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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef avro_CustomAttributes_hh__
#define avro_CustomAttributes_hh__
#include <boost/optional.hpp>
#include <iostream>
#include <map>
#include <string>
#include "Config.hh"
namespace avro {
// CustomAttributes class stores avro custom attributes.
// Each attribute is represented by a unique name and value.
// User is supposed to create CustomAttributes object and then add it to Schema.
class AVRO_DECL CustomAttributes {
public:
// Retrieves the custom attribute json entity for that attributeName, returns an
// null if the attribute doesn't exist.
boost::optional<std::string> getAttribute(const std::string &name) const;
// Adds a custom attribute. If the attribute already exists, throw an exception.
void addAttribute(const std::string &name, const std::string &value);
// Provides a way to iterate over the custom attributes or check attribute size.
const std::map<std::string, std::string> &attributes() const {
return attributes_;
}
// Prints the attribute value for the specific attribute.
void printJson(std::ostream& os, const std::string &name) const;
private:
std::map<std::string, std::string> attributes_;
};
} // namespace avro
#endif
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