Add strict comparison null !== instead of ! (#1794)

Author: jderusse

CHANGELOG.md

@@ -6,6 +6,10 @@
 
 - AWS api-change: Removing FEDERATED from Create/List/Delete/GetDataCatalog API
 
+### Changed
+
+- use strict comparison `null !==` instead of `!`
+
 ## 2.3.0
 
 ### Added

src/Result/GetQueryResultsOutput.php

@@ -59,7 +59,7 @@ public function getIterator(): \Traversable
         $page = $this;
         while (true) {
             $page->initialize();
-            if ($page->nextToken) {
+            if (null !== $page->nextToken) {
                 $input->setNextToken($page->nextToken);
 
                 $this->registerPrefetch($nextPage = $client->getQueryResults($input));

src/Result/ListDatabasesOutput.php

@@ -54,7 +54,7 @@ public function getDatabaseList(bool $currentPageOnly = false): iterable
         $page = $this;
         while (true) {
             $page->initialize();
-            if ($page->nextToken) {
+            if (null !== $page->nextToken) {
                 $input->setNextToken($page->nextToken);
 
                 $this->registerPrefetch($nextPage = $client->listDatabases($input));

src/Result/ListNamedQueriesOutput.php

@@ -64,7 +64,7 @@ public function getNamedQueryIds(bool $currentPageOnly = false): iterable
         $page = $this;
         while (true) {
             $page->initialize();
-            if ($page->nextToken) {
+            if (null !== $page->nextToken) {
                 $input->setNextToken($page->nextToken);
 
                 $this->registerPrefetch($nextPage = $client->listNamedQueries($input));

src/Result/ListQueryExecutionsOutput.php

@@ -69,7 +69,7 @@ public function getQueryExecutionIds(bool $currentPageOnly = false): iterable
         $page = $this;
         while (true) {
             $page->initialize();
-            if ($page->nextToken) {
+            if (null !== $page->nextToken) {
                 $input->setNextToken($page->nextToken);
 
                 $this->registerPrefetch($nextPage = $client->listQueryExecutions($input));

src/Result/ListTableMetadataOutput.php

@@ -72,7 +72,7 @@ public function getTableMetadataList(bool $currentPageOnly = false): iterable
         $page = $this;
         while (true) {
             $page->initialize();
-            if ($page->nextToken) {
+            if (null !== $page->nextToken) {
                 $input->setNextToken($page->nextToken);
 
                 $this->registerPrefetch($nextPage = $client->listTableMetadata($input));