package org.mapdb.ser;

import org.jetbrains.annotations.NotNull;

import org.jetbrains.annotations.Nullable;

import org.mapdb.DBException;

import org.mapdb.io.DataInput2;

import org.mapdb.io.DataInput2ByteArray;

import org.mapdb.io.DataOutput2;

import org.mapdb.io.DataOutput2ByteArray;

import java.io.*;

import java.math.BigDecimal;

import java.math.BigInteger;

import java.util.*;

public final class Serializers {

private Serializers(){}

/** Serializer for [java.lang.Integer] */

public static final Serializer<Integer> INTEGER = new IntegerSerializer();

/** Serializer for [java.lang.Long] */

public static final Serializer<Long> LONG = new LongSerializer();

/** Serializer for recids (packed 6 bytes, extra parity bit) */

public static final Serializer<Long> RECID = new RecidSerializer();

/** Serializer for [java.lang.String] */

public static final Serializer<String> STRING = new StringSerializer();

public static final Serializer<String> STRING_DELTA = new StringDeltaSerializer();

public static final Serializer<String> STRING_DELTA2 = new StringDelta2Serializer();

public static final Serializer<String> STRING_NOSIZE = new StringNoSizeSerializer();

/**

* Serializer for `byte[]`, but does not add extra bytes for array size.

*

* Uses [org.mapdb.io.DataInput2.available] to determine array size on deserialization.

*/

public static final Serializer<byte[]> BYTE_ARRAY_NOSIZE = new ByteArrayNoSizeSerializer();

public static final Serializer JAVA = new JavaSerializer();

public static final Serializer<Byte> BYTE = new ByteSerializer();

/** Serializer for `byte[]`, adds extra few bytes for array size */

public static final Serializer<byte[]> BYTE_ARRAY = new ByteArraySerializer();

public static final Serializer<byte[]> BYTE_ARRAY_DELTA = new ByteArrayDeltaSerializer();

public static final Serializer<byte[]> BYTE_ARRAY_DELTA2 = new ByteArrayDelta2Serializer();

public static final Serializer<Character> CHAR = new CharSerializer();

public static final Serializer<char[]> CHAR_ARRAY = new CharArraySerializer();

public static final Serializer<Short> SHORT = new ShortSerializer();

public static final Serializer<short[]> SHORT_ARRAY = new ShortArraySerializer();

public static final Serializer<Float> FLOAT = new FloatSerializer();

public static final Serializer<float[]> FLOAT_ARRAY = new FloatArraySerializer();

public static final Serializer<Double> DOUBLE = new DoubleSerializer();

public static final Serializer<double[]> DOUBLE_ARRAY = new DoubleArraySerializer();

public static final Serializer<Boolean> BOOLEAN = new BooleanSerializer();

public static final Serializer<int[]> INT_ARRAY = new IntArraySerializer();

public static final Serializer<long[]> LONG_ARRAY = new LongArraySerializer();

public static final Serializer<BigDecimal> BIG_DECIMAL = new BigDecimalSerializer();

public static final Serializer<BigInteger> BIG_INTEGER = new BigIntegerSerializer();

public static final Serializer<Class> CLASS = new ClassSerializer();

public static final Serializer<Date> DATE = new DateSerializer();

public static final Serializer<UUID> UUID = new UUIDSerializer();

public static <R> byte[] serializeToByteArray(R record, Serializer<R> serializer) {

DataOutput2ByteArray out = new DataOutput2ByteArray();

serializer.serialize(out,record);

return out.copyBytes();

}

@Nullable

public static <R> R clone(@NotNull R r, @NotNull Serializer<R> ser) {

byte[] b = serializeToByteArray(r, ser);

return ser.deserialize(new DataInput2ByteArray(b));

}

@NotNull

public static boolean binaryEqual(@NotNull Serializer<Object> ser, Object a, Object b) {

if(a==b)

return true;

if(a==null || b==null)

return false;

byte[] ba = serializeToByteArray(a, ser);

byte[] bb = serializeToByteArray(b, ser);

return Arrays.equals(ba,bb);

}

}