don't add non-record schema to cache (#18)

* don't add non-record schema to cache

* remove obsolete func argument

Author: nick-zh

src/Merger/SchemaMerger.php

@@ -108,15 +108,13 @@ private function replaceSchemaIdWithDefinition(
     /**
      * @param bool $prefixWithNamespace
      * @param bool $useTemplateName
-     * @param bool $optimizeFullNames
      * @return integer
      * @throws AvroSchemaParseException
      * @throws SchemaMergerException
      */
     public function merge(
         bool $prefixWithNamespace = false,
-        bool $useTemplateName = false,
-        bool $optimizeFullNames = false
+        bool $useTemplateName = false
     ): int {
         $mergedFiles = 0;
         $registry = $this->getSchemaRegistry();

src/Registry/SchemaRegistry.php

@@ -148,7 +148,10 @@ private function registerSchemaFile(\SplFileInfo $fileInfo): void
 
         $schemaId = $this->getSchemaId($schemaData, $template);
         $this->schemas[$schemaId] = $template->withSchemaId($schemaId);
-        $this->schemaNamesPerNamespace[$namespace][] = $schemaData['name'];
+
+        if (true === isset($schemaData['name'])) {
+            $this->schemaNamesPerNamespace[$namespace][] = $schemaData['name'];
+        }
     }
 
     /**