me.ferrybig.javacoding.webmapper.util.JsonObjectMap.java Source code

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Here is the source code for me.ferrybig.javacoding.webmapper.util.JsonObjectMap.java

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package me.ferrybig.javacoding.webmapper.util;

import java.util.AbstractMap;
import java.util.AbstractSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import org.json.JSONObject;

/**
 *
 * @author Fernando
 */
public class JsonObjectMap extends AbstractMap<String, Object> {

    private final Set<Entry<String, Object>> set;

    public JsonObjectMap(JSONObject map) {
        set = new JsonObjectMapEntrySet(map);
    }

    @Override
    public Set<Entry<String, Object>> entrySet() {
        return set;
    }

    private class JsonObjectMapEntrySet extends AbstractSet<Entry<String, Object>> {

        private final JSONObject map;

        private JsonObjectMapEntrySet(JSONObject map) {
            this.map = Objects.requireNonNull(map, "map == null");
        }

        @Override
        public Iterator<Entry<String, Object>> iterator() {
            @SuppressWarnings("unchecked")
            final Iterator<String> i = map.keys();
            return new Iterator<Entry<String, Object>>() {

                @Override
                public boolean hasNext() {
                    return i.hasNext();
                }

                @Override
                public Entry<String, Object> next() {
                    String k;
                    return new SimpleEntry<>(k = i.next(), map.get(k));
                }

            };
        }

        @Override
        public int size() {
            return map.length();
        }

    }
}