001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache license, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the license for the specific language governing permissions and
015 * limitations under the license.
016 */
017package org.apache.logging.log4j.core.jackson;
018
019import java.io.IOException;
020import java.util.Map;
021import java.util.Map.Entry;
022import java.util.Set;
023
024import com.fasterxml.jackson.core.JsonGenerationException;
025import com.fasterxml.jackson.core.JsonGenerator;
026import com.fasterxml.jackson.databind.SerializerProvider;
027import com.fasterxml.jackson.databind.ser.std.StdSerializer;
028
029/**
030 * <p>
031 * <em>Consider this class private.</em>
032 * </p>
033 */
034public class ListOfMapEntrySerializer extends StdSerializer<Map<String, String>> {
035
036    private static final long serialVersionUID = 1L;
037
038    protected ListOfMapEntrySerializer() {
039        super(Map.class, false);
040    }
041
042    @Override
043    public void serialize(final Map<String, String> map, final JsonGenerator jgen, final SerializerProvider provider)
044            throws IOException, JsonGenerationException {
045        final Set<Entry<String, String>> entrySet = map.entrySet();
046        final MapEntry[] pairs = new MapEntry[entrySet.size()];
047        int i = 0;
048        for (final Entry<String, String> entry : entrySet) {
049            pairs[i++] = new MapEntry(entry.getKey(), entry.getValue());
050        }
051        jgen.writeObject(pairs);
052    }
053
054}