    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     */
    017    package org.apache.logging.log4j.core.jackson;
    018
    019    import java.io.IOException;
    020    import java.util.HashMap;
    021    import java.util.List;
    022    import java.util.Map;
    023
    024    import com.fasterxml.jackson.core.JsonParser;
    025    import com.fasterxml.jackson.core.JsonProcessingException;
    026    import com.fasterxml.jackson.core.type.TypeReference;
    027    import com.fasterxml.jackson.databind.DeserializationContext;
    028    import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
    029
    030    /**
    031     * <p>
    032     * <em>Consider this class private.</em>
    033     * </p>
    034     */
    035    public class ListOfMapEntryDeserializer extends StdDeserializer<Map<String, String>> {
    036
    037        private static final long serialVersionUID = 1L;
    038
    039        ListOfMapEntryDeserializer() {
    040            super(Map.class);
    041        }
    042
    043        @Override
    044        public Map<String, String> deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException,
    045                JsonProcessingException {
    046            final List<MapEntry> list = jp.readValueAs(new TypeReference<List<MapEntry>>() {
    047                // empty
    048            });
    049            final HashMap<String, String> map = new HashMap<String, String>(list.size());
    050            for (final MapEntry mapEntry : list) {
    051                map.put(mapEntry.getKey(), mapEntry.getValue());
    052            }
    053            return map;
    054        }
    055    }