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package cn.featherfly.data.impl;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import cn.featherfly.common.lang.Lang;
import cn.featherfly.data.core.DataSet;

/**
 * 
 * 简单数据记录
 * 
 *
 * @param  数据记录
 * @author 钟冀
 */
public class SimpleDataSet implements DataSet {

    private List records = new ArrayList<>();

    private int index = -1;

    /**
     */
    public SimpleDataSet() {
    }

    /**
     * @param records 记录集合
     */
    public SimpleDataSet(Collection records) {
        this.records.addAll(records);
    }

    /**
     * {@inheritDoc}
     */
    @SuppressWarnings("unchecked")
    @Override
    public > D addRecord(R record) {
        records.add(record);
        return (D) this;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    @SuppressWarnings("unchecked")
    public > D addRecord(R... records) {
        if (Lang.isNotEmpty(records)) {
            for (R record : records) {
                addRecord(record);
            }
        }
        return (D) this;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    @SuppressWarnings("unchecked")
    public > D addRecords(Collection records) {
        if (Lang.isNotEmpty(records)) {
            for (R record : records) {
                addRecord(record);
            }
        }
        return (D) this;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Collection getDataRecords() {
        return records;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public R getDataRecord(int index) {
        return records.get(index);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int getDataRecordsNumber() {
        return records.size();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int getIndex() {
        return index;
    }
}