graphql.language.EnumValue Java Examples

@Nullable
@Override
public Object parseLiteral(Object input) throws CoercingParseLiteralException {
    if (input instanceof NullValue) {
        return null;
    } else if (input instanceof FloatValue) {
        return ((FloatValue) input).getValue();
    } else if (input instanceof StringValue) {
        return ((StringValue) input).getValue();
    } else if (input instanceof IntValue) {
        return ((IntValue) input).getValue();
    } else if (input instanceof BooleanValue) {
        return ((BooleanValue) input).isValue();
    } else if (input instanceof EnumValue) {
        return ((EnumValue) input).getName();
    } else if (input instanceof ArrayValue) {
        return ((ArrayValue) input).getValues()
                .stream()
                .map(this::parseLiteral)
                .collect(Collectors.toList());
    } else if (input instanceof ObjectValue) {
        return ((ObjectValue) input).getObjectFields()
                .stream()
                .collect(Collectors.toMap(ObjectField::getName, f -> parseLiteral(f.getValue())));
    }
    return Assert.assertShouldNeverHappen();
}
 

public static Object parseLiteral(Object input, Map<String, Object> variables) throws CoercingParseLiteralException {
  if (!(input instanceof Value)) {
    log.error("Expected 'Value', got: {}", input);
    throw new CoercingParseLiteralException("Expected 'Value', got: " + input);
  }
  Object result = null;
  if (input instanceof StringValue) {
    result = ((StringValue) input).getValue();
  } else if (input instanceof IntValue) {
    result = ((IntValue) input).getValue();
  } else if (input instanceof FloatValue) {
    result = ((FloatValue) input).getValue();
  } else if (input instanceof BooleanValue) {
    result = ((BooleanValue) input).isValue();
  } else if (input instanceof EnumValue) {
    result = ((EnumValue) input).getName();
  } else if (input instanceof VariableReference) {
    result = variables.get(((VariableReference) input).getName());
  } else if (input instanceof ArrayValue) {
    result = ((ArrayValue) input).getValues().stream()
        .map(v -> parseLiteral(v, variables))
        .collect(toList());
  } else if (input instanceof ObjectValue) {
    result = ((ObjectValue) input).getObjectFields().stream()
        .collect(toMap(ObjectField::getName, f -> parseLiteral(f.getValue(), variables)));
  }
  return result;
}
 

@Override
public JsonElement parseLiteral(Object input) {
    if (input instanceof ObjectValue || input instanceof ArrayValue) {
        throw literalParsingException(input, StringValue.class, BooleanValue.class, EnumValue.class,
                FloatValue.class, IntValue.class, NullValue.class);
    }
    return parseJsonValue(((Value) input));
}
 

private static JsonElement parseJsonValue(Value value) {
    if (value instanceof BooleanValue) {
        return new JsonPrimitive(((BooleanValue) value).isValue());
    }
    if (value instanceof EnumValue) {
        return new JsonPrimitive(((EnumValue) value).getName());
    }
    if (value instanceof FloatValue) {
        return new JsonPrimitive(((FloatValue) value).getValue());
    }
    if (value instanceof IntValue) {
        return new JsonPrimitive(((IntValue) value).getValue());
    }
    if (value instanceof NullValue) {
        return JsonNull.INSTANCE;
    }
    if (value instanceof StringValue) {
        return new JsonPrimitive(((StringValue) value).getValue());
    }
    if (value instanceof ArrayValue) {
        List<Value> values = ((ArrayValue) value).getValues();
        JsonArray jsonArray = new JsonArray(values.size());
        values.forEach(v -> jsonArray.add(parseJsonValue(v)));
        return jsonArray;
    }
    if (value instanceof ObjectValue) {
        final JsonObject result = new JsonObject();
        ((ObjectValue) value).getObjectFields().forEach(objectField ->
                result.add(objectField.getName(), parseJsonValue(objectField.getValue())));
        return result;
    }
    //Should never happen, as it would mean the variable was not replaced by the parser
    throw new CoercingParseLiteralException("Unknown scalar AST type: " + value.getClass().getName());
}
 

private static JsonNode parseJsonValue(Value value, Map<String, Object> variables) {
    if (value instanceof BooleanValue) {
        return JsonNodeFactory.instance.booleanNode(((BooleanValue) value).isValue());
    }
    if (value instanceof EnumValue) {
        return JsonNodeFactory.instance.textNode(((EnumValue) value).getName());
    }
    if (value instanceof FloatValue) {
        return JsonNodeFactory.instance.numberNode(((FloatValue) value).getValue());
    }
    if (value instanceof IntValue) {
        return JsonNodeFactory.instance.numberNode(((IntValue) value).getValue());
    }
    if (value instanceof NullValue) {
        return JsonNodeFactory.instance.nullNode();
    }
    if (value instanceof StringValue) {
        return JsonNodeFactory.instance.textNode(((StringValue) value).getValue());
    }
    if (value instanceof ArrayValue) {
        List<Value> values = ((ArrayValue) value).getValues();
        ArrayNode jsonArray = JsonNodeFactory.instance.arrayNode(values.size());
        values.forEach(v -> jsonArray.add(parseJsonValue(v, variables)));
        return jsonArray;
    }
    if (value instanceof VariableReference) {
        return OBJECT_MAPPER.convertValue(variables.get(((VariableReference) value).getName()), JsonNode.class);
    }
    if (value instanceof ObjectValue) {
        final ObjectNode result = JsonNodeFactory.instance.objectNode();
        ((ObjectValue) value).getObjectFields().forEach(objectField ->
                result.set(objectField.getName(), parseJsonValue(objectField.getValue(), variables)));
        return result;
    }
    //Should never happen
    throw new CoercingParseLiteralException("Unknown scalar AST type: " + value.getClass().getName());
}
 

@Test
public void enumValue() {
  Value value = EnumValue.newEnumValue("a").build();
  Object result = JsonCoercingUtil.parseLiteral(value, emptyMap());
  assertThat(result, is("a"));
}