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[fix] ServiceOutputParser fails if class has no fields

This commit is contained in:
Julien Perrochet 2024-04-19 00:02:23 +02:00
parent 608f55bfb3
commit 7897690a3b
1 changed files with 3 additions and 7 deletions
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10
langchain4j/src/main/java/dev/langchain4j/service/ServiceOutputParser.java
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@ -119,20 +119,16 @@ public class ServiceOutputParser {
}
private static String jsonStructure(Class<?> structured, Set<Class<?>> visited) {
StringBuilder jsonSchema = new StringBuilder();
jsonSchema.append("{\n");
List<String> descriptions = new ArrayList<>();
for (Field field : structured.getDeclaredFields()) {
String name = field.getName();
if (name.equals("__$hits$__") || java.lang.reflect.Modifier.isStatic(field.getModifiers())) {
// Skip coverage instrumentation field.
continue;
}
jsonSchema.append(format("\"%s\": (%s),\n", name, descriptionFor(field, visited)));
descriptions.add(format("\"%s\": (%s)", name, descriptionFor(field, visited)));
}
jsonSchema.delete(jsonSchema.lastIndexOf(","), jsonSchema.lastIndexOf(",")+1);
jsonSchema.append("}");
return jsonSchema.toString();
return "{\n" + String.join(",\n", descriptions) + "\n}";
}
private static String descriptionFor(Field field, Set<Class<?>> visited) {