eagle-core/eagle-query/eagle-entity-base/src/main/java/org/apache/eagle/log/base/taggedlog/MapEntrySerializer.java

/*
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.
 */
package org.apache.eagle.log.base.taggedlog;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.util.Map;

public class MapEntrySerializer extends JsonSerializer<Map.Entry> {
    private static final String KEY_FIELD = "key";
    private static final String VALUE_FIELD = "value";

    @Override
    public void serialize(Map.Entry entry, JsonGenerator jsonGenerator, SerializerProvider serializerProvider)
        throws IOException, JsonProcessingException {
        jsonGenerator.writeStartObject();
        jsonGenerator.writeObjectField(KEY_FIELD, entry.getKey());
        jsonGenerator.writeObjectField(VALUE_FIELD, entry.getValue());
        jsonGenerator.writeEndObject();
    }
}