Remove cache and updated testcase

Author: gs-snagaraj

aiservices/openai/src/main/java/com/microsoft/semantickernel/aiservices/openai/chatcompletion/OpenAIFunction.java

@@ -25,7 +25,6 @@
 import javax.annotation.Nullable;
 
 class OpenAIFunction {
-    private static final ConcurrentHashMap<String, String> SCHEMA_CACHE = new ConcurrentHashMap<>();
 
     private final String pluginName;
     private final String name;
@@ -230,15 +229,11 @@ private static String getJavaTypeToOpenAiFunctionType(String javaType) {
     }
 
     private static String getObjectSchema(String type, String description){
-        String schema= "";
+        String schema= "{ \"type\" : \"object\" }";
         try {
-            if(SCHEMA_CACHE.containsKey(type)) {
-                schema= SCHEMA_CACHE.get(type);
-            } else {
                 Class<?> clazz = Class.forName(type);
                 schema = ResponseSchemaGenerator.jacksonGenerator().generateSchema(clazz);
-                SCHEMA_CACHE.put(type, schema);
-            }
+
         } catch (ClassNotFoundException | SKException ignored) {
 
         }

aiservices/openai/src/test/java/com/microsoft/semantickernel/aiservices/openai/chatcompletion/JsonSchemaTest.java

@@ -46,7 +46,9 @@ public void openAIFunctionTest() {
         OpenAIFunction openAIFunction = OpenAIFunction.build(
             testFunction.getMetadata(),
             plugin.getName());
-        System.out.println(openAIFunction.getFunctionDefinition());
+
+       String parameters = "{\"type\":\"object\",\"required\":[\"person\",\"input\"],\"properties\":{\"input\":{\"type\":\"string\",\"description\":\"input string\"},\"person\":{\"type\":\"object\",\"properties\":{\"age\":{\"type\":\"integer\",\"description\":\"The age of the person.\"},\"name\":{\"type\":\"string\",\"description\":\"The name of the person.\"},\"title\":{\"type\":\"string\",\"enum\":[\"MS\",\"MRS\",\"MR\"],\"description\":\"The title of the person.\"}},\"required\":[\"age\",\"name\",\"title\"],\"additionalProperties\":false,\"description\":\"input person\"}}}";
+       Assertions.assertEquals(parameters, openAIFunction.getFunctionDefinition().getParameters().toString());
 
     }