ACP2E-1709: error during declarative schema whitelsit generation

Author: pradeep1819

app/code/Magento/Developer/Model/Setup/Declaration/Schema/WhitelistGenerator.php

@@ -185,6 +185,7 @@ private function getElementsWithFixedName(array $tableData): array
      * @param array $tableData
      * @return array
      * @SuppressWarnings(PHPMD.CyclomaticComplexity)
+     * @SuppressWarnings(PHPMD.NPathComplexity)
      */
     private function getElementsWithAutogeneratedName(Schema $schema, string $tableName, array $tableData) : array
     {
@@ -194,7 +195,7 @@ private function getElementsWithAutogeneratedName(Schema $schema, string $tableN
         $elementType = 'index';
         if (!empty($tableData[$elementType])) {
             foreach ($tableData[$elementType] as $tableElementData) {
-                if ($table->getIndexByName($tableElementData['referenceId'])) {
+                if (isset($tableElementData['column'])) {
                     $indexName = $this->elementNameResolver->getFullIndexName(
                         $table,
                         $tableElementData['column'],
@@ -209,24 +210,32 @@ private function getElementsWithAutogeneratedName(Schema $schema, string $tableN
         if (!empty($tableData[$elementType])) {
             foreach ($tableData[$elementType] as $tableElementData) {
                 $constraintName = null;
-                if ($tableElementData['type'] === 'foreign' && $table->getConstraintByName($tableElementData['referenceId'])) {
-                    $referenceTable = $schema->getTableByName($tableElementData['referenceTable']);
-                    $column = $table->getColumnByName($tableElementData['column']);
-                    $referenceColumn = $referenceTable->getColumnByName($tableElementData['referenceColumn']);
-                    $constraintName = ($column !== false && $referenceColumn !== false) ?
-                        $this->elementNameResolver->getFullFKName(
-                            $table,
-                            $column,
-                            $referenceTable,
-                            $referenceColumn
-                        ) : null;
-                } else {
-                    if ($table->getIndexByName($tableElementData['referenceId'])) {
-                        $constraintName = $this->elementNameResolver->getFullIndexName(
-                            $table,
-                            $tableElementData['column'],
-                            $tableElementData['type']
-                        );
+                if (isset($tableElementData['type'], $tableElementData['column'])) {
+                    if ($tableElementData['type'] === 'foreign') {
+                        if (isset(
+                                $tableElementData['column'],
+                                $tableElementData['referenceTable'],
+                                $tableElementData['referenceColumn']
+                            )) {
+                            $referenceTable = $schema->getTableByName($tableElementData['referenceTable']);
+                            $column = $table->getColumnByName($tableElementData['column']);
+                            $referenceColumn = $referenceTable->getColumnByName($tableElementData['referenceColumn']);
+                            $constraintName = ($column !== false && $referenceColumn !== false) ?
+                                $this->elementNameResolver->getFullFKName(
+                                    $table,
+                                    $column,
+                                    $referenceTable,
+                                    $referenceColumn
+                                ) : null;
+                        }
+                    } else {
+                        if (isset($tableElementData['column'])) {
+                            $constraintName = $this->elementNameResolver->getFullIndexName(
+                                $table,
+                                $tableElementData['column'],
+                                $tableElementData['type']
+                            );
+                        }
                     }
                 }
                 if ($constraintName) {