org.zht.framework.uuid.Base64UuidGenerator.java Source code

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Here is the source code for org.zht.framework.uuid.Base64UuidGenerator.java

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/**
 * Copyright (c) 2015 https://github.com/zhaohuatai
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 */
package org.zht.framework.uuid;

import java.io.Serializable;
import java.nio.ByteBuffer;
import java.util.UUID;
import org.apache.commons.codec.binary.Base64;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.id.IdentifierGenerator;

public class Base64UuidGenerator implements IdentifierGenerator {

    @Override
    public Serializable generate(SessionImplementor session, Object object) throws HibernateException {
        return base64Uuid(UUID.randomUUID());
    }

    private static String base64Uuid(UUID uuid) {
        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
        bb.putLong(uuid.getMostSignificantBits());
        bb.putLong(uuid.getLeastSignificantBits());
        return Base64.encodeBase64URLSafeString(bb.array());
    }
}