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/*
 * This file is part of MongoWP.
 *
 * MongoWP is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * MongoWP is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with bson. If not, see .
 *
 * Copyright (C) 2016 8Kdata.
 * 
 */

package com.eightkdata.mongowp.bson.impl;

import com.eightkdata.mongowp.bson.BsonValue;
import com.eightkdata.mongowp.bson.abst.AbstractBsonDocument;
import com.eightkdata.mongowp.bson.annotations.NotMutable;
import com.google.common.collect.Iterators;
import com.google.common.collect.UnmodifiableIterator;
import java.util.LinkedHashMap;

/**
 *
 */
public class MapBasedBsonDocument extends AbstractBsonDocument {

    private static final long serialVersionUID = 4020431717465865262L;

    private final LinkedHashMap> map;

    public MapBasedBsonDocument(@NotMutable LinkedHashMap> map) {
        this.map = map;
    }

    @Override
    public BsonValue get(String key) {
        return map.get(key);
    }

    @Override
    public boolean containsKey(String key) {
        return map.containsKey(key);
    }

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

    @Override
    public Entry getEntry(String key) {
        BsonValue value = map.get(key);
        if (value == null) {
            return null;
        }
        return new SimpleEntry<>(key, value);
    }

    @Override
    public UnmodifiableIterator> iterator() {
        return Iterators.unmodifiableIterator(
                Iterators.transform(
                        map.entrySet().iterator(),
                        AbstractBsonDocument.FromEntryMap.INSTANCE
                )
        );
    }
}