private void mergeMapField(FieldDescriptor field, JsonElement json, Message.Builder builder) throws InvalidProtocolBufferException { if (!(json instanceof JsonObject)) { throw new InvalidProtocolBufferException("Expect a map object but found: " + json); } Descriptor type = field.getMessageType(); FieldDescriptor keyField = type.findFieldByName("key"); FieldDescriptor valueField = type.findFieldByName("value"); if (keyField == null || valueField == null) { throw new InvalidProtocolBufferException("Invalid map field: " + field.getFullName()); } JsonObject object = (JsonObject) json; for (Map.Entry<String, JsonElement> entry : object.entrySet()) { Message.Builder entryBuilder = builder.newBuilderForField(field); Object key = parseFieldValue(keyField, new JsonPrimitive(entry.getKey()), entryBuilder); Object value = parseFieldValue(valueField, entry.getValue(), entryBuilder); if (value == null) { throw new InvalidProtocolBufferException("Map value cannot be null."); } entryBuilder.setField(keyField, key); entryBuilder.setField(valueField, value); builder.addRepeatedField(field, entryBuilder.build()); } }
return builder.newBuilderForField(field).mergeFrom(value.toByteString()).build(); } else if (field.getJavaType() == FieldDescriptor.JavaType.ENUM && field.getEnumType().getFullName().equals(NullValue.getDescriptor().getFullName())) { Message.Builder subBuilder = builder.newBuilderForField(field); merge(json, subBuilder); --currentDepth;
private void mergeValue(JsonElement json, Message.Builder builder) throws InvalidProtocolBufferException { Descriptor type = builder.getDescriptorForType(); if (json instanceof JsonPrimitive) { JsonPrimitive primitive = (JsonPrimitive) json; if (primitive.isBoolean()) { builder.setField(type.findFieldByName("bool_value"), primitive.getAsBoolean()); } else if (primitive.isNumber()) { builder.setField(type.findFieldByName("number_value"), primitive.getAsDouble()); } else { builder.setField(type.findFieldByName("string_value"), primitive.getAsString()); } } else if (json instanceof JsonObject) { FieldDescriptor field = type.findFieldByName("struct_value"); Message.Builder structBuilder = builder.newBuilderForField(field); merge(json, structBuilder); builder.setField(field, structBuilder.build()); } else if (json instanceof JsonArray) { FieldDescriptor field = type.findFieldByName("list_value"); Message.Builder listBuilder = builder.newBuilderForField(field); merge(json, listBuilder); builder.setField(field, listBuilder.build()); } else if (json instanceof JsonNull) { builder.setField( type.findFieldByName("null_value"), NullValue.NULL_VALUE.getValueDescriptor()); } else { throw new IllegalStateException("Unexpected json data: " + json); } }