protected Schema createSchema()

in avro-1.5.3/src/main/java/org/apache/avro/reflect/ReflectData.java [217:314]
98 lines of code
32 McCabe index (conditional complexity)

  protected Schema createSchema(Type type, Map<String,Schema> names) {
    if (type instanceof GenericArrayType) {                  // generic array
      Type component = ((GenericArrayType)type).getGenericComponentType();
      if (component == Byte.TYPE)                            // byte array
        return Schema.create(Schema.Type.BYTES);           
      Schema result = Schema.createArray(createSchema(component, names));
      setElement(result, component);
      return result;
    } else if (type instanceof ParameterizedType) {
      ParameterizedType ptype = (ParameterizedType)type;
      Class raw = (Class)ptype.getRawType();
      Type[] params = ptype.getActualTypeArguments();
      if (Map.class.isAssignableFrom(raw)) {                 // Map
        Type key = params[0];
        Type value = params[1];
        if (!(key == String.class))
          throw new AvroTypeException("Map key class not String: "+key);
        return Schema.createMap(createSchema(value, names));
      } else if (Collection.class.isAssignableFrom(raw)) {   // Collection
        if (params.length != 1)
          throw new AvroTypeException("No array type specified.");
        Schema schema = Schema.createArray(createSchema(params[0], names));
        schema.addProp(CLASS_PROP, raw.getName());
        return schema;
      }
    } else if ((type == Short.class) || (type == Short.TYPE)) {
      Schema result = Schema.create(Schema.Type.INT);
      result.addProp(CLASS_PROP, Short.class.getName());
      return result;
    } else if (type instanceof Class) {                      // Class
      Class<?> c = (Class<?>)type;
      if (c.isPrimitive() || Number.class.isAssignableFrom(c)
          || c == Void.class || c == Boolean.class)          // primitive
        return super.createSchema(type, names);
      if (c.isArray()) {                                     // array
        Class component = c.getComponentType();
        if (component == Byte.TYPE)                          // byte array
          return Schema.create(Schema.Type.BYTES);
        Schema result = Schema.createArray(createSchema(component, names));
        setElement(result, component);
        return result;
      }
      if (CharSequence.class.isAssignableFrom(c))            // String
        return Schema.create(Schema.Type.STRING);
      String fullName = c.getName();
      Schema schema = names.get(fullName);
      if (schema == null) {
        String name = c.getSimpleName();
        String space = c.getPackage() == null ? "" : c.getPackage().getName();
        if (c.getEnclosingClass() != null)                   // nested class
          space = c.getEnclosingClass().getName() + "$";
        Union union = c.getAnnotation(Union.class);
        if (union != null) {                                 // union annotated
          return getAnnotatedUnion(union, names);
        } else if (c.isAnnotationPresent(Stringable.class)){ // Stringable
          Schema result = Schema.create(Schema.Type.STRING);
          result.addProp(CLASS_PROP, c.getName());
          return result;
        } else if (c.isEnum()) {                             // Enum
          List<String> symbols = new ArrayList<String>();
          Enum[] constants = (Enum[])c.getEnumConstants();
          for (int i = 0; i < constants.length; i++)
            symbols.add(constants[i].name());
          schema = Schema.createEnum(name, null /* doc */, space, symbols);
        } else if (GenericFixed.class.isAssignableFrom(c)) { // fixed
          int size = c.getAnnotation(FixedSize.class).value();
          schema = Schema.createFixed(name, null /* doc */, space, size);
        } else if (IndexedRecord.class.isAssignableFrom(c)) { // specific
          return super.createSchema(type, names);
        } else {                                             // record
          List<Schema.Field> fields = new ArrayList<Schema.Field>();
          boolean error = Throwable.class.isAssignableFrom(c);
          schema = Schema.createRecord(name, null /* doc */, space, error);
          names.put(c.getName(), schema);
          for (Field field : getFields(c))
            if ((field.getModifiers()&(Modifier.TRANSIENT|Modifier.STATIC))==0){
              Schema fieldSchema = createFieldSchema(field, names);
              JsonNode defaultValue = null;
              if (fieldSchema.getType() == Schema.Type.UNION) {
                Schema defaultType = fieldSchema.getTypes().get(0);
                if (defaultType.getType() == Schema.Type.NULL) {
                  defaultValue = NullNode.getInstance();
                }
              }
              fields.add(new Schema.Field(field.getName(),
                  fieldSchema, null /* doc */, defaultValue));
            }
          if (error)                              // add Throwable message
            fields.add(new Schema.Field("detailMessage", THROWABLE_MESSAGE,
                                        null, null));
          schema.setFields(fields);
        }
        names.put(fullName, schema);
      }
      return schema;
    }
    return super.createSchema(type, names);
  }