package org.warp.jcwdb;

import java.nio.charset.StandardCharsets;

import net.openhft.hashing.LongHashFunction;

public class DBStringParser extends DBTypeParserImpl<String> {
	private static final LongHashFunction hashFunction = net.openhft.hashing.LongHashFunction.xx();
	private static final DBReader<String> defaultReader = (i, size) -> {
		return new String(i.readBytes(size), StandardCharsets.UTF_16LE);
	};
	
	public DBReader<String> getReader() {
		return defaultReader;
	}
	
	public DBDataOutput<String> getWriter(final String value) {
		return DBDataOutput.create((o) -> {
			o.write(value.getBytes(StandardCharsets.UTF_16LE));
		}, DBStandardTypes.STRING, value.length() * 2, calculateHash(value));
	}

	@Override
	public long calculateHash(String value) {
		return hashFunction.hashBytes(value.getBytes(StandardCharsets.UTF_16LE));
	}
}