
 use MongoDB\Driver\Server;
-use MongoDB\Driver\Exception\RuntimeException as DriverRuntimeException;
-use MongoDB\Exception\RuntimeException;
+use MongoDB\Driver\Exception\RuntimeException;
 
 /**
  * Operation for the drop command.
@@ -44,7 +43,7 @@ class DropCollection implements Executable
     {
         try {
             $cursor = $server->executeCommand($this->databaseName, new Command(['drop' => $this->collectionName]));
-        } catch (DriverRuntimeException $e) {
+        } catch (RuntimeException $e) {
             /* The server may return an error if the collection does not exist.
              * Check for an error message (unfortunately, there isn't a code)
              * and NOP instead of throwing.
@@ -56,12 +55,6 @@ class DropCollection implements Executable
             throw $e;
         }
 
-        $result = current($cursor->toArray());
-
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
-        return $result;
+        return current($cursor->toArray());
     }
 }

src/Operation/DropDatabase.php

@@ -4,7 +4,6 @@ namespace MongoDB\Operation;
 
 use MongoDB\Driver\Command;
 use MongoDB\Driver\Server;
-use MongoDB\Exception\RuntimeException;
 
 /**
  * Operation for the dropDatabase command.
@@ -39,12 +38,7 @@ class DropDatabase implements Executable
     public function execute(Server $server)
     {
         $cursor = $server->executeCommand($this->databaseName, new Command(['dropDatabase' => 1]));
-        $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
-        return $result;
+        return current($cursor->toArray());
     }
 }

src/Operation/DropIndexes.php

@@ -5,7 +5,6 @@ namespace MongoDB\Operation;
 use MongoDB\Driver\Command;
 use MongoDB\Driver\Server;
 use MongoDB\Exception\InvalidArgumentException;
-use MongoDB\Exception\RuntimeException;
 
 /**
  * Operation for the dropIndexes command.
@@ -56,12 +55,7 @@ class DropIndexes implements Executable
         ];
 
         $cursor = $server->executeCommand($this->databaseName, new Command($cmd));
-        $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
-        return $result;
+        return current($cursor->toArray());
     }
 }

src/Operation/FindAndModify.php

@@ -6,7 +6,6 @@ use MongoDB\Driver\Command;
 use MongoDB\Driver\Server;
 use MongoDB\Exception\InvalidArgumentException;
 use MongoDB\Exception\InvalidArgumentTypeException;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedValueException;
 
 /**
@@ -120,10 +119,6 @@ class FindAndModify implements Executable
         $cursor = $server->executeCommand($this->databaseName, $this->createCommand());
         $result = current($cursor->toArray());
 
-        if (empty($result->ok)) {
-            throw new RuntimeException(isset($result->errmsg) ? $result->errmsg : 'Unknown error');
-        }
-
         if ( ! isset($result->value)) {
             return null;
         }

src/Operation/ListDatabases.php

@@ -4,7 +4,6 @@ namespace MongoDB\Operation;
 
 use MongoDB\Driver\Command;
 use MongoDB\Driver\Server;
-use MongoDB\Exception\RuntimeException;
 use MongoDB\Exception\UnexpectedValueException;
 use MongoDB\Model\DatabaseInfoIterator;
 use MongoDB\Model\DatabaseInfoLegacyIterator;
@@ -58,10 +57,6 @@ class ListDatabases implements Executable
         $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
         $result = current($cursor->toArray());
 
-        if (empty($result['ok'])) {
-            throw new RuntimeException(isset($result['errmsg']) ? $result['errmsg'] : 'Unknown error');
-        }
-
         if ( ! isset($result['databases']) || ! is_array($result['databases'])) {
             throw new UnexpectedValueException('listDatabases command did not return a "databases" array');
         }